Kashyap, P.S.Naik, Bijayalaxmi2019-08-192019-08-192019-05http://krishikosh.egranth.ac.in/handle/1/5810122332Soil and water are the two contrary sides of a coin that need to be monitored for watershed management point of view. In the present scenario with increase in population, a huge demand for water as well as land space is raising as a big question mark. Taking this issue into account, the impact on hydrological parameters due to change in land use & land cover has been studied in Nagavali River Basin of Odisha covering a total area of 9510 km2. SWAT is a semi distributed, continuous, deterministic hydrological model which was utilized for determining the changes on hydrological components due to variation in land use for specific years within the desired study area. During the total process the watershed was delineated to 29 subbasins with 249 HRUs. The developed SWAT model was calibrated for 11 years (2000-2010) and validated for 3 years (2011-2013) using SUFI-2 algorithm using SWAT-CUP. NSE and R2 for calibration were 0.91 in both cases where as in validation it was 0.79 and 0.96 respectively. The change in hydrological components due to land use scenarios was studied for five years i.e. 1985, 1995, 2005, 2015 and 2018. Evapotranspiration, precipitation, streamflow, lateral flow and groundwater contribution to stream were the five hydrological parameters that were considered for each year for the ongoing study. Evapotranspiration, precipitation and lateral flow were resulted maximum variation over the years.ennullThesis