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</a> <ul id="toc-History-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Départements_and_towns_along_the_river" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Départements_and_towns_along_the_river"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Départements and towns along the river</span> </div> </a> <ul id="toc-Départements_and_towns_along_the_river-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Tributaries" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Tributaries"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Tributaries</span> </div> </a> <ul id="toc-Tributaries-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Hydrology" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Hydrology"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Hydrology</span> </div> </a> <button aria-controls="toc-Hydrology-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Hydrology subsection</span> </button> <ul id="toc-Hydrology-sublist" class="vector-toc-list"> <li id="toc-Flow-rate_data_(external_links)" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Flow-rate_data_(external_links)"> <div class="vector-toc-text"> <span class="vector-toc-numb">5.1</span> <span>Flow-rate data (external links)</span> </div> </a> <ul id="toc-Flow-rate_data_(external_links)-sublist" class="vector-toc-list"> <li id="toc-Monthly_flow_rates" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Monthly_flow_rates"> <div class="vector-toc-text"> <span class="vector-toc-numb">5.1.1</span> <span>Monthly flow rates</span> </div> </a> <ul id="toc-Monthly_flow_rates-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Flow_rates_at_Hangest-sur-Somme" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Flow_rates_at_Hangest-sur-Somme"> <div class="vector-toc-text"> <span class="vector-toc-numb">5.1.2</span> <span>Flow rates at Hangest-sur-Somme</span> </div> </a> <ul id="toc-Flow_rates_at_Hangest-sur-Somme-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Flow_rates_at_Péronne" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Flow_rates_at_Péronne"> <div class="vector-toc-text"> <span class="vector-toc-numb">5.1.3</span> <span>Flow rates at Péronne</span> </div> </a> <ul id="toc-Flow_rates_at_Péronne-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> </ul> </li> <li id="toc-Navigation_and_canals" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Navigation_and_canals"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Navigation and canals</span> </div> </a> <ul id="toc-Navigation_and_canals-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>References</span> </div> </a> <button aria-controls="toc-References-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle References subsection</span> </button> <ul id="toc-References-sublist" class="vector-toc-list"> <li id="toc-Citations" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Citations"> <div class="vector-toc-text"> <span class="vector-toc-numb">7.1</span> <span>Citations</span> </div> </a> <ul id="toc-Citations-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Sources" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Sources"> <div class="vector-toc-text"> <span class="vector-toc-numb">7.2</span> <span>Sources</span> </div> </a> <ul id="toc-Sources-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Somme (river)</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 55 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-55" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">55 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-als mw-list-item"><a href="https://als.wikipedia.org/wiki/Somme" title="Somme – Alemannic" lang="gsw" hreflang="gsw" data-title="Somme" data-language-autonym="Alemannisch" data-language-local-name="Alemannic" class="interlanguage-link-target"><span>Alemannisch</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%86%D9%87%D8%B1_%D8%A7%D9%84%D8%B3%D9%88%D9%85" title="نهر السوم – Arabic" lang="ar" hreflang="ar" data-title="نهر السوم" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Somma_%C3%A7ay%C4%B1" title="Somma çayı – Azerbaijani" lang="az" hreflang="az" data-title="Somma çayı" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%A1%D0%BE%D0%BC%D0%B0_(%D1%80%D0%B0%D0%BA%D0%B0)" title="Сома (рака) – Belarusian" lang="be" hreflang="be" data-title="Сома (рака)" data-language-autonym="Беларуская" data-language-local-name="Belarusian" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%A1%D0%BE%D0%BC%D0%B0_(%D1%80%D0%B0%D0%BA%D0%B0)" title="Сома (рака) – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Сома (рака)" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target"><span>Беларуская (тарашкевіца)</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%A1%D0%BE%D0%BC%D0%B0" title="Сома – Bulgarian" lang="bg" hreflang="bg" data-title="Сома" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Somme_(st%C3%AAr)" title="Somme (stêr) – Breton" lang="br" hreflang="br" data-title="Somme (stêr)" data-language-autonym="Brezhoneg" data-language-local-name="Breton" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Somme_(riu)" title="Somme (riu) – Catalan" lang="ca" hreflang="ca" data-title="Somme (riu)" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-ceb mw-list-item"><a href="https://ceb.wikipedia.org/wiki/Somme_(suba_sa_Pransiya,_Picardie)" title="Somme (suba sa Pransiya, Picardie) – Cebuano" lang="ceb" hreflang="ceb" data-title="Somme (suba sa Pransiya, Picardie)" data-language-autonym="Cebuano" data-language-local-name="Cebuano" class="interlanguage-link-target"><span>Cebuano</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Somma" title="Somma – Czech" lang="cs" hreflang="cs" data-title="Somma" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Afon_Somme" title="Afon Somme – Welsh" lang="cy" hreflang="cy" data-title="Afon Somme" data-language-autonym="Cymraeg" data-language-local-name="Welsh" class="interlanguage-link-target"><span>Cymraeg</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Somme_(flod)" title="Somme (flod) – Danish" lang="da" hreflang="da" data-title="Somme (flod)" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Somme" title="Somme – German" lang="de" hreflang="de" data-title="Somme" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Somme" title="Somme – Estonian" lang="et" hreflang="et" data-title="Somme" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%A3%CE%BF%CE%BC_(%CF%80%CE%BF%CF%84%CE%B1%CE%BC%CF%8C%CF%82)" title="Σομ (ποταμός) – Greek" lang="el" hreflang="el" data-title="Σομ (ποταμός)" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/R%C3%ADo_Somme" title="Río Somme – Spanish" lang="es" hreflang="es" data-title="Río Somme" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Somme_(rivero)" title="Somme (rivero) – Esperanto" lang="eo" hreflang="eo" data-title="Somme (rivero)" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Somme_ibaia" title="Somme ibaia – Basque" lang="eu" hreflang="eu" data-title="Somme ibaia" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B1%D9%88%D8%AF%D8%AE%D8%A7%D9%86%D9%87_%D8%B3%D9%85" title="رودخانه سم – Persian" lang="fa" hreflang="fa" data-title="رودخانه سم" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Somme_(fleuve)" title="Somme (fleuve) – French" lang="fr" hreflang="fr" data-title="Somme (fleuve)" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/Somme_(rivier)" title="Somme (rivier) – Western Frisian" lang="fy" hreflang="fy" data-title="Somme (rivier)" data-language-autonym="Frysk" data-language-local-name="Western Frisian" class="interlanguage-link-target"><span>Frysk</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Somme_(abhainn)" title="Somme (abhainn) – Irish" lang="ga" hreflang="ga" data-title="Somme (abhainn)" data-language-autonym="Gaeilge" data-language-local-name="Irish" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/R%C3%ADo_Somme" title="Río