Estimation of Water Balance Components of Patapur Micro Watershed in the Tungabhadra River Basin Using QSWAT Model in QGIS Environment

Aims: Estimation of water balance components a micro watershed by employing efficient calibrated and validated SWAT model helps to understand each are important plan agricultural management, climate change impact assessment, flow forecasting, quality assessment etc. This study minimizes possibility drought mismanagement, hence will lead proper utilization accessible resource.
 Place Duration Study: In the present study, QSWAT hydrological was using measured runoff data from outlet then put use for long term simulations in Patapur watershed, Raichur District, Karnataka weather, land cover, soil digital elevation period 37 years (1980-2016).
 Methodology: The set up input accurately data. used simulation 1980-2016 estimated.
 Results: results revealed that performed better simulating other components. daily calibration statistics behavioral parameters SWAT-CUP stream discharge during 2012-2014 R2, NS, PBIAS RSR values between simulated found be 0.88, 0.87, -21.30 0.36, respectively indicating performance very good terms both R2 NS value as their being >0.75 per ratings model.
 yield is draining out includes surface runoff, lateral groundwater contribution minus transmission losses (water lost deep percolation evapo-transpiration) which amounts 168.40 mm. annual indicated 527.70 mm precipitation, 322.50 114.91 evapo-transpiration respectively. also 82.86 contributed percolating into shallow aquifer followed 43.40 base but ground recharge storage meager accounts only 4.14 matter concern over watershed. indicates 58.77 64.54% rainfall evapotranspiration less amount through flow. Groundwater were contributing 3.68 10.13% 9.95 19.82 % respectively, total rainfall. During highest year, about 33.22, 1.10% transformed lowest 8.31%, 3.68% 1.35%