CINXE.COM

<!DOCTYPE html> <html class="client-nojs" lang="en" dir="ltr"> <head> <meta charset="UTF-8"/> <title>Proposal:Check dam - OpenStreetMap Wiki</title> <script>document.documentElement.className="client-js";RLCONF={"wgBreakFrames":false,"wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy","wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgRequestId":"7e29ba29a1d92780df6ee7ba","wgCSPNonce":false,"wgCanonicalNamespace":"Proposal","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":3000,"wgPageName":"Proposal:Check_dam","wgTitle":"Check dam","wgCurRevisionId":2783255,"wgRevisionId":2783255,"wgArticleId":265079,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["Proposals with \"Proposed\" status","Proposed features under way","Proposals with \"Proposed\" status sorted by newest edit"],"wgPageContentLanguage":"en","wgPageContentModel":"wikitext","wgRelevantPageName":"Proposal:Check_dam","wgRelevantArticleId":265079,"wgIsProbablyEditable":false, "wgRelevantPageIsProbablyEditable":false,"wgRestrictionEdit":[],"wgRestrictionMove":[],"wgRedirectedFrom":"Tag:waterway=check_dam","wgMFDisplayWikibaseDescriptions":{"search":false,"nearby":false,"watchlist":false,"tagline":false},"wgVisualEditor":{"pageLanguageCode":"en","pageLanguageDir":"ltr","pageVariantFallbacks":"en"},"wgULSAcceptLanguageList":[],"wgULSCurrentAutonym":"English","wgVector2022PreviewPages":[],"wgInternalRedirectTargetUrl":"/wiki/Proposal:Check_dam","wgEditSubmitButtonLabelPublish":false,"wgULSPosition":"personal","wgULSisCompactLinksEnabled":true};RLSTATE={"site.styles":"ready","user.styles":"ready","user":"ready","user.options":"loading","mediawiki.page.gallery.styles":"ready","skins.vector.styles.legacy":"ready","ext.OsmWikibase-all":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.uls.pt":"ready"};RLPAGEMODULES=["mediawiki.action.view.redirect","site","mediawiki.page.ready","mediawiki.toc","skins.vector.legacy.js", "ext.visualEditor.desktopArticleTarget.init","ext.visualEditor.targetLoader","ext.gadget.taginfo","ext.gadget.dataitemlinks","ext.gadget.maps","ext.uls.compactlinks","ext.uls.interface"];</script> <script>(RLQ=window.RLQ||[]).push(function(){mw.loader.implement("user.options@12s5i",function($,jQuery,require,module){mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"});});});</script> <link rel="stylesheet" href="/w/load.php?lang=en&modules=ext.OsmWikibase-all%7Cext.uls.pt%7Cext.visualEditor.desktopArticleTarget.noscript%7Cmediawiki.page.gallery.styles%7Cskins.vector.styles.legacy&only=styles&skin=vector"/> <script async="" src="/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector"></script> <meta name="ResourceLoaderDynamicStyles" content=""/> <link rel="stylesheet" href="/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector"/> <noscript><link rel="stylesheet" href="/w/load.php?lang=en&modules=noscript&only=styles&skin=vector"/></noscript> <meta name="generator" content="MediaWiki 1.39.11"/> <meta name="format-detection" content="telephone=no"/> <meta name="viewport" content="width=1000"/> <link rel="icon" href="/favicon.ico"/> <link rel="search" type="application/opensearchdescription+xml" href="/w/opensearch_desc.php" title="OpenStreetMap Wiki (en)"/> <link rel="EditURI" type="application/rsd+xml" href="//wiki.openstreetmap.org/w/api.php?action=rsd"/> <link rel="license" href="/wiki/Wiki_content_license"/> <link rel="alternate" type="application/atom+xml" title="OpenStreetMap Wiki Atom feed" href="/w/index.php?title=Special:RecentChanges&feed=atom"/> <link rel="canonical" href="https://wiki.openstreetmap.org/wiki/Proposal:Check_dam"/> </head> <body class="mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-3000 ns-subject page-Proposal_Check_dam rootpage-Proposal_Check_dam skin-vector action-view skin-vector-legacy vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-language-alert-in-sidebar-disabled vector-feature-sticky-header-disabled vector-feature-sticky-header-edit-disabled vector-feature-table-of-contents-disabled vector-feature-visual-enhancement-next-disabled"><div id="mw-page-base" class="noprint"></div> <div id="mw-head-base" class="noprint"></div> <div id="content" class="mw-body" role="main"> <a id="top"></a> <div id="siteNotice"></div> <div class="mw-indicators"> </div> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-namespace">Proposal</span><span class="mw-page-title-separator">:</span><span class="mw-page-title-main">Check dam</span></h1> <div id="bodyContent" class="vector-body"> <div id="siteSub" class="noprint">From OpenStreetMap Wiki</div> <div id="contentSub"><span class="mw-redirectedfrom">(Redirected from <a href="/w/index.php?title=Tag:waterway%3Dcheck_dam&redirect=no" class="mw-redirect" title="Tag:waterway=check dam">Tag:waterway=check dam</a>)</span></div> <div id="contentSub2"></div> <div id="jump-to-nav"></div> <a class="mw-jump-link" href="#mw-head">Jump to navigation</a> <a class="mw-jump-link" href="#searchInput">Jump to search</a> <div id="mw-content-text" class="mw-body-content mw-content-ltr" lang="en" dir="ltr"><div class="mw-parser-output"><table class="vcard" dir="ltr" style="margin:2px 0;background:#EEE;border:1px solid #AAA;padding:5px"> <tbody><tr> <th colspan="2" style="border-bottom:1px solid #AAA;text-align:left;font-size:120%">Check dam </th></tr> <tr> <th style="text-align:left"><a href="/wiki/Proposal_process#Proposal_status_overview_list" title="Proposal process">Proposal status</a>: </th> <td><a href="/wiki/Category:Proposals_with_%22Proposed%22_status" title="Category:Proposals with "Proposed" status">Proposed</a> (<a href="/wiki/Category:Proposed_features_under_way" title="Category:Proposed features under way">under way</a>) </td></tr> <tr> <th style="text-align:left">Proposed by: </th> <td><a href="/wiki/User:Eginhard" title="User:Eginhard">Eginhard</a> </td></tr> <tr> <th style="text-align:left">Tagging: </th> <td><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:waterway" title="Key:waterway">waterway</a></bdi>=<a href="/wiki/Tag:waterway%3Dcheck_dam" class="mw-redirect" title="Tag:waterway=check dam"><bdi>check_dam</bdi></a></tt> <div style="float:right;"><small><span class="plainlinks"><span class="nowrap" title="Link to corresponding data item" style="display:inline-block;unicode-bidi:embed;font:.95em sans-serif;line-height:normal;margin:2px;border:1px outset #999;border-color:buttonface;-moz-border-radius:2px;-webkit-border-radius:2px;border-radius:2px;color:#000;background:#F9F9F9;background-color:buttonface;background:#E8E8E8;background:-webkit-gradient(linear,left top,left bottom,color-stop(0%,#FCFCFC),color-stop(100%,#E8E8E8));background:-webkit-linear-gradient(top,#FCFCFC,#E8E8E8);background:-moz-linear-gradient(top,#FCFCFC,#E8E8E8);background:-o-linear-gradient(top,#FCFCFC,#E8E8E8);background:-ms-linear-gradient(top,#FCFCFC,#E8E8E8);background:linear-gradient(top,#FCFCFC,#E8E8E8);color:#000;color:buttontext;padding:3px .4em;white-space:nowrap;letter-spacing:normal;word-spacing:normal;text-shadow:none;text-indent:0;text-transform:none;"><a rel="nofollow" class="external text" href="https://wiki.openstreetmap.org/wiki/Special:EntityPage/Q19234">Data item</a></span> </span></small></div> </td></tr> <tr> <th style="text-align:left">Applies to: </th> <td><a href="/wiki/Node" title="node"><img alt="node" src="/w/images/thumb/7/76/Osm_element_node.svg/20px-Osm_element_node.svg.png" decoding="async" width="20" height="20" style="vertical-align: text-bottom" srcset="/w/images/thumb/7/76/Osm_element_node.svg/30px-Osm_element_node.svg.png 1.5x, /w/images/thumb/7/76/Osm_element_node.svg/40px-Osm_element_node.svg.png 2x" /></a>, <a href="/wiki/Way" title="way"><img alt="way" src="/w/images/thumb/e/ee/Osm_element_way.svg/20px-Osm_element_way.svg.png" decoding="async" width="20" height="20" style="vertical-align: text-bottom" srcset="/w/images/thumb/e/ee/Osm_element_way.svg/30px-Osm_element_way.svg.png 1.5x, /w/images/thumb/e/ee/Osm_element_way.svg/40px-Osm_element_way.svg.png 2x" /></a> </td></tr> <tr> <th style="text-align:left">Definition: </th> <td>Barrier structures to reduce the speed of flow, prevent erosion and hold back debris on mountain torrents </td></tr> <tr> <th style="text-align:left">Statistics: </th> <td><iframe frameborder="0" width="220" height="100" src="//taginfo.openstreetmap.org/embed/tag?key=waterway&value=check_dam"></iframe> <p class="mw-empty-elt"> </p> </td></tr> <tr> <th style="text-align:left">Rendered as: </th> <td>Similar to weirs and dams </td></tr> <tr> <th style="text-align:left"><span class="plainlinks"><a rel="nofollow" class="external text" href="//wiki.openstreetmap.org/wiki/Category:Proposals_with_%22Draft%22_status">Draft</a></span> started: </th> <td>2021-04-09 </td></tr> <tr> <th style="text-align:left"><a href="/wiki/Proposal_talk:Check_dam" title="Proposal talk:Check dam">RFC</a> start: </th> <td>2021-06-07 </td></tr></tbody></table> <p><br /> </p> <div id="toc" class="toc" role="navigation" aria-labelledby="mw-toc-heading"><input type="checkbox" role="button" id="toctogglecheckbox" class="toctogglecheckbox" style="display:none" /><div class="toctitle" lang="en" dir="ltr"><h2 id="mw-toc-heading">Contents</h2><span class="toctogglespan"><label class="toctogglelabel" for="toctogglecheckbox"></label></span></div> <ul> <li class="toclevel-1 tocsection-1"><a href="#Proposal"><span class="tocnumber">1</span> <span class="toctext">Proposal</span></a></li> <li class="toclevel-1 tocsection-2"><a href="#Rationale"><span class="tocnumber">2</span> <span class="toctext">Rationale</span></a></li> <li class="toclevel-1 tocsection-3"><a href="#Definitions_and_tagging"><span class="tocnumber">3</span> <span class="toctext">Definitions and tagging</span></a> <ul> <li class="toclevel-2 tocsection-4"><a href="#Main_tags"><span class="tocnumber">3.1</span> <span class="toctext">Main tags</span></a></li> <li class="toclevel-2 tocsection-5"><a href="#Tags_used_in_conjunction"><span class="tocnumber">3.2</span> <span class="toctext">Tags used in conjunction</span></a></li> <li class="toclevel-2 tocsection-6"><a href="#Solid_check_dams"><span class="tocnumber">3.3</span> <span class="toctext">Solid check dams</span></a></li> <li class="toclevel-2 tocsection-7"><a href="#Open_check_dams"><span class="tocnumber">3.4</span> <span class="toctext">Open check dams</span></a> <ul> <li class="toclevel-3 tocsection-8"><a href="#Slot_check_dam"><span class="tocnumber">3.4.1</span> <span class="toctext">Slot check dam</span></a></li> <li class="toclevel-3 tocsection-9"><a href="#Slit_check_dam"><span class="tocnumber">3.4.2</span> <span class="toctext">Slit check dam</span></a></li> <li class="toclevel-3 tocsection-10"><a href="#Fin_check_dam"><span class="tocnumber">3.4.3</span> <span class="toctext">Fin check dam</span></a></li> <li class="toclevel-3 tocsection-11"><a href="#Rake_check_dam"><span class="tocnumber">3.4.4</span> <span class="toctext">Rake check dam</span></a></li> <li class="toclevel-3 tocsection-12"><a href="#Beam_check_dam"><span class="tocnumber">3.4.5</span> <span class="toctext">Beam check dam</span></a></li> <li class="toclevel-3 tocsection-13"><a href="#Net_check_dam"><span class="tocnumber">3.4.6</span> <span class="toctext">Net check dam</span></a></li> <li class="toclevel-3 tocsection-14"><a href="#Frame_check_dam"><span class="tocnumber">3.4.7</span> <span class="toctext">Frame check dam</span></a></li> </ul> </li> <li class="toclevel-2 tocsection-15"><a href="#Screens"><span class="tocnumber">3.5</span> <span class="toctext">Screens</span></a></li> <li class="toclevel-2 tocsection-16"><a href="#Debris_basins"><span class="tocnumber">3.6</span> <span class="toctext">Debris basins</span></a></li> <li class="toclevel-2 tocsection-17"><a href="#Related_structures"><span class="tocnumber">3.7</span> <span class="toctext">Related structures</span></a></li> </ul> </li> <li class="toclevel-1 tocsection-18"><a href="#Rendering"><span class="tocnumber">4</span> <span class="toctext">Rendering</span></a></li> <li class="toclevel-1 tocsection-19"><a href="#Features/Pages_affected"><span class="tocnumber">5</span> <span class="toctext">Features/Pages affected</span></a></li> <li class="toclevel-1 tocsection-20"><a href="#External_discussions"><span class="tocnumber">6</span> <span class="toctext">External discussions</span></a></li> <li class="toclevel-1 tocsection-21"><a href="#References"><span class="tocnumber">7</span> <span class="toctext">References</span></a></li> <li class="toclevel-1 tocsection-22"><a href="#Comments"><span class="tocnumber">8</span> <span