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Available in 23 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-23" 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">23 kalbų</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Creixida_(hidroloch%C3%ADa)" title="Creixida (hidrolochía) – aragonesų" lang="an" hreflang="an" data-title="Creixida (hidrolochía)" data-language-autonym="Aragonés" data-language-local-name="aragonesų" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Desboyu" title="Desboyu – asturianų" lang="ast" hreflang="ast" data-title="Desboyu" data-language-autonym="Asturianu" data-language-local-name="asturianų" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-ba mw-list-item"><a href="https://ba.wikipedia.org/wiki/%D0%A2%D0%B0%D1%88%D2%A1%D1%8B%D0%BD" title="Ташҡын – baškirų" lang="ba" hreflang="ba" data-title="Ташҡын" data-language-autonym="Башҡортса" data-language-local-name="baškirų" class="interlanguage-link-target"><span>Башҡортса</span></a></li><li class="interlanguage-link interwiki-bat-smg mw-list-item"><a href="https://bat-smg.wikipedia.org/wiki/Palaida" title="Palaida – žemaičių" lang="sgs" hreflang="sgs" data-title="Palaida" data-language-autonym="Žemaitėška" data-language-local-name="žemaičių" class="interlanguage-link-target"><span>Žemaitėška</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%A0%D0%B0%D0%B7%D0%B2%D0%BE%D0%B4%D0%B4%D0%B7%D0%B5" title="Разводдзе – baltarusių" lang="be" hreflang="be" data-title="Разводдзе" data-language-autonym="Беларуская" data-language-local-name="baltarusių" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%A0%D0%B5%D1%87%D0%BD%D0%BE_%D0%BF%D1%8A%D0%BB%D0%BD%D0%BE%D0%B2%D0%BE%D0%B4%D0%B8%D0%B5" title="Речно пълноводие – bulgarų" lang="bg" hreflang="bg" data-title="Речно пълноводие" data-language-autonym="Български" data-language-local-name="bulgarų" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%95%D0%B9%D3%B3" title="Ейӳ – čiuvašų" lang="cv" hreflang="cv" data-title="Ейӳ" data-language-autonym="Чӑвашла" data-language-local-name="čiuvašų" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-en badge-Q70893996 mw-list-item" title=""><a href="https://en.wikipedia.org/wiki/River_overflow" title="River overflow – anglų" lang="en" hreflang="en" data-title="River overflow" data-language-autonym="English" data-language-local-name="anglų" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Avenida_(hidrolog%C3%ADa)" title="Avenida (hidrología) – ispanų" lang="es" hreflang="es" data-title="Avenida (hidrología)" data-language-autonym="Español" data-language-local-name="ispanų" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Suurvesi" title="Suurvesi – estų" lang="et" hreflang="et" data-title="Suurvesi" data-language-autonym="Eesti" data-language-local-name="estų" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Uraldi" title="Uraldi – baskų" lang="eu" hreflang="eu" data-title="Uraldi" data-language-autonym="Euskara" data-language-local-name="baskų" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Crue" title="Crue – prancūzų" lang="fr" hreflang="fr" data-title="Crue" data-language-autonym="Français" data-language-local-name="prancūzų" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%80%D5%B8%D6%80%D5%A4%D5%A1%D6%81%D5%B8%D6%82%D5%B4" title="Հորդացում – armėnų" lang="hy" hreflang="hy" data-title="Հորդացում" data-language-autonym="Հայերեն" data-language-local-name="armėnų" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Straripamento" title="Straripamento – italų" lang="it" hreflang="it" data-title="Straripamento" data-language-autonym="Italiano" data-language-local-name="italų" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%AC%E1%83%A7%E1%83%90%E1%83%9A%E1%83%93%E1%83%98%E1%83%93%E1%83%9D%E1%83%91%E1%83%90_(%E1%83%AC%E1%83%A7%E1%83%9A%E1%83%98%E1%83%A1_%E1%83%A0%E1%83%94%E1%83%9F%E1%83%98%E1%83%9B%E1%83%98)" title="წყალდიდობა (წყლის რეჟიმი) – gruzinų" lang="ka" hreflang="ka" data-title="წყალდიდობა (წყლის რეჟიმი)" data-language-autonym="ქართული" data-language-local-name="gruzinų" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-mwl mw-list-item"><a href="https://mwl.wikipedia.org/wiki/Anchente" title="Anchente – mirandezų" lang="mwl" hreflang="mwl" data-title="Anchente" data-language-autonym="Mirandés" data-language-local-name="mirandezų" class="interlanguage-link-target"><span>Mirandés</span></a></li><li class="interlanguage-link interwiki-nap mw-list-item"><a href="https://nap.wikipedia.org/wiki/Chi%C3%A9ma" title="Chiéma – neapoliečių" lang="nap" hreflang="nap" data-title="Chiéma" data-language-autonym="Napulitano" data-language-local-name="neapoliečių" class="interlanguage-link-target"><span>Napulitano</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Overstromingsrisico" title="Overstromingsrisico – olandų" lang="nl" hreflang="nl" data-title="Overstromingsrisico" data-language-autonym="Nederlands" data-language-local-name="olandų" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Enchente" title="Enchente – portugalų" lang="pt" hreflang="pt" data-title="Enchente" data-language-autonym="Português" data-language-local-name="portugalų" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9F%D0%BE%D0%BB%D0%BE%D0%B2%D0%BE%D0%B4%D1%8C%D0%B5" title="Половодье – rusų" lang="ru" hreflang="ru" data-title="Половодье" data-language-autonym="Русский" data-language-local-name="rusų" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sah mw-list-item"><a href="https://sah.wikipedia.org/wiki/%D0%A5%D0%B0%D0%BB%D0%B0%D0%B0%D0%BD" title="Халаан – jakutų" lang="sah" hreflang="sah" data-title="Халаан" data-language-autonym="Саха тыла" data-language-local-name="jakutų" class="interlanguage-link-target"><span>Саха тыла</span></a></li><li class="interlanguage-link interwiki-scn 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//upload.wikimedia.org/wikipedia/commons/thumb/7/72/Disambig.svg/40px-Disambig.svg.png 2x" data-file-width="230" data-file-height="183" /></a></span> <i>Kitos reikšmės – <a href="/wiki/Potvynis_(reik%C5%A1m%C4%97s)" class="mw-redirect mw-disambig" title="Potvynis (reikšmės)">Potvynis (reikšmės)</a>.</i></div></dd></dl> <figure typeof="mw:File/Thumb"><a href="/wiki/Vaizdas:Nemuno_potvynis_%C5%A0la%C5%BE%C5%B3_tilto_apylink%C4%97se.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Nemuno_potvynis_%C5%A0la%C5%BE%C5%B3_tilto_apylink%C4%97se.jpg/250px-Nemuno_potvynis_%C5%A0la%C5%BE%C5%B3_tilto_apylink%C4%97se.jpg" decoding="async" width="250" height="188" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Nemuno_potvynis_%C5%A0la%C5%BE%C5%B3_tilto_apylink%C4%97se.jpg/375px-Nemuno_potvynis_%C5%A0la%C5%BE%C5%B3_tilto_apylink%C4%97se.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Nemuno_potvynis_%C5%A0la%C5%BE%C5%B3_tilto_apylink%C4%97se.jpg/500px-Nemuno_potvynis_%C5%A0la%C5%BE%C5%B3_tilto_apylink%C4%97se.jpg 2x" data-file-width="2592" data-file-height="1944" /></a><figcaption>Potvynis Nemuno deltoje ties <a href="/wiki/%C5%A0la%C5%BE%C5%B3_tiltas" title="Šlažų tiltas">Šlažų tiltu</a></figcaption></figure> <p><b>Potvynis</b> – kasmetinis, pastovus <a href="/wiki/Up%C4%97" title="Upė">upės</a> vandens lygio pakilimas. Jo metu vanduo užpildo ne tik <a href="/wiki/Up%C4%97s_vaga" title="Upės vaga">vagą</a>, bet ir užlieja <a href="/wiki/Salpa" title="Salpa">salpą</a>, <a href="/wiki/Lanka" title="Lanka">lankas</a>. Potvynį gali sukelti kasmetinis pavasarinis <a href="/wiki/Sniegas" title="Sniegas">sniego</a> tirpimas, vasarinis kalnų <a