Somme – Galician" lang="gl" hreflang="gl" data-title="Río Somme" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%86%9C%EA%B0%95" title="솜강 – Korean" lang="ko" hreflang="ko" data-title="솜강" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Somme_(fiume)" title="Somme (fiume) – Italian" lang="it" hreflang="it" data-title="Somme (fiume)" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A1%D7%95%D7%9D_(%D7%A0%D7%94%D7%A8)" title="סום (נהר) – Hebrew" lang="he" hreflang="he" data-title="סום (נהר)" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Samara_(flumen)" title="Samara (flumen) – Latin" lang="la" hreflang="la" data-title="Samara (flumen)" data-language-autonym="Latina" data-language-local-name="Latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Somma" title="Somma – Latvian" lang="lv" hreflang="lv" data-title="Somma" data-language-autonym="Latviešu" data-language-local-name="Latvian" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Somme_(Floss)" title="Somme (Floss) – Luxembourgish" lang="lb" hreflang="lb" data-title="Somme (Floss)" data-language-autonym="Lëtzebuergesch" data-language-local-name="Luxembourgish" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Soma_(up%C4%97)" title="Soma (upė) – Lithuanian" lang="lt" hreflang="lt" data-title="Soma (upė)" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Somme_(La_Manche)" title="Somme (La Manche) – Hungarian" lang="hu" hreflang="hu" data-title="Somme (La Manche)" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%A1%D0%BE%D0%BC%D0%B0_(%D1%80%D0%B5%D0%BA%D0%B0)" title="Сома (река) – Macedonian" lang="mk" hreflang="mk" data-title="Сома (река)" data-language-autonym="Македонски" data-language-local-name="Macedonian" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D9%86%D9%87%D8%B1_%D8%A7%D9%84%D8%B3%D9%88%D9%85" title="نهر السوم – Egyptian Arabic" lang="arz" hreflang="arz" data-title="نهر السوم" data-language-autonym="مصرى" data-language-local-name="Egyptian Arabic" class="interlanguage-link-target"><span>مصرى</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Somme_(rivier)" title="Somme (rivier) – Dutch" lang="nl" hreflang="nl" data-title="Somme (rivier)" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%82%BD%E3%83%B3%E3%83%A0%E5%B7%9D" title="ソンム川 – Japanese" lang="ja" hreflang="ja" data-title="ソンム川" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ce mw-list-item"><a href="https://ce.wikipedia.org/wiki/%D0%A1%D0%BE%D0%BC%D0%BC%D0%B0_(%D1%8D%D1%80%D0%BA)" title="Сомма (эрк) – Chechen" lang="ce" hreflang="ce" data-title="Сомма (эрк)" data-language-autonym="Нохчийн" data-language-local-name="Chechen" class="interlanguage-link-target"><span>Нохчийн</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Somme_(elv)" title="Somme (elv) – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Somme (elv)" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Elva_Somme" title="Elva Somme – Norwegian Nynorsk" lang="nn" hreflang="nn" data-title="Elva Somme" data-language-autonym="Norsk nynorsk" data-language-local-name="Norwegian Nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Somme_(flume)" title="Somme (flume) – Occitan" lang="oc" hreflang="oc" data-title="Somme (flume)" data-language-autonym="Occitan" data-language-local-name="Occitan" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-pcd mw-list-item"><a href="https://pcd.wikipedia.org/wiki/Sonme_(Fleufe)" title="Sonme (Fleufe) – Picard" lang="pcd" hreflang="pcd" data-title="Sonme (Fleufe)" data-language-autonym="Picard" data-language-local-name="Picard" class="interlanguage-link-target"><span>Picard</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Somma_(rzeka)" title="Somma (rzeka) – Polish" lang="pl" hreflang="pl" data-title="Somma (rzeka)" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Rio_Somme" title="Rio Somme – Portuguese" lang="pt" hreflang="pt" data-title="Rio Somme" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/R%C3%A2ul_Somme" title="Râul Somme – Romanian" lang="ro" hreflang="ro" data-title="Râul Somme" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A1%D0%BE%D0%BC%D0%BC%D0%B0_(%D1%80%D0%B5%D0%BA%D0%B0)" title="Сомма (река) – Russian" lang="ru" hreflang="ru" data-title="Сомма (река)" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Somme_River" title="Somme River – Simple English" lang="en-simple" hreflang="en-simple" data-title="Somme River" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Soma" title="Soma – Slovenian" lang="sl" hreflang="sl" data-title="Soma" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A1%D0%BE%D0%BC%D0%B0_(%D0%BF%D1%80%D0%B8%D1%82%D0%BE%D0%BA%D0%B0_%D0%9B%D0%B0%D0%BC%D0%B0%D0%BD%D1%88%D0%B0)" title="Сома (притока Ламанша) – Serbian" lang="sr" hreflang="sr" data-title="Сома (притока Ламанша)" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Somme" title="Somme – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Somme" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Somme_(joki)" title="Somme (joki) – Finnish" lang="fi" hreflang="fi" data-title="Somme (joki)" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Somme" title="Somme – Swedish" lang="sv" hreflang="sv" data-title="Somme" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A1%D0%BE%D0%BC%D0%BC%D0%B0_(%D1%80%D1%96%D1%87%D0%BA%D0%B0)" title="Сомма (річка) – Ukrainian" lang="uk" hreflang="uk" data-title="Сомма (річка)" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/S%C3%B4ng_Somme" title="Sông Somme – Vietnamese" lang="vi" hreflang="vi" data-title="Sông Somme" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-vls mw-list-item"><a href="https://vls.wikipedia.org/wiki/Somme_(riviere)" title="Somme (riviere) – West Flemish" lang="vls" hreflang="vls" data-title="Somme (riviere)" data-language-autonym="West-Vlams" data-language-local-name="West Flemish" class="interlanguage-link-target"><span>West-Vlams</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E7%B4%A2%E5%A7%86%E6%B2%B3" title="索姆河 – Wu" lang="wuu" hreflang="wuu" data-title="索姆河" data-language-autonym="吴语" 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href="https://geohack.toolforge.org/geohack.php?pagename=Somme_(river)&params=50_11_10_N_01_38_35_E_type:river"><span class="geo-default"><span class="geo-dms" title="Maps, aerial photos, and other data for this location"><span class="latitude">50°11′10″N</span> <span class="longitude">01°38′35″E</span></span></span><span class="geo-multi-punct"> / </span><span class="geo-nondefault"><span class="geo-dec" title="Maps, aerial photos, and other data for this location">50.18611°N 1.64306°E</span><span style="display:none"> / <span class="geo">50.18611; 1.64306</span></span></span></a></span></span></div></div> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><p class="mw-empty-elt"> </p> <div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">River in France</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">For other uses, see <a href="/wiki/Somme_(disambiguation)" class="mw-redirect mw-disambig" title="Somme (disambiguation)">Somme (disambiguation)</a>.</div><style data-mw-deduplicate="TemplateStyles:r1251242444">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output 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.mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-Expand_language plainlinks metadata ambox ambox-notice skin-invert-image" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/Translation_to_english_arrow.svg/50px-Translation_to_english_arrow.svg.png" decoding="async" width="50" height="17" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/Translation_to_english_arrow.svg/75px-Translation_to_english_arrow.