Changes

==Gallery==

==Gallery==

{{:Check dams: Gallery}}

{{:Check dams: Gallery}}

==External references==

==External References==

[http://www.fao.org/docrep/006/ad082e/AD082e02.htm FAO]

[http://www.fao.org/docrep/006/ad082e/AD082e02.htm Food and Agriculture Organization (FAO) Conservation Guide of the United Nations]

[[Category:Calculations]]

[[Category:Calculations]]