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Water Portal / Rainwater Harvesting / Groundwater recharge / Sand dam

48 bytes added, 23:03, 30 March 2012

→‎Suitable conditions

- Although cost per volume is cheap, the actual structure that needs to be made is expensive. <br>

- If dam is built in stages, it can be difficult for the community to show up next season for the next stage of work.<br>

- Must rebuild if the river changes course <br>

- In Kenya, experience shows that up to 80% of dams might not be functioning as they should due to poor design. <br>

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