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Water Portal / Rainwater Harvesting / Groundwater recharge / Sand dam

No change in size, 20:45, 30 March 2012

→‎Suitable conditions

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* year- Year-round source of good quality water <br>* environmentally - Environmentally friendly <br>* erosion - Erosion control <br>* silt - Silt management within river basins <br>* added - Added soil moisture infiltration <br>* regeneration - Regeneration of vegetation along riverbanks <br> * - The effects of sand dams on downstream river discharge are generally small (< 10% of runoff). <br>* - Improved water quality compared to surface water dams since sand dams protect the water against evaporation, contamination (by livestock, etc.) and insect & bacteria breeding. <br>* - Additionally the sand deposits can be collected and sold for extra income. <br>* - Long lifespan if maintained correctly.

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* external - External expert knowledge needed <br>* labour - Labour intensive construction <br>* capital - Capital intensive <br>* - The site must fit very specific conditions for the sand dam to be successful <br>

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