Open AccessImpact of Change in Land Use Land Cover on Water Resources in Gundlakamma Sub Basin
Author(s) -
N. Hari,
A. Mani,
Hemendra Kumar,
V. Srinivasa Rao,
L. Edukondalu
Publication year - 2020
Publication title -
journal of geography, environment and earth science international
Language(s) - English
Resource type - Journals
ISSN - 2454-7352
DOI - 10.9734/jgeesi/2020/v24i1030262
Subject(s) - hydrology (agriculture) , outflow , environmental science , soil and water assessment tool , land cover , swat model , land use , structural basin , water resources , agricultural land , land use, land use change and forestry , drainage basin , geology , geography , streamflow , geomorphology , cartography , meteorology , ecology , civil engineering , geotechnical engineering , engineering , biology
The present study was conducted to investigate the impact of land use cover change on water resources availability in Gundlakamma Subbasin. The Gundlakamma subbasin is predominantly agricultural based and Gundlakamma is a seasonal river. Hence, a study has been conducted to simulate the availability of water resources in the subbasin using SWAT (Soil and Water Assessment Tool) model. The database was generated like DEM, soil map and land use/cover using the secondary data and field survey. The SWAT model was calibrated three years (2010-2012) and validated with four years (2013-2016) with the observed discharges from reservoir outflow. The values of NSE and R2 was found as 0.79 and 0.87 during calibration, 0.65 and 0.72, respectively during validation. The modelled values showed reasonably good agreement with the observed values of reservoir outflow, both during calibration and validation periods. The reservoir outflow in the subbasin was quantified under the change land use conditions.