Teesta River

Teesta River
Countries	India, Bangladesh
States	Sikkim, India, West Bengal, India, Rangpur, Bangladesh
Tributaries
- left	Dik Chhu, Rangpo River, Lang Lang Chu, Lachung River, Rani Khola
- right	Ranghap Chhu, Rangeet, Ringyong Chhu
City	Rangpo, Kalimpong, Jalpaiguri
Source	Pauhunri, Zemu Glacier, Lake Cholamu, Gurudongmar Lake
- location	Sikkim, India
- elevation	7,068 m (23,189 ft)
Mouth	Brahmaputra river
- location	Fulchori, Rangpur, Bangladesh
Length	309 km (192 mi)
Basin	12,540 km2 (4,842 sq mi)
Map of combined river system in North Bengal

The Teesta River is a 309 km (192 mi) long river flowing through the Indian state of Sikkim. It carves out from the verdant Himalayas in temperate and tropical river valleys and forms the border between Sikkim and West Bengal. It flows through the cities of Rangpo, Jalpaiguri and Kalimpong and joins the Jamuna (Brahmaputra) in Bangladesh. It drains an area of 12,540 km² (4,840 sq mi).

The Teesta River originates from the Pahunri (or Teesta Kangse) glacier above 7,068 metres (23,189 ft), and flows southward through gorges and rapids in the Sikkim Himalaya.

It is fed by rivulets arising in the Thangu, Yumthang and Donkha mountain ranges. The river then flows past the town of Rangpo where the Rangpo River joins, and where it forms the border between Sikkim and West Bengal up to Teesta Bazaar. Just before the Teesta Bridge, where the roads from Kalimpong and Darjeeling join, the river is met by its main tributary, the Rangeet River.

At this point, it changes course southwards flowing into West Bengal. The river hits the plains at Sevoke, 22 kilometres (14 mi) northeast of Siliguri, where it is spanned by the Coronation Bridge linking the northeast states to the rest of India. The river then goes merging up with the Brahmaputra River after it bifurcates the city of Jalpaiguri and flows just touching Cooch Behar district at Mekhliganj and moves to Fulchori in Bangladesh.