RAVIKUMAR, B.C.VINOD KUMAR, S.2021-09-282021-09-282018-08-01Th-12070https://krishikosh.egranth.ac.in/handle/1/5810176360Different land use systems and their response to hydrologic characteristics considered as most important issue in runoff estimation. Fragmentation of farm holding became imperative resulted in intensive agricultural activities. More resource conservative practices for insitu moisture conservation and water storage in farm land lead to less runoff contribution. In order to characterize watershed behavior and runoff contribution, the present study was conducted at Halayapura micro- watershed, Karnataka state with geographical area of 503 ha. The main objective of this study was to determine the potential impacts of the land use land cover (LULC) and soil-water conservation measures on runoff. Natural Resources Conservation Service (NRCS-CN) curve number method was used for runoff estimation. LISS-IV multispectral and Cartosat-1 PAN merged satellite Imagery, toposheet from Survey of India and cadastral maps were used as base maps. Detailed soil and land characteristics viz. soil phase, soil texture, land slope, soil depth, current land use and land cover patterns, water harvesting structure along with bund status were recorded. In order to store, edit and preparation different thematic maps, a geodatabase was developed using Geographical Information System tools. The maximum storm event for 40 years return period of 152.40 mm was considered for runoff estimation. The run-off from all the land use systems contributed to stream outlet was estimated as 77.16 mm, 107.38 mm and 130.84 mm for AMC-I, AMC- II and AMC-III conditions respectively. Developed Geodatabase and thematic maps found more reliable in runoff estimation. These resources are useful for decision making and further analysis.EnglishThesis