[[Image:Dhone icon.png|right|80px]]
[[Image:Dhone.jpg|thumb|right|200px|Water passing through the dhone to an irrigation canal. Photo: [http://www.cd3wd.com/cd3wd_40/cd3wd/Practact/KnO-100410-human_animal_water_lifters.pdf Practical Action]]]
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The dhone consists of a trough made from a wooden log or iron sheet; closed at one end and open at the other. The trough is mounted on a suspended pivoted lever to produce a see-sawing gutter or dhone which operates at relatively low lifts of up to 1.5 m.
This device uses flap valves and can be operated by a single person shifting the weight back and forth at the fulcrum. <ref> [http://www.nzdl.org/gsdlmod?e=d-00000-00---off-0fnl2.2--00-0----0-10-0---0---0direct-10---4-----sti--0-1l--11-en-50---20-about-dryland--00-0-1-00---4-4---0-0-11-11-0utfZz-8-00-00&cl=search&d=HASH0150ba4e9f73176fac50b5ae.7.10.8>=1 Food from Dryland Gardens - An Ecological, Nutritional, and Social Approach to Small-Scale Household Food Production (CPFE, 1991)].</ref>
===Suitable conditions===
The dhone is used in Bangladesh.<br>
It is also widely used (probably in the region of one million) along the Ganges and Brahmaputra rivers in the Indian sub-continent.
===Construction, operations and maintenance===
[[Image:Dhone drawing.jpg|thumb|right|200px|A variation on the dhone that includes a counterweight. Photo: Intermediate Technology Publications]]
Note also that it has already been observed that with increased lifts, the overall efficiency of water lifting is considerably reduced. This is likely to be due to a greater spillage with increased lift, in addition to impaired ergonomics.
===Costs===
In Bangladesh, the higher initial costs of the dhone is the factor which inhibits its widespread adoption. There continues to be scope for some innovation in this method of lifting water.
===Field experiences===
A single dhone will lift 7.5 litre/sec at a lift of 0.75m (115gall/min at 30 inches), which reduces to about 2 litre/sec (30 gall/min) at 1.5m (or 60inches) head. Therefore the dhone will move more than twice as much water as a swingbasket at low lifts, moreover using the power of only one person rather than two. Many Bangladesh farmers try and use a single stage dhone at an overly high lift, and lose a lot of performance as a result; the optimum lift per stage is approximately 1m (40in). <ref>[http://www.scribd.com/doc/57095012/60/Traditional-Water-Lifting-Devices Water Lifting Devices]. FAO, 1986.</ref>
===Manuals, videos, and links===
* [http://docs.watsan.net/Scanned_PDF_Files/Class_Code_2_Water/230-85HU-1269.pdf Human and Animal-Powered Water Lifting Devices: A state of the art survey].
===References===
<references/>
===Acknowledgements===
* 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.
* W. K. Kennedy and T. A. Rogers. [http://docs.watsan.net/Scanned_PDF_Files/Class_Code_2_Water/230-85HU-1269.pdf Human and Animal-Powered Water Lifting Devices: A state of the art survey]. Intermediate Technology Publications, 1985.