| Sub basins | Parameter | Maximum | Minimum | Mean | 50% | Remarks |
| Sub basin dominated by tea plantations | TSSC (g/l) | 0.04 | 0.01 | 0.019 | 0.0167 | Low TSSC |
| Turbidity (NTU) | 95 | 15.2 | 29.5 | 21.5 | Moderate turbidity | |
| Sediment (tons/day) | 14.5 | 1.02 | 7.05 | 6.52 | Low sediment load | |
| Sub basin dominated by forest cover | TSSC (g/l) | 0.028 | 0.007 | 0.019 | 0.02 | Low TSSC |
| Turbidity (NTU) | 27 | 4.3 | 17.4 | 18.2 | Low turbidity levels | |
| Sediment (tons/day) | 8.3 | 0.4 | 4.02 | 2.8 | Low sediment load | |
| Sub basin dominated by mixed farming | TSSC (g/l) | 0.62 | 0.056 | 0.164 | 0.1 | High TSSC |
| Turbidity (NTU) | 637 | 71 | 151.4 | 91 | High turbidity levels | |
| Sediment (tons/day) | 952 | 31.9 | 169.1 | 76.4 | High sediment load | |
| Combined land cover Sondu Miriu Basin | TSSC (g/l) | 0.26 | 0.047 | 0.104 | 0.08 | High TSSC |
| Turbidity (NTU) | 231 | 60 | 85.1 | 68 | High turbidity levels | |
| Sediment (tons/day) | 631.5 | 75.5 | 227.1 | 170.4 | High sediment load |