Editing Hydraulics (section)

=== Sri Lanka ===
[[File:Sigiriya moat and garden2.jpg|thumb|right|250px|Moat and gardens at [[Sigiriya]]]]

In ancient Sri Lanka, hydraulics were widely used in the ancient kingdoms of [[Anuradhapura]] and [[Polonnaruwa]].<ref>{{cite web |url=http://www.marines.mil/news/publications/Documents/Sri%20Lanka%20Study_1.pdf |title=SriLanka-A Country study |year=1990 |publisher=USA Government, Department of Army|access-date=9 November 2011|archive-url=https://web.archive.org/web/20120905131619/http://www.marines.mil/news/publications/Documents/Sri%20Lanka%20Study_1.pdf|archive-date=5 September 2012}}</ref> The discovery of the principle of the valve tower, or valve pit, (Bisokotuwa in Sinhalese) for regulating the escape of water is credited to ingenuity more than 2,000 years ago.<ref>{{cite web|url=http://asia.isp.msu.edu/wbwoa/south_asia/sri_lanka/history.htm|title=SriLanka – History|publisher=Asian Studies Center, Michigan State University|access-date=9 November 2011|url-status=dead|archive-url=https://web.archive.org/web/20111228234152/http://asia.isp.msu.edu/wbwoa/south_asia/sri_lanka/history.htm|archive-date=28 December 2011}}</ref> By the first century AD, several large-scale irrigation works had been completed.<ref>{{cite web|url=http://www.shsu.edu/~his_ncp/SriLanka.html|title=Traditional SriLanka or Ceylon|publisher=Sam Houston State University|access-date=9 November 2011|url-status=dead|archive-url=https://web.archive.org/web/20110927020022/http://www.shsu.edu/~his_ncp/SriLanka.html|archive-date=27 September 2011}}</ref> Macro- and micro-hydraulics to provide for domestic horticultural and agricultural needs, surface drainage and erosion control, ornamental and recreational water courses and retaining structures and also cooling systems were in place in [[Sigiriya]], Sri Lanka. The coral on the massive rock at the site includes [[cistern]]s for collecting water.  Large ancient reservoirs of Sri Lanka are Kalawewa (King Dhatusena), Parakrama Samudra (King Parakrama Bahu), Tisa Wewa (King Dutugamunu), Minneriya (King Mahasen)