class="toctext">Comments</span></a></li> </ul> </div> <h2><span class="mw-headline" id="Proposal">Proposal</span></h2> <p>This proposes </p> <ul><li><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:waterway" title="Key:waterway">waterway</a></bdi>=<a href="/wiki/Tag:waterway%3Dcheck_dam" class="mw-redirect" title="Tag:waterway=check dam"><bdi>check_dam</bdi></a></tt> to map check dams</li> <li><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=*</tt> to specify the type of check dam</li> <li><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam:screen&action=edit&redlink=1" class="new" title="Key:check dam:screen (page does not exist)">check_dam:screen</a></bdi>=*</tt> to describe the screen that might be on the check dam</li> <li><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:screen:material&action=edit&redlink=1" class="new" title="Key:screen:material (page does not exist)">screen:material</a></bdi>=*</tt> to describe the material of the screen (may also be used for screens on <a href="/wiki/Proposed_features/Inlets_proposal" class="mw-redirect" title="Proposed features/Inlets proposal">inlets</a> and <a href="/wiki/Proposed_features/Outlets_proposal" class="mw-redirect" title="Proposed features/Outlets proposal">outlets</a>)</li></ul> <h2><span class="mw-headline" id="Rationale">Rationale</span></h2> <p>Check dams are sufficiently different from dams and weirs in form and function to warrant their own tag. They are frequently encountered along mountain streams to protect downstream settlements and infrastructure. Such streams can see sudden, dramatic increases in water flow, often accompanied by large amounts of debris (sediment and wood), that may be slowed or contained by check dams. </p><p>Check dams can be very large structures and may aid navigation. Some types of check dams need to be regularly accessed for maintenance and debris removal. Check dams and the debris basins behind them also present dangers in case of torrential flow events. </p><p>A previous proposal on <a href="/wiki/Proposed_features/Torrent_control_structures" class="mw-redirect" title="Proposed features/Torrent control structures">torrent control structures</a> proposed <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:waterway" title="Key:waterway">waterway</a></bdi>=<a href="/wiki/Tag:waterway%3Dcheck_dam" class="mw-redirect" title="Tag:waterway=check dam"><bdi>check_dam</bdi></a></tt> for solid and <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:waterway" title="Key:waterway">waterway</a></bdi>=<a href="/w/index.php?title=Tag:waterway%3Dbeam_dam&action=edit&redlink=1" class="new" title="Tag:waterway=beam dam (page does not exist)"><bdi>beam_dam</bdi></a></tt> for open check dams. The former has gained some traction and already tagged objects remain compatible with this proposal because check dams will be considered to be solid by default. The definition of <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:waterway" title="Key:waterway">waterway</a></bdi>=<a href="/w/index.php?title=Tag:waterway%3Dbeam_dam&action=edit&redlink=1" class="new" title="Tag:waterway=beam dam (page does not exist)"><bdi>beam_dam</bdi></a></tt> for open check dams was vague, the current proposal allows to provide more detail on different kinds of check dams through subtags. </p> <table> <caption>Use of <a href="/wiki/Proposed_features/Torrent_control_structures" class="mw-redirect" title="Proposed features/Torrent control structures">previously proposed</a> tags </caption> <tbody><tr> <td><div class="taginfo-ajax taginfobox" style="display:none; width:11em" data-taginfo-key="waterway" data-taginfo-value="check_dam" data-taginfo-no-such-tag="This tag does not appear in the OSM database." data-taginfo-taginfo-error="Error loading from Taginfo API." data-taginfo-url="https://taginfo.openstreetmap.org"><div class="ti_named_link taginfo-tag"><bdi><b><span class="plainlinks" title="waterway=*"><a class="external text" href="https://taginfo.openstreetmap.org/keys/waterway">waterway</a></span></b>=<b><span class="plainlinks" title="waterway=check_dam"><a class="external text" href="https://taginfo.openstreetmap.org/tags/waterway%3Dcheck_dam">check_dam</a></span></b></bdi></div><div class="ti_empty taginfo-content taginfo-compact-text taginfo-hidden"></div><div class="ti_error taginfo-content taginfo-compact-text taginfo-hidden"></div><div class="ti_content taginfo-content"><table><tbody><tr><td class="all-ico taginfo-ico"><a href="https://taginfo.openstreetmap.org/tags/waterway%3Dcheck_dam" title="All"><img alt="All" src="/w/images/thumb/0/05/Osm_element_all.svg/16px-Osm_element_all.svg.png" decoding="async" width="16" height="16" srcset="/w/images/thumb/0/05/Osm_element_all.svg/24px-Osm_element_all.svg.png 1.5x, /w/images/thumb/0/05/Osm_element_all.svg/32px-Osm_element_all.svg.png 2x" /></a></td><td class="all-count" title="Objects with tag “waterway=check_dam” in database"></td><td class="all-pct last-col" title="Fraction of all objects with key “waterway”">$1%</td></tr><tr><td class="node-ico taginfo-ico"><a href="https://taginfo.openstreetmap.org/tags/waterway%3Dcheck_dam" title="Nodes"><img alt="Nodes" src="/w/images/thumb/5/50/Taginfo_element_node.svg/16px-Taginfo_element_node.svg.png" decoding="async" width="16" height="16" srcset="/w/images/thumb/5/50/Taginfo_element_node.svg/24px-Taginfo_element_node.svg.png 1.5x, /w/images/thumb/5/50/Taginfo_element_node.svg/32px-Taginfo_element_node.svg.png 2x" /></a></td><td class="node-count" title="Nodes with tag “waterway=check_dam” in database"></td><td class="node-pct last-col" title="Fraction of all nodes with key “waterway”">$1%</td></tr><tr><td class="way-ico taginfo-ico"><a href="https://taginfo.openstreetmap.org/tags/waterway%3Dcheck_dam" title="Ways"><img alt="Ways" src="/w/images/thumb/f/f4/Taginfo_element_way.svg/16px-Taginfo_element_way.svg.png" decoding="async" width="16" height="16" srcset="/w/images/thumb/f/f4/Taginfo_element_way.svg/24px-Taginfo_element_way.svg.png 1.5x, /w/images/thumb/f/f4/Taginfo_element_way.svg/32px-Taginfo_element_way.svg.png 2x" /></a></td><td class="way-count" title="Ways with tag “waterway=check_dam” in database"></td><td class="way-pct last-col" title="Fraction of all ways with key “waterway”">$1%</td></tr><tr><td class="rel-ico taginfo-ico"><a href="https://taginfo.openstreetmap.org/tags/waterway%3Dcheck_dam" title="Relations"><img alt="Relations" src="/w/images/thumb/b/be/Taginfo_element_relation.svg/16px-Taginfo_element_relation.svg.png" decoding="async" width="16" height="16" srcset="/w/images/thumb/b/be/Taginfo_element_relation.svg/24px-Taginfo_element_relation.svg.png 1.5x, /w/images/thumb/b/be/Taginfo_element_relation.svg/32px-Taginfo_element_relation.svg.png 2x" /></a></td><td class="rel-count" title="Relations with tag “waterway=check_dam” in database"></td><td class="rel-pct last-col" title="Fraction of all relations with key “waterway”">$1%</td></tr></tbody></table></div><div class="taginfo-logo"><span class="plainlinks"><a class="external text" href="https://taginfo.openstreetmap.org/tags/waterway%3Dcheck_dam">More details at tag<b>info</b></a></span></div></div><div class="taginfo-fallback-link"><a class="external text" href="https://taginfo.openstreetmap.org/tags/waterway%3Dcheck_dam">More details at tag<b>info</b></a></div> </td> <td><div class="taginfo-ajax taginfobox" style="display:none; width:11em" data-taginfo-key="waterway" data-taginfo-value="beam_dam" data-taginfo-no-such-tag="This tag does not appear in the OSM database." data-taginfo-taginfo-error="Error loading from Taginfo API." data-taginfo-url="https://taginfo.openstreetmap.org"><div class="ti_named_link taginfo-tag"><bdi><b><span class="plainlinks" title="waterway=*"><a class="external text" href="https://taginfo.openstreetmap.org/keys/waterway">waterway</a></span></b>=<b><span class="plainlinks" title="waterway=beam_dam"><a class="external text" href="https://taginfo.openstreetmap.org/tags/waterway%3Dbeam_dam">beam_dam</a></span></b></bdi></div><div class="ti_empty taginfo-content taginfo-compact-text taginfo-hidden"></div><div class="ti_error taginfo-content taginfo-compact-text taginfo-hidden"></div><div class="ti_content taginfo-content"><table><tbody><tr><td class="all-ico taginfo-ico"><a href="https://taginfo.openstreetmap.org/tags/waterway%3Dbeam_dam" title="All"><img alt="All" src="/w/images/thumb/0/05/Osm_element_all.svg/16px-Osm_element_all.svg.png" decoding="async" width="16" height="16" srcset="/w/images/thumb/0/05/Osm_element_all.svg/24px-Osm_element_all.svg.png 1.5x, /w/images/thumb/0/05/Osm_element_all.svg/32px-Osm_element_all.svg.png 2x" /></a></td><td class="all-count" title="Objects with tag “waterway=beam_dam” in database"></td><td class="all-pct last-col" title="Fraction of all objects with key “waterway”">$1%</td></tr><tr><td class="node-ico taginfo-ico"><a href="https://taginfo.openstreetmap.org/tags/waterway%3Dbeam_dam" title="Nodes"><img alt="Nodes" src="/w/images/thumb/5/50/Taginfo_element_node.svg/16px-Taginfo_element_node.svg.png" decoding="async" width="16" height="16" srcset="/w/images/thumb/5/50/Taginfo_element_node.svg/24px-Taginfo_element_node.svg.png 1.5x, /w/images/thumb/5/50/Taginfo_element_node.svg/32px-Taginfo_element_node.svg.png 2x" /></a></td><td class="node-count" title="Nodes with tag “waterway=beam_dam” in database"></td><td class="node-pct last-col" title="Fraction of all nodes with key “waterway”">$1%</td></tr><tr><td class="way-ico taginfo-ico"><a href="https://taginfo.openstreetmap.org/tags/waterway%3Dbeam_dam" title="Ways"><img alt="Ways" src="/w/images/thumb/f/f4/Taginfo_element_way.svg/16px-Taginfo_element_way.svg.png" decoding="async" width="16" height="16" srcset="/w/images/thumb/f/f4/Taginfo_element_way.svg/24px-Taginfo_element_way.svg.png 1.5x, /w/images/thumb/f/f4/Taginfo_element_way.svg/32px-Taginfo_element_way.svg.png 2x" /></a></td><td class="way-count" title="Ways with tag “waterway=beam_dam” in database"></td><td class="way-pct last-col" title="Fraction of all ways with key “waterway”">$1%</td></tr><tr><td class="rel-ico taginfo-ico"><a href="https://taginfo.openstreetmap.org/tags/waterway%3Dbeam_dam" title="Relations"><img alt="Relations" src="/w/images/thumb/b/be/Taginfo_element_relation.svg/16px-Taginfo_element_relation.svg.png" decoding="async" width="16" height="16" srcset="/w/images/thumb/b/be/Taginfo_element_relation.svg/24px-Taginfo_element_relation.svg.png 1.5x, /w/images/thumb/b/be/Taginfo_element_relation.svg/32px-Taginfo_element_relation.svg.png 2x" /></a></td><td class="rel-count" title="Relations with tag “waterway=beam_dam” in database"></td><td class="rel-pct last-col" title="Fraction of all relations with key “waterway”">$1%</td></tr></tbody></table></div><div class="taginfo-logo"><span class="plainlinks"><a class="external text" href="https://taginfo.openstreetmap.org/tags/waterway%3Dbeam_dam">More details at tag<b>info</b></a></span></div></div><div class="taginfo-fallback-link"><a class="external text" href="https://taginfo.openstreetmap.org/tags/waterway%3Dbeam_dam">More details at tag<b>info</b></a></div> </td></tr></tbody></table> <p>Related tags: <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:waterway" title="Key:waterway">waterway</a></bdi>=<a href="/wiki/Tag:waterway%3Ddam" title="Tag:waterway=dam"><bdi>dam</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:waterway" title="Key:waterway">waterway</a></bdi>=<a href="/wiki/Tag:waterway%3Dweir" title="Tag:waterway=weir"><bdi>weir</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:waterway" title="Key:waterway">waterway</a></bdi>=<a href="/wiki/Tag:waterway%3Dfloating_barrier" title="Tag:waterway=floating barrier"><bdi>floating_barrier</bdi></a></tt> </p> <h2><span class="mw-headline" id="Definitions_and_tagging">Definitions and tagging</span></h2> <p>There are two main types of check dams: </p> <ol><li>Solid (or closed) check dams</li> <li>Open check dams</li></ol> <h3><span class="mw-headline" id="Main_tags">Main tags</span></h3> <p>Map a check dam as a <a href="/wiki/Node" title="node"><img alt="node" src="/w/images/thumb/7/76/Osm_element_node.svg/20px-Osm_element_node.svg.png" decoding="async" width="20" height="20" style="vertical-align: text-bottom" srcset="/w/images/thumb/7/76/Osm_element_node.svg/30px-Osm_element_node.svg.png 1.5x, /w/images/thumb/7/76/Osm_element_node.svg/40px-Osm_element_node.svg.png 2x" /></a> node on a stream or river. Larger check dams may be mapped as a <a href="/wiki/Way" title="way"><img