Scope of Works

A = Primary Significance B = Secondary Significance

C = Tertiary Significance

Project Details

Client: Period of Assignment: Municipal Council of Eldoret 1992

Financed by: KfW of Germany Man-months: 30

Firm’s Responsibility:

Detailed Environmental Impact Assessment of the social, economic and physical effects of Moiben Dam project implementation on the flora, fauna and human population of the area. Study existing reservoirs within the environs, plan the human resettlement and compute compensation to landowners. Study health aspects due to the reservoir impoundment, adequacy of downstream compensation water and effect of construction works on the environment. Examine the effects on the reservoir due to erosion, sedimentation and pollution resulting from land use practices in the catchment area. Propose mitigation measures for all the adverse environmental impacts. Guidelines followed are those of the World Bank, African Development Bank and KfW.

Project Background:

Eldoret Municipality is the fifth largest town in Kenya and its population is currently over 200,000. It is a major commercial, agricultural and industrial centre with a forecasted high growth rate.

Moiben Dam has been developed as a new source of water to augment supply to Eldoret town.

The dam site is located on Moiben River which is a tributary of the Nzoia River that discharges into Lake Victoria. The catchment is situated within a densely forested area with some human settlements and agricultural activity. The construction of Phase II works was completed in March 1996, while the Moiben Dam was completed in February 1998.

The salient features of Moiben dam are:

	35m high Earthfill Dam + ancillary structures.
	Catchment Area, 188km^2.
	Reservoir Storage, 6.2 x 10⁶m³
	Reservoir Yield, (98%) 28,300m³/day
	Impoundment Area, (HWL) 78Ha
	Length of Lake, 2.1km
	Volume of dam, 182,500m^3.
	Max. Spillway Flood, (1 in 1000 years) 714m³/s

Scope of Works

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