Tehri Lake

Tehri Lake is a large artificial reservoir in Uttarakhand, formed by the Tehri Dam on the Bhagirathi River. 
It came into existence during the construction of Tehri Dam when the water from the Bhagirathi River was diverted to fill the dam reservoir.
Lies at an elevation of about 1,700 meters
Around 42 km long and about 262 meters deep
Created for electricity generation, drinking water, and irrigation
Popular for adventure sports and scenic tourism