alt="way" src="/w/images/thumb/e/ee/Osm_element_way.svg/20px-Osm_element_way.svg.png" decoding="async" width="20" height="20" style="vertical-align: text-bottom" srcset="/w/images/thumb/e/ee/Osm_element_way.svg/30px-Osm_element_way.svg.png 1.5x, /w/images/thumb/e/ee/Osm_element_way.svg/40px-Osm_element_way.svg.png 2x" /></a> way, where one node should be shared with the stream or river it crosses. Similar to <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:waterway" title="Key:waterway">waterway</a></bdi>=<a href="/wiki/Tag:waterway%3Dweir" title="Tag:waterway=weir"><bdi>weir</bdi></a></tt> and <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:natural" title="Key:natural">natural</a></bdi>=<a href="/wiki/Tag:natural%3Dcliff" title="Tag:natural=cliff"><bdi>cliff</bdi></a></tt>, the right side of the way should be the lower side, i.e. facing downstream. Only the main transverse structure should be tagged as <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:waterway" title="Key:waterway">waterway</a></bdi>=<a href="/wiki/Tag:waterway%3Dcheck_dam" class="mw-redirect" title="Tag:waterway=check dam"><bdi>check_dam</bdi></a></tt>. Use, for example, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:man_made" title="Key:man made">man_made</a></bdi>=<a href="/wiki/Tag:man_made%3Dembankment" title="Tag:man made=embankment"><bdi>embankment</bdi></a></tt> for earthen embankments extending from the check dam to surround a debris basin (<a class="external text" href="https://www.openstreetmap.org/way/944051475">example</a>). </p> <table class="wikitable"> <caption> </caption> <tbody><tr> <th>Key</th> <th>Values</th> <th>Description </th> </tr></tbody><caption> </caption> <tbody><tr><td><tt style="background:#EEF;font-size:1em;line-height:1.6;white-space:nowrap" dir="ltr" class="mw-content-ltr"><bdi style="white-space:nowrap"><a href="/wiki/Key:waterway" title="Key:waterway">waterway</a></bdi></tt></td> <td><tt style="background:#EEF;font-size:1em;line-height:1.6" dir="ltr">check_dam</tt></td> <td>Main tag for any check dam </td> </tr></tbody><caption> </caption> <tbody><tr><td><tt style="background:#EEF;font-size:1em;line-height:1.6;white-space:nowrap" dir="ltr" class="mw-content-ltr"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi></tt></td> <td><tt style="background:#EEF;font-size:1em;line-height:1.6" dir="ltr">solid</tt>, <tt style="background:#EEF;font-size:1em;line-height:1.6" dir="ltr">slit</tt>, <tt style="background:#EEF;font-size:1em;line-height:1.6" dir="ltr">slot</tt>, <tt style="background:#EEF;font-size:1em;line-height:1.6" dir="ltr">rake</tt>, <tt style="background:#EEF;font-size:1em;line-height:1.6" dir="ltr">beam</tt>, <tt style="background:#EEF;font-size:1em;line-height:1.6" dir="ltr">net</tt>, <tt style="background:#EEF;font-size:1em;line-height:1.6" dir="ltr">frame</tt></td> <td>Specifies the type of check dam (the default is assumed to be <tt style="background:#EEF;font-size:1em;line-height:1.6" dir="ltr">solid</tt>) </td> </tr></tbody><caption> </caption> <tbody><tr><td><tt style="background:#EEF;font-size:1em;line-height:1.6;white-space:nowrap" dir="ltr" class="mw-content-ltr"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam:screen&action=edit&redlink=1" class="new" title="Key:check dam:screen (page does not exist)">check_dam:screen</a></bdi></tt></td> <td><tt style="background:#EEF;font-size:1em;line-height:1.6" dir="ltr">rake</tt>, <tt style="background:#EEF;font-size:1em;line-height:1.6" dir="ltr">beam</tt>, <tt style="background:#EEF;font-size:1em;line-height:1.6" dir="ltr">grill</tt></td> <td>Specifies the type of screen at the check dam opening (if it exists) </td> </tr></tbody><caption> </caption> <tbody><tr><td><tt style="background:#EEF;font-size:1em;line-height:1.6;white-space:nowrap" dir="ltr" class="mw-content-ltr"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:screen:material&action=edit&redlink=1" class="new" title="Key:screen:material (page does not exist)">screen:material</a></bdi></tt></td> <td><tt style="background:#EEF;font-size:1em;line-height:1.6" dir="ltr">metal</tt>, <tt style="background:#EEF;font-size:1em;line-height:1.6" dir="ltr">wood</tt>, <tt style="background:#EEF;font-size:1em;line-height:1.6" dir="ltr">...</tt></td> <td>Specifies the material of the screen (if it exists) </td></tr></tbody></table> <h3><span class="mw-headline" id="Tags_used_in_conjunction">Tags used in conjunction</span></h3> <table class="wikitable"> <caption>Tagging scheme for <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:waterway" title="Key:waterway">waterway</a></bdi>=<a href="/wiki/Tag:waterway%3Dcheck_dam" class="mw-redirect" title="Tag:waterway=check dam"><bdi>check_dam</bdi></a></tt> </caption> <tbody><tr> <th>Tag </th> <th>Description </th> <th>Example </th></tr> <tr> <td><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:name" title="Key:name">name</a></bdi>=*</tt> </td> <td>Name of the check dam (if applicable) </td> <td><tt style="background:#EEF;font-size:1em;line-height:1.6" dir="ltr">...</tt> </td></tr> <tr> <td><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:material" title="Key:material">material</a></bdi>=*</tt> </td> <td>Describes the material of the main structure of the check dam </td> <td><tt style="background:#EEF;font-size:1em;line-height:1.6" dir="ltr">concrete</tt>, <tt style="background:#EEF;font-size:1em;line-height:1.6" dir="ltr">wood</tt>, <tt style="background:#EEF;font-size:1em;line-height:1.6" dir="ltr">metal</tt>, ... </td></tr> <tr> <td><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:height" title="Key:height">height</a></bdi>=*</tt> </td> <td>Height of the main structure of the check dam </td> <td> </td></tr> <tr> <td><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:operator" title="Key:operator">operator</a></bdi>=*</tt> </td> <td>Name of the operator (if known) </td> <td> </td></tr></tbody></table> <h3><span class="mw-headline" id="Solid_check_dams">Solid check dams</span></h3> <p>Solid check dams are structures without larger openings through which debris can pass, so that sediment accumulates behind and most water flows over the top of the check dam. They can be somewhat permeable to water, especially simpler constructions from rock, wood or gabion, but concrete check dams also often have small <i>weep holes</i> for drainage. </p><p>Solid check dams are often characterized and can be distinguished from weirs by their wings, solid foundations that rise towards the sides in a V-shape and protect the riverbed from erosion. Water should never flow over the wings even during extreme flow events. Often many solid check dams are built in series to reduce the speed of flow in steep sections of a stream (with the foot of one aligned with the crest of the next one). </p> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Check_dam_barcelonnette.JPG" class="image" title="check_dam=solid"><img alt="check_dam=solid" src="https://upload.wikimedia.org/wikipedia/commons/thumb/2/25/Check_dam_barcelonnette.JPG/267px-Check_dam_barcelonnette.JPG" decoding="async" width="267" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/2/25/Check_dam_barcelonnette.JPG/400px-Check_dam_barcelonnette.JPG 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/2/25/Check_dam_barcelonnette.JPG/533px-Check_dam_barcelonnette.JPG 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dsolid&action=edit&redlink=1" class="new" title="Tag:check dam=solid (page does not exist)"><bdi>solid</bdi></a></tt> </p> </div> </div></li> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Verbauung_Griesbach_Fritzens.jpg" class="image" title="check_dam=solid (multiple)"><img alt="check_dam=solid (multiple)" src="https://upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Verbauung_Griesbach_Fritzens.jpg/267px-Verbauung_Griesbach_Fritzens.jpg" decoding="async" width="267" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Verbauung_Griesbach_Fritzens.jpg/400px-Verbauung_Griesbach_Fritzens.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Verbauung_Griesbach_Fritzens.jpg/533px-Verbauung_Griesbach_Fritzens.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dsolid&action=edit&redlink=1" class="new" title="Tag:check dam=solid (page does not exist)"><bdi>solid</bdi></a></tt> (multiple) </p> </div> </div></li> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Wildbachverbauung.JPG" class="image" title="check_dam=solid, material=wood (multiple)"><img alt="check_dam=solid, material=wood (multiple)" src="https://upload.wikimedia.org/wikipedia/commons/thumb/b/be/Wildbachverbauung.JPG/133px-Wildbachverbauung.JPG" decoding="async" width="133" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/b/be/Wildbachverbauung.JPG/200px-Wildbachverbauung.JPG 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/b/be/Wildbachverbauung.JPG/266px-Wildbachverbauung.JPG 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dsolid&action=edit&redlink=1" class="new" title="Tag:check dam=solid (page does not exist)"><bdi>solid</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:material" title="Key:material">material</a></bdi>=<a href="/w/index.php?title=Tag:material%3Dwood&action=edit&redlink=1" class="new" title="Tag:material=wood (page does not exist)"><bdi>wood</bdi></a></tt> (multiple) </p> </div> </div></li> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Log_dam_in_a_gully_-_NARA_-_286165.jpg" class="image" title="check_dam=solid, material=wood"><img alt="check_dam=solid, material=wood" src="https://upload.wikimedia.org/wikipedia/commons/thumb/8/85/Log_dam_in_a_gully_-_NARA_-_286165.jpg/289px-Log_dam_in_a_gully_-_NARA_-_286165.jpg" decoding="async" width="289" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/8/85/Log_dam_in_a_gully_-_NARA_-_286165.jpg/434px-Log_dam_in_a_gully_-_NARA_-_286165.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/8/85/Log_dam_in_a_gully_-_NARA_-_286165.jpg/578px-Log_dam_in_a_gully_-_NARA_-_286165.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dsolid&action=edit&redlink=1" class="new" title="Tag:check dam=solid (page does not exist)"><bdi>solid</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:material" title="Key:material">material</a></bdi>=<a href="/w/index.php?title=Tag:material%3Dwood&action=edit&redlink=1" class="new" title="Tag:material=wood (page does not exist)"><bdi>wood</bdi></a></tt> </p> </div> </div></li> </ul> <h3><span class="mw-headline" id="Open_check_dams">Open check dams</span></h3> <p>Open check dams allow free flow of water through the main structure during normal times. They can be further classified into different subtypes. Open check dams often have an access road to remove debris from the basin upstream of the check dam after torrential flow events. </p> <h4><span class="mw-headline" id="Slot_check_dam">Slot check dam</span></h4> <p>Check dam with holes (slots) during which water and smaller sediment can flow during normal times. </p> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Gspan-Sperre_in_der_Ehnbachklamm.jpg" class="image" title="check_dam=slot"><img alt="check_dam=slot" src="https://upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Gspan-Sperre_in_der_Ehnbachklamm.jpg/134px-Gspan-Sperre_in_der_Ehnbachklamm.jpg" decoding="async" width="134" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Gspan-Sperre_in_der_Ehnbachklamm.jpg/201px-Gspan-Sperre_in_der_Ehnbachklamm.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Gspan-Sperre_in_der_Ehnbachklamm.jpg/268px-Gspan-Sperre_in_der_Ehnbachklamm.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dslot&action=edit&redlink=1" class="new" title="Tag:check dam=slot (page does not exist)"><bdi>slot</bdi></a></tt> </p> </div> </div></li> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Yatategi_sabo_dam.jpg" class="image" title="check_dam=slot"><img alt="check_dam=slot" src="https://upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Yatategi_sabo_dam.jpg/267px-Yatategi_sabo_dam.jpg" decoding="async" width="267" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Yatategi_sabo_dam.jpg/400px-Yatategi_sabo_dam.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Yatategi_sabo_dam.jpg/533px-Yatategi_sabo_dam.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dslot&action=edit&redlink=1" class="new" title="Tag:check dam=slot (page does not exist)"><bdi>slot</bdi></a></tt> </p> </div> </div></li> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:M%C3%A8bre_check_dam_2021-06-27.jpg" class="image" title="check_dam=slot,material=concrete,check_dam:screen=rake,screen:material=metal"><img alt="check_dam=slot,material=concrete,check_dam:screen=rake,screen:material=metal" src="https://upload.wikimedia.org/wikipedia/commons/thumb/9/94/M%C3%A8bre_check_dam_2021-06-27.jpg/267px-M%C3%A8bre_check_dam_2021-06-27.jpg" decoding="async" width="267" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/9/94/M%C3%A8bre_check_dam_2021-06-27.jpg/400px-M%C3%A8bre_check_dam_2021-06-27.