Chianan Irrigation

{{Short description|Irrigation system in Taiwan}}

File:Rinnai control gates, Kanan Irrigation System.jpg

Image:Jianan Dazun Map.svg

Chianan Irrigation ({{cjkv|c=嘉南大圳|j=嘉南大圳|p=Jianán Dàzùn|poj=Ka-lâm Tōa-chùn|r=Kanan Taishū|l=Chianan Great Ditch}}), also known as the Kanan Irrigation System,{{cite book |title=Civil Affairs Handbook: Taiwan (Formosa) Tainan Province |author=Office of the Chief of Naval Operations |year=1944 |place=Washington |oclc=780306161 |pages=8}} was built to support agricultural production in the Chianan Plain of Taiwan. The name "chia-nan" was derived from two place names among its surrounding area called Chiayi and Tainan. Although it includes some other facilities, such as the Wusanto Reservoir, the term "Chianan Canal", in a narrow sense, would only mean the canals of this system.

The main designer of the Chianan Canal is Yoichi Hatta, a civil engineer of the Japanese government. Its main streams pass through today's Tainan, Chiayi and Yunlin, formerly parts of Tainan Prefecture. The architectural work of canal was launched in 1920 and completed in 1930, during Japanese rule. The canal improved the plantable area for rice from 5000 to 150,000 hectares, and made the rice crops in its irrigated area able to be harvested three times annually.{{cite journal |last=Liu |first=Alexandra |date=June 2001 |title=Country Travel, New Style |journal=Taiwan Panorama |url=http://www.sinorama.com.tw/en/show_issue.php?id=200169006gogoe.txt |access-date=2008-07-15 |archive-url=https://web.archive.org/web/20110718162543/http://www.sinorama.com.tw/en/show_issue.php?id=200169006gogoe.txt |archive-date=2011-07-18 |url-status=dead }}

In 2009 it was listed as a potential World Heritage Site.https://twh.boch.gov.tw/taiwan/index.aspx?lang=en_ushttps://www.moc.gov.tw/en/News_Content2.aspx?n=398&s=14057