The Tungabhadra River is formed by the confluence of the Tunga River and the Bhadra River at Koodli which flow down the eastern slope of the Western Ghats in the state of Karnataka.The 2 rivers originate in Chikmagalur District of Karnataka along with the Nethravathi (west-flowing river, joining the Arabian Sea near Mangalore), the Tunga and the Bhadra rise at Gangamoola, in Varaha Parvatha in the Western Ghats forming parts of the Kuduremukh Iron Ore Project, at an elevation of 1198 metres. The Bhadra river flows through the industrial city Bhadravathi. More than 100 tributaries, streams, creeks, rivulets and the like contribute to the two rivers. The journey of the Tunga and the Bhadra is 147 km (91 mi) and 171 km (106 mi) respectively, till they join at Koodli, at an elevation of about 610 metres near Holehonnur, about 15 km (9.3 mi) from Shivamogga, areca granary of the country. It is a confluence of both the Dwaitha and the Adwaitha philosophies. From there, the Tungabhadra meanders through the plains to a distance of 531 km (330 mi) and mingles with the Krishna at Gondimalla, near the famous Alampur in Mahaboobnagar District of Telangana . The Varada flowing through Shimoga, Uttara Kannada and Haveri districts and Hagari in Chitradurga, Bellary district, Koppal District and Raichur Districts in Karnataka and the Handri in Kurnool distriict of A.P. are the main tributaries of the Tungabhadra. Many rivulets and streams join these tributaries.