
VOLUME 2, TOPIC 9
PROGRESS AND LESSONS LEARNED FROM UPPER SOLO
(WONOGIRI) CONSERVATION PROJECT TO CONTROL SEDIMENTATION IN THE WONOGIRI
DAM, INDONESIA
R. Sudradjat 1
A soil and water conservation project has been conducted in the Solo Watershed (120 064 ha)
to reduce the suspended load of the six tributaries of the Solo River which flows into the Wonogiri
Dam. Land rehabilitation and soil conservation measures were conducted through vegetative
techniques and physical structures. The result of evaluation after five years of project implementation
(1989-1994) shows the increase of lifetime of the dam from 27 years to 50 years and the increase of
agricultural products, animal populations and farmers' income.
Food products increased by 32.8%, estate plantations by 13.7%, animal husbandry by
65.2%, forestry 22.3% and fisheries 37%. Income of farmer participants of terrace rehabilitation and
social forestry increased by 270% and 280% respectively. Employment opportunities absorbed 370
man-days/a for terrace rehabilitation and 240 man-days/a for social forestry. Animal populations
increased by 200% for cows, 150% for goats and 270% for sheep. Per capita income increased from 4.79%
in 1988/1989 to 10.27% in 1992/1993.
This project is interesting not only for its success in technical and economic aspects, but also
for the concept of the programme which necessitated coordination and cooperation of several institutions.
Keywords: Wonogiri Dam, catchment area, sedimentation, social forestry, farmer
participation.
1 Watershed Management Technology Center, FORDA Jl. A. Yani-Pabelan, PO Box 295 Solo 57102
Indonesia. Facsimile: (62 271) 716709/716959
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