Kopili River ●It is an interstate river in Northeast India tha | UPSC SUPER SIMPLIFIED

Kopili River
●It is an interstate river in Northeast India that flows through the states of Meghalaya and Assam and is the largest south bank tributary of the Brahmaputra in Assam.
●Unscientific opencast coal mining in the Kopili's upper reaches in Meghalaya has led to acidification of the river which has in turn left part of the river's course biologically dead, making the water unfit for human consumption.