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{{Language-box|english_link=Ground Catchment | french_link=Le captage de surface |spanish_link=Coming soon|hindi_link=Coming soon|malayalam_link=Coming soon|tamil_link=Coming soon | korean_link=Coming soon | chinese_link=地表集水区 | indonesian_link=Coming soon | japanese_link=Coming soon }}
Open reservoirs can be used to capture rainwater runoff for agriculture or domestic use and for recharging an aquifer. Oftentimes these natural reservoirs are the cheapest option for water storage. However, modifications can be made to increase volumes or gain access to the water. Small dams can be built or linings (to prevent infiltration) can be added. Diversions can also be created to send water to crops or nearby villages. For additional expense, [[underground tank]]s can be built in a runoff basin, which can be made with an increased depth to width ratio (more deep than wide), which means less evaporation losses overall.
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|style="background:#efefef;"|<div class="center" style="width:auto; margin-left:auto; margin-right:auto;">[[Natural_rock_catchment_and_Open_water_reservoir|Natural rock <br>catchment and <br>Open water reservoir]]</div>
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===Ground catchment and storage links===* [http://www.nwp.nl/_docs/Smart-solutions-3R.spread.pdf 3R Smart Solutions]* <font size="4" color="black3">Ground catchment and storage links[http://www.bgs.ac.uk/africagroundwateratlas/index.cfm Africa Groundwater Literature Archive]</font>: The Archive is a searchable database of published and unpublished groundwater literature about Africa, including reports, journal articles, conference papers and maps. Many of these documents are freely available to download; for others, a link is provided to the online abstract, or a full bibliographic reference is given where the document is not known to be available online.
* [http://smallreservoirs.org/ Small Reservoirs Project.] Small Reservoirs Project: Planning and evaluating ensembles of small, multipurpose reservoirs for the improvement of smallholder livelihoods and food security.
* [httphttps://wwwsswm.hpscste.gov.ininfo/sites/default/files/rwhreference_attachments/Blue_Drop_Series_02_UN-_Capacity_BuildingHABITAT%202005%20Rainwater%20Harvesting%20and%20Utilisation%20Book%202.pdf Rainwater Harvesting and Utilisation, Blue Drop Series: Book 2: Beneficiaries & Capacity Builders] or ([http://www.washdoc.info/docsearch/title/154206 alternative link)]. UN-HABITAT.
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* CARE Nederland, Desk Study: [[Resilient WASH systems in drought-prone areas]]. October 2010.
