Water quality of Suswa River in Dehradun was assessed in terms of their Physico-chemical characteristics. Samples
were collected on the monthly basis since February to April, 2018 from five sites along the Doon valley. Total number of fifteen
samples were collected and pH, Temperature, Alkalinity, Dissolved Oxygen ,Total Hardness , Total Dissolved Solids (TDS) ,
Salinity , Biological Oxygen Demand (BOD), Calcium and Magnesium concentration were determined . During the course of
study minor difference in physical and chemical parameters of the study area were observed.