DESIGN OF A RIVER VALLEY EARTH-DAM AT KATHWANA IN THARAKA FOR IRRIGATION PURPOSE.
Documentation : 

Most parts of Kenya experience water and shortages. Dams are can be used to curb the shortages.
Non-uniform distribution and unpredictable rainfall patterns and long dry seasons are a common
ordeal in most ASAL parts of Kenya. The stored water is used irrigation purposes.
The overall objective of this project is to design an on-stream earth dam for supplying water for
irrigation purposes in Tharaka south district. It will be achieved by choosing the appropriate site
using pre-visit and Google earth, determining the specifications and all the related components.
The specific objectives of the design project is to: Determine crop water demand, layout of the
earth dam infrastructure, sizes of different components of the dam, cost-benefit analysis.
After computations the demand could be supplied by the river. The capacity of reservoir was found
to have a hydrologic height of 3.0m above the lowest point of the river. The dam cost is quite low
compared to other types of dam, hence it its long terms benefits are of great importance to the
community.
The water that ponds in the reservoir is a just a fraction of the total flow hence downstream flow
is slightly affected but the environmental flow for ecological life is maintained

AttachmentSize
MUTARII Report FEB 540.pdf2.72 MB