Master10
Rivers, Lakes, Dams & Water Resources25 Essential Exam Concepts

7 Important Lakes of Northeast India: Loktak, Gurudongmar & Biodiversity Facts

Northeast India is an exceptional physiographic zone characterized by high-altitude mountain chains, dramatic river valleys, and diverse aquatic ecosystems. Spanning eight states across the Eastern Himalayas and Indo-Burma biodiversity hotspots, the region contains a rich network of natural freshwater bodies, high-altitude glacial lakes, and riverine wetlands locally known as "beels" or "pats." These lacustrine environments perform essential ecological functions, acting as natural flood-moderation basins during the heavy monsoon season, recharging regional aquifers, harboring rare and endemic wildlife, and supporting traditional fisheries and indigenous livelihoods.

Among the most celebrated water bodies of the region is Loktak Lake in Manipur, the largest freshwater lake in Northeast India, renowned worldwide for its floating heterogeneous vegetation islands called "phumdis." Loktak hosts Keibul Lamjao National Park, the world's only floating national park and the exclusive habitat of the endangered Brow-antlered deer or Sangai (Rucervus eldii eldii). In the high-altitude trans-Himalayan landscape of North Sikkim lies Gurudongmar Lake, situated at an altitude of 5,430 meters (17,800 feet), venerated by both Buddhists and Sikhs as a sacred water source and feeding the headwaters of the Teesta River. East Sikkim is home to Tsomgo Lake (Changu Lake), a scenic glacial lake set at 3,753 meters on the historic pass toward Nathu La.

In the state of Meghalaya, Umiam Lake near Shillong represents a major artificial reservoir constructed in the early 1960s to harness the Umiam River for hydroelectric generation. Tripura features Rudrasagar Lake, a recognized Ramsar wetland celebrated for the historic Neermahal ("Water Palace") built in its center by Maharaja Bir Bikram Kishore Manikya in 1930. In southern Mizoram, Palak Dil (Pala Lake) forms the largest natural lake in the state, deeply integrated into the cultural folklore of the Mara people. In Assam, Deepor Beel, a sprawling riverine floodplain wetland southwest of Guwahati, is a designated Ramsar site that acts as a vital wintering ground for migratory waterfowl and an essential foraging corridor for Asian elephants. Preserving these seven lacustrine ecosystems is essential for sustaining regional biodiversity and water stability.

Essential Concepts & Key Facts

High-yield conceptual summaries for competitive exams and rapid revision.

  • Loktak Lake in Bishnupur district, Manipur, is the largest natural freshwater lake in Northeast India, spanning roughly 287 square kilometers.
  • Loktak Lake is famous for its "phumdis," which are floating heterogeneous masses of vegetation, soil, and decomposing organic matter.
  • Keibul Lamjao National Park on Loktak Lake is the world's only floating national park and the sole refuge of the endangered Sangai deer (Rucervus eldii eldii).
  • Loktak Lake was designated a Ramsar Wetland in 1990 and placed on the Montreux Record in 1993 due to ecological changes from the Ithai Barrage.
  • Gurudongmar Lake in North Sikkim, situated at 5,430 meters (17,800 feet), is one of the highest alpine freshwater lakes in India and the world.
  • Gurudongmar Lake is sacred to both Buddhists and Sikhs, and its outflow contributes to the headwater streams of the Teesta River.
  • Tsomgo Lake (Changu Lake) is a high-altitude glacial lake situated at 3,753 meters (12,313 feet) in East Sikkim along the route to Nathu La Pass.
  • Umiam Lake (Barapani), located near Shillong in Meghalaya, is a major artificial reservoir created by damming the Umiam River in the early 1960s.
  • Rudrasagar Lake (Twijilik) in Sipahijala district, Tripura, is a low-lying freshwater wetland designated as a Ramsar Site in 2005.
  • Neermahal ("Water Palace"), situated in the center of Rudrasagar Lake, was built in 1930 by Maharaja Bir Bikram Kishore Manikya in Hindu-Mughal style.
  • Palak Dil (Pala Lake) in Saiha district, Mizoram, is the largest natural lake in the state, located within the Mara Autonomous District Council.
  • Palak Dil is an ecologically critical wetland in the Indo-Burma biodiversity hotspot and is revered in the cultural folklore of the Mara people.
  • Deepor Beel, situated southwest of Guwahati in Assam, is a permanent freshwater lake in a former channel of the Brahmaputra River.
  • Designated as a Ramsar Site in 2002, Deepor Beel provides habitat for over 200 bird species, including the endangered Greater Adjutant Stork.
  • Deepor Beel functions as an important wildlife corridor for Asian elephants moving from the Rani and Garbhanga reserve forests to feed on aquatic plants.
  • Northeast India's lacustrine systems comprise glacial lakes, riverine floodplain wetlands (beels or pats), and tectonic depression water bodies.
  • In Manipur, traditional wetland bodies connected hydrologically to the Loktak basin are locally designated as "pats" (such as Pumlen Pat).
  • The Karbi Longpi and Umrangso reservoirs in Assam are major artificial impoundments supporting regional hydroelectricity and flood control.
  • Sela Lake, located at an altitude of 4,170 meters (13,700 feet) near Sela Pass in Arunachal Pradesh, is a sacred high-altitude glacial lake.
  • Northeast wetlands function as natural flood sponges during the monsoon, mitigating peak flood surges from the Brahmaputra and Barak rivers.
  • Eutrophication, siltation, urban encroachment, and invasive water hyacinth (Eichhornia crassipes) constitute severe threats to these wetland basins.
  • The Loktak Development Authority (LDA) was established by the Government of Manipur under the Manipur Loktak Lake (Protection) Act, 2006.

Related Knowledge Topics to Discover

Looking for more specific GK questions?

Search across all 0 7 Important Lakes of Northeast India questions or browse 52,757+ verified questions across 65 domains.

Open Interactive Search