| Land cover | Elgeyo | Nyambene | ||
| Water Preserved (m3) | Water Purification Value (KES) | Water Preserved | Water Purification Value (KES) | |
| Dense Forest | 34566564.18 | 1088846771.7 | 35813186.8 | 1128115385.2 |
| Moderate Forest | 10142986.88 | 319504086.82 | 1776321.47 | 55954126.37 |
| Wooded Grassland | 6013916.68 | 189438375.32 | 379161.17 | 11943576.92 |
| Open Grassland | 3486764.97 | 109833096.68 | - | - |
| Perennial Cropland | 772745.02 | 24341468.25 | 729679.64 | 22984908.56 |
| Annual Cropland | 15085939.12 | 475207082.21 | 281924.17 | 8880611.31 |
| Vegetated Wetland | 225504.49 | 7103391.33 | - | - |
| Open Water | 67553.13 | 2127923.70 | - | - |
| Other lands | - | - | 16963.24 | 534342.14 |
| Total | 70361974.48 | 2216402196.0 | 38997236.5 | 1228412950.5 |