Statistical Analysis of Water Quality Data of Kukkarahalli Lake, Mysuru |
Author(s): |
Shruti Kulkarni , Sri Jahachamarajendra College of Engineering, Mysuru; Dr. Pushpa Tuppad, Sri Jayachamarajendra College, of Engineering, Mysuru |
Keywords: |
Water Quality, Kukkarahalli Lake |
Abstract |
The water quality data of Kukkarahalli Lake for 13 years obtained from KSPCB was analyzed for trends using Box-and Whisker’s plots, Mann–Kendall test, Exceedance Probability plots and Principal Component Analysis. Mann-Kendall test performed for water quality data interprets that there is increasing trend in the BOD concentrations while decreasing trend in DO concentration indicating deterioration of the water quality of lake. The increasing trend for phosphate and nitrate concentration also indicates that the state of the lake is turning eutrophic. The exceedance probability curves indicated that the BOD and phosphate concentrations exceeded the permissible limit for more than 62% and 95% of the total time period. DO values were lower than 4 mg/L for about 36% of the entire time period which indicates that the sustaining aquatic life is adversely affected while nitrate concentrations did not exceed the permissible limits. The variance explained by the principal components varied among the years in the study period. |
Other Details |
Paper ID: IJSRDV3I60627 Published in: Volume : 3, Issue : 6 Publication Date: 01/09/2015 Page(s): 1384-1388 |
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