The Doyang River is one of the most important, biggest and longest river located in the Wokha District of Nagaland. It is called as Dzu or Dzulu by the Angamis, the natives of Wokha. The main tributaries of this river are Tsui, Tullo and Tishi. The Doyang River originates from the north and then slightly turns toward east when it received an addition of Saju, an eastward parallel tributary. The river then enters Zunheboto district still flowing north westwardly. It later on forms a boundary line between Sema and Lotha areas. In the west of Litami it makes westward bend and emerged in the western Lotha area in Wokha district, and proceeds to the southern border of the district, it suddenly turns westward and then debouches the hills for the plains west of Koro village and then finally falls in the Dhansiri river of Assam valleys.
Doyang is not only important river for Wokha district alone but it is also equally an important river of Nagaland. In the valley along the Doyang terrace cultivation is being carried out successfully. Besides the Doyang Hydro Project is constructed in this river which is visible from many hilltop villages in the surrounding areas.
This Hydel projects has a large quantity of water impounded in a dam with a capacity of 3 X 25 MW and an estimated annual generation of 227 million units was commissioned on the 2nd week of July 2000. This project 75 MW Doyang Hydro Project is the only major hydro project located in Wokha District of Nagaland. The project was constructed, owned and run by North East Electricity Power Corporation (NEEPCO) whereas the Nagaland Department of Power is responsible for generation, transmission and distribution of power in the Stat. The power generated by Doyang is distributed among all seven North Eastern states with the major share of power specified to host stat. Doyang River has developed a 75 MW hydro project constructed, owned and operated by NEEPCO.
Nagaland is a state in the far north-eastern part of India bordering the state of Assam to the west, Arunachal Pradesh and part of Assam to the north, Burma to the east and Manipur to the south. The capital state of Nagaland is Kohima and the largest as well as the commercial city is Dimapur. Nagaland is the 16th state of the Indian Union and established on December 1, 1963. It is divided into eleven districts: Kohima, Phek, Mokokchung, Wokha, Zunheboto, Tuensang, Mon, Dimapur, Kiphire, Longleng and Peren. The state as a whole is a largely mountainous state with agriculture being the most important economic activity in Nagaland. The principal crops include rice, corn, millets, pulses, tobacco, oilseeds, sugarcane, potatoes and fibres. Other economy boosters are forestry, cottage industries, insurance, real estate and tourism.

Source: Wikipedia & http://wokha.nic.in/wokha.htm

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