River interventions disturb the natural flow regime of channel. The impacts generated from river interventions is categorized based on the alteration of fluvial system including channel planform and ecology. The Brahmani River, one of the major peninsular river holds a significant importance for three major states of eastern India. This river has been subjected to periodic flooding events damaging high value property. Rengali multi-purpose river valley project (since 1985), located along middle reach of Brahmani, influence the downstream stretch behavior. A planform variation of increased braiding pattern is observed for downstream river. Interaction of reservoir-catchment along with planform variation assessment embraces a substantial importance for geologists and engineers. This research article aims to quantify variation in channel planform for pre-Rengali and post-Rengali time period along a selected reach integrating Sinuosity Index (SI) and Braid-Channel Ratio (BR) parameters using remote sensing techniques.