Rivers of India · Ends in Brahmaputra

Sankosh River: source, course, dams and places

Q: Where does the Sankosh originate?

At Northern Bhutan (Flows past Punakha as the Puna Tsang Chhu).

Q: Where does the Sankosh end?

In Brahmaputra (Lower Assam–Bangladesh border area).

Sankosh (Puna Tsang Chhu) has no single agreed length (length varies by source). It rises at Northern Bhutan and ends in Brahmaputra. A map-first summary for exam revision.

By Pradyumna Gayake · Updated 5 Nov 2026 · From the same data as the app’s Sankosh study card

The Sankosh drawn from AtlasMitra’s river data. Circle: source. Diamonds: dams and barrages. Dots: places on its course. India’s boundary as per the Survey of India.

Source

The Sankosh rises at Northern Bhutan, Flows past Punakha as the Puna Tsang Chhu. 27.51° N, 89.89° E

Course

Its main course runs Bhutan → Assam–West Bengal border, and it ends in Brahmaputra: lower Assam–Bangladesh border area.

Key facts

Part of the Assam–West Bengal boundary
Rises in the Gasa region of Bhutan.

Quick questions

Where does the Sankosh originate?

At Northern Bhutan (Flows past Punakha as the Puna Tsang Chhu).

Where does the Sankosh end?

In Brahmaputra (Lower Assam–Bangladesh border area).

How long is the Sankosh?

Its length is not settled: length varies by source.