International Conference on Rain Water Cistern Systems
"Rainwater Catchment for Future Generations"
Keelung, Taiwan, R.O.C. - August 1991
9: Alternative Uses of Cistern Water
Using Farm Pond in Southwestern Taiwan
P.W. Yuan, Y.H. & Wan; Y.
Taiwan provincial soil and water conservation Bureau
Farm ponds are primarily designed and constructed for storing rain water and
providing water supply for the township of Tos-cheng, Yu-Ching, and Nan-Hua in
Taiwan county. Te-Liao, and Yen-Tsoinkaohsiung county where water shortage is
a serious problem. In the past 20 years, from 1970 to 1990, a -total f 58 farm
ponds were constructed with a total volume of 2,745,200 Using farm ponds to collect
rainwater is an unique feature in Southwestern Taiwan.
Rivers and streams in Taiwan are short and steep. Water flows swiftly to the
ocean. Although the rainfall is abundant, water supply in Taiwan is limited. The
average annual rainfall on the island is about 2,510 mm with large spatial variability.
Rainwater is a valuable water resource in mudstone are areas with unavailable
groundwater resource and insufficient surface water source Since 1965, the Taiwan
Procincial Soil and Water Conservation Bureau initiated a policy to construct
a lot of farm ponds for storing rain water and supplying water to satisfy people's
domestic needs, agriculture and livestock raising. The cost for a pond construction
is higher than tap water. However, it is necessary to improve people's living
environment, and to upgrade a production. Farm ponds can also control gully erosion
and landslide in mudstone areas.
A lot of effort have been spent in conducting reconnaissance survey, planning
and design of earth embankment and farm ponds using impermeable mudstone materials
So for, no dam failure has been reported. When farm pond is filled with sediments,
the sludge has to be dredged out. The sludge has been used o cultivate crops such
as dates and guava to increase farmer’s income. This technology has been
transferred to local governments to assist in planning and design of more farm
ponds and rainwater catchment systems.
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