The Tons is the last river in the Himalayas that drains
west into the Bay of Bengal .The next valley belongs to a seperate system
of rivers that drain west into the Arabian Sea.
The Tons has three major upper tribs above Netwar called the
Rupin , Supin and Har ki doon, sounds that all of them are run-able and have
trekking trails/roads in close proximity. Below Mori the Pabbar
River flows in just above the town if Tiuni and almost doubles
the volume.
The Tons has a alpine nature with many long
technical rapids Class IV (+) in its upper sections above the town of Mori
that has a Class III rafting trip.
The lower Tons exits the mountains close to
the town of Dehradun and has a dam at Minus in its lower section.
There is a easy gorge section above the dam and a good Class IV section below Mori till the confluence with the Pabbar.
