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Counterpoise lift

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[[Image:counterpoiseLift_shadoof2.jpg|thumb|right|200px|A shadoof in Eastern Romania. Photo: [http://en.wikipedia.org/wiki/File:Shaduf-romania.JPG Shaduf-romania.]]]

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'''Scoop irrigation'''<br>

The low-lift ''dhone'', or see-sawing gutters from Bangladesh, can deliver about 300 liters/min (80 gal/min) at a 1 m (3.3 ft) lift. This device uses flap valves and can be operated by a single person shifting the weight back and forth at the fulcrum.

===Suitable conditions===

The advantage of a counterpoise lift over handpumps is the replacement parts can be acquired locally. Sometimes mechanical handpump parts are more difficult to obtain. They also tend to need a certain amount of preventive maintenance if premature failure of components or impaired performance is to be avoided.<ref> [http://www.fao.org/docrep/010/ah810e/AH810E08.htm 4. POWER FOR PUMPING], FAO.</ref>

===Costs===

In Chad, the cost of a shaduf assembled at a well site is US$ 40.

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

* Video: [http://youtu.be/bZ9gJAWvHxo Working Shaduf.]

===References===

===Acknowledgements===

* [http://agricoop.nic.in/dacdivision/Machinery1/chap7.pdf Water lifting devices.] Agricoop.nic.in

* [http://www.fastonline.org/CD3WD_40/CD3WD/AGRIC/CPFE01E/EN/B749_7.HTM Food from Dryland Gardens - An Ecological, Nutritional, and Social Approach to Small Scale Household Food Production]. CPFE, 1991.

* [http://publications.iwmi.org/pdf/H015867.pdf Program on Farmer-Managed Irrigation Systems and Support Services]. International Fund for Agricultural Development and the Bundesministerium fur Wirtschaftliche Zusammenarbeit und Entwicklung (BMZ) Government of the Federal Republic of Germany. October 1994. By the International Irrigation Management institute. Colombo, Sri Lanka.

* Jane Olley. [http://www.cd3wd.com/cd3wd_40/cd3wd/Practact/KnO-100410-human_animal_water_lifters.pdf HUMAN & ANIMAL POWERED WATER-LIFTING DEVICES FOR IRRIGATION.] Practical Action. November, 2008.

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