Editing Polder (section)

== Examples of polders ==
{{More citations needed|section|date=July 2021}}

===Brazil===
Several cities on the [[Paraíba Valley]] region (in the state of [[São Paulo (state)|São Paulo]]) have polders on land claimed from the floodplains around the [[Paraíba do Sul]] river.

===Bangladesh===
[[Bangladesh]] has 139 polders, of which 49 are sea-facing, while the rest are along the numerous [[Distributary|distributaries]] of the Ganges-Brahmaputra-Meghna River delta. These were constructed in the 1960s to protect the coast from tidal flooding and reduce salinity incursion.<ref>[http://www.irinnews.org/report/98292/bangladesh-polders-under-threat "Bangladesh polders under threat"], Irin News</ref> They reduce long-term flooding and waterlogging following [[storm surge]]s from [[tropical cyclone]]s. They are also cultivated for agriculture.<ref>[http://unearthnews.org/2013/07/17/bangladeshi-project-to-enhance-polders-amidst-climate-woes/ "Bangladeshi project to enhance polders amidst climate woes"] {{webarchive|url=https://web.archive.org/web/20140408091108/http://unearthnews.org/2013/07/17/bangladeshi-project-to-enhance-polders-amidst-climate-woes/ |date=2014-04-08 }}, Unearth News</ref>

===Belgium===
[[File:Diksmuide - Polders - IJzer.jpg|thumb|The [[Yser]] river and West Flemish polders near [[Diksmuide]]]]
* De Moeren, near [[Veurne]] in [[West Flanders]]
* Polders along the [[Yser]] river between [[Nieuwpoort, Belgium|Nieuwpoort]] and [[Diksmuide]]
* Polders of Muisbroek and Ettenhoven, in [[Ekeren]] and [[Hoevenen]]
* Polder of Stabroek, in [[Stabroek]]
* Kabeljauwpolder, in [[Zandvliet]]
* Scheldepolders on the left bank of [[Scheldt|the Scheldt]]
* Uitkerkse polders, near Blankenberge in West Flanders
* Prosperpolder, near Doel, Antwerp and Kieldrecht.

===Canada===
* [[Tantramar Marshes]]
* [[Holland Marsh]]
* [[Pitt Polder Ecological Reserve]]
* [[Grand Pré, Nova Scotia]]
* [[Minas Basin]]

=== China ===

* The city of [[Kunshan]] has over 100 polders.<ref>{{Cite web|url=https://watersensitivecities.org.au/wp-content/uploads/2016/12/CRCWSC_TradeMissiontoKunshan_R2.pdf |archive-url=https://web.archive.org/web/20170409122536/https://watersensitivecities.org.au/wp-content/uploads/2016/12/CRCWSC_TradeMissiontoKunshan_R2.pdf |archive-date=2017-04-09 |url-status=live|title=CRCWSC Trade Mission to Kunshan|date=2016-12-01}}</ref>

====History====
The [[Jiangnan]] region, at the [[Yangtze River Delta]], has a long history of constructing polders. Most of these projects were performed between the 10th and 13th centuries.<ref>{{cite book |last1=Liao, Qiyu 繆启愉 |title=Taihu Tangpu Weitian Shi Yanjiu 太湖塘浦圩田史研究 [The research of the dikes and polders of Lake Tai] |date=1985 |publisher=Nongye Chubanshe |location=Beijing}}</ref> The Chinese government also assisted local communities in constructing dikes for swampland water drainage.<ref>{{cite journal |last1=Xie, Shi 谢湜 |title="11 Shiji Taihu Diqu Nongtian Shuili Geju de Xingcheng" 11 世纪太湖地区农田水利格局的形成 [The formation of water management system in the farmland of the Lake Tai region in the eleventh century] |journal=Journal of Sun Yat-sen University |date=2010 |volume=50 |issue=5 |pages=94–106}}</ref> The Lijia (里甲) self-monitoring system  of 110 households under a ''lizhang'' (里长) headman was used for the purposes of service administration and tax collection in the polder, with a ''liangzhang'' (粮长, grain chief) responsible for maintaining the water system and a ''tangzhang'' (塘长, dike chief) for polder maintenance.<ref>{{cite book |last1=Hamashima, Atsutoshi 滨岛敦俊 |title=Mindai Kōnan nōson shakai no kenkyū 明代江南農村社会の研究 [Rural Society in Jiangnan during the Ming Dynasty |date=1982 |publisher=Tokyo University Press |location=Tokyo |pages=9–65}}</ref>