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/Translation_to_english_arrow.svg/100px-Translation_to_english_arrow.svg.png 2x" data-file-width="60" data-file-height="20" /></span></span></div></td><td class="mbox-text"><div class="mbox-text-span"><style data-mw-deduplicate="TemplateStyles:r1214851843">.mw-parser-output .hidden-begin{box-sizing:border-box;width:100%;padding:5px;border:none;font-size:95%}.mw-parser-output .hidden-title{font-weight:bold;line-height:1.6;text-align:left}.mw-parser-output .hidden-content{text-align:left}@media all and (max-width:500px){.mw-parser-output .hidden-begin{width:auto!important;clear:none!important;float:none!important}}</style><div class="hidden-begin mw-collapsible mw-collapsed" style="font-size:100%; padding: 0px;"><div class="hidden-title skin-nightmode-reset-color" style="text-align:center; padding-right: 3em; font-weight: normal; text-align: left">You can help <b>expand this article with text translated from <a href="https://fr.wikipedia.org/wiki/Somme_(fleuve)" class="extiw" title="fr:Somme (fleuve)">the corresponding article</a> in French</b>. <small>Click [show] for important translation instructions.</small></div><div class="hidden-content mw-collapsible-content" style=""> <ul><li class="mw-empty-elt"></li> <li>Machine translation, like <a rel="nofollow" class="external text" href="https://deepl.com">DeepL</a> or <a rel="nofollow" class="external text" href="https://translate.google.com/">Google Translate</a>, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia.</li> <li>Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article.</li> <li>You <b>must</b> provide <a href="/wiki/Wikipedia:Copying_within_Wikipedia" title="Wikipedia:Copying within Wikipedia">copyright attribution</a> in the <a href="/wiki/Help:Edit_summary" title="Help:Edit summary">edit summary</a> accompanying your translation by providing an <a href="/wiki/Help:Interlanguage_links" title="Help:Interlanguage links">interlanguage link</a> to the source of your translation. A model attribution edit summary is <code>Content in this edit is translated from the existing French Wikipedia article at [[:fr:Somme (fleuve)]]; see its history for attribution.</code></li> <li>You may also add the template <code>{{Translated|fr|Somme (fleuve)}}</code> to the <a href="/wiki/Talk:Somme_(river)" title="Talk:Somme (river)">talk page</a>.</li> <li>For more guidance, see <a href="/wiki/Wikipedia:Translation" title="Wikipedia:Translation">Wikipedia:Translation</a>.</li></ul></div></div></div></td></tr></tbody></table><style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox"><tbody><tr><th colspan="2" class="infobox-above" style="background-color: #CEDEFF;color: #202122;">Somme</th></tr><tr><td colspan="2" class="infobox-image"><span typeof="mw:File"><a href="/wiki/File:Somme.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Somme.JPG/250px-Somme.JPG" decoding="async" width="250" height="333" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Somme.JPG/375px-Somme.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/99/Somme.JPG/500px-Somme.JPG 2x" data-file-width="1200" data-file-height="1600" /></a></span><div class="infobox-caption">The Somme</div></td></tr><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:MapSomme.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/2/2a/MapSomme.jpg" decoding="async" width="184" height="169" class="mw-file-element" data-file-width="184" data-file-height="169" /></a></span><div class="infobox-caption">Course in Northern France</div></td></tr><tr><th colspan="2" class="infobox-header" style="background-color: #CEDEFF;color: #202122;">Location</th></tr><tr style="padding: 0 0.6em 0.2em 0.6em;line-height: 1.2em;"><th scope="row" class="infobox-label">Country</th><td class="infobox-data"><a href="/wiki/France" title="France">France</a></td></tr><tr style="padding: 0 0.6em 0.2em 0.6em;line-height: 1.2em;"><th scope="row" class="infobox-label">Region</th><td class="infobox-data"><a href="/wiki/Picardy" title="Picardy">Picardy</a></td></tr><tr><th colspan="2" class="infobox-header" style="background-color: #CEDEFF;color: #202122;">Physical characteristics</th></tr><tr style="display:none;"><td colspan="2" class="infobox-full-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"></td></tr><tr><th scope="row" class="infobox-label">Source</th><td class="infobox-data"> </td></tr><tr style="padding: 0 0.6em 0.2em 0.6em;line-height: 1.2em;"><th scope="row" class="infobox-label"><span style="font-weight:normal"> • location</span></th><td class="infobox-data"><a href="/wiki/Fonsommes" class="mw-redirect" title="Fonsommes">Fonsommes</a></td></tr><tr style="padding: 0 0.6em 0.2em 0.6em;line-height: 1.2em;"><th scope="row" class="infobox-label"><span style="font-weight:normal"> • coordinates</span></th><td class="infobox-data"><span class="geo-inline"><style data-mw-deduplicate="TemplateStyles:r1156832818">.mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .geo-multi-punct,.mw-parser-output .geo-inline-hidden{display:none}.mw-parser-output .longitude,.mw-parser-output .latitude{white-space:nowrap}</style><span class="plainlinks nourlexpansion"><a class="external text" href="https://geohack.toolforge.org/geohack.php?pagename=Somme_(river)&params=49_54_23_N_03_24_11_E_"><span class="geo-default"><span class="geo-dms" title="Maps, aerial photos, and other data for this location"><span class="latitude">49°54′23″N</span> <span class="longitude">03°24′11″E</span></span></span><span class="geo-multi-punct"> / </span><span class="geo-nondefault"><span class="geo-dec" title="Maps, aerial photos, and other data for this location">49.90639°N 3.40306°E</span><span style="display:none"> / <span class="geo">49.90639; 3.40306</span></span></span></a></span></span></td></tr><tr style="padding: 0 0.6em 0.2em 0.6em;line-height: 1.2em;"><th scope="row" class="infobox-label"><span style="font-weight:normal"> • elevation</span></th><td class="infobox-data">85 m (279 ft)</td></tr><tr style="display:none"><td colspan="2"> </td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/River_mouth" title="River mouth">Mouth</a></th><td class="infobox-data"> </td></tr><tr style="padding: 0 0.6em 0.2em 0.6em;line-height: 1.2em;"><th scope="row" class="infobox-label"><div style="display:inline;font-weight:normal"> • location</div></th><td class="infobox-data"><a href="/wiki/Saint-Valery-sur-Somme" title="Saint-Valery-sur-Somme">Saint-Valery-sur-Somme</a><br /><a href="/wiki/English_Channel" title="English Channel">English Channel</a></td></tr><tr style="padding: 0 0.6em 0.2em 0.6em;line-height: 1.2em;"><th scope="row" class="infobox-label"><div style="display:inline;font-weight:normal"> • coordinates</div></th><td class="infobox-data"><span class="geo-inline"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1156832818"><span class="plainlinks nourlexpansion"><a class="external text" href="https://geohack.toolforge.org/geohack.php?pagename=Somme_(river)&params=50_11_10_N_01_38_35_E_type:river"><span class="geo-default"><span class="geo-dms" title="Maps, aerial photos, and other data for this location"><span class="latitude">50°11′10″N</span> <span class="longitude">01°38′35″E</span></span></span><span class="geo-multi-punct"> / </span><span class="geo-nondefault"><span class="geo-dec" title="Maps, aerial photos, and other data for this location">50.18611°N 1.64306°E</span><span style="display:none"> / <span class="geo">50.18611; 1.64306</span></span></span></a></span></span></td></tr><tr style="padding: 0 0.6em 0.2em 0.6em;line-height: 1.2em;"><th scope="row" class="infobox-label">Length</th><td class="infobox-data">245 km (152 mi)</td></tr><tr><th scope="row" class="infobox-label">Basin size</th><td class="infobox-data">6,550 km<sup>2</sup> (2,530 sq mi)</td></tr><tr style="display:none;"><td colspan="2" class="infobox-full-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"></td></tr><tr style="padding: 0 0.6em 0.2em 0.6em;line-height: 1.2em;"><th scope="row" class="infobox-label">Discharge</th><td class="infobox-data"> </td></tr><tr style="padding: 0 0.6em 0.2em 0.6em;line-height: 1.2em;"><th scope="row" class="infobox-label"><span