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Finger pond

1,072 bytes added, 21:48, 12 November 2012
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[[Image:Finger_pond_icon.png|right]]
[[Image:Finger ponds.JPG|thumb|right|250px|Finger pond]]
[[Image:finger ponds2.jpg|thumb|right|250px|Nyangera fingerponds, Kenya. Photo: [http://www.unesco-ihe.org/Project-Activities/Project-Portfolio/Finger-Ponds-Enhancing-the-Natural-Productivity-of-Wetlands-and-Floodplains UNESCO-IHE]]]
Finger ponds use innovative techniques to enhance the natural productivity of wetlands and floodplains. The ponds (body of water smaller than a lake) consist of stretched artificial ponds 5 to 12 m long, extending into the wetland like fingers, hence the name. Finger ponds are excavated at the upstream edge of naturally occurring wetlands or floodplains and are lined with PVC plastic to prevent the water running out. They fill up during the flood cycle, and trap fish within them as the flooding recedes.
==Construction, operations and maintenance==
[[Image:finger ponds2pond stages1.jpg|thumb|right|250px|Nyangera A diagrammatic sequence in the construction of fingerponds, Kenya. Photo(a) The land/swamp interface at the height of the dry season when water tables are at their lowest. Drawing: INTERNATIONAL SCIENTIFIC PUBLICATIONS.]][http[Image://wwwfinger pond stages2.jpg|thumb|right|250px|A diagrammatic sequence in the construction of fingerponds. (b) The digging of the ponds and preparation of theagricultural area when water levels are still low. Drawing: INTERNATIONAL SCIENTIFIC PUBLICATIONS.unesco-ihe]][[Image:finger pond stages3.org/Project-Activities/Project-Portfolio/Finger-Ponds-Enhancing-jpg|thumb|right|250px|A diagrammatic sequence in the-Natural-Productivity-construction of-Wetlands-fingerponds. (c) The fingerpond system becomes flooded during the next rains and-Floodplains UNESCO-IHEfish migrate into the floodplain. Drawing: INTERNATIONAL SCIENTIFIC PUBLICATIONS.]][[Image:finger pond stages4.jpg|thumb|right|250px|A diagrammatic sequence in the construction of fingerponds. (d) On retreat of the floodwaters the fish become trapped in the ponds and are cultured whilst the land between is cultivated. Drawing: INTERNATIONAL SCIENTIFIC PUBLICATIONS.]]
*Maintenance consists of cleaning or desilting the ponds by swabbing the pond bottom.
Winona
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