Parameter | Methodology |
Turbidity | Turbidity was determined on-site with an MRC turbidimeter using duplicate sampling at all sampling points in line with [24] . |
TSS | TSS was measured by collecting three 500 ml samples from each sampling point. Each sample set was mixed, and 500 ml taken from the composite. The composites were transported in a cool box for analysis in the Water Resources Authority (WRA) Regional laboratory in Kakamega. |
Soil Physico-Chemical Properties | Soil samples from each site were determined for moisture content, total N, P, pH, OC and soil textural class. A duplicate 5 m × 5 m quadrat was established at each site 5 m from the riverbank. The 500 g composite soil samples were collected from each point on the quadrat using an auger at 0 to 15 cm and 15 cm to 30 cm depths (Figure 2). They were then mixed and transported in a cool box for determination at Kenya Agricultural and livestock Research Organization (KALRO) Laboratory, Kakamega. |