style="font-weight:normal"> • location</span></th><td class="infobox-data"><a href="/wiki/Abbeville" title="Abbeville">Abbeville</a></td></tr><tr style="padding: 0 0.6em 0.2em 0.6em;line-height: 1.2em;"><th scope="row" class="infobox-label"><span style="font-weight:normal"> • average</span></th><td class="infobox-data">35 m<sup>3</sup>/s (1,200 cu ft/s)</td></tr><tr style="display:none"><td colspan="2"> </td></tr><tr><td colspan="2" class="infobox-below"><a class="mw-kartographer-map notheme mw-kartographer-container center" style="width: 270px; height: 250px;" data-mw-kartographer="mapframe" data-style="osm-intl" data-width="270" data-height="250" data-zoom="8" data-overlays="["_a79f33597da91472bd8d9d9e6fc8d5c0f19d7fd0"]"><img src="https://maps.wikimedia.org/img/osm-intl,8,a,a,270x250.png?lang=en&domain=en.wikipedia.org&title=Somme_%28river%29&revid=1247358981&groups=_a79f33597da91472bd8d9d9e6fc8d5c0f19d7fd0" width="270" height="250" decoding="async" srcset="https://maps.wikimedia.org/img/osm-intl,8,a,a,270x250@2x.png?lang=en&domain=en.wikipedia.org&title=Somme_%28river%29&revid=1247358981&groups=_a79f33597da91472bd8d9d9e6fc8d5c0f19d7fd0 2x" alt="Map" /></a></td></tr></tbody></table> <p>The <b>Somme</b> (<span class="rt-commentedText nowrap"><style data-mw-deduplicate="TemplateStyles:r1177148991">.mw-parser-output .IPA-label-small{font-size:85%}.mw-parser-output .references .IPA-label-small,.mw-parser-output .infobox .IPA-label-small,.mw-parser-output .navbox .IPA-label-small{font-size:100%}</style><span class="IPA-label IPA-label-small"><a href="/wiki/British_English" title="British English">UK</a>: </span><span class="IPA nopopups noexcerpt" lang="en-fonipa"><a href="/wiki/Help:IPA/English" title="Help:IPA/English">/<span style="border-bottom:1px dotted"><span title="'s' in 'sigh'">s</span><span title="/ɒ/: 'o' in 'body'">ɒ</span><span title="'m' in 'my'">m</span></span>/</a></span></span> <a href="/wiki/Help:Pronunciation_respelling_key" title="Help:Pronunciation respelling key"><i title="English pronunciation respelling"><span style="font-size:90%">SOM</span></i></a>, <span class="rt-commentedText nowrap"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1177148991"><span class="IPA-label IPA-label-small"><a href="/wiki/American_English" title="American English">US</a>: </span><span class="IPA nopopups noexcerpt" lang="en-fonipa"><a href="/wiki/Help:IPA/English" title="Help:IPA/English">/<span style="border-bottom:1px dotted"><span title="'s' in 'sigh'">s</span><span title="/ʌ/: 'u' in 'cut'">ʌ</span><span title="'m' in 'my'">m</span></span>/</a></span></span> <a href="/wiki/Help:Pronunciation_respelling_key" title="Help:Pronunciation respelling key"><i title="English pronunciation respelling"><span style="font-size:90%">SUM</span></i></a>,<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1177148991"><span class="IPA-label IPA-label-small">French:</span> <span class="IPA nowrap" lang="fr-Latn-fonipa"><a href="/wiki/Help:IPA/French" title="Help:IPA/French">[sɔm]</a></span> <span class="noprint"><span class="ext-phonos"><span data-nosnippet="" id="ooui-php-1" class="ext-phonos-PhonosButton noexcerpt ext-phonos-PhonosButton-emptylabel oo-ui-widget oo-ui-widget-enabled oo-ui-buttonElement oo-ui-buttonElement-frameless oo-ui-iconElement oo-ui-buttonWidget" data-ooui="{"_":"mw.Phonos.PhonosButton","href":"\/\/upload.wikimedia.org\/wikipedia\/commons\/transcoded\/4\/4d\/LL-Q150_%28fra%29-GrandCelinien-Somme.wav\/LL-Q150_%28fra%29-GrandCelinien-Somme.wav.mp3","rel":["nofollow"],"framed":false,"icon":"volumeUp","data":{"ipa":"","text":"","lang":"en","wikibase":"","file":"LL-Q150 (fra)-GrandCelinien-Somme.wav"},"classes":["ext-phonos-PhonosButton","noexcerpt","ext-phonos-PhonosButton-emptylabel"]}"><a role="button" tabindex="0" href="//upload.wikimedia.org/wikipedia/commons/transcoded/4/4d/LL-Q150_%28fra%29-GrandCelinien-Somme.wav/LL-Q150_%28fra%29-GrandCelinien-Somme.wav.mp3" rel="nofollow" aria-label="Play audio" title="Play audio" class="oo-ui-buttonElement-button"><span class="oo-ui-iconElement-icon oo-ui-icon-volumeUp"></span><span class="oo-ui-labelElement-label"></span><span class="oo-ui-indicatorElement-indicator oo-ui-indicatorElement-noIndicator"></span></a></span><sup class="ext-phonos-attribution noexcerpt navigation-not-searchable"><a href="/wiki/File:LL-Q150_(fra)-GrandCelinien-Somme.wav" title="File:LL-Q150 (fra)-GrandCelinien-Somme.wav">ⓘ</a></sup></span></span>) is a <a href="/wiki/Rivers_in_France" class="mw-redirect" title="Rivers in France">river</a> in <a href="/wiki/Picardy" title="Picardy">Picardy</a>, northern <a href="/wiki/France" title="France">France</a>. </p><p>The river is 245 km (152 mi) in length, from its source in the high ground of the former <a href="/w/index.php?title=For%C3%AAt_d%27Arrouaise&action=edit&redlink=1" class="new" title="Forêt d'Arrouaise (page does not exist)">Arrouaise Forest</a><span class="noprint" style="font-size:85%; font-style: normal;"> [<a href="https://fr.wikipedia.org/wiki/For%C3%AAt_d%27Arrouaise" class="extiw" title="fr:Forêt d'Arrouaise">fr</a>]</span> at <a href="/wiki/Fonsommes" class="mw-redirect" title="Fonsommes">Fonsomme</a> near <a href="/wiki/Saint-Quentin,_Aisne" title="Saint-Quentin, Aisne">Saint-Quentin</a>, to the <a href="/wiki/Bay_of_the_Somme" class="mw-redirect" title="Bay of the Somme">Bay of the Somme</a>, in the <a href="/wiki/English_Channel" title="English Channel">English Channel</a>. It lies in the <a href="/wiki/Geology" title="Geology">geological</a> <a href="/wiki/Syncline" title="Syncline">syncline</a> which also forms the <a href="/wiki/Solent" class="mw-redirect" title="Solent">Solent</a>. This gives it a fairly constant and gentle gradient where several <a href="/wiki/Fluvial_terrace" title="Fluvial terrace">fluvial terraces</a> have been identified.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Name">Name</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Somme_(river)&action=edit&section=1" title="Edit section: Name"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The Somme river was known in ancient times as <i>Samara</i>. It presumably means 'the summery river', that is to say the 'quiet river', stemming from an adjective *<i>sam-aro</i>- ('summery') itself derived from the <a href="/wiki/Proto-Celtic_language" title="Proto-Celtic language">Celtic</a> root *<i>samo</i>- ('summer').<sup id="cite_ref-FOOTNOTEMatasović2009321_4-0" class="reference"><a href="#cite_note-FOOTNOTEMatasović2009321-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Falileyev_5-0" class="reference"><a href="#cite_note-Falileyev-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>The city of <a href="/wiki/Amiens" title="Amiens">Amiens</a> was also known as <i><a href="/wiki/Samarobriva" class="mw-redirect" title="Samarobriva">Samarobriva</a></i> (Gaulish: 'bridge on the Samara'). It is attested by the early 1st century BC as the chief town of the <a href="/wiki/Ambiani" title="Ambiani">Ambiani</a>, an ancient <a href="/wiki/Gauls" title="Gauls">Gallic</a> tribe of the region.<sup id="cite_ref-Falileyev_5-1" class="reference"><a href="#cite_note-Falileyev-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> The modern department of <a href="/wiki/Somme_(department)" title="Somme (department)">Somme</a> was named after this river. </p> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Somme_(river)&action=edit&section=2" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Eduardo_III_cruzando_el_Somme,_por_Benjamin_West.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Eduardo_III_cruzando_el_Somme%2C_por_Benjamin_West.jpg/220px-Eduardo_III_cruzando_el_Somme%2C_por_Benjamin_West.jpg" decoding="async" width="220" height="203" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Eduardo_III_cruzando_el_Somme%2C_por_Benjamin_West.jpg/330px-Eduardo_III_cruzando_el_Somme%2C_por_Benjamin_West.