Answer: Krishna
Notes: Tungabhadra River water turned green near villages in Mundargi taluk, Gadag district, Karnataka, causing panic. It is a major tributary of the Krishna River, sacred to Hindus, and mentioned as "Pampa" in the Ramayana. The river originates from the Tunga (147 km) and Bhadra (178 km) streams in the Western Ghats and runs 531 km to meet the Krishna River in Andhra Pradesh. It passes through Karnataka, Andhra Pradesh, and forms an interstate boundary.