===Denmark===
* Filsø
* [[Kolindsund]]
* [[Lammefjorden]]

===Finland===
* [[Söderfjärden]]
* [[Munsmo]]
* Two polders ({{convert|3|km2|disp=or|spell=in|}} in total) near [[Vassor]] in [[Korsholm]]

===France===
* [[Marais Poitevin]]
* [[Les Moëres]], adjacent to the Flemish polder ''De Moeren'' in Belgium.
* Polders de Couesnon near [[Mont-Saint-Michel|Mont-Saint Michel]] in Normandy<ref>{{Cite web |title=les polders |url=https://littoral-normand.n2000.fr/sites/littoral-normand.n2000.fr/files/documents/page/les_polders.pdf |access-date=2023-03-25 |website=littoral-normand.n2000.fr}}</ref>

===Germany===
{{main|Koog}}
[[File:Seehundstation Schleuse.JPG|thumb|[[Friedrichskoog]] is a polder in Schleswig-Holstein]]
[[File:Luftaufnahmen Nordseekueste 2012-05-by-RaBoe-355.jpg|thumb|[[Wesselburenerkoog]]]]
In Germany, land reclaimed by diking is called a ''koog''. The German ''Deichgraf'' system was similar to the Dutch and is widely known from [[Theodor Storm]]'s novella ''[[The Rider on the White Horse]]''.

* Altes Land near Hamburg
* [[Blockland, Bremen|Blockland]] and Hollerland near Bremen
* [[Nordstrand, Germany]]
* Bormerkoog and Meggerkoog near [[Friedrichstadt]]
* 36 ''koogs'' in the district of [[Nordfriesland]]
* 12 ''koogs'' in the district of [[Dithmarschen]]

In southern Germany, the term ''polder'' is used for [[retention basin]]s recreated by opening dikes during river [[floodplain restoration]], a meaning somewhat opposite to that in coastal context.

===Guyana===
* Black Bush Polder, Corentyne, Berbice.

===India===
* [[Kuttanad]] Region, [[Kerala]]<ref name="Kuttanad">{{Cite journal | title = Rain continues to throw a challenge in Kuttanad | journal = The Hindu  | publisher = The Hindu Group  | year = 2011 | url = http://www.thehindu.com/todays-paper/tp-national/tp-kerala/article1765439.ece?css=print | access-date = 2011-06-10}}</ref><ref name="Kuttanad2">{{Cite journal | last = Thampatti | first = Manorama | title = Rice Bowl in Turmoil: The Kuttanad Wetland Ecosystem | journal = Resonance | publisher = Indian Academy of Sciences | date = March 1999 | url = https://www.scribd.com/doc/17029034/Degrading-wetland-backwater-ecosystem-of-Kuttanad-India | access-date = 2011-06-10 | url-status = dead | archive-url = https://web.archive.org/web/20101216032932/http://www.scribd.com/doc/17029034/Degrading-wetland-backwater-ecosystem-of-Kuttanad-India | archive-date = 2010-12-16 }}</ref>

===Ireland===
* [[Lough Swilly]], [[County Donegal]]. Near [[Inch Island]] and [[Newtowncunningham]].<ref>{{cite web|title=Inch Wildfowl Reserve History|url=http://www.inchandfoyle.com/history|website=Inch and Foyle Wildfowl Project|access-date=5 June 2015|archive-url=https://web.archive.org/web/20150907033355/http://www.inchandfoyle.com/history|archive-date=7 September 2015|url-status=dead|df=dmy-all}}</ref>

===Italy===
* Delta of the river [[Po River|Po]], such as Bonifica Valle del Mezzano

=== Japan ===

* Around the [[Ariake Sea]] in Kyushu, mainly in [[Saga Prefecture|Saga]] but also in [[Fukuoka Prefecture|Fukuoka]] and [[Kumamoto Prefecture|Kumamoto]] Prefectures

