(Last Updated on : 21/05/2015)
Tons river is an important tributary of the Yamuna River. This river joins Yamuna at Kalsi in the Northwestern part of Dehradun valley, which is approximately 48 km. away from Dehradun. The origin of Tons river is at the convergence of two feeder streams - the Supin river rises from in the Northern part of the Tons catchment near the Himachal Pradesh and Uttar Pradesh border and the Rupin river rises from a glacier at the head of the famous Har-Ki-Dun valley in the North-North Eastern part of the Tons catchment. These two feeder streams converge near the mountain hamlet of Naitwar and the channel downstream of Naitwar is known as Tons River. The river flows along a V shaped valley. Several settlements have come up along the Tons River such as Tuni, Naitwar and Menus and the population is also moderately high.
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