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/9/94/M%C3%A8bre_check_dam_2021-06-27.jpg/533px-M%C3%A8bre_check_dam_2021-06-27.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dslot&action=edit&redlink=1" class="new" title="Tag:check dam=slot (page does not exist)"><bdi>slot</bdi></a></tt>,<tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:material" title="Key:material">material</a></bdi>=<a href="/wiki/Tag:material%3Dconcrete" title="Tag:material=concrete"><bdi>concrete</bdi></a></tt>,<tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam:screen&action=edit&redlink=1" class="new" title="Key:check dam:screen (page does not exist)">check_dam:screen</a></bdi>=<a href="/w/index.php?title=Tag:check_dam:screen%3Drake&action=edit&redlink=1" class="new" title="Tag:check dam:screen=rake (page does not exist)"><bdi>rake</bdi></a></tt>,<tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:screen:material&action=edit&redlink=1" class="new" title="Key:screen:material (page does not exist)">screen:material</a></bdi>=<a href="/w/index.php?title=Tag:screen:material%3Dmetal&action=edit&redlink=1" class="new" title="Tag:screen:material=metal (page does not exist)"><bdi>metal</bdi></a></tt> </p> </div> </div></li> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Wildwassersperre.JPG" class="image" title="check_dam=slot"><img alt="check_dam=slot" src="https://upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Wildwassersperre.JPG/265px-Wildwassersperre.JPG" decoding="async" width="265" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Wildwassersperre.JPG/397px-Wildwassersperre.JPG 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Wildwassersperre.JPG/529px-Wildwassersperre.JPG 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dslot&action=edit&redlink=1" class="new" title="Tag:check dam=slot (page does not exist)"><bdi>slot</bdi></a></tt> </p> </div> </div></li> </ul> <h4><span class="mw-headline" id="Slit_check_dam">Slit check dam</span></h4> <p>Check dam with one or more narrow vertical slits. </p> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Pettenbach_Seisenburg_Wildbachverbauung.jpg" class="image" title="check_dam=slit, check_dam:screen=grill, screen:material=metal"><img alt="check_dam=slit, check_dam:screen=grill, screen:material=metal" src="https://upload.wikimedia.org/wikipedia/commons/thumb/2/26/Pettenbach_Seisenburg_Wildbachverbauung.jpg/300px-Pettenbach_Seisenburg_Wildbachverbauung.jpg" decoding="async" width="300" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/2/26/Pettenbach_Seisenburg_Wildbachverbauung.jpg/450px-Pettenbach_Seisenburg_Wildbachverbauung.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/2/26/Pettenbach_Seisenburg_Wildbachverbauung.jpg/600px-Pettenbach_Seisenburg_Wildbachverbauung.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dslit&action=edit&redlink=1" class="new" title="Tag:check dam=slit (page does not exist)"><bdi>slit</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam:screen&action=edit&redlink=1" class="new" title="Key:check dam:screen (page does not exist)">check_dam:screen</a></bdi>=<a href="/w/index.php?title=Tag:check_dam:screen%3Dgrill&action=edit&redlink=1" class="new" title="Tag:check dam:screen=grill (page does not exist)"><bdi>grill</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:screen:material&action=edit&redlink=1" class="new" title="Key:screen:material (page does not exist)">screen:material</a></bdi>=<a href="/w/index.php?title=Tag:screen:material%3Dmetal&action=edit&redlink=1" class="new" title="Tag:screen:material=metal (page does not exist)"><bdi>metal</bdi></a></tt> </p> </div> </div></li> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:20.5px auto;"><a href="/wiki/File:Hochwasserschutz_Gemeinde_Sachsenburg,_K%C3%A4rnten.jpg" class="image" title="check_dam=slit"><img alt="check_dam=slit" src="https://upload.wikimedia.org/wikipedia/commons/thumb/2/2c/Hochwasserschutz_Gemeinde_Sachsenburg%2C_K%C3%A4rnten.jpg/300px-Hochwasserschutz_Gemeinde_Sachsenburg%2C_K%C3%A4rnten.jpg" decoding="async" width="300" height="189" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/2/2c/Hochwasserschutz_Gemeinde_Sachsenburg%2C_K%C3%A4rnten.jpg/450px-Hochwasserschutz_Gemeinde_Sachsenburg%2C_K%C3%A4rnten.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/2/2c/Hochwasserschutz_Gemeinde_Sachsenburg%2C_K%C3%A4rnten.jpg/600px-Hochwasserschutz_Gemeinde_Sachsenburg%2C_K%C3%A4rnten.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dslit&action=edit&redlink=1" class="new" title="Tag:check dam=slit (page does not exist)"><bdi>slit</bdi></a></tt> </p> </div> </div></li> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Hochwasserschutz_in_der_Gemeinde_Malta,_K%C3%A4rnten.jpg" class="image" title="check_dam=slit"><img alt="check_dam=slit" src="https://upload.wikimedia.org/wikipedia/commons/thumb/7/7b/Hochwasserschutz_in_der_Gemeinde_Malta%2C_K%C3%A4rnten.jpg/300px-Hochwasserschutz_in_der_Gemeinde_Malta%2C_K%C3%A4rnten.jpg" decoding="async" width="300" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/7/7b/Hochwasserschutz_in_der_Gemeinde_Malta%2C_K%C3%A4rnten.jpg/450px-Hochwasserschutz_in_der_Gemeinde_Malta%2C_K%C3%A4rnten.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/7/7b/Hochwasserschutz_in_der_Gemeinde_Malta%2C_K%C3%A4rnten.jpg/600px-Hochwasserschutz_in_der_Gemeinde_Malta%2C_K%C3%A4rnten.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dslit&action=edit&redlink=1" class="new" title="Tag:check dam=slit (page does not exist)"><bdi>slit</bdi></a></tt> </p> </div> </div></li> </ul> <h4><span class="mw-headline" id="Fin_check_dam">Fin check dam</span></h4> <p>The main structure of the check dam are large fins, usually with a more gentle slope facing upstream. </p> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Check_dam_at_Ribeira_de_Santa_Luzia.jpg" class="image" title="check_dam=fin, material=concrete"><img alt="check_dam=fin, material=concrete" src="https://upload.wikimedia.org/wikipedia/commons/thumb/e/e0/Check_dam_at_Ribeira_de_Santa_Luzia.jpg/267px-Check_dam_at_Ribeira_de_Santa_Luzia.jpg" decoding="async" width="267" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/e/e0/Check_dam_at_Ribeira_de_Santa_Luzia.jpg/400px-Check_dam_at_Ribeira_de_Santa_Luzia.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/e/e0/Check_dam_at_Ribeira_de_Santa_Luzia.jpg/533px-Check_dam_at_Ribeira_de_Santa_Luzia.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dfin&action=edit&redlink=1" class="new" title="Tag:check dam=fin (page does not exist)"><bdi>fin</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:material" title="Key:material">material</a></bdi>=<a href="/wiki/Tag:material%3Dconcrete" title="Tag:material=concrete"><bdi>concrete</bdi></a></tt> </p> </div> </div></li> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:18.5px auto;"><a href="/wiki/File:Mouth_of_Gamsbach_in_Assling_02.jpg" class="image" title="check_dam=fin, material=concrete, check_dam:screen=beam, screen:material=metal"><img alt="check_dam=fin, material=concrete, check_dam:screen=beam, screen:material=metal" src="https://upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Mouth_of_Gamsbach_in_Assling_02.jpg/300px-Mouth_of_Gamsbach_in_Assling_02.jpg" decoding="async" width="300" height="193" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Mouth_of_Gamsbach_in_Assling_02.jpg/450px-Mouth_of_Gamsbach_in_Assling_02.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Mouth_of_Gamsbach_in_Assling_02.jpg/600px-Mouth_of_Gamsbach_in_Assling_02.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dfin&action=edit&redlink=1" class="new" title="Tag:check dam=fin (page does not exist)"><bdi>fin</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:material" title="Key:material">material</a></bdi>=<a href="/wiki/Tag:material%3Dconcrete" title="Tag:material=concrete"><bdi>concrete</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam:screen&action=edit&redlink=1" class="new" title="Key:check dam:screen (page does not exist)">check_dam:screen</a></bdi>=<a href="/w/index.php?title=Tag:check_dam:screen%3Dbeam&action=edit&redlink=1" class="new" title="Tag:check dam:screen=beam (page does not exist)"><bdi>beam</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:screen:material&action=edit&redlink=1" class="new" title="Key:screen:material (page does not exist)">screen:material</a></bdi>=<a href="/w/index.php?title=Tag:screen:material%3Dmetal&action=edit&redlink=1" class="new" title="Tag:screen:material=metal (page does not exist)"><bdi>metal</bdi></a></tt> </p> </div> </div></li> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Hochwasserschutz_-_panoramio.jpg" class="image" title="check_dam=fin, material=concrete, check_dam:screen=beam, screen:material=metal"><img alt="check_dam=fin, material=concrete, check_dam:screen=beam, screen:material=metal" src="https://upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Hochwasserschutz_-_panoramio.jpg/267px-Hochwasserschutz_-_panoramio.jpg" decoding="async" width="267" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Hochwasserschutz_-_panoramio.jpg/400px-Hochwasserschutz_-_panoramio.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Hochwasserschutz_-_panoramio.jpg/533px-Hochwasserschutz_-_panoramio.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dfin&action=edit&redlink=1" class="new" title="Tag:check dam=fin (page does not exist)"><bdi>fin</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:material" title="Key:material">material</a></bdi>=<a href="/wiki/Tag:material%3Dconcrete" title="Tag:material=concrete"><bdi>concrete</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam:screen&action=edit&redlink=1" class="new" title="Key:check dam:screen (page does not exist)">check_dam:screen</a></bdi>=<a href="/w/index.php?title=Tag:check_dam:screen%3Dbeam&action=edit&redlink=1" class="new" title="Tag:check dam:screen=beam (page does not exist)"><bdi>beam</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:screen:material&action=edit&redlink=1" class="new" title="Key:screen:material (page does not exist)">screen:material</a></bdi>=<a href="/w/index.php?title=Tag:screen:material%3Dmetal&action=edit&redlink=1" class="new" title="Tag:screen:material=metal (page does not exist)"><bdi>metal</bdi></a></tt> </p> </div> </div></li> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Murbrecher_near_Gr%C3%BCneggalm.jpg" class="image" title="check_dam=fin, material=metal"><img alt="check_dam=fin, material=metal" src="https://upload.wikimedia.org/wikipedia/commons/thumb/a/a1/Murbrecher_near_Gr%C3%BCneggalm.jpg/256px-Murbrecher_near_Gr%C3%BCneggalm.jpg" decoding="async" width="256" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/a/a1/Murbrecher_near_Gr%C3%BCneggalm.jpg/384px-Murbrecher_near_Gr%C3%BCneggalm.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/a/a1/Murbrecher_near_Gr%C3%BCneggalm.jpg/512px-Murbrecher_near_Gr%C3%BCneggalm.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dfin&action=edit&redlink=1" class="new" title="Tag:check dam=fin (page does not exist)"><bdi>fin</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:material" title="Key:material">material</a></bdi>=<a href="/w/index.php?title=Tag:material%3Dmetal&action=edit&redlink=1" class="new" title="Tag:material=metal (page does not exist)"><bdi>metal</bdi></a></tt> </p> </div> </div></li> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Mill_Creek_drift_catcher_with_train.jpg" class="image" title="check_dam=fin, material=concrete"><img alt="check_dam=fin, material=concrete" src="https://upload.wikimedia.org/wikipedia/commons/thumb/f/fc/Mill_Creek_drift_catcher_with_train.jpg/267px-Mill_Creek_drift_catcher_with_train.jpg" decoding="async" width="267" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/f/fc/Mill_Creek_drift_catcher_with_train.jpg/400px-Mill_Creek_drift_catcher_with_train.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/f/fc/Mill_Creek_drift_catcher_with_train.jpg/533px-Mill_Creek_drift_catcher_with_train.