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Subsurface harvesting systems

2 bytes removed, 01:03, 21 April 2012
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{{Climate_change
|heading1=Drought
|text1= - '''Effects of drought''': Can dry up; Water yields low. <br> - '''Underlying causes of effects''': Less recharge of aquifer due to less rainfall; Increasing population & water demand; Size of aquifers – e.g. limited sand volume; Too much silt accumulates behind dam; Wells not sunk deep enough into water table; Incorrect siting causes leaking dams. <br> - '''To increase resiliency of WASH system''': Competent siting & construction; Build sand dam in stages to reduce silt; Soil & water conservation techniques in upper part of catchment; Dig abstraction wells/pipes deeper.}}
* Siting requirements are similar to the [[sand dam]].<br>
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