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Water Portal / Rainwater Harvesting / Groundwater recharge / Infiltration ponds

No change in size, 19:11, 28 March 2012
→‎Construction, operations and maintenance
* Where aquifer material is fine, clogging may occur rapidly but can be delayed by covering the base and sides of the pond with a 0.5m thick layer of medium sand.
* A rotational system of ponds can allow some to dry while others are used – the ones that dry up can be scraped out to restore infiltration rates, while the drying process is also good for killing algae. In this case, the pond should be shallow enough to allow rapid draining when scraping is needed.
* Constructing ridges on the floor of the basin and controlling water level can allow fine silt to deposit in troughs, allowing most infiltration to take place on the sides of theridges.
* Mechanical ploughing of the floor of the basin can also increase permeability.
Winona
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