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dfin&action=edit&redlink=1" class="new" title="Tag:check dam=fin (page does not exist)"><bdi>fin</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:material" title="Key:material">material</a></bdi>=<a href="/wiki/Tag:material%3Dconcrete" title="Tag:material=concrete"><bdi>concrete</bdi></a></tt> </p> </div> </div></li> </ul> <h4><span class="mw-headline" id="Rake_check_dam">Rake check dam</span></h4> <p>The main structure of the check dam consists of vertical piles. </p> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Raababach_01.jpg" class="image" title="check_dam=rake, material=metal"><img alt="check_dam=rake, material=metal" src="https://upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Raababach_01.jpg/244px-Raababach_01.jpg" decoding="async" width="244" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Raababach_01.jpg/365px-Raababach_01.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Raababach_01.jpg/487px-Raababach_01.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Drake&action=edit&redlink=1" class="new" title="Tag:check dam=rake (page does not exist)"><bdi>rake</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:material" title="Key:material">material</a></bdi>=<a href="/w/index.php?title=Tag:material%3Dmetal&action=edit&redlink=1" class="new" title="Tag:material=metal (page does not exist)"><bdi>metal</bdi></a></tt> </p> </div> </div></li> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Geschiebesperre_bei_Baumkirchen.jpg" class="image" title="check_dam=rake, material=metal"><img alt="check_dam=rake, material=metal" src="https://upload.wikimedia.org/wikipedia/commons/thumb/4/42/Geschiebesperre_bei_Baumkirchen.jpg/299px-Geschiebesperre_bei_Baumkirchen.jpg" decoding="async" width="299" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/4/42/Geschiebesperre_bei_Baumkirchen.jpg/448px-Geschiebesperre_bei_Baumkirchen.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/4/42/Geschiebesperre_bei_Baumkirchen.jpg/598px-Geschiebesperre_bei_Baumkirchen.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Drake&action=edit&redlink=1" class="new" title="Tag:check dam=rake (page does not exist)"><bdi>rake</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:material" title="Key:material">material</a></bdi>=<a href="/w/index.php?title=Tag:material%3Dmetal&action=edit&redlink=1" class="new" title="Tag:material=metal (page does not exist)"><bdi>metal</bdi></a></tt> </p> </div> </div></li> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Culvert_Rake_Check_Dam_2021-10-12.jpg" class="image" title="check_dam=rake, material=metal"><img alt="check_dam=rake, material=metal" src="https://upload.wikimedia.org/wikipedia/commons/thumb/c/cc/Culvert_Rake_Check_Dam_2021-10-12.jpg/267px-Culvert_Rake_Check_Dam_2021-10-12.jpg" decoding="async" width="267" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/c/cc/Culvert_Rake_Check_Dam_2021-10-12.jpg/400px-Culvert_Rake_Check_Dam_2021-10-12.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/c/cc/Culvert_Rake_Check_Dam_2021-10-12.jpg/533px-Culvert_Rake_Check_Dam_2021-10-12.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Drake&action=edit&redlink=1" class="new" title="Tag:check dam=rake (page does not exist)"><bdi>rake</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:material" title="Key:material">material</a></bdi>=<a href="/w/index.php?title=Tag:material%3Dmetal&action=edit&redlink=1" class="new" title="Tag:material=metal (page does not exist)"><bdi>metal</bdi></a></tt> </p> </div> </div></li> </ul> <h4><span class="mw-headline" id="Beam_check_dam">Beam check dam</span></h4> <p>The main structure of the check dam consists of horizontal beams. </p> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Geschiebesperre_am_Wattenbach.jpg" class="image" title="check_dam=beam, check_dam:screen=rake, material=metal, screen:material=metal"><img alt="check_dam=beam, check_dam:screen=rake, material=metal, screen:material=metal" src="https://upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Geschiebesperre_am_Wattenbach.jpg/299px-Geschiebesperre_am_Wattenbach.jpg" decoding="async" width="299" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Geschiebesperre_am_Wattenbach.jpg/448px-Geschiebesperre_am_Wattenbach.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Geschiebesperre_am_Wattenbach.jpg/598px-Geschiebesperre_am_Wattenbach.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dbeam&action=edit&redlink=1" class="new" title="Tag:check dam=beam (page does not exist)"><bdi>beam</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam:screen&action=edit&redlink=1" class="new" title="Key:check dam:screen (page does not exist)">check_dam:screen</a></bdi>=<a href="/w/index.php?title=Tag:check_dam:screen%3Drake&action=edit&redlink=1" class="new" title="Tag:check dam:screen=rake (page does not exist)"><bdi>rake</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:material" title="Key:material">material</a></bdi>=<a href="/w/index.php?title=Tag:material%3Dmetal&action=edit&redlink=1" class="new" title="Tag:material=metal (page does not exist)"><bdi>metal</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:screen:material&action=edit&redlink=1" class="new" title="Key:screen:material (page does not exist)">screen:material</a></bdi>=<a href="/w/index.php?title=Tag:screen:material%3Dmetal&action=edit&redlink=1" class="new" title="Tag:screen:material=metal (page does not exist)"><bdi>metal</bdi></a></tt> </p> </div> </div></li> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Polenztal_Flussrechen.JPG" class="image" title="check_dam=beam, check_dam:screen=rake, material=wood, screen:material=wood"><img alt="check_dam=beam, check_dam:screen=rake, material=wood, screen:material=wood" src="https://upload.wikimedia.org/wikipedia/commons/thumb/1/17/Polenztal_Flussrechen.JPG/300px-Polenztal_Flussrechen.JPG" decoding="async" width="300" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/1/17/Polenztal_Flussrechen.JPG/450px-Polenztal_Flussrechen.JPG 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/1/17/Polenztal_Flussrechen.JPG/600px-Polenztal_Flussrechen.JPG 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dbeam&action=edit&redlink=1" class="new" title="Tag:check dam=beam (page does not exist)"><bdi>beam</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam:screen&action=edit&redlink=1" class="new" title="Key:check dam:screen (page does not exist)">check_dam:screen</a></bdi>=<a href="/w/index.php?title=Tag:check_dam:screen%3Drake&action=edit&redlink=1" class="new" title="Tag:check dam:screen=rake (page does not exist)"><bdi>rake</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:material" title="Key:material">material</a></bdi>=<a href="/w/index.php?title=Tag:material%3Dwood&action=edit&redlink=1" class="new" title="Tag:material=wood (page does not exist)"><bdi>wood</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:screen:material&action=edit&redlink=1" class="new" title="Key:screen:material (page does not exist)">screen:material</a></bdi>=<a href="/w/index.php?title=Tag:screen:material%3Dwood&action=edit&redlink=1" class="new" title="Tag:screen:material=wood (page does not exist)"><bdi>wood</bdi></a></tt> </p> </div> </div></li> </ul> <h4><span class="mw-headline" id="Net_check_dam">Net check dam</span></h4> <p>The check dam is a flexible net, often made from metal. </p> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Debris_flow_lawina_4.jpg" class="image" title="check_dam=net, material=metal"><img alt="check_dam=net, material=metal" src="https://upload.wikimedia.org/wikipedia/commons/thumb/f/f1/Debris_flow_lawina_4.jpg/267px-Debris_flow_lawina_4.jpg" decoding="async" width="267" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/f/f1/Debris_flow_lawina_4.jpg/400px-Debris_flow_lawina_4.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/f/f1/Debris_flow_lawina_4.jpg/533px-Debris_flow_lawina_4.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dnet&action=edit&redlink=1" class="new" title="Tag:check dam=net (page does not exist)"><bdi>net</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:material" title="Key:material">material</a></bdi>=<a href="/w/index.php?title=Tag:material%3Dmetal&action=edit&redlink=1" class="new" title="Tag:material=metal (page does not exist)"><bdi>metal</bdi></a></tt> </p> </div> </div></li> </ul> <h4><span class="mw-headline" id="Frame_check_dam">Frame check dam</span></h4> <p>Frame check dams consist of a rigid 3-dimensional structure, e.g. made of metal pipes. They are most common in Japan. </p> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Slit_check_dam-2.jpg" class="image" title="check_dam=frame, material=metal"><img alt="check_dam=frame, material=metal" src="https://upload.wikimedia.org/wikipedia/commons/thumb/7/76/Slit_check_dam-2.jpg/267px-Slit_check_dam-2.jpg" decoding="async" width="267" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/7/76/Slit_check_dam-2.jpg/400px-Slit_check_dam-2.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/7/76/Slit_check_dam-2.jpg/533px-Slit_check_dam-2.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dframe&action=edit&redlink=1" class="new" title="Tag:check dam=frame (page does not exist)"><bdi>frame</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:material" title="Key:material">material</a></bdi>=<a href="/w/index.php?title=Tag:material%3Dmetal&action=edit&redlink=1" class="new" title="Tag:material=metal (page does not exist)"><bdi>metal</bdi></a></tt> </p> </div> </div></li> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Susugaya,_Kiyokawa,_Aiko_District,_Kanagawa_Prefecture_243-0112,_Japan_-_panoramio_-_SYM50cc_EMR_(7).jpg" class="image" title="check_dam=frame, material=metal"><img alt="check_dam=frame, material=metal" src="https://upload.wikimedia.org/wikipedia/commons/thumb/3/30/Susugaya%2C_Kiyokawa%2C_Aiko_District%2C_Kanagawa_Prefecture_243-0112%2C_Japan_-_panoramio_-_SYM50cc_EMR_%287%29.jpg/267px-Susugaya%2C_Kiyokawa%2C_Aiko_District%2C_Kanagawa_Prefecture_243-0112%2C_Japan_-_panoramio_-_SYM50cc_EMR_%287%29.jpg" decoding="async" width="267" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/3/30/Susugaya%2C_Kiyokawa%2C_Aiko_District%2C_Kanagawa_Prefecture_243-0112%2C_Japan_-_panoramio_-_SYM50cc_EMR_%287%29.jpg/400px-Susugaya%2C_Kiyokawa%2C_Aiko_District%2C_Kanagawa_Prefecture_243-0112%2C_Japan_-_panoramio_-_SYM50cc_EMR_%287%29.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/3/30/Susugaya%2C_Kiyokawa%2C_Aiko_District%2C_Kanagawa_Prefecture_243-0112%2C_Japan_-_panoramio_-_SYM50cc_EMR_%287%29.jpg/533px-Susugaya%2C_Kiyokawa%2C_Aiko_District%2C_Kanagawa_Prefecture_243-0112%2C_Japan_-_panoramio_-_SYM50cc_EMR_%287%29.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dframe&action=edit&redlink=1" class="new" title="Tag:check dam=frame (page does not exist)"><bdi>frame</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:material" title="Key:material">material</a></bdi>=<a href="/w/index.php?title=Tag:material%3Dmetal&action=edit&redlink=1" class="new" title="Tag:material=metal (page does not exist)"><bdi>metal</bdi></a></tt> </p> </div> </div></li> </ul> <h3><span class="mw-headline" id="Screens">Screens</span></h3> <p>Check dams often also have a screen at the opening(s) to better retain or filter debris. This may be marked as <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam:screen&action=edit&redlink=1" class="new" title="Key:check dam:screen (page does not exist)">check_dam:screen</a></bdi>=<a href="/w/index.php?title=Tag:check_dam:screen%3Drake&action=edit&redlink=1" class="new" title="Tag:check dam:screen=rake (page does not exist)"><bdi>rake</bdi></a></tt> (screen consisting of vertical elements), <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam:screen&action=edit&redlink=1" class="new" title="Key:check dam:screen (page does not exist)">check_dam:screen</a></bdi>=<a href="/w/index.php?title=Tag:check_dam:screen%3Dbeam&action=edit&redlink=1" class="new" title="Tag:check dam:screen=beam (page does not exist)"><bdi>beam</bdi></a></tt> (screen consisting of horizontal elements) or <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam:screen&action=edit&redlink=1" class="new" title="Key:check dam:screen (page does not exist)">check_dam:screen</a></bdi>=<a href="/w/index.php?title=Tag:check_dam:screen%3Dgrill&action=edit&redlink=1" class="new" title="Tag:check dam:screen=grill (page does not exist)"><bdi>grill</bdi></a></tt> (vertical and horizontal elements). If no better value is available, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam:screen&action=edit&redlink=1" class="new" title="Key:check dam:screen (page does not exist)">check_dam:screen</a></bdi>=<a href="/w/index.php?title=Tag:check_dam:screen%3Dyes&action=edit&redlink=1" class="new" title="Tag:check dam:screen=yes (page does not exist)"><bdi>yes</bdi></a></tt> may be used to indicate the presence of a screen. </p> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Presa_2.jpg" class="image" title="check_dam=slot, check_dam:screen=beam"><img alt="check_dam=slot, check_dam:screen=beam" src="https://upload.wikimedia.org/wikipedia/commons/thumb/8/8b/Presa_2.jpg/140px-Presa_2.jpg" decoding="async" width="140" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/8/8b/Presa_2.jpg/210px-Presa_2.