Analyzing the Effect of Temperature on DO and BOD of the Tapi River using QUAL2Kw Model

Environmental pollution and climate change is the ultimate result of rapid urbanization. The in environmental conditions due to undesirable human activities increases local ambient temperature hence it leading a rise river water temperature. Tapi main source drinking for Surat city, Gujarat, India. A stretch has been studied from Kamrej Causeway which about 22.39 km. quality was found be degraded excessive discharge pollutants various points non-point sources. Extreme into decreases dissolved oxygen (DO) concentration. At same time increase temperature, process transformation atmospheric O2 gas form also becomes very slow. In this study, QUAL2Kw one - dimension model applied assess DO BOD at locations. calibrated validated with observed data. evaluate effects on river. maximum, minimum, average March, April, May year 1991 2021 were considered. revealed that full km not able maintain minimum concentration, biochemical demand (BOD) subsequently increased downstream stretch. It levels tremendously fluctuate