Location and Physical Setting
Glaw Lake, also known as Glaw Tuwi, is a high-altitude freshwater lake located in Lohit district of Arunachal Pradesh.
It lies within the landscape of the Kamlang Tiger Reserve and Wildlife Sanctuary, surrounded by evergreen forests and mountains.
The lake is situated at an elevation of around 1,200 metres and covers roughly 82 hectares.
It is approached mainly through the Wakro region and requires a significant trek through forested and mountainous terrain.
Ecological Importance
Glaw Lake forms part of the biodiversity-rich eastern Himalayan landscape.
Its surrounding forests support:
- tropical and subtropical vegetation;
- orchids and other specialised flora;
- freshwater species;
- birds and butterflies;
- mammals associated with the Kamlang landscape.
The wider Kamlang Tiger Reserve contains important wildlife such as:
- Hoolock gibbon;
- clouded leopard;
- Asian elephant;
- hornbills;
- White-bellied Heron.
The lake and surrounding wetlands also help regulate local water availability and support the hydrological system connected with the Kamlang River.
Ramsar Status
In 2026, Glaw Lake was designated a Wetland of International Importance under the Ramsar Convention.
It became:
- India’s 101st Ramsar Site;
- the first Ramsar Site in Arunachal Pradesh.
Ramsar designation recognises wetlands that possