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Country    Nepal
Zone Sagarmatha Zone
District Udayapur District
Population (2011)
 • Total 70.000
Time zone Nepal Time (UTC+5:45)
Postal code 56300
Area code(s) 035

Gaighat or Triyuga (Nepali: त्रियुगा) is a city and municipality in the Udayapur (उदयपुर) District in the Sagarmatha zone of south-eastern Nepal. According to the 1991 Nepal census, it had a population of 55,291.[1] In the census of 2011 Triyuga had 70.000 inhabitants.

Geography and wildlife[edit]

This city is in the famous Udyapur Valley. Gaighat (गाइघाट) (other name of Triyuga) is the shadow of a historic kingdom of Sen dynasty in Udayapur Ghadhi (Chaudandi), this Inner tarai Valley of central south Nepal has a glorious history with a bright future. Udayapur Ghadi is in the pick of the Hill, and similarly, Gaighat is in the plane of the Valley. Udayapur Valley is the biggest valley in east Nepal, with very nice natural attraction, such as the Triyuga river falling from the heart of the city, and the eastern side of Valley Kosi River (Nepal’s Biggest river) is falling down. The river is the main attraction of the country, because of the beautiful phenomenon. The Koshi Island wild life reserve is inside a big Island of Koshi River, which is the store of the wild water buffalo (called Arna) in Nepal. The reserve is a wetland of international significance. In 1987, it was declared a Ramsar site. It is home to more than 280 bird species including 20 duck species, 2 species of ibises, many storks, egrets and herons. The endangered swamp partridge and Bengal florican are found here. The Koshi Barge is an extremely important resting-place for migratory birds.

The last surviving population of wild buffalo, or arna, is found here. The reserve is also home to many types of mammals, such as hog deer, spotted deer, wild boar, and blue bull. The endangered Gharial crocodile and Gangetic dolphin have been recorded in the Koshi River.

The vegetation mainly includes tall khar-pater grasslands, with a few patches of khair-sissoo scrub forest, and deciduous mixed riverine forest.

During the monsoon, the reserve is flooded with depths ranging from 10 to 300 cm (4 to 120 in). From season to season, the Sapta-Koshi River changes its course.

Transportation and communication[edit]

Sagarmatha Highway from Lahan connects Gaighat with the Mahendra highway, and all other part of the country, after crossing valley in south Mahendra Highway. This highway connects Ghaighat, and other Town Katari, with the Okhaldhunga and in future Khotang Ramechap District of the Mountain. An old road to connect Dharan through Inner Tarai is just going to reopen for easier movement of the Inner Tarai Valleys of Sindhuli, and Udyapur of Western Region, to Dharan, a meager city of Eastern Nepal. This road from Sindhuli comes alongside of Ranibas Katari, and goes to Chatar to Cross Koshi and Reach Dharan. चौडण्डिको फेदीमा सिखरमाडी पर्छ र त्यो गाउ पनि पर्यटकिय हिसावले रमणिय छ ।

Phone, fax, and Internet is available in the town.


Resorts are available near Koshi Island wildlife, and in town lodge, and some resorts with sufficient service are available. Local transport rickshaw, Jeeps for Safari to Koshi Jeeps, and Taxis, are available.


To Promote local culture Triyuga has one FM radio station Radio Triyuga - 104 MHz Which is a Community radio Station.


  1. ^ "Nepal Census 2001". Nepal's Village Development Committees. Digital Himalaya. Retrieved 13 November 2008. 

External links[edit]

Coordinates: 26°47′31″N 86°41′56″E / 26.7919°N 86.699°E / 26.7919; 86.699