![]() ![]() ![]() The output of the watershed modeling (AVSWAT 2000) was used to identify critical area of non point source loading for sediment as well as nutrient sources. The best management practice were applied on these area and has shown that intensive water quality monitoring program can result into the reduction of annual sediment yield and nutrient load for long times. The watershed modeling was used to analyze different management scenarios to minimize point and non-point pollution, and applied in the total maximum daily load (TMDL) studies. The aims of the preliminary study are to survey and identify the resources of sediment and nutrient pollutants, to determine the total maximum daily load (TMDL) of suspended sediment and nutrient as Nitrogen and Phosphorous, and to apply the watershed modeling for assessment of TMDL at Lesti River basin. It is calculated as the sum of permissible allotments of point sources of suspended sediment and nutrient, permissible allotments of non point sources of pollutant, background (natural) loading of suspended sediment, and a margin of safety. The total maximum daily load (TMDL) for suspended sediment and nutrient are the maximum quantity of suspended sediment and nutrient that can enter a waterway without affecting the beneficial uses of the waterway. Sediment and nutrient are two most common pollutants reported by State Minister for the Environment. ![]() Increasing population, as well as agricultural and industrial activities contributes to the additional pollution discharge to the river. At the present decade, water pollution in river is a serious problem. ![]()
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