The Shannon Weiner’s Diversity Index (H’) and Shannon evenness values (J’) were found to range from 0.30.69 and 0.53 0.97,
respectively indicating perturbation of the system.
Again in terms of physicochemical properties of water the lake is in a satisfactory condition where all the parameters arewell within the range of IS 10500.
The DO values were found to range from 6.8 to14.8 mgl1.
Free CO2 fluctuated from 1 to 4.98 mgl1 and nitrate in water ranged from 0.4 to 2.1 mgl1.
Margalef’s water quality index values of most of the samplings also indicated clean water condition of the lake.
Correlation coefficient analyses of the environmental variables, aquatic insect diversity and density of the lake revealed that aquatic insect diversity of the lake is mainly governed by dissolved oxygen, nitrate, and free carbon dioxide.