G1 LAND USE IN KENYAN PART OF THE CATCHMENT AREA 1985 Area [km2] [%] Natural landscape 29,500 62 - Woody vegetation 7,000 15 - Herbaceous vegetation 22,500 47 Agricultural land 15,500 32 - Crop field 11,000 23 - Pasture land and fallow 4,500 9 Residential area and othe 2,700 6 Total 47,700* 100 * 26% of the whole catchment area.