• Dipali P Patil
• Suresh Ukarande
• Seema Jagtap

The entire life system is depending upon two major resources land use and water, so management is required for these resources for optimum utilization. It can be achieved by understanding their characteristics. Hence Rainfall Runoff Modelling plays important role for water management. This Hydrological modelling can be done for this purpose by using various techniques. In the present study, hydrological model named Soil Water assessment tool (SWAT) is used for the determination of hydrological properties of the Bhatsa river basin in Maharashtra, India. The annual average rainfall of the basin is raging from 2000 to 4000 mm. The rainfall intensity is max from June to September and it’s zero in the remaining eight months. To manage the water deficiency problem, Kothale and Nadgaon rain gauge stations are selected. This study uses total 3 years of data from year 2013 to 2015.This study requires input data such as Meteorological data (Soil condition, Climatic condition etc) and GIS data (Digital Elevation Model, Land use/land cover data, soil data etc). Meteorological data was taken from the Bhatsa dam office, Shahapur. DEM data was taken from the SRTM (Shuttle Radar Topography Mission), Land use/land cover data was searched from Landat8 OLI software. SWAT simulation is done by following watershed basin delineation and Hydrological Response Unit (HRU) analysis. It is observed that after simulation observed stream flow is found to be max in year of 2015 i.e. 10 cm^3.It happens because of shortage of data. Calibration is needed for the model. hence, After calibration of model was done from period of 2013 to 2015 by using observed data. Calibrated model is further validated for year 2014 for getting better results. Efficiency of model can be done by using R^2 and Nash Sutcliffe Efficiency (NSE). Model got results of NSE as 0.71 and 0.735 for calibrated and validated period respectively. It is having R^2 value as 0.8130 which is considered as satisfactory result.

Rainfall runoff modelling, Arc SWAT, DEM, HRU.

"RAINFALL RUNOFF MODELLING OF BHATSA BASIN BY USING GIS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 3, page no.166-176, March-2019, Available :http://www.jetir.org/papers/JETIRAS06029.pdf

"RAINFALL RUNOFF MODELLING OF BHATSA BASIN BY USING GIS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 3, page no. pp166-176, March-2019, Available at : http://www.jetir.org/papers/JETIRAS06029.pdf