Editing Dam (section)

====Large dams====
The [[International Commission on Large Dams]] (ICOLD) defines a "large dam" as "A dam with a height of {{convert|15|m|abbr=on}} or greater from lowest foundation to crest or a dam between {{convert|5|m|abbr=on}} metres and 15 metres impounding more than {{convert|3|e6m3|acre-ft|lk=out}}".<ref>{{cite web |title=Definition of a Large Dam |url=https://www.icold-cigb.org/GB/dams/definition_of_a_large_dam.asp |publisher=International Commission on Large Dams |access-date=23 January 2021}}</ref> "Major dams" are over {{convert|150|m|abbr=on}} in height.<ref>{{cite web|url=http://www.iucn.org/themes/wani/eatlas/html/technotes.html |quote=A large dam is defined by the industry as one higher than 15 meters high and a major dam as higher than 150.5 meters. |work=Watersheds of the World |title=Methodology and Technical Notes |access-date=1 August 2007 |archive-url=https://archive.today/20070704103642/http://www.iucn.org/themes/wani/eatlas/html/technotes.html |archive-date=4 July 2007 |url-status=dead |df=dmy }}</ref> The ''Report of the World Commission on Dams'' also includes in the "large" category, dams which are between {{convert|5|and|15|m|abbr=on}} high with a reservoir capacity of more than {{convert|3|e6m3|acre-ft|lk=out}}.<ref name="urlDams and Development: An Overview">{{cite web|url=http://www.dams.org/report/wcd_overview.htm |title=Dams and Development: An Overview |date=16 November 2000 |quote=Box 1. What is a large dam? |access-date=24 October 2010 |url-status=dead |archive-url=https://web.archive.org/web/20101028045913/http://www.dams.org/report/wcd_overview.htm |archive-date=28 October 2010 }}</ref> [[Hydropower]] dams can be classified as either "high-head" (greater than 30 m in height) or "low-head" (less than 30 m in height).<ref name="Poff Hart 2002">{{Cite journal|last1=Poff|first1=N. Leroy|last2=Hart|first2=David D.|date=2002-08-01|title=How Dams Vary and Why It Matters for the Emerging Science of Dam Removal;... |journal=BioScience|language=en|volume=52|issue=8|pages=659–668|doi=10.1641/0006-3568(2002)052[0659:HDVAWI]2.0.CO;2|issn=0006-3568|doi-access=free}}</ref>

{{as of|2021}}, ICOLD's World Register of Dams contains 58,700 large dam records.<ref name="UNU-2021">{{cite book |last1=Perera |first1=Duminda |display-authors=et al.|title=Ageing Water Storage Infrastructure: An Emerging Global Risk |date=2021 |publisher=United Nations University Institute for Water, Environment and Health |location=Hamilton, Canada |isbn=978-92-808-6105-1 |url=https://inweh.unu.edu/wp-content/uploads/2021/01/Ageing-Water-Storage-Infrastructure-An-Emerging-Global-Risk.pdf |access-date=23 January 2021 |format=Report Series, Issue 11}}</ref>{{RP|6}} The tallest dam in the world is the {{convert|305|m|ft|adj=mid|-high|abbr=on}} [[Jinping-I Dam]] in [[China]].<ref>{{cite web |title=The Jinping-I Double Curvature Arch Dam sets new world record |url=http://en.powerchina.cn/2016-12/28/content_27870606.htm |website=en.powerchina.cn |access-date=16 November 2018 |archive-date=17 November 2018 |archive-url=https://web.archive.org/web/20181117022403/http://en.powerchina.cn/2016-12/28/content_27870606.htm |url-status=dead }}</ref>