Evaluation of Hydrological Components Using Hydrological Model SWAT for Malaprabha Subbasin

Authors

  • Department of Water & Land Management, VTU, Belagavi
  • Department of Water & Land Management, VTU, Belagavi
  • Department of Water & Land Management, VTU, Belagavi

DOI:

https://doi.org/10.1007/s12594-018-0981-z

Abstract

In this study Malaprabha sub-basin is selected for evaluation of water resource in the basin, as there is decline in flow due to reduced rainfall over years and also due to increased activities in the upstream areas of the catchment. The study focused on evaluation of hydrological components for Malaprabha sub-basin using hydrological model known as soil and water assessment tool (SWAT). The model was implemented for Malaprabha sub-basin using digital elevation model (DEM), land use, soil and meteorological data etc. The model performance was evaluated by calibration and validation approach. The calibration and validation of the model was done by using the data for a period from 1991- 2000. It is found that R2 and NSE values are 0.67 and 0.69 during calibration and 0.73 and 0.60 during validation. The both coefficients are satisfying the model results and are used for evaluating the hydrological components for the basin. Finally, the spatial distribution maps were prepared for Malaprabha sub-basin for different hydrological components like water yield, evapotranspiration, groundwater recharge, sediment yield and discharge. The results can be used for decision making purpose and further for planning of water harvesting structure.

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Published

2018-08-01

How to Cite

Patil, N. S., Nataraja, M., & Omprakash, T. (2018). Evaluation of Hydrological Components Using Hydrological Model SWAT for Malaprabha Subbasin. Journal of Geological Society of India, 92(2), 195–200. https://doi.org/10.1007/s12594-018-0981-z

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