===Lithuania===
* [[Rusnė Island]]

===Netherlands===
[[File:Netherlands, Kaag en Braassem, Stingsloot.JPG|thumb|The meandering Stingsloot separates the Vrouw Vennepolder (left) and the Rode Polder (right)]]
[[File:WW17-133 (33128552163).jpg|thumb|Wind farms in the [[Noordoostpolder]]]]
[[File:The Netherlands below sealevel and protected from floods.png|thumb|right|Areas of the Netherlands located below sea level (blue)]]
* [[Achtermeer]], the oldest polder, from 1533
* [[Alblasserwaard]], containing the windmills of [[Kinderdijk]], a [[World Heritage Site]]
* [[Alkmaar]]
* [[Andijk]]
* [[Anna Paulownapolder]]
* [[Beemster]], a World Heritage Site
* [[Bijlmermeer]]
* [[Flevopolder]], the largest [[artificial island]] in the world, last part drained in 1968
* [['s-Gravesloot]]
* [[Haarlemmermeer]], containing [[Schiphol]] airport
* [[Krimpenerwaard]]
* [[Lauwersmeer]]
* [[Mastenbroek]], one of the oldest medieval polders, drained around 1363-1364.<ref>{{cite web | url=https://www.canonvannederland.nl/nl/overijssel/salland/zwartewaterland/-mastenbroekerpolder | title=De Mastenbroekerpolder }}</ref><ref>{{cite web | url=https://www.staatsbosbeheer.nl/uit-in-de-natuur/locaties/polder-mastenbroek | title=Polder Mastenbroek }}</ref>
* [[Noordoostpolder]]
* [[Prins Alexander]]polder
* [[Purmer]]
* [[Schermer]]
* [[Watergraafsmeer]]
* [[Wieringermeer]]
* [[Wieringerwaard]]
* [[Wijdewormer]]
* Zestienhoven, home of the [[Rotterdam The Hague Airport]] ([[Overschie]]), in the city of [[Rotterdam]].
* [[Zuidplaspolder]], along with [[Lammefjord]] in Denmark the lowest point of the European Union

===Poland===
* [[Vistula]] delta near [[Elbląg]] and [[Nowy Dwór Gdański]]
* [[Warta]] delta near [[Kostrzyn nad Odrą]]

===Romania===
* [[Danube Delta]]

===Singapore===
* Parts of [[Pulau Tekong]]

===Slovenia===
* The [[Ankaran|Ankaran/Ancarano]] Polder ({{langx|sl|Ankaranska bonifika}}), [[Semedela]] Polder ({{lang|sl|Semedelska bonifika}}), and Škocjan Polder ({{lang|sl|Škocjanska bonifika}}) in reclaimed land around [[Koper|Koper/Capodistria]].

===South Korea===
* Parts of the coast of [[Ganghwa Island]], adjacent to the river [[Han River (Korea)|Han]] in [[Incheon]]
* Delta of the river [[Nakdong River|Nakdong]] in [[Busan]]
* [[Saemangeum]] in [[North Jeolla Province]]

===Spain===
* Parts of [[Málaga]] were built on reclaimed land

===United Kingdom===
* [[Traeth Mawr]]
* [[Sunk Island]], on the north shore of the [[Humber]] east of [[Kingston upon Hull|Hull]]
*[[Caldicot and Wentloog Levels]] along the [[Severn Estuary]] in South Wales
* Parts of [[The Fens]]
**[[Branston, Lincolnshire|Branston Island]], by the [[River Witham]] outside the conventional area of the fens but connected to them.
* Parts of the coast of [[Essex]]
* Some land along the [[River Plym]] in [[Plymouth]]
* Some land around [[Meathop]] east of [[Grange-over-Sands]], reclaimed as a side-effect of building a [[railway]] [[Embankment (transportation)|embankment]]
* The [[Somerset Levels]] and [[North Somerset Levels]]
* [[Romney Marsh]]
* [[Sealand, Flintshire]]
* [[Humberhead Levels]]

===United States===
* [[New Orleans]]
* [[Sacramento – San Joaquin River Delta]]