Examining the downstream geomorphic impact of a large dam under climate change

Abstract Long-term geomorphic evolution of rivers depends both on the amount sediment supply and river’s ability to transport that sediment. Climate change is anticipated flow frequency distributions yield could thus alter trajectory many regulated rivers. We aim examine possible response upper Godavari River, India, climate using two well-accepted metrics: sediment-transporting flows (T*) ratio flux below above a dam (S*). Soil Water Assessment Tool (SWAT) was used simulate streamflow in basin. calibrated validated model SWAT-CUP for pre- (1971–75) post-dam (1976–81) conditions downstream Jayakwadi dam. The performance good (NS value > 0.6 discharge PBIAS  0.6 r-factor