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/8/8b/Presa_2.jpg/280px-Presa_2.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dslot&action=edit&redlink=1" class="new" title="Tag:check dam=slot (page does not exist)"><bdi>slot</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam:screen&action=edit&redlink=1" class="new" title="Key:check dam:screen (page does not exist)">check_dam:screen</a></bdi>=<a href="/w/index.php?title=Tag:check_dam:screen%3Dbeam&action=edit&redlink=1" class="new" title="Tag:check dam:screen=beam (page does not exist)"><bdi>beam</bdi></a></tt> </p> </div> </div></li> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Verbauung_Warme_Mandling_03.jpg" class="image" title="check_dam=fin, check_dam:screen=rake, screen:material=metal"><img alt="check_dam=fin, check_dam:screen=rake, screen:material=metal" src="https://upload.wikimedia.org/wikipedia/commons/thumb/b/b8/Verbauung_Warme_Mandling_03.jpg/267px-Verbauung_Warme_Mandling_03.jpg" decoding="async" width="267" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/b/b8/Verbauung_Warme_Mandling_03.jpg/400px-Verbauung_Warme_Mandling_03.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/b/b8/Verbauung_Warme_Mandling_03.jpg/533px-Verbauung_Warme_Mandling_03.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dfin&action=edit&redlink=1" class="new" title="Tag:check dam=fin (page does not exist)"><bdi>fin</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam:screen&action=edit&redlink=1" class="new" title="Key:check dam:screen (page does not exist)">check_dam:screen</a></bdi>=<a href="/w/index.php?title=Tag:check_dam:screen%3Drake&action=edit&redlink=1" class="new" title="Tag:check dam:screen=rake (page does not exist)"><bdi>rake</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:screen:material&action=edit&redlink=1" class="new" title="Key:screen:material (page does not exist)">screen:material</a></bdi>=<a href="/w/index.php?title=Tag:screen:material%3Dmetal&action=edit&redlink=1" class="new" title="Tag:screen:material=metal (page does not exist)"><bdi>metal</bdi></a></tt> </p> </div> </div></li> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Afritz_am_See,_Geschiebedosiersperre_Tronitzerbach,_K%C3%A4rnten.jpg" class="image" title="check_dam=slit, check_dam:screen=grill, screen:material=metal (with smaller solid check dams in the foreground)"><img alt="check_dam=slit, check_dam:screen=grill, screen:material=metal (with smaller solid check dams in the foreground)" src="https://upload.wikimedia.org/wikipedia/commons/thumb/1/19/Afritz_am_See%2C_Geschiebedosiersperre_Tronitzerbach%2C_K%C3%A4rnten.jpg/267px-Afritz_am_See%2C_Geschiebedosiersperre_Tronitzerbach%2C_K%C3%A4rnten.jpg" decoding="async" width="267" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/1/19/Afritz_am_See%2C_Geschiebedosiersperre_Tronitzerbach%2C_K%C3%A4rnten.jpg/400px-Afritz_am_See%2C_Geschiebedosiersperre_Tronitzerbach%2C_K%C3%A4rnten.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/1/19/Afritz_am_See%2C_Geschiebedosiersperre_Tronitzerbach%2C_K%C3%A4rnten.jpg/533px-Afritz_am_See%2C_Geschiebedosiersperre_Tronitzerbach%2C_K%C3%A4rnten.jpg 2x" /></a></div></div> <div class="gallerytext"> <p><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam&action=edit&redlink=1" class="new" title="Key:check dam (page does not exist)">check_dam</a></bdi>=<a href="/w/index.php?title=Tag:check_dam%3Dslit&action=edit&redlink=1" class="new" title="Tag:check dam=slit (page does not exist)"><bdi>slit</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:check_dam:screen&action=edit&redlink=1" class="new" title="Key:check dam:screen (page does not exist)">check_dam:screen</a></bdi>=<a href="/w/index.php?title=Tag:check_dam:screen%3Dgrill&action=edit&redlink=1" class="new" title="Tag:check dam:screen=grill (page does not exist)"><bdi>grill</bdi></a></tt>, <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/w/index.php?title=Key:screen:material&action=edit&redlink=1" class="new" title="Key:screen:material (page does not exist)">screen:material</a></bdi>=<a href="/w/index.php?title=Tag:screen:material%3Dmetal&action=edit&redlink=1" class="new" title="Tag:screen:material=metal (page does not exist)"><bdi>metal</bdi></a></tt> (with smaller solid check dams in the foreground) </p> </div> </div></li> </ul> <h3><span class="mw-headline" id="Debris_basins">Debris basins</span></h3> <p>Often, basins are built upstream of open check dams to temporarily store the debris retained by the check dam. They are only filled with water during torrential flow events. An access road allows removal of debris from the basin. Such basins should be tagged with <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:basin" title="Key:basin">basin</a></bdi>=<a href="/wiki/Tag:basin%3Ddetention" title="Tag:basin=detention"><bdi>detention</bdi></a></tt>. </p> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Geschiebesperre_am_Fallbach.jpg" class="image"><img alt="Geschiebesperre am Fallbach.jpg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/6/63/Geschiebesperre_am_Fallbach.jpg/299px-Geschiebesperre_am_Fallbach.jpg" decoding="async" width="299" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/6/63/Geschiebesperre_am_Fallbach.jpg/448px-Geschiebesperre_am_Fallbach.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/6/63/Geschiebesperre_am_Fallbach.jpg/598px-Geschiebesperre_am_Fallbach.jpg 2x" /></a></div></div> <div class="gallerytext"> </div> </div></li> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:21px auto;"><a href="/wiki/File:FEMA_-_45017_-_The_Dunsmir_Sediment_Basin_in_California.jpg" class="image"><img alt="FEMA - 45017 - The Dunsmir Sediment Basin in California.jpg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/1/1f/FEMA_-_45017_-_The_Dunsmir_Sediment_Basin_in_California.jpg/300px-FEMA_-_45017_-_The_Dunsmir_Sediment_Basin_in_California.jpg" decoding="async" width="300" height="188" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/1/1f/FEMA_-_45017_-_The_Dunsmir_Sediment_Basin_in_California.jpg/450px-FEMA_-_45017_-_The_Dunsmir_Sediment_Basin_in_California.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/1/1f/FEMA_-_45017_-_The_Dunsmir_Sediment_Basin_in_California.jpg/600px-FEMA_-_45017_-_The_Dunsmir_Sediment_Basin_in_California.jpg 2x" /></a></div></div> <div class="gallerytext"> </div> </div></li> <li class="gallerybox" style="width: 335px"><div style="width: 335px"> <div class="thumb" style="width: 330px;"><div style="margin:15px auto;"><a href="/wiki/File:Muehlbach_Jerzens.jpg" class="image"><img alt="Muehlbach Jerzens.jpg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/6/6a/Muehlbach_Jerzens.jpg/233px-Muehlbach_Jerzens.jpg" decoding="async" width="233" height="200" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/6/6a/Muehlbach_Jerzens.jpg/350px-Muehlbach_Jerzens.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/6/6a/Muehlbach_Jerzens.jpg/466px-Muehlbach_Jerzens.jpg 2x" /></a></div></div> <div class="gallerytext"> </div> </div></li> </ul> <h3><span class="mw-headline" id="Related_structures">Related structures</span></h3> <p>The following features are also barriers across waterways, but should <i>not</i> be tagged with <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:waterway" title="Key:waterway">waterway</a></bdi>=<a href="/wiki/Tag:waterway%3Dcheck_dam" class="mw-redirect" title="Tag:waterway=check dam"><bdi>check_dam</bdi></a></tt>: </p> <table class="wikitable"> <caption> Similar structures </caption> <tbody><tr> <th>Feature </th> <th>Description </th> <th>Example </th> <th>Correct tagging scheme </th></tr> <tr> <td><span class="plainlinks" title="w:en:Dam"><a rel="nofollow" class="external text" href="https://en.wikipedia.org/wiki/en:Dam"><span style="white-space:nowrap"><span style="padding:0 4px 0 1px"><img alt="" src="https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Tango_style_Wikipedia_Icon_no_shadow.svg/16px-Tango_style_Wikipedia_Icon_no_shadow.svg.png" decoding="async" title="w:en:Dam" width="16" height="16" style="vertical-align: text-top" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Tango_style_Wikipedia_Icon_no_shadow.svg/24px-Tango_style_Wikipedia_Icon_no_shadow.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Tango_style_Wikipedia_Icon_no_shadow.svg/32px-Tango_style_Wikipedia_Icon_no_shadow.svg.png 2x" /></span><span style="white-space:normal"><bdi>Dam</bdi></span></span></a></span> </td> <td>Barrier that impounds the water to form a reservoir and normally does not have water flowing over the top. <p><i>Water can freely flow over or through check dams. They may impound water only temporarily during extreme flow events when their openings are clogged with debris.</i> </p> </td> <td><div class="thumb tleft"><div class="thumbinner" style="width:302px;"><a href="/wiki/File:Amagase_Dam.jpg" class="image"><img alt="Large dam and reservoir" src="https://upload.wikimedia.org/wikipedia/commons/thumb/7/77/Amagase_Dam.jpg/300px-Amagase_Dam.jpg" decoding="async" width="300" height="200" class="thumbimage" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/7/77/Amagase_Dam.jpg/450px-Amagase_Dam.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/7/77/Amagase_Dam.jpg/600px-Amagase_Dam.jpg 2x" /></a> <div class="thumbcaption"><div class="magnify"><a href="/wiki/File:Amagase_Dam.jpg" class="internal" title="Enlarge"></a></div>Amagase dam and reservoir</div></div></div> </td> <td><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:waterway" title="Key:waterway">waterway</a></bdi>=<a href="/wiki/Tag:waterway%3Ddam" title="Tag:waterway=dam"><bdi>dam</bdi></a></tt> </td></tr> <tr> <td><span class="plainlinks" title="w:en:Weir"><a rel="nofollow" class="external text" href="https://en.wikipedia.org/wiki/en:Weir"><span style="white-space:nowrap"><span style="padding:0 4px 0 1px"><img alt="" src="https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Tango_style_Wikipedia_Icon_no_shadow.svg/16px-Tango_style_Wikipedia_Icon_no_shadow.svg.png" decoding="async" title="w:en:Weir" width="16" height="16" style="vertical-align: text-top" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Tango_style_Wikipedia_Icon_no_shadow.svg/24px-Tango_style_Wikipedia_Icon_no_shadow.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Tango_style_Wikipedia_Icon_no_shadow.svg/32px-Tango_style_Wikipedia_Icon_no_shadow.svg.png 2x" /></span><span style="white-space:normal"><bdi>Weir</bdi></span></span></a></span> </td> <td>Barrier across a stream or river over which water flows freely (usually along most of its length). Sediment should not accumulate behind them. Weirs raise the water level behind them for a certain distance. They can help prevent flooding and make rivers more navigable. <p><i>Solid check dams are backfilled with sediment, are found on steeper sections of a stream and usually have water flowing over only a small part of their width, thus do not influence the water level behind them. They are designed to handle sudden, dramatic increases in water flow and are built in areas where torrential flow events and floods are likely to happen. Often, several solid check dams in succession can be found on a short stretch of a stream (with the foot of one aligned with the crest of the next one). Water can freely flow through open check dams.</i> </p> </td> <td><div class="thumb tleft"><div class="thumbinner" style="width:302px;"><a href="/wiki/File:Rhin-Grosser-Schleusengraben-15-XI-2007-130.jpg" class="image"><img alt="Weir" src="https://upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Rhin-Grosser-Schleusengraben-15-XI-2007-130.jpg/300px-Rhin-Grosser-Schleusengraben-15-XI-2007-130.jpg" decoding="async" width="300" height="225" class="thumbimage" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Rhin-Grosser-Schleusengraben-15-XI-2007-130.jpg/450px-Rhin-Grosser-Schleusengraben-15-XI-2007-130.