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沙坝
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====取水====
沙坝竣工后,必须建一个取水出口,用于饮水、农业等用途。用手挖勺洞是最简单的方法,但水容易受污染。有盖浅井,无论带不带有[[Handpumps]](手压泵)或[[Rope pump]](拉绳泵),都可以更好地保护水资源。也可以建造带有龙头的出水管来取水。关于沙坝的某些设计中,水管能运用重力输送水资源''经过''坝墙。据称,由于入水口堵塞或出水口龙头损坏,以及可能引起坝墙松动,取水管运作不良。而直接抽水的地方,污染的风险会增加。在这种情况下,应该提倡家庭用水的处理(如,[[Sodis]](太阳能消毒))。<br>
[[Image:Sand dam scoop hole.JPG|thumb|right|200px|运用勺洞法从河床取地下水。肯尼亚基图伊区。来源: [http://www.sswm.info/category/implementation-tools/water-sources/hardware/precipitation-harvesting/sand-dams HOOGMOED (2007).]]]
====维护====
Further, the outlet and upstream riverbed should be cleaned regularly to make sure the dam does not get blocked. Silt, rocks, dead animals, etc. should be removed regularly. This can also help prevent contamination of the water. The quality of the water in the well should be checked, once in a while, by an expert. 而且,出水口和上游河床需要定期清理,确保沙坝不会堵塞。淤泥、石块和动物死尸等需要定期清除。这也能帮助防止水污染。井中的水质需要间或由专家进行检查。