HYDROGEOMORPHOLOGY OF CHEVELLA BASIN, RANGA REDDY DISTRICT, TELANGANA STATE

Abstract

Chevella basin of Ranga Reddy district in Andhra Pradesh is one of the drought prone basins. The methods and materials used for the survey are topographic maps, Survey of India (SoI) in 1: 25,000 scale geomorphology map, groundwater prospectus map, cadastral map, Global Positioning System (GPS) and Geographic Information System (GIS). Prominent geological formations in the basin are Deccan traps, laterites and peninsular gneissic complex. Slope of the basin is towards north east and is nearly horizontal. There is a 5th order stream in the basin and has moderate erosion characteristics. Sub dendritic to sub parallel drainage pattern is observed in the basin. Major and minor fracture and lineament structures originated at 3rd, 4th and 5th order streams. The major geomorphic units in the area are moderately dissected plateau, shallow weathered plateau, shallow valley fill, slightly dissected plateau, pediment and inselberg. Most of the land forms are suitable for creation of recharge pits and check dams for the development of ground water