The Tamur River is a major river in eastern Nepal, which begins around Kanchenjunga. The Tamor and the Arun join the Sun Koshi at Tribenighat to form the giant Saptakoshi which flows through Mahabharat Range on to the Gangetic plain.
The Tamur River is a major river in eastern Nepal, which begins around Kanchenjunga. The Tamor and the Arun join the Sun Koshi at Tribenighat to form the giant Saptakoshi which flows through Mahabharat Range on to the Gangetic plain.
Udayapur District (Nepali: उदयपुर जिल्ला, is one of the 14 districts of Koshi Province in eastern Nepal. The district, with Triyuga as its district headquarters, covers an area of 2,063 km (797 sq mi) and in 2001 had a population of 287,689, in 2011 of 317,532, in 2021 of 342,773
Rivers and hills form natural borders for Udayapur District. The Koshi River to the east separates it from Sunsari District and the Sun Kosi River to the north separates it from Bhojpur and Khotang Districts. The Tawa Khola separates it from Sindhuli District to the west and the Siwalik foothills to the south separate it from the outer Tarai of Siraha and Saptari. The Koshi Tappu Wildlife Reserve lies to the east in Udayapur, Sunsari and Saptari Districts.