Assessment of Water Quality in Surha Lake Based on Physiochemical Parameters,India

Surha lake is an important oxbow lake,lies in the area of jai prakash narayan bird sanctuary located in the eastern part of uttar pradesh (u.p),india. it is a major source of water of livelihood of huge populations. therefore,the present study (2006-08) aims to classify the water quality of the lake using cpi and nsfwqi,based on physiochemical parameters like do,bod,cod etc. pearson's correlation matrix was evaluated to find possible interrelations among assessed water quality parameters. the average cpi was found as 0.98,1.11 and 1.16 in year 2006,2007 and 2008 whereas nsfwqi were found as 47.25,49 and 49.88 respectively. the results indicate that the water quality is polluted and the consistently rising from slight to moderate during 2006-08,due to increased input of domestic waste and agricultural runoff from the lake catchments. therefore,the lake water is not suitable for drinking,bathing and other life supporting activity.