A HYDROLOGICAL STUDY OF RIVER NYANDO CATCHMENT AREA

Synopsis
This report is based on a study of River Nyando catchment area. River Nyando is an important river that makes up the Lake Victoria basin, one of the major basins in Kenya. The study was made using the data available from the relevant institutions. These data included rainfall records, stream flow data and temperature.
River Nyando catchment lies in the Western part of Kenya. The river basin lies in Nyando, Nandi South and Kericho districts. The Nyando River has its origin in the highlands of the Nandi Hills with an altitude of over 1700m above sea level and drains into Lake Victoria at Winam Gulf with an altitude of 1100m. From the highlands, the River flows down V-shaped valleys in the mountainous area with an estimated bed width of 20m and a gradient of 1:45 (National Environmental Management Authority, 2004). At the middle, the width is about 40m and a gradient of 1:60. Further down, the width increases to 50m and gradient flattens to 1:170.

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