According to Venkateswaralu (2006), presence of Chlorella vulgaris indicated contamination of aquatic bodies. In the diversity, Chlorella under Chlorophyceae was found to be dominant species in the assessment indicating that water quality of selected aquatic body is slightly polluted by mixing of organic material. Our result coincides with observations of Palmer (1969) who reported that Oscillatoria, Scendesmus, Navicula are found in organic rich aquatic bodies. Some of the species like Euglena and Phacus were found in highly polluted aquatic bodies.
Among Rotifers, Branchionus was the dominant genus. Genus Brancionus indicate eutrophic aquatic body (Sladecek, 1983) and hence its abundant presence is