This research aims to explore the tectonic influences shaping the development of streams within the Lendi River sub-basin. In this research employed geomorphic indices of active tectonic (GIAT) parameters, such as the bifurcation ratio (Rb), basin elongation ratio (Re), hypsometric integral analysis (HI), basin asymmetry factor (AF), transverse topographic symmetry (T), stream gradient length ratio (SL), river longitudinal profile (RLP), lineaments, and abnormal stream behavior. Geologically, the Lendi River flows over three types of rock formations, namely Quaternary deposits (Pleistocene to Holocene age), Deccan Volcanic Basalt (DVB) from the upper (late) Cretaceous to lower (early) Eocene, and the Peninsular Gneissic Complex (PGC) from the Precambrian age. This study reveals that Lendi river exhibits a semi-elongated shape, and while basin asymmetry suggests symmetry, transverse topographic symmetry indicates a tilted basin. Hypsometric integral analysis indicates an early mature stage of basin evolution. The river’s longitudinal profile value of 26.3% and stream length gradient ratio index of 6.73 suggest a second-order anomaly. Other parameters, like, abnormal stream behavior concerning the main river, trellis drainage pattern, lineament analysis, waterfall breaks, gorges, and Quaternary sediment analysis, contribute to the GIAT analysis of watersheds. Notably, tectonic evidence including stike-slip faults in granite terrain is observed in Precambrian rock formations as well as Quaternary sediments near the Degloor town in the Lendi river area. This extensive analysis sheds light on the tectonic influences shaping the Lendi river basin evolution and helps comprehend the ongoing geological processes impacting stream behavior and landscape formation.