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Water Portal / Rainwater Harvesting / Groundwater recharge / Infiltration ponds

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==Suitable conditions==

{{Climate_change

|drought_text=- ''Effects of drought'': Water quality deteriorates; Water levels in wells & boreholes reduce. <br> - ''Underlying causes of effects'': Water levels reduce, which creates excessive algae and water plant growth due to water being too shallow; Less recharge to aquifers. <br> - ''To increase resiliency of WASH system'': coming soon...

 

|flood_text= xxx

}}

 

The aquifer to be recharged needs to be at or near the surface. The base of the pond needs to be permeable. The typical amount of water going into the ground is 30 m/year for fine texture soils (e.g. sandy loams), 100 m/year for loamy soils and 300 m/year for coarse clean sands. A field method to determine seepage rates in the bottom of reservoirs has been developed which can be used to assist in design. Ideally infiltration rates should exceed evaporation rates.

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Winona

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