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Water Portal / Rainwater Harvesting / Groundwater recharge / Sand dam

1 byte added, 21:59, 30 March 2012

→‎Construction, operations and maintenance

After the dam is built, an outlet for water extraction must be constructed for drinking, agriculture, etc.. Hand dug scoop holes are the simplest possibility, however the water can easily be contaminated. Covered wells, with hand or rope pumps protect the water much better. It is also possible to construct an outlet pipe with a tap. In certain designs for sand dams, a pipe is shown that takes water by gravity through the dam wall. These are said to not work well due to either a blocked intake, a broken tap on outlet side and the possibility of weakening the dam wall. <br>

In order to insure success at all stages of construction, operations and maintenance, the local community needs to be trained to manage and maintain the dam.

[[Image:Sand dam scoop hole.JPG|thumb|right|200px|Women fetching water from a local aquifer through scoop hole]]

Winona

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