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Water Portal / Rainwater Harvesting / Groundwater recharge / Check dams (gully plugs)

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[[Image:check dams (gully plugs) icon.png|right|80px]]

[[Image:check dam india.jpg|thumb|right|200px|Check Dam for Rainwater Conservation. NMDC Diamond Mine, Panna, Madhya Pradesh. Photo: [http://www.retailforsuregreenfieldeco.com/www/photogallery.php Greenfield Eco Solutions Pvt. Ltd.]]]

A '''check dam ''' is a small, temporary or permanent dam constructed across a drainage ditch, gully, swale, or channel to lower the speed of concentrated flows (like an overflow weir) for a certain design range of storm events. They may be more categorized as a type of floodwater rather than a runoff harvesting technique. A check dam can be built from logs of wood, stone, pea gravel-filled sandbags or bricks and cement. They have been used widely in Kenya and India. These dams can also be made as [[Water Portal / Rainwater Harvesting / Groundwater recharge / Leaky dams | leaky dams]]. Dams that have been built in riverbeds with no coarse sand transport ([[Water Portal / Rainwater Harvesting / Groundwater recharge / Sand dam |Sand dam]]s) may end up being used in this way. These structures are relatively cheap and can last about 2-5 years.

===Suitable conditions===

===Field experiences===

In Ethiopia, unclarity over land tenure led to progressive abandonment of cropping in gullies. See: Falkenmark, M.; Fox, P.; Persson, G.; Rockström, J. (2001) [http://www.siwisswm.orginfo/documentssites/Resourcesdefault/Reportsfiles/Report11_Water_Harvesting_for_Upgrading_Rainfed_Agriculture_2001reference_attachments/FALKENMARK%20et%20al%202001%20Water%20Harvesting%20for%20Upgrading%20of%20Rainfed%20Agriculture.pdf Water harvesting for upgrading of rainfed agriculture. Problem analysis and research needs]. Stockholm International Water Institute.

===Manuals, videos, and links===

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