Regional Office based in Nakuru
Rift Valley Catchment Area is located in the central-western part of the country and covers an area of 130,452 km2, corresponding to 22.7% of the country’s area.
It has a long and narrow shape with a length of about 800 km in the north-south direction, and about 100 km to 300 km wide in the east-west direction. It borders South Sudan and Ethiopia in the North, Tanzania in the south and Uganda to the West. It also borders Ewaso Ng’iro North, Tana, and Athi catchment areas in the eastern side, and Lake Victoria South and North catchment areas in the western side.
There are seven major lakes in the catchment, namely, Lakes Turkana, Baringo, Bogoria, Nakuru, Elementaita, Naivasha, and Magadi. The main rivers are the Turkwel, Molo, Perkerra, Malewa, Kerio, and Ewaso Ng’iro South rivers. Most of the rivers in the catchment are seasonal. Lake Turkana is the largest saline lake in East Africa and the largest desert lake in the world.
Available Water Resources and Water Demand
Available water resources
The renewable water resource was estimated as 3.6 BCM/year in 2010. The per capita renewable water resources was estimated as 737 m3/year/capita (NWMP 2030). This is variable figure and should be determined for the date in question.
Table 3-2 gives the estimated available water resources in the catchment for the years 2010 and 2030.
|Percentage of 2010 values||124%||100%||123%|
Source: NWMP 2030
The sustainable yield of groundwater was adopted as 10% of the groundwater recharge in the catchment area.
Water Demands by Subsector
Water Demands (MCM/year)
Source: NWMP, 2030