Wabe-Shebelle (WS18) Multipurpose Project site is located in the
middle of the Wabe-Shebelle River Basin about 785 km South-East of
Addis Ababa and 255 km South-West of Jijiga town. The access is asphalt
road up to Harar (526 km), all weather /gravel/ road from Harer up to
Fik (173 km), dry weather road from Fik to Hamero (50 km) and the rest
(36 km) is trail. The geographical location of the dam site is 42 0
07'00???????N and 07 0 27'00???????E.
The project has 2238.19 Mm 3 live storage between 580m and 535.41m,
and generates energy in the surface power station. The power system has
a rock-fill dam with a central core clay, 111 m high. The surface
powerhouse has a size of 120mx31mx39.2m. The system has a steel
penstock of 8m diameter and 420m length connected with 3 Francis
turbines with a total installed capacity of 87.75MW. The power from
WS18 project can be evacuated though 1no. Double circuit 230 KV
transmission line connected to Bale Robe substation.
The objective of the study is to recommend the optimum utilization
of the potential of the WS-18 Site for the purpose of irrigation
development and power generation. 14 potential irrigation projects have
been identified in 1973 by BCEOM study of the lower valley. The total
net area of these projects identified by BCEOM is 92,000ha. As the
first priority for the development, Ilo-Uen /net area =15,000ha/ and
Bul-Doho /net area =17,000ha/ will be studied during the current
Multipurpose feasibility study.