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Subsurface harvesting systems

No change in size, 03:05, 3 October 2013

→‎Construction, operations and maintenance

'''Specific advice''':

[[Image:SubsurfaceDam.jpg|thumb|right|~~300px~~200px|Mechanics of a subsurface dam. Drawing: WHO.]]

The dam can be constructed of concrete, masonry, blockwork, stone-filled gabions with waterproof membranes such as plastic sheet or clay layer, or stabilised soil.

Winona

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