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Eduardo_III_cruzando_el_Somme%2C_por_Benjamin_West.jpg/440px-Eduardo_III_cruzando_el_Somme%2C_por_Benjamin_West.jpg 2x" data-file-width="2000" data-file-height="1842" /></a><figcaption><i><a href="/wiki/Edward_III_Crossing_the_Somme" title="Edward III Crossing the Somme">Edward III Crossing the Somme</a></i>, <a href="/wiki/King_Edward_III" class="mw-redirect" title="King Edward III">King Edward III</a> (at the <a href="/wiki/Battle_of_Blanchetaque" title="Battle of Blanchetaque">Battle of Blanchetaque</a>): painting by <a href="/wiki/Benjamin_West" title="Benjamin West">Benjamin West</a>, 1788</figcaption></figure> <p>The Somme has featured prominently in several military campaigns. In 1066, the invasion fleet of <a href="/wiki/William_the_Conqueror" title="William the Conqueror">William the Conqueror</a> assembled in the Bay of the Somme, at <a href="/wiki/Saint-Valery-sur-Somme" title="Saint-Valery-sur-Somme">Saint-Valery-sur-Somme</a>. The river also featured in the 1346 withdrawal of <a href="/wiki/Edward_III_of_England" title="Edward III of England">Edward III of England</a>'s army, which forded the river at the <a href="/wiki/Battle_of_Blanchetaque" title="Battle of Blanchetaque">Battle of Blanchetaque</a> during the campaign, which culminated in the <a href="/wiki/Battle_of_Cr%C3%A9cy" title="Battle of Crécy">Battle of Crécy</a>. Crossing the river also featured prominently in the campaign which led to the <a href="/wiki/Battle_of_Agincourt" title="Battle of Agincourt">Battle of Agincourt</a> in 1415. </p><p>In 1636, a Spanish army led by <a href="/wiki/Thomas_Francis,_Prince_of_Carignano" title="Thomas Francis, Prince of Carignano">Thomas Francis, Prince of Carignano</a>, <a href="/wiki/Crossed_the_Somme" class="mw-redirect" title="Crossed the Somme">crossed the Somme</a> defeating a French army during the <a href="/wiki/Thirty_Years_War" class="mw-redirect" title="Thirty Years War">Thirty Years War</a> threatening Paris.<sup id="cite_ref-Hanotaux_6-0" class="reference"><a href="#cite_note-Hanotaux-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p><p>Most famously, the <a href="/wiki/Battle_of_the_Somme" title="Battle of the Somme">Battle of the Somme</a>, during <a href="/wiki/World_War_I" title="World War I">World War I</a>, lasted from July to November 1916 and resulted in more than a million casualties. Private A. S. Bullock in his wartime memoir recalled his first sight of it in early April 1918: "... we reached a small place called <a href="/wiki/Hangest-sur-Somme" title="Hangest-sur-Somme">Hengest sur Somme</a>. The train stopped and we descended. There in front of us was a muddy, sluggish and somewhat narrow stream, which has given its name to one of the most awful battles in history – the Somme."<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> The great battles that finally stopped the German advance in the <a href="/wiki/German_spring_offensive" title="German spring offensive">Spring Offensive</a> of 1918 were fought around the valley of the Somme in places like <a href="/wiki/First_Battle_of_the_Somme_(1918)" class="mw-redirect" title="First Battle of the Somme (1918)">Villers Bretonneux</a>, which marked the beginning of the end of the war. </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Sommebron1986.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9b/Sommebron1986.jpg/220px-Sommebron1986.jpg" decoding="async" width="220" height="156" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9b/Sommebron1986.jpg/330px-Sommebron1986.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9b/Sommebron1986.jpg/440px-Sommebron1986.jpg 2x" data-file-width="738" data-file-height="522" /></a><figcaption>The source of the Somme, at <a href="/wiki/Fonsommes" class="mw-redirect" title="Fonsommes">Fonsommes</a></figcaption></figure> <div class="mw-heading mw-heading2"><h2 id="Départements_and_towns_along_the_river"><span id="D.C3.A9partements_and_towns_along_the_river"></span>Départements and towns along the river</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Somme_(river)&action=edit&section=3" title="Edit section: Départements and towns along the river"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Aisne" title="Aisne">Aisne</a>: <a href="/wiki/Saint-Quentin,_Aisne" title="Saint-Quentin, Aisne">Saint-Quentin</a></li> <li><a href="/wiki/Somme_(department)" title="Somme (department)">Somme</a> : <a href="/wiki/Ham,_Somme" title="Ham, Somme">Ham</a>, <a href="/wiki/P%C3%A9ronne,_Somme" title="Péronne, Somme">Péronne</a>, <a href="/wiki/Corbie" title="Corbie">Corbie</a>, <a href="/wiki/Amiens" title="Amiens">Amiens</a>, <a href="/wiki/Abbeville" title="Abbeville">Abbeville</a>, <a href="/wiki/Saint-Valery-sur-Somme" title="Saint-Valery-sur-Somme">Saint-Valery-sur-Somme</a>, <a href="/wiki/Le_Crotoy" title="Le Crotoy">Le Crotoy</a></li></ul> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Mouth_of_the_River_Somme.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Mouth_of_the_River_Somme.jpg/220px-Mouth_of_the_River_Somme.jpg" decoding="async" width="220" height="293" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Mouth_of_the_River_Somme.jpg/330px-Mouth_of_the_River_Somme.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Mouth_of_the_River_Somme.jpg/440px-Mouth_of_the_River_Somme.jpg 2x" data-file-width="1920" data-file-height="2560" /></a><figcaption>The mouth of the Somme in the <a href="/wiki/English_Channel" title="English Channel">English Channel</a></figcaption></figure> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Mouth_of_the_Somme.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a9/Mouth_of_the_Somme.JPG/220px-Mouth_of_the_Somme.JPG" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a9/Mouth_of_the_Somme.JPG/330px-Mouth_of_the_Somme.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a9/Mouth_of_the_Somme.JPG/440px-Mouth_of_the_Somme.JPG 2x" data-file-width="1600" data-file-height="1200" /></a><figcaption>The <a href="/wiki/Estuary" title="Estuary">estuary</a> is now much smaller than it once was but still extensive.</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Amiens_StLeuAviron.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/81/Amiens_StLeuAviron.jpg/220px-Amiens_StLeuAviron.jpg" decoding="async" width="220" height="146" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/81/Amiens_StLeuAviron.jpg/330px-Amiens_StLeuAviron.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/81/Amiens_StLeuAviron.jpg/440px-Amiens_StLeuAviron.jpg 2x" data-file-width="3840" data-file-height="2540" /></a><figcaption>The Somme at Amiens</figcaption></figure> <div class="mw-heading mw-heading2"><h2 id="Tributaries">Tributaries</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Somme_(river)&action=edit&section=4" title="Edit section: Tributaries"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The tributaries listed comprise: </p> <table> <tbody><tr valign="top"> <td> <p><b>Left tributaries:</b> </p> <ol><li>the <a href="https://fr.wikipedia.org/wiki/Sommette_(rivi%C3%A8re)" class="extiw" title="fr:Sommette (rivière)">Sommette</a>,</li> <li>the <a href="https://fr.wikipedia.org/wiki/Beine_(rivi%C3%A8re)" class="extiw" title="fr:Beine (rivière)">Beine</a>,</li> <li>the <a href="https://fr.wikipedia.org/wiki/Allemagne_(rivi%C3%A8re)" class="extiw" title="fr:Allemagne (rivière)">Allemagne</a>,</li> <li>the <a href="https://fr.wikipedia.org/wiki/Ingon" class="extiw" title="fr:Ingon">Ingon</a>,</li> <li>the <a href="/wiki/Avre_(Somme)" title="Avre (Somme)">Avre</a> with tributaries <a href="https://fr.wikipedia.org/wiki/Luce_(rivi%C3%A8re)" class="extiw" title="fr:Luce (rivière)">Luce</a> and <a href="/wiki/Noye" title="Noye">Noye</a>,</li> <li>the <a href="/wiki/Selle_(Somme_tributary)" title="Selle (Somme tributary)">Selle</a>,</li> <li>the <a