Changes

====Operation====

[[Image:Sand dam scoop hole.JPG|thumb|right|150px|Women fetching water from a local aquifer through scoop hole]]

First an appropriate site needs to be selected, depending on whether it is suitable for a sand dam or not. Then the best section of the riverbed is chosen. Then the dam is designed, depending on the conditions and the water needs of the community, and built. It takes a few rainy seasons to let the aquifer fill up. After that an extraction point is constructed such as a scoop hole or well. Then water can be extracted and used for drinking, agriculture, etc. Meanwhile the local community needs to be trained to manage and maintain the dam.