1Department of Civil Engineering, National Institute of Technology Raipur, Raipur, India
2Soil and Water Engineering, BRSM College of Agricultural Engineering and Technology & Research Station, Mungeli, India
Volume of runoff created by the watershed is the main factor in hydrological modelling. But now-a-days land use land cover change and climate change can be taken as major factors in the change of the hydrological system. As a result, an attempt has been made to analyse climate trends as well as the effects of LULC on runoff in the basin. Hasdeo river basin is located in the Koriya district of Chhattisgarh village. The LULC trend was estimated using temporal multispectral data from Landsat-8, Landsat-7 and Landsat-5 TM for the years 1990, 2010 and 2020. It is observed that the forest cover has decreased drastically, especially light forest, by 68.07 % between 2010 to 2020, and conversion occurred to agricultural land with a percentage increase of 24.45 %. The Soil and Water Assessment Tool (SWAT) was utilized to investigate the impact of climate variability and human activities on Hasdeo river flows. Calibration and Validation of three decades (1990, 2010 and 2020) simulations show the coefficient of correlation (R2) as 0.76, 0.76 and 0.85 for the years 1990, 2010 and 2020 respectively. Mann-Kendall, Modified Mann Kendall and Theil Sen Slope Estimator are being used for trend analysis of rainfall and temperature. There is no significant positive trend of rainfall in the stations. Forest cover decreases by about 1.19 % from 1990 to 2010 and about 0.19 % from 2010 to 2020.
SWAT, LULC (land use land cover), Upper Hasdeo basin
