The major human activity in the catchments area is dry season farming. Heaps of garbage, human excreta and cattle dung were found on slope of the bridge across the stream and these present ugly sites at various spots along the stream. Three sampling stations along a 2.5km stretch were chosen for the study. Station 1 is about 1km from the source. Here the stream is wider than deep. Heaps of refuse were seen by the sides of the bridge across the stream, with the decomposing refuse emitting foul smell around the catchments area. The vegetation is mainly grasses and creeping plants and there was no farming activity at