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Riverbed hand-dug wells

91 bytes added, 00:18, 6 June 2012

→‎Resilience to changes in the environment

'''To increase resiliency of WASH system''': Increase volume through construction of groundwater dam; Sink wells/pipes deeper; De-water wells during caissoning within the water table; Construct during the latter half of the dry season; Site in riverbeds that are dry for part of the year, where water remains in the riverbed throughout the dry season; Increase flow by use of porous concrete & perforated pointed steel pipes driven horizontally into the aquifer (riverbed wells) and graded gravel (infiltration galleries & jetted wells); Site in a degrading river section where there is no deposition (infiltration galleries); Put graded gravel around pipes to minimize clogging and increase flow.

 

 

More information on managing drought: [[Resilient WASH systems in drought-prone areas]].

==Construction, operations and maintenance==

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