Dumboor Lake

Dumboor Lake is a large reservoir in Gandatwisa (Ganda Twisa) in Dhalai district, Tripura, about 120 km from Agartala. Formed by the damming of the Raima and Saima rivers for the Gumti Hydro Electric Project, it covers about 41 sq km with 48 islands. Surrounded by hills and forests, it is known for boating, island visits, migratory birds in winter, and the annual Poush Mela at nearby Tirthamukh.

Visitors can expect a large reservoir surrounded by forested hills with calm waters dotted with 48 small islands. The main visitor area includes boating jetties, viewpoints overlooking the lake, and access to islands such as Narikel Kunja and Narkel Kunja by motorboat. The setting is natural and open, suitable for sightseeing, photography, picnicking and birdwatching, especially in winter when migratory birds visit. Facilities are basic and tourism-focused.

Dumboor Lake is an artificial reservoir created by the Gumti Hydro Electric Project with a dam constructed in 1974 across the confluence of the Raima and Saima rivers. The project was developed for hydroelectric power generation and created the extensive water body now known as Dumboor Lake.

The lake area is culturally significant for the annual Poush Mela held at Tirthamukh near the lake, where devotees gather for a holy dip at the confluence. The lake and its islands are also an important leisure and picnic destination for local communities in Tripura.