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Rhin-Grosser-Schleusengraben-15-XI-2007-130.jpg/600px-Rhin-Grosser-Schleusengraben-15-XI-2007-130.jpg 2x" /></a> <div class="thumbcaption"><div class="magnify"><a href="/wiki/File:Rhin-Grosser-Schleusengraben-15-XI-2007-130.jpg" class="internal" title="Enlarge"></a></div>Weir in Germany</div></div></div> </td> <td><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:waterway" title="Key:waterway">waterway</a></bdi>=<a href="/wiki/Tag:waterway%3Dweir" title="Tag:waterway=weir"><bdi>weir</bdi></a></tt> </td></tr> <tr> <td><span class="plainlinks" title="w:en:Boom_(containment)"><a rel="nofollow" class="external text" href="https://en.wikipedia.org/wiki/en:Boom_(containment)"><span style="white-space:nowrap"><span style="padding:0 4px 0 1px"><img alt="" src="https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Tango_style_Wikipedia_Icon_no_shadow.svg/16px-Tango_style_Wikipedia_Icon_no_shadow.svg.png" decoding="async" title="w:en:Boom_(containment)" width="16" height="16" style="vertical-align: text-top" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Tango_style_Wikipedia_Icon_no_shadow.svg/24px-Tango_style_Wikipedia_Icon_no_shadow.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Tango_style_Wikipedia_Icon_no_shadow.svg/32px-Tango_style_Wikipedia_Icon_no_shadow.svg.png 2x" /></span><span style="white-space:normal"><bdi>Floating barrier (boom)</bdi></span></span></a></span> </td> <td>Flexible barrier that floats on the water surface and holds back debris or serves as a navigational barrier. <p><i>Check dams are more solid structures that can handle very different water levels and larger amounts of debris.</i> </p> </td> <td><div class="thumb tleft"><div class="thumbinner" style="width:302px;"><a href="/wiki/File:Debris_on_the_Lagan,_Belfast_(geograph_1797260_by_Albert_Bridge).jpg" class="image"><img alt="Floating barrier with accumulated debris" src="https://upload.wikimedia.org/wikipedia/commons/thumb/a/a2/Debris_on_the_Lagan%2C_Belfast_%28geograph_1797260_by_Albert_Bridge%29.jpg/300px-Debris_on_the_Lagan%2C_Belfast_%28geograph_1797260_by_Albert_Bridge%29.jpg" decoding="async" width="300" height="202" class="thumbimage" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/a/a2/Debris_on_the_Lagan%2C_Belfast_%28geograph_1797260_by_Albert_Bridge%29.jpg/450px-Debris_on_the_Lagan%2C_Belfast_%28geograph_1797260_by_Albert_Bridge%29.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/a/a2/Debris_on_the_Lagan%2C_Belfast_%28geograph_1797260_by_Albert_Bridge%29.jpg/600px-Debris_on_the_Lagan%2C_Belfast_%28geograph_1797260_by_Albert_Bridge%29.jpg 2x" /></a> <div class="thumbcaption"><div class="magnify"><a href="/wiki/File:Geograph-1797260-by-Albert-Bridge.jpg" class="internal" title="Enlarge"></a></div>Floating barrier with accumulated debris in Belfast</div></div></div> </td> <td><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:waterway" title="Key:waterway">waterway</a></bdi>=<a href="/wiki/Tag:waterway%3Dfloating_barrier" title="Tag:waterway=floating barrier"><bdi>floating_barrier</bdi></a></tt> </td></tr> <tr> <td><span class="plainlinks" title="w:en:Groyne"><a rel="nofollow" class="external text" href="https://en.wikipedia.org/wiki/en:Groyne"><span style="white-space:nowrap"><span style="padding:0 4px 0 1px"><img alt="" src="https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Tango_style_Wikipedia_Icon_no_shadow.svg/16px-Tango_style_Wikipedia_Icon_no_shadow.svg.png" decoding="async" title="w:en:Groyne" width="16" height="16" style="vertical-align: text-top" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Tango_style_Wikipedia_Icon_no_shadow.svg/24px-Tango_style_Wikipedia_Icon_no_shadow.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Tango_style_Wikipedia_Icon_no_shadow.svg/32px-Tango_style_Wikipedia_Icon_no_shadow.svg.png 2x" /></span><span style="white-space:normal"><bdi>Groyne (groin)</bdi></span></span></a></span> or <span class="plainlinks" title="w:en:Wing_dam"><a rel="nofollow" class="external text" href="https://en.wikipedia.org/wiki/en:Wing_dam"><span style="white-space:nowrap"><span style="padding:0 4px 0 1px"><img alt="" src="https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Tango_style_Wikipedia_Icon_no_shadow.svg/16px-Tango_style_Wikipedia_Icon_no_shadow.svg.png" decoding="async" title="w:en:Wing_dam" width="16" height="16" style="vertical-align: text-top" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Tango_style_Wikipedia_Icon_no_shadow.svg/24px-Tango_style_Wikipedia_Icon_no_shadow.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Tango_style_Wikipedia_Icon_no_shadow.svg/32px-Tango_style_Wikipedia_Icon_no_shadow.svg.png 2x" /></span><span style="white-space:normal"><bdi>Wing dam</bdi></span></span></a></span> </td> <td>Structure that extends only partway into the river (or sea). Groynes redirect the flow of water and retain sediment and may also be used for flood control. <p><i>Check dams cover the entire width of the waterway.</i> </p> </td> <td><div class="thumb tleft"><div class="thumbinner" style="width:302px;"><a href="/wiki/File:Hattingen_Blankenstein_(Ruhrbr%C3%BCcke)_02_ies.jpg" class="image"><img alt="Groynes on a river" src="https://upload.wikimedia.org/wikipedia/commons/thumb/d/d4/Hattingen_Blankenstein_%28Ruhrbr%C3%BCcke%29_02_ies.jpg/300px-Hattingen_Blankenstein_%28Ruhrbr%C3%BCcke%29_02_ies.jpg" decoding="async" width="300" height="200" class="thumbimage" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/d/d4/Hattingen_Blankenstein_%28Ruhrbr%C3%BCcke%29_02_ies.jpg/450px-Hattingen_Blankenstein_%28Ruhrbr%C3%BCcke%29_02_ies.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/d/d4/Hattingen_Blankenstein_%28Ruhrbr%C3%BCcke%29_02_ies.jpg/600px-Hattingen_Blankenstein_%28Ruhrbr%C3%BCcke%29_02_ies.jpg 2x" /></a> <div class="thumbcaption"><div class="magnify"><a href="/wiki/File:Hattingen_Blankenstein_(Ruhrbr%C3%BCcke)_02_ies.jpg" class="internal" title="Enlarge"></a></div>Groynes on the Ruhr</div></div></div> </td> <td><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:man_made" title="Key:man made">man_made</a></bdi>=<a href="/wiki/Tag:man_made%3Dgroyne" title="Tag:man made=groyne"><bdi>groyne</bdi></a></tt> </td></tr> <tr> <td>Screens directly attached to <a href="/wiki/Proposed_features/Inlets_proposal" class="mw-redirect" title="Proposed features/Inlets proposal">inlets</a>/<a href="/wiki/Proposed_features/Outlets_proposal" class="mw-redirect" title="Proposed features/Outlets proposal">outlets</a> </td> <td>Inlets/outlets of culverts or tunnels may be equipped with screens to withhold trash and debris. <p><i>Check dams are independent structures. There may exist a separate check dam before a culvert inlet in which case it could be mapped as such.</i> </p> </td> <td><div class="thumb tleft"><div class="thumbinner" style="width:302px;"><a href="/wiki/File:Inlet_trash_screen_on_stream_-_geograph.org.uk_-_1431954.jpg" class="image"><img alt="Inlet trash screen" src="https://upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Inlet_trash_screen_on_stream_-_geograph.org.uk_-_1431954.jpg/300px-Inlet_trash_screen_on_stream_-_geograph.org.uk_-_1431954.jpg" decoding="async" width="300" height="199" class="thumbimage" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Inlet_trash_screen_on_stream_-_geograph.org.uk_-_1431954.jpg/450px-Inlet_trash_screen_on_stream_-_geograph.org.uk_-_1431954.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Inlet_trash_screen_on_stream_-_geograph.org.uk_-_1431954.jpg/600px-Inlet_trash_screen_on_stream_-_geograph.org.uk_-_1431954.jpg 2x" /></a> <div class="thumbcaption"><div class="magnify"><a href="/wiki/File:Inlet_trash_screen_on_stream_-_geograph.org.uk_-_1431954.jpg" class="internal" title="Enlarge"></a></div>Trash screen at an inlet</div></div></div> </td> <td><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:inlet" title="Key:inlet">inlet</a></bdi>=<a href="/wiki/Tag:inlet%3Dscreen" title="Tag:inlet=screen"><bdi>screen</bdi></a></tt>/<tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:outlet" title="Key:outlet">outlet</a></bdi>=<a href="/wiki/Tag:outlet%3Dscreen" title="Tag:outlet=screen"><bdi>screen</bdi></a></tt> (proposed) </td></tr> <tr> <td><span class="plainlinks" title="w:en:Trash_rack"><a rel="nofollow" class="external text" href="https://en.wikipedia.org/wiki/en:Trash_rack"><span style="white-space:nowrap"><span style="padding:0 4px 0 1px"><img alt="" src="https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Tango_style_Wikipedia_Icon_no_shadow.svg/16px-Tango_style_Wikipedia_Icon_no_shadow.svg.png" decoding="async" title="w:en:Trash_rack" width="16" height="16" style="vertical-align: text-top" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Tango_style_Wikipedia_Icon_no_shadow.svg/24px-Tango_style_Wikipedia_Icon_no_shadow.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Tango_style_Wikipedia_Icon_no_shadow.svg/32px-Tango_style_Wikipedia_Icon_no_shadow.svg.png 2x" /></span><span style="white-space:normal"><bdi>Simple trash screens</bdi></span></span></a></span> </td> <td>Basic screens to withhold trash and small debris that accumulate at normal flow rates. <p><i>Check dams are stronger structures that can handle very different water levels and larger amounts of debris during torrential flow events and floods.</i> </p> </td> <td><div class="thumb tleft"><div class="thumbinner" style="width:302px;"><a href="/wiki/File:Stallikon_-_Aum%C3%BCli,_M%C3%BChle_mit_Nebenbauten_2011-09-23_18-06-58.jpg" class="image"><img alt="Rudimentary trash screen" src="https://upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Stallikon_-_Aum%C3%BCli%2C_M%C3%BChle_mit_Nebenbauten_2011-09-23_18-06-58.jpg/300px-Stallikon_-_Aum%C3%BCli%2C_M%C3%BChle_mit_Nebenbauten_2011-09-23_18-06-58.jpg" decoding="async" width="300" height="450" class="thumbimage" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Stallikon_-_Aum%C3%BCli%2C_M%C3%BChle_mit_Nebenbauten_2011-09-23_18-06-58.jpg/450px-Stallikon_-_Aum%C3%BCli%2C_M%C3%BChle_mit_Nebenbauten_2011-09-23_18-06-58.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Stallikon_-_Aum%C3%BCli%2C_M%C3%BChle_mit_Nebenbauten_2011-09-23_18-06-58.jpg/600px-Stallikon_-_Aum%C3%BCli%2C_M%C3%BChle_mit_Nebenbauten_2011-09-23_18-06-58.jpg 2x" /></a> <div class="thumbcaption"><div class="magnify"><a href="/wiki/File:Stallikon_-_Aum%C3%BCli,_M%C3%BChle_mit_Nebenbauten_2011-09-23_18-06-58.jpg" class="internal" title="Enlarge"></a></div>Rudimentary trash screen</div></div></div> </td> <td><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:waterway" title="Key:waterway">waterway</a></bdi>=<a href="/wiki/Tag:waterway%3Ddebris_screen" title="Tag:waterway=debris screen"><bdi>debris_screen</bdi></a></tt> </td></tr></tbody></table> <p><br /> </p> <h2><span class="mw-headline" id="Rendering">Rendering</span></h2> <p>Check dams could be rendered similar to weirs and dams. </p> <h2><span id="Features.2FPages_affected"></span><span class="mw-headline" id="Features/Pages_affected">Features/Pages affected</span></h2> <ul><li><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:waterway" title="Key:waterway">waterway</a></bdi>=<a href="/wiki/Tag:waterway%3Dcheck_dam" class="mw-redirect" title="Tag:waterway=check dam"><bdi>check_dam</bdi></a></tt> will be created</li> <li><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:waterway" title="Key:waterway">waterway</a></bdi>=<a href="/wiki/Tag:waterway%3Ddam" title="Tag:waterway=dam"><bdi>dam</bdi></a></tt> and <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:waterway" title="Key:waterway">waterway</a></bdi>=<a href="/wiki/Tag:waterway%3Dweir" title="Tag:waterway=weir"><bdi>weir</bdi></a></tt>, to mention when <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:waterway" title="Key:waterway">waterway</a></bdi>=<a href="/wiki/Tag:waterway%3Dcheck_dam" class="mw-redirect" title="Tag:waterway=check dam"><bdi>check_dam</bdi></a></tt> should be used</li> <li>Examples of debris basins will be aded to <tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap"><a href="/wiki/Key:basin" title="Key:basin">basin</a></bdi>=<a href="/wiki/Tag:basin%3Ddetention" title="Tag:basin=detention"><bdi>detention</bdi></a></tt></li></ul> <h2><span class="mw-headline" id="External_discussions">External discussions</span></h2> <ul><li>Jun 2020 [talk-ch] <a rel="nofollow" class="external text" href="http://lists.openstreetmap.ch/pipermail/talk-ch/2020-June/010610.html">Wildbachverbauungen</a></li> <li>Aug 2013 [forum] <a class="external text" href="https://forum.openstreetmap.org/viewtopic.php?pid=359745">Geschiebesperren und Sperrentreppen</a></li></ul> <h2><span class="mw-headline" id="References">References</span></h2> <p>The proposed tagging follows these classifications of check dams with certain simplifications: </p> <ul><li><a rel="nofollow" class="external text" href="http://www.interpraevent.at/palm-cms/upload_files/Publikationen/Tagungsbeitraege/2006_2_829.pdf">Wehrmann, H., Hübl, J., & Holzinger, G. (2006, September). Classification of dams in torrential watersheds. In Proc., INTERPRAEVENT Conf (pp. 829-838).