href="https://fr.wikipedia.org/wiki/Saint-Landon" class="extiw" title="fr:Saint-Landon">Saint-Landon</a>,</li> <li>the <a href="https://fr.wikipedia.org/wiki/Airaines_(rivi%C3%A8re)" class="extiw" title="fr:Airaines (rivière)">Airaines</a>,</li> <li>the <a href="https://fr.wikipedia.org/wiki/Trie_(rivi%C3%A8re)" class="extiw" title="fr:Trie (rivière)">Trie</a>,</li> <li>the <a href="https://fr.wikipedia.org/wiki/Amboise_(rivi%C3%A8re)" class="extiw" title="fr:Amboise (rivière)">Amboise</a> and l'Avalasse</li></ol> </td> <td> <p><b>Right tributaries:</b> </p> <ol><li>the <a href="https://fr.wikipedia.org/wiki/Germaine_(rivi%C3%A8re)" class="extiw" title="fr:Germaine (rivière)">Germaine</a>,</li> <li>the <a href="https://fr.wikipedia.org/wiki/Omignon" class="extiw" title="fr:Omignon">Omignon</a>,</li> <li>the <a href="https://fr.wikipedia.org/wiki/Cologne_(rivi%C3%A8re)" class="extiw" title="fr:Cologne (rivière)">Cologne</a>,</li> <li>La <a href="https://fr.wikipedia.org/wiki/Tortille" class="extiw" title="fr:Tortille">Tortille</a>,</li> <li>the <a href="/wiki/Ancre" title="Ancre">Ancre</a>,</li> <li>the <a href="https://fr.wikipedia.org/wiki/Hallue" class="extiw" title="fr:Hallue">Hallue</a>,</li> <li>the <a href="https://fr.wikipedia.org/wiki/Ni%C3%A8vre_(affluent_de_la_Somme)" class="extiw" title="fr:Nièvre (affluent de la Somme)">Nièvre</a>,</li> <li>the <a href="https://fr.wikipedia.org/wiki/Scardon" class="extiw" title="fr:Scardon">Scardon</a>,</li> <li>the <a href="https://fr.wikipedia.org/wiki/Dien" class="extiw" title="fr:Dien">Dien</a></li></ol> </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Hydrology">Hydrology</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Somme_(river)&action=edit&section=5" title="Edit section: Hydrology"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The river is characterized by a very gentle gradient and a steady flow. The valley is more or less steep-sided but its bottom is flat with <a href="/wiki/Fen" title="Fen">fens</a> and pools. These characteristics of steady flow and flooded valley bottom arise from the river's being fed by the <a href="/wiki/Ground_water" class="mw-redirect" title="Ground water">ground water</a> in the <a href="/wiki/Chalk" title="Chalk">chalk</a> basin in which it lies. At earlier, colder times, from the <a href="/wiki/G%C3%BCnz_glaciation" class="mw-redirect" title="Günz glaciation">Günz</a> to the <a href="/wiki/W%C3%BCrm_glaciation" title="Würm glaciation">Würm</a> (Beestonian or Nebraskan to Devensian or Wisconsinian) the river has cut down into the <a href="/wiki/Cretaceous" title="Cretaceous">Cretaceous</a> geology to a level below the modern <a href="/wiki/Water_table" title="Water table">water table</a>. The valley bottom has now therefore, filled with water which, in turn, has filled with <a href="/wiki/Fen" title="Fen">fen</a>. <a href="https://nl.wikipedia.org/wiki/Afbeelding:Sommebron1986.jpg" class="extiw" title="nl:Afbeelding:Sommebron1986.jpg">This picture</a>, of the source of the Somme in 1986, shows it when the water table had fallen below the surface of the chalk in which the <a href="/wiki/Aquifer" title="Aquifer">aquifer</a> lies. Here, the flow of water had been <a href="/wiki/Sufficient" class="mw-redirect" title="Sufficient">sufficient</a> to keep fen from forming. </p><p><a rel="nofollow" class="external text" href="https://maps.google.com/maps?t=k&ll=49.914093,2.609253&spn=1.207956,2.526855&t=k">This satellite photograph</a> shows the fenny valley crossing the chalk to the sea on the left. The sinuous length at the centre of the picture lies downstream from <a href="/wiki/P%C3%A9ronne,_Somme" title="Péronne, Somme">Péronne</a>. </p><p>One of the fens, the <i>Marais de l'Île</i> is a nature reserve in the town of St.Quentin. The traditional market gardens of <a href="/wiki/Amiens" title="Amiens">Amiens</a>, the <i>Hortillonages</i> are on this sort of land but drained. Once exploited for <a href="/wiki/Peat_cutting" class="mw-redirect" title="Peat cutting">peat cutting</a>, the fen is now used for fishing and shooting </p><p>In 2001, the Somme valley was affected by particularly high floods, which were in large part due to a rise in the <a href="/wiki/Water_table" title="Water table">water table</a> of the surrounding land. </p> <div class="mw-heading mw-heading3"><h3 id="Flow-rate_data_(external_links)"><span id="Flow-rate_data_.28external_links.29"></span>Flow-rate data (external links)</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Somme_(river)&action=edit&section=6" title="Edit section: Flow-rate data (external links)"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading4"><h4 id="Monthly_flow_rates">Monthly flow rates</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Somme_(river)&action=edit&section=7" title="Edit section: Monthly flow rates"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Catchment area 5,560 km<sup>2</sup> (2,150 sq mi). </p> <ul><li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20050527014819/http://hydro.rnde.tm.fr/Traitement/Synthese.php?StaCode=E6470910">at Abbeville</a>.</li></ul> <div class="mw-heading mw-heading4"><h4 id="Flow_rates_at_Hangest-sur-Somme">Flow rates at Hangest-sur-Somme</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Somme_(river)&action=edit&section=8" title="Edit section: Flow rates at Hangest-sur-Somme"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Daily flow rates compared with mean rates for the time of year at Hangest-sur-Somme (m³/s). Catchment area 4,835 km<sup>2</sup> (1,867 sq mi). </p> <ul><li>for the year -</li></ul> <p><a rel="nofollow" class="external text" href="https://web.archive.org/web/20060511083551/http://hydro.rnde.tm.fr/Traitement/Entre2Gene.php?StaCode=E6440910&Annee=1993">1993</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20060511225634/http://hydro.rnde.tm.fr/Traitement/Entre2Gene.php?StaCode=E6440910&Annee=1995">1995</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20060511160626/http://hydro.rnde.tm.fr/Traitement/Entre2Gene.php?StaCode=E6440910&Annee=1997">1997</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20060512180452/http://hydro.rnde.tm.fr/Traitement/Entre2Gene.php?StaCode=E6440910&Annee=1998">1998</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20060511120029/http://hydro.rnde.tm.fr/Traitement/Entre2Gene.php?StaCode=E6440910&Annee=1999">1999</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20060511083617/http://hydro.rnde.tm.fr/Traitement/Entre2Gene.php?StaCode=E6440910&Annee=2001">2001</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20060511160638/http://hydro.rnde.tm.fr/Traitement/Entre2Gene.php?StaCode=E6440910&Annee=2003">2003</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20060511120146/http://hydro.rnde.tm.fr/Traitement/Entre2Gene.php?StaCode=E6440910&Annee=2005">2005</a>. </p> <div class="mw-heading mw-heading4"><h4 id="Flow_rates_at_Péronne"><span id="Flow_rates_at_P.C3.A9ronne"></span>Flow rates at Péronne</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Somme_(river)&action=edit&section=9" title="Edit section: Flow rates at Péronne"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Mean flow rates monthly and daily at Péronne (m³/s). Catchment area 1,294 km<sup>2</sup> (500 sq mi). </p> <ul><li>for the year -</li></ul> <p><a rel="nofollow" class="external text" href="https://web.archive.org/web/20060511160604/http://hydro.rnde.tm.fr/Traitement/Qjm.php?StaCode=E6351410&Annee=1987">1987</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20060511115936/http://hydro.rnde.tm.fr/Traitement/Qjm.php?StaCode=E6351410&Annee=1989">1989</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20060511160620/http://hydro.rnde.tm.fr/Traitement/Qjm.php?StaCode=E6351410&Annee=1991">1991</a>.<a rel="nofollow" class="external text" href="https://web.archive.org/web/20060512180443/http://hydro.rnde.tm.fr/Traitement/Qjm.php?StaCode=E6351410&Annee=1992">1992</a>.