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Riverbed hand-dug wells

293 bytes added, 00:42, 12 April 2012
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[[Image:RiverbedHandDugWell.jpg|thumb|right|350px| 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.]]
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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