</a></li> <li><a rel="nofollow" class="external text" href="https://boku.ac.at/fileadmin/data/H03000/H87000/H87100/IAN_Reports/REP0050_Band2.pdf">Hübl, J., Holzinger, G. and Wehrmann, H. (2003) Entwicklung von Grundlagen zur Dimensionierung kronenoffener Bauwerke für die Geschiebebewirtschaftung in Wildbächen: Klassifikation von Wildbachsperren, WLSReport 50 im Auftrag des BMLFUW VC 7a (unpublished), Band 2, p. 1–84.</a></li></ul> <h2><span class="mw-headline" id="Comments">Comments</span></h2> <p>Please comment on the <a href="/wiki/Proposal_talk:Check_dam" title="Proposal talk:Check dam">discussion page</a>. </p>    </div> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://wiki.openstreetmap.org/w/index.php?title=Proposal:Check_dam&oldid=2783255">https://wiki.openstreetmap.org/w/index.php?title=Proposal:Check_dam&oldid=2783255</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Special:Categories" title="Special:Categories">Categories</a>: <ul><li><a href="/wiki/Category:Proposals_with_%22Proposed%22_status" title="Category:Proposals with "Proposed" status">Proposals with "Proposed" status</a></li><li><a href="/wiki/Category:Proposed_features_under_way" title="Category:Proposed features under way">Proposed features under way</a></li><li><a href="/wiki/Category:Proposals_with_%22Proposed%22_status_sorted_by_newest_edit" title="Category:Proposals with "Proposed" status sorted by newest edit">Proposals with "Proposed" status sorted by newest edit</a></li></ul></div></div> </div> </div> <div id="mw-navigation"> <h2>Navigation menu</h2> <div id="mw-head"> <nav id="p-personal" class="vector-menu mw-portlet mw-portlet-personal vector-user-menu-legacy" aria-labelledby="p-personal-label" role="navigation" > <h3 id="p-personal-label" class="vector-menu-heading " > <span class="vector-menu-heading-label">Personal tools</span> </h3> <div class="vector-menu-content"> <ul class="vector-menu-content-list"><li id="pt-uls" class="mw-list-item active"><a class="uls-trigger" href="#"><span>English</span></a></li><li id="pt-createaccount" class="mw-list-item"><a href="/w/index.php?title=Special:CreateAccount&returnto=Proposal%3ACheck+dam" title="You are encouraged to create an account and log in; however, it is not mandatory"><span>Create account</span></a></li><li id="pt-login" class="mw-list-item"><a href="/w/index.php?title=Special:UserLogin&returnto=Proposal%3ACheck+dam" title="You are encouraged to log in; however, it is not mandatory [o]" accesskey="o"><span>Log in</span></a></li></ul> </div> </nav> <div id="left-navigation"> <nav id="p-namespaces" class="vector-menu mw-portlet mw-portlet-namespaces vector-menu-tabs vector-menu-tabs-legacy" aria-labelledby="p-namespaces-label" role="navigation" > <h3 id="p-namespaces-label" class="vector-menu-heading " > <span class="vector-menu-heading-label">Namespaces</span> </h3> <div class="vector-menu-content"> <ul class="vector-menu-content-list"><li id="ca-nstab-proposal" class="selected mw-list-item"><a href="/wiki/Proposal:Check_dam" title="[c]" accesskey="c"><span>Proposal</span></a></li><li id="ca-talk" class="mw-list-item"><a href="/wiki/Proposal_talk:Check_dam" rel="discussion" title="Discussion about the content page [t]" accesskey="t"><span>Discussion</span></a></li></ul> </div> </nav> <nav id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet vector-menu-dropdown" aria-labelledby="p-variants-label" role="navigation" > <input type="checkbox" id="p-variants-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-variants" class="vector-menu-checkbox" aria-labelledby="p-variants-label" /> <label id="p-variants-label" aria-label="Change language variant" class="vector-menu-heading " > <span class="vector-menu-heading-label">English</span> </label> <div class="vector-menu-content"> <ul class="vector-menu-content-list"></ul> </div> </nav> </div> <div id="right-navigation"> <nav id="p-views" class="vector-menu mw-portlet mw-portlet-views vector-menu-tabs vector-menu-tabs-legacy" aria-labelledby="p-views-label" role="navigation" > <h3 id="p-views-label" class="vector-menu-heading " > <span class="vector-menu-heading-label">Views</span> </h3> <div class="vector-menu-content"> <ul class="vector-menu-content-list"><li id="ca-view" class="selected mw-list-item"><a href="/wiki/Proposal:Check_dam"><span>Read</span></a></li><li id="ca-viewsource" class="mw-list-item"><a href="/w/index.php?title=Proposal:Check_dam&action=edit" title="This page is protected.
You can view its source [e]" accesskey="e"><span>View source</span></a></li><li id="ca-history" class="mw-list-item"><a href="/w/index.php?title=Proposal:Check_dam&action=history" title="Past revisions of this page [h]" accesskey="h"><span>View history</span></a></li></ul> </div> </nav> <nav id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-menu-dropdown" aria-labelledby="p-cactions-label" role="navigation" title="More options" > <input type="checkbox" id="p-cactions-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-cactions" class="vector-menu-checkbox" aria-labelledby="p-cactions-label" /> <label id="p-cactions-label" class="vector-menu-heading " > <span class="vector-menu-heading-label">More</span> </label> <div class="vector-menu-content"> <ul class="vector-menu-content-list"></ul> </div> </nav> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <div> <h3 > <label for="searchInput">Search</label> </h3> <form action="/w/index.php" id="searchform" class="vector-search-box-form"> <div id="simpleSearch" class="vector-search-box-inner" data-search-loc="header-navigation"> <input class="vector-search-box-input" type="search" name="search" placeholder="Search OpenStreetMap Wiki" aria-label="Search OpenStreetMap Wiki" autocapitalize="sentences" title="Search OpenStreetMap Wiki [f]" accesskey="f" id="searchInput" > <input type="hidden" name="title" value="Special:Search"> <input id="mw-searchButton" class="searchButton mw-fallbackSearchButton" type="submit" name="fulltext" title="Search the pages for this text" value="Search"> <input id="searchButton" class="searchButton" type="submit" name="go" title="Go to a page with this exact name if it exists" value="Go"> </div> </form> </div> </div> </div> </div> <div id="mw-panel"> <div id="p-logo" role="banner"> <a class="mw-wiki-logo" href="/wiki/Main_Page" title="Visit the main page"></a> </div> <nav id="p-site" class="vector-menu mw-portlet mw-portlet-site vector-menu-portal portal" aria-labelledby="p-site-label" role="navigation" > <h3 id="p-site-label" class="vector-menu-heading " > <span class="vector-menu-heading-label">Site</span> </h3> <div class="vector-menu-content"> <ul class="vector-menu-content-list"><li id="n-mainpage" class="mw-list-item"><a href="/wiki/Main_Page" title="Visit the main page [z]" accesskey="z"><span>Main Page</span></a></li><li id="n-osm-homepage" class="mw-list-item"><a href="https://www.openstreetmap.org/"><span>The map</span></a></li><li id="n-mapfeatures" class="mw-list-item"><a href="/wiki/Map_features"><span>Map Features</span></a></li><li id="n-contributors" class="mw-list-item"><a href="/wiki/Contributors"><span>Contributors</span></a></li><li id="n-help" class="mw-list-item"><a href="/wiki/Get_help" title="The place to find out"><span>Help</span></a></li><li id="n-blogs" class="mw-list-item"><a href="/wiki/OSM_Blogs"><span>Blogs</span></a></li><li id="n-Shop" class="mw-list-item"><a href="/wiki/Merchandise"><span>Shop</span></a></li><li id="n-sitesupport" class="mw-list-item"><a href="/wiki/Donations"><span>Donations</span></a></li><li id="n-talk-wiki" class="mw-list-item"><a href="/wiki/Talk:Wiki"><span>Wiki discussion</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Special:RecentChanges" title="A list of recent changes in the wiki [r]" accesskey="r"><span>Recent changes</span></a></li></ul> </div> </nav> <nav id="p-tb" class="vector-menu mw-portlet mw-portlet-tb vector-menu-portal portal" aria-labelledby="p-tb-label" role="navigation" > <h3 id="p-tb-label" class="vector-menu-heading " > <span class="vector-menu-heading-label">Tools</span> </h3> <div class="vector-menu-content"> <ul class="vector-menu-content-list"><li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Special:WhatLinksHere/Proposal:Check_dam" title="A list of all wiki pages that link here [j]" accesskey="j"><span>What links here</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Special:RecentChangesLinked/Proposal:Check_dam" rel="nofollow" title="Recent changes in pages linked from this page [k]" accesskey="k"><span>Related changes</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Special:SpecialPages" title="A list of all special pages [q]" accesskey="q"><span>Special pages</span></a></li><li id="t-print" class="mw-list-item"><a href="javascript:print();" rel="alternate" title="Printable version of this page [p]" accesskey="p"><span>Printable version</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Proposal:Check_dam&oldid=2783255" title="Permanent link to this revision of this page"><span>Permanent link</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Proposal:Check_dam&action=info" title="More information about this page"><span>Page information</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Special:CiteThisPage&page=Proposal%3ACheck_dam&id=2783255&wpFormIdentifier=titleform" title="Information on how to cite this page"><span>Cite this page</span></a></li></ul> </div> </nav> </div> </div> <footer id="footer" class="mw-footer" role="contentinfo" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 1 December 2024, at 07:43.</li> <li id="footer-info-copyright">Content is available under <a href="/wiki/Wiki_content_license" title="Wiki content license">Creative Commons Attribution-ShareAlike 2.0 license</a> unless otherwise noted.</li> </ul> <ul id="footer-places"> <li id="footer-places-privacy"><a href="https://www.osmfoundation.org/wiki/Privacy_Policy">Privacy policy</a></li> <li id="footer-places-about"><a href="/wiki/About">About OpenStreetMap Wiki</a></li> <li id="footer-places-disclaimer"><a href="/wiki/Disclaimer">Disclaimers</a></li> <li id="footer-places-mobileview"><a href="//wiki.openstreetmap.org/w/index.php?title=Proposal:Check_dam&mobileaction=toggle_view_mobile" class="noprint stopMobileRedirectToggle">Mobile view</a></li> </ul> <ul id="footer-icons" class="noprint"> <li id="footer-copyrightico"><a href="https://creativecommons.org/licenses/by-sa/2.0/"><img src="/cc-wiki.png" alt="Creative Commons Attribution-ShareAlike 2.0 license" width="88" height="31" loading="lazy"/></a></li> <li id="footer-poweredbyico"><a href="https://www.mediawiki.org/"><img src="/w/resources/assets/poweredby_mediawiki_88x31.png" alt="Powered by MediaWiki" srcset="/w/resources/assets/poweredby_mediawiki_132x47.png 1.5x, /w/resources/assets/poweredby_mediawiki_176x62.png 2x" width="88" height="31" loading="lazy"/></a></li> </ul> </footer> <script>(RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgPageParseReport":{"limitreport":{"cputime":"0.791","walltime":"2.323","ppvisitednodes":{"value":3819,"limit":1000000},"postexpandincludesize":{"value":75372,"limit":2097152},"templateargumentsize":{"value":4753,"limit":2097152},"expansiondepth":{"value":23,"limit":100},"expensivefunctioncount":{"value":0,"limit":500},"unstrip-depth":{"value":0,"limit":20},"unstrip-size":{"value":37290,"limit":5000000},"entityaccesscount":{"value":0,"limit":250},"timingprofile":["100.00% 2157.907 1 -total"," 53.27% 1149.615 91 Template:Tag"," 9.05% 195.302 1 Template:Proposal_Page"," 4.19% 90.467 2 Template:Icon"," 4.04% 87.285 2 Template:LangSwitch"," 3.88% 83.732 2 Template:LangSwitch/langcode"," 3.24% 69.854 17 Template:Langcode"," 3.06% 66.009 7 Template:Key"," 3.03% 65.442 2 Template:IconNode"," 2.73% 58.819 2 Template:Taginfo2"]},"scribunto":{"limitreport-timeusage":{"value":"1.090","limit":"15"},"limitreport-virtmemusage":{"value":7684096,"limit":52428800},"limitreport-estmemusage":0},"cachereport":{"timestamp":"20241230164728","ttl":86400,"transientcontent":false}}});mw.config.set({"wgBackendResponseTime":2509});});</script> </body> </html>