<a rel="nofollow" class="external text" href="https://web.archive.org/web/20060511120059/http://hydro.rnde.tm.fr/Traitement/Qjm.php?StaCode=E6351410&Annee=1993">1993</a>.<br /><a rel="nofollow" class="external text" href="https://web.archive.org/web/20060511115919/http://hydro.rnde.tm.fr/Traitement/Qjm.php?StaCode=E6351410&Annee=1995">1995</a>.<a rel="nofollow" class="external text" href="https://web.archive.org/web/20060511120141/http://hydro.rnde.tm.fr/Traitement/Qjm.php?StaCode=E6351410&Annee=1996">1996</a>.<a rel="nofollow" class="external text" href="https://web.archive.org/web/20060511185230/http://hydro.rnde.tm.fr/Traitement/Qjm.php?StaCode=E6351410&Annee=1997">1997</a>.<a rel="nofollow" class="external text" href="https://web.archive.org/web/20060511191456/http://hydro.rnde.tm.fr/Traitement/Qjm.php?StaCode=E6351410&Annee=1999">1999</a>.<a rel="nofollow" class="external text" href="https://web.archive.org/web/20060512164359/http://hydro.rnde.tm.fr/Traitement/Qjm.php?StaCode=E6351410&Annee=2000">2000</a>.<a rel="nofollow" class="external text" href="https://web.archive.org/web/20060512140439/http://hydro.rnde.tm.fr/Traitement/Qjm.php?StaCode=E6351410&Annee=2001">2001</a>.<a rel="nofollow" class="external text" href="https://web.archive.org/web/20060512230000/http://hydro.rnde.tm.fr/Traitement/Qjm.php?StaCode=E6351410&Annee=2002">2002</a>.<a rel="nofollow" class="external text" href="https://web.archive.org/web/20060511185216/http://hydro.rnde.tm.fr/Traitement/Qjm.php?StaCode=E6351410&Annee=2003">2003</a>.<a rel="nofollow" class="external text" href="https://web.archive.org/web/20060512183812/http://hydro.rnde.tm.fr/Traitement/Qjm.php?StaCode=E6351410&Annee=2004">2004</a>.<a rel="nofollow" class="external text" href="https://web.archive.org/web/20060511182648/http://hydro.rnde.tm.fr/Traitement/Qjm.php?StaCode=E6351410&Annee=2005">2005</a>. </p> <figure class="mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Marquenterre,_France.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Marquenterre%2C_France.JPG/250px-Marquenterre%2C_France.JPG" decoding="async" width="250" height="188" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Marquenterre%2C_France.JPG/375px-Marquenterre%2C_France.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Marquenterre%2C_France.JPG/500px-Marquenterre%2C_France.JPG 2x" data-file-width="1600" data-file-height="1200" /></a><figcaption>The Marquenterre bird sanctuary at the mouth of the river</figcaption></figure> <div class="mw-heading mw-heading2"><h2 id="Navigation_and_canals">Navigation and canals</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Somme_(river)&action=edit&section=10" title="Edit section: Navigation and canals"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The construction of the <i><a href="/wiki/Canal_de_la_Somme" title="Canal de la Somme">Canal de la Somme</a></i> began in 1770 and reached completion in 1843. It is 156 km (97 mi) long, beginning at St.Simon and opening into the Bay of the Somme. From St.Simon to Froissy (near Bray sur Somme, south of Albert), the canal is alongside the river. Thence to the sea, the river is partly river and partly navigation. From <a href="/wiki/Abbeville" title="Abbeville">Abbeville</a>, it is diverted through the <a href="/wiki/Silt" title="Silt">silted</a>, former <a href="/wiki/Estuary" title="Estuary">estuary</a>, to <a href="/wiki/Saint-Valery-sur-Somme" title="Saint-Valery-sur-Somme">Saint-Valery-sur-Somme</a>, where the maritime canal, once called the canal du Duc d'Angoulême enters the English Channel. </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Lakes_along_the_Somme.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Lakes_along_the_Somme.JPG/220px-Lakes_along_the_Somme.JPG" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Lakes_along_the_Somme.JPG/330px-Lakes_along_the_Somme.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Lakes_along_the_Somme.JPG/440px-Lakes_along_the_Somme.JPG 2x" data-file-width="1600" data-file-height="1200" /></a><figcaption>An example of the lakes formed in the fen of the valley bottom. They attract wildfowlers and anglers.</figcaption></figure> <p>The <a href="/wiki/Canal_de_Saint-Quentin" title="Canal de Saint-Quentin">St Quentin Canal</a>, famous for the <a href="/wiki/Battle_of_St._Quentin_Canal" class="mw-redirect" title="Battle of St. Quentin Canal">1918 battle</a>, links the Somme to northern France and <a href="/wiki/Belgium" title="Belgium">Belgium</a> and southward to the <a href="/wiki/Oise_(river)" title="Oise (river)">Oise</a>. The <a href="/wiki/Canal_du_Nord" title="Canal du Nord">Canal du Nord</a> also links the Somme to the Oise, at Noyon, thence to Paris. </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Somme_(river)&action=edit&section=11" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Citations">Citations</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Somme_(river)&action=edit&section=12" title="Edit section: Citations"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFWells2008" class="citation book cs1"><a href="/wiki/John_C._Wells" title="John C. Wells">Wells, John C.</a> (2008). <i>Longman Pronunciation Dictionary</i> (3rd ed.). Longman. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4058-8118-0" title="Special:BookSources/978-1-4058-8118-0"><bdi>978-1-4058-8118-0</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Longman+Pronunciation+Dictionary&rft.edition=3rd&rft.pub=Longman&rft.date=2008&rft.isbn=978-1-4058-8118-0&rft.aulast=Wells&rft.aufirst=John+C.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASomme+%28river%29" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFJones2011" class="citation cs1"><a href="/wiki/Daniel_Jones_(phonetician)" title="Daniel Jones (phonetician)">Jones, Daniel</a> (2011). <a href="/wiki/Peter_Roach_(phonetician)" title="Peter Roach (phonetician)">Roach, Peter</a>; <a href="/wiki/Jane_Setter" title="Jane Setter">Setter, Jane</a>; <a href="/wiki/John_Esling" title="John Esling">Esling, John</a> (eds.). <i><a href="/wiki/English_Pronouncing_Dictionary" title="English Pronouncing Dictionary">Cambridge English Pronouncing Dictionary</a></i> (18th ed.). Cambridge University Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-521-15255-6" title="Special:BookSources/978-0-521-15255-6"><bdi>978-0-521-15255-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Cambridge+English+Pronouncing+Dictionary&rft.edition=18th&rft.pub=Cambridge+University+Press&rft.date=2011&rft.isbn=978-0-521-15255-6&rft.aulast=Jones&rft.aufirst=Daniel&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASomme+%28river%29" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGargani_J.Stab_OCojan_I.n_Brulhet_J.2006" class="citation journal cs1">Gargani J.; Stab O; Cojan I.n Brulhet J. (2006). "Modelling the long-term fluvial erosion of the river Somme during the last million years". <i>Terra Nova</i>. <b>18</b> (2): 118–129. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2006TeNov..18..118G">2006TeNov..18..118G</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1111%2Fj.1365-3121.2006.00671.x">10.1111/j.1365-3121.2006.00671.x</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:130418864">130418864</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Terra+Nova&rft.atitle=Modelling+the+long-term+fluvial+erosion+of+the+river+Somme+during+the+last+million+years.&rft.volume=18&rft.issue=2&rft.pages=118-129&rft.date=2006&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A130418864%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.1111%2Fj.1365-3121.2006.00671.x&rft_id=info%3Abibcode%2F2006TeNov..18..118G&rft.au=Gargani+J.&rft.au=Stab+O&rft.au=Cojan+I.n+Brulhet+J.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASomme+%28river%29" class="Z3988"></span></span> </li> <li id="cite_note-FOOTNOTEMatasović2009321-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTEMatasović2009321_4-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFMatasović2009">Matasović 2009</a>, p. 321.