The Tungabhadra River is a river in India that starts and flows through the state of Karnataka during most of its course, before flowing along the border between Telangana, Andhra Pradesh and ultimately joining the Krishna River near Gundimalla village in Jogulamba Gadwal district of Telangana. The river Tungabhadra derives its name from two streams viz., the Tunga, about 147 km (91.6 miles) long and the Bhadra, about 178 km (110.9 miles) long which rise in the Western Ghats. The river after the confluence of the two streams near Shimoga, runs for about 531 km (330 miles) till it joins the river Krishna at Sangamaleshwaram in Andhra Pradesh. It runs for 382 km (237 miles) in Karnataka, forms the boundary between Karnataka and Andhra Pradesh for 58 km (36 miles) and further runs for the next 91 km (57 miles) in Andhra Pradesh. The total catchment area of the river is 69,552 km2 (26,856 Sq miles) up to its confluence with Krishna and it is 28,177 km2 (10,880 Sq miles) up to Tungabhadra Dam. It is influenced chiefly by the South-West monsoon. It is a perennial river but the summer flows dwindle to as low as 2.83 to 1.42 cumec (100 to 50 cusec). From Wikipedia
