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Riverbed hand-dug wells

2 bytes removed, 00:51, 12 April 2012
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[[Image:RiverbedHandDugWell.jpg|thumb|right|400px| Hand-dug wells situated in riverbeds must be equipped with a well-head to prevent the well shaft being filled with sand during floods such as this hydro-dynamic well-head used in Sudan. It is shaped as a wedge to break the force of floods. © E. Nissen-Petersen, Kenya.]]
[[Image:NewRiverbedWell.jpg|thumb|right|400px| New riverbed wells. The new well's '''hydro dynamic''' design means it won't be washed away or destroyed by fast flowing rivers during the rainy season. These wells provide cleaner, fresher water, and are safer than climbing into unprotected holes. They are time saving too as traditional wells have to be re-dug each dry season.]]
These are shallow wells which draw water from a natural or man-made aquifer specifically within a riverbed. The simplest version of these is a shallow hole dug every season in a riverbed which gets flooded with every flood event. Other versions allow the water to be accessed all year round through offset handpumps.
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