href="/wiki/Ledynas" title="Ledynas">ledynų</a> tirpsmas, <a href="/wiki/Lietingasis_laikotarpis" class="mw-redirect" title="Lietingasis laikotarpis">lietingojo laikotarpio</a> sukeltas vandens perteklius. </p><p>Lietuvos upėse vyksta pavasarinis potvynis, kuris įprastai prasideda <a href="/wiki/Kovas" title="Kovas">kovo</a> mėnesį. Potvynio metu vandens lygis upėse kyla 10-16 dienų. Trunka 40-60 dienų. Miškinguose, pelkėtuose upių baseinuose potvynis ilgesnis, bet ne toks stiprus kaip laukais tekančių upių. Potvynių metu vandens lygis upėse pakyla 1,5-6,0 m. Kasmetinio potvynio metu paprastai užliejama <a href="/wiki/Nemuno_delta" title="Nemuno delta">Nemuno delta</a>, didesnių upių slėnių objektai. Reguliarus potvynis gali virsti <a href="/wiki/U%C5%BEtvindymas" class="mw-redirect" title="Užtvindymas">užtvindymu</a> (stichine nelaime) <a href="/w/index.php?title=Ledo_sangr%C5%ABda&action=edit&redlink=1" class="new" title="Ledo sangrūda (puslapis neegzistuoja)">ledo sangrūdoms</a> užkimšus upės vagą<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>. </p><p>Vasariniai potvyniai būdingi iš kalnų ištekančioms upėms (<a href="/wiki/Nilas" title="Nilas">Nilas</a>, <a href="/wiki/Terekas" title="Terekas">Terekas</a>, <a href="/wiki/Rona" title="Rona">Rona</a>) arba arktinės zonos upėms, kur sniego tirpsmas įsibėgėja tik vasarą (<a href="/wiki/Makenzis" title="Makenzis">Makenzis</a>, <a href="/wiki/Jukonas" title="Jukonas">Jukonas</a>, <a href="/wiki/Indigirka" title="Indigirka">Indigirka</a>). Lietingojo laikotarpio sukelti potvyniai būdingi subekvatorinio, musoninio klimato srities upėms (<a href="/wiki/Mekongas" title="Mekongas">Mekongas</a>, <a href="/wiki/Nigeris_(up%C4%97)" title="Nigeris (upė)">Nigeris</a>, <a href="/wiki/Jangdz%C4%97" title="Jangdzė">Jangdzė</a>). </p><p>Potvynis nemaišytinas su <a href="/wiki/Popl%C5%ABdis" title="Poplūdis">poplūdžiu</a> – netikėtu vandens lygio pakilimu upėje. </p> <div class="mw-heading mw-heading2"><h2 id="Šaltiniai"><span id=".C5.A0altiniai"></span>Šaltiniai</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Potvynis_(hidrologija)&veaction=edit&section=1" title="Redaguoti skyrelį: Šaltiniai" class="mw-editsection-visualeditor"><span>redaguoti</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Potvynis_(hidrologija)&action=edit&section=1" title="Edit section's source code: Šaltiniai"><span>redaguoti vikitekstą</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="references-small" style="list-style-type: decimal;"> <ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><i>Potvynis (hidrologija)</i>. <a href="/wiki/Taryb%C5%B3_Lietuvos_enciklopedija" title="Tarybų Lietuvos enciklopedija">Tarybų Lietuvos enciklopedija</a>, T. 3 (Masaitis-Simno). – Vilnius: Vyriausioji enciklopedijų redakcija, 1987. // psl. 420-421</span> </li> </ol> </div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1&useformat=desktop" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Rodomas puslapis "<a dir="ltr" href="https://lt.wikipedia.org/w/index.php?title=Potvynis_(hidrologija)&oldid=6658776">https://lt.wikipedia.org/w/index.php?title=Potvynis_(hidrologija)&oldid=6658776</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Specialus:Kategorijos" title="Specialus:Kategorijos">Kategorija</a>: <ul><li><a href="/wiki/Kategorija:Up%C4%97s" title="Kategorija:Upės">Upės</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> Šis puslapis paskutinį kartą keistas 9 rugpjūčio 2022 12:27.</li> <li id="footer-info-copyright">Tekstas pateikiamas pagal <a rel="nofollow" class="external text" href="//creativecommons.org/licenses/by-sa/4.0/">Creative Commons Attribution/Share-Alike Licenciją</a>; gali būti taikomos papildomos sąlygos. 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