</span> </li> <li id="cite_note-Falileyev-5"><span class="mw-cite-backlink">^ <a href="#cite_ref-Falileyev_5-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Falileyev_5-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><a href="#CITEREFFalileyev2010">Falileyev 2010</a>, s.v. <i>Samara</i> and <i>Samarobriva Ambianorum.</i></span> </li> <li id="cite_note-Hanotaux-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-Hanotaux_6-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHanotaux1933–1947" class="citation book cs1 cs1-prop-foreign-lang-source">Hanotaux, Gabriel (1933–1947). <i>Histoire du cardinal de Richelieu</i> (in French). Vol. 5. Paris. 319–21, 327.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Histoire+du+cardinal+de+Richelieu&rft.place=Paris&rft.pages=319-21%2C+327&rft.date=1933%2F1947&rft.aulast=Hanotaux&rft.aufirst=Gabriel&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASomme+%28river%29" class="Z3988"></span><span class="cs1-maint citation-comment"><code class="cs1-code">{{<a href="/wiki/Template:Cite_book" title="Template:Cite book">cite book</a>}}</code>: CS1 maint: location missing publisher (<a href="/wiki/Category:CS1_maint:_location_missing_publisher" title="Category:CS1 maint: location missing publisher">link</a>)</span></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBullock2009" class="citation book cs1">Bullock, Arthur Stanley (2009). <i>Gloucestershire Between the Wars: a memoir</i>. Stroud: The History Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9780752447933" title="Special:BookSources/9780752447933"><bdi>9780752447933</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Gloucestershire+Between+the+Wars%3A+a+memoir&rft.place=Stroud&rft.pub=The+History+Press&rft.date=2009&rft.isbn=9780752447933&rft.aulast=Bullock&rft.aufirst=Arthur+Stanley&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASomme+%28river%29" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading3"><h3 id="Sources">Sources</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Somme_(river)&action=edit&section=13" title="Edit section: Sources"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239549316">.mw-parser-output .refbegin{margin-bottom:0.5em}.mw-parser-output .refbegin-hanging-indents>ul{margin-left:0}.mw-parser-output .refbegin-hanging-indents>ul>li{margin-left:0;padding-left:3.2em;text-indent:-3.2em}.mw-parser-output .refbegin-hanging-indents ul,.mw-parser-output .refbegin-hanging-indents ul li{list-style:none}@media(max-width:720px){.mw-parser-output .refbegin-hanging-indents>ul>li{padding-left:1.6em;text-indent:-1.6em}}.mw-parser-output .refbegin-columns{margin-top:0.3em}.mw-parser-output .refbegin-columns ul{margin-top:0}.mw-parser-output .refbegin-columns li{page-break-inside:avoid;break-inside:avoid-column}@media screen{.mw-parser-output .refbegin{font-size:90%}}</style><div class="refbegin" style=""> <ul><li>Delattre, Ch., Mériaux, E. and Waterlot, M. <i>Guides Géologiques Régionaux: Région du Nord, Flandre Artois Boulonnais Picardie</i> (1973)</li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFalileyev2010" class="citation book cs1">Falileyev, Alexander (2010). <i>Dictionary of Continental Celtic Place-names: A Celtic Companion to the Barrington Atlas of the Greek and Roman World</i>. CMCS. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0955718236" title="Special:BookSources/978-0955718236"><bdi>978-0955718236</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Dictionary+of+Continental+Celtic+Place-names%3A+A+Celtic+Companion+to+the+Barrington+Atlas+of+the+Greek+and+Roman+World&rft.pub=CMCS&rft.date=2010&rft.isbn=978-0955718236&rft.aulast=Falileyev&rft.aufirst=Alexander&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASomme+%28river%29" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMatasović2009" class="citation book cs1"><a href="/wiki/Ranko_Matasovi%C4%87" title="Ranko Matasović">Matasović, Ranko</a> (2009). <i>Etymological Dictionary of Proto-Celtic</i>. Brill. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9789004173361" title="Special:BookSources/9789004173361"><bdi>9789004173361</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Etymological+Dictionary+of+Proto-Celtic&rft.pub=Brill&rft.date=2009&rft.isbn=9789004173361&rft.aulast=Matasovi%C4%87&rft.aufirst=Ranko&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASomme+%28river%29" class="Z3988"></span></li></ul> </div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Somme_(river)&action=edit&section=14" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:var(--background-color-interactive-subtle,#f8f9fa);display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1;min-width:0}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}}</style><style data-mw-deduplicate="TemplateStyles:r1237033735">@media print{body.ns-0 .mw-parser-output .sistersitebox{display:none!important}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}</style><div class="side-box side-box-right plainlinks sistersitebox"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style> <div class="side-box-flex"> <div class="side-box-image"><span class="noviewer" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png" decoding="async" width="30" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/45px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/59px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span></span></div> <div class="side-box-text plainlist">Wikimedia Commons has media related to <span style="font-weight: bold; font-style: italic;"><a href="https://commons.wikimedia.org/wiki/Category:Somme_River" class="extiw" title="commons:Category:Somme River">Somme River</a></span>.</div></div> </div> <ul><li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20070527093643/http://www.images-en-somme.net/en/">Pictures from the Somme</a></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline 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id="Authority_control_databases_frameless&#124;text-top&#124;10px&#124;alt=Edit_this_at_Wikidata&#124;link=https&#58;//www.wikidata.org/wiki/Q37646#identifiers&#124;class=noprint&#124;Edit_this_at_Wikidata" style="font-size:114%;margin:0 4em"><a href="/wiki/Help:Authority_control" title="Help:Authority control">Authority control databases</a> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q37646#identifiers" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, 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States</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://catalogue.bnf.fr/ark:/12148/cb119623054">France</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://data.bnf.fr/ark:/12148/cb119623054">BnF data</a></span></li><li><span class="uid"><span class="rt-commentedText tooltip tooltip-dotted" title="Somme (Francie : řeka)"><a rel="nofollow" class="external text" href="https://aleph.nkp.cz/F/?func=find-c&local_base=aut&ccl_term=ica=ge605345&CON_LNG=ENG">Czech Republic</a></span></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="http://olduli.nli.org.il/F/?func=find-b&local_base=NLX10&find_code=UID&request=987007557330805171">Israel</a></span></li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Geographic</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li><span class="uid"><a rel="nofollow" class="external text" href="https://pleiades.stoa.org/places/109320">Pleiades</a></span></li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li><span class="uid"><a rel="nofollow" class="external text" href="https://www.idref.fr/027622118">IdRef</a></span></li></ul></div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Somme_(river)&oldid=1247358981">https://en.wikipedia.org/w/index.php?title=Somme_(river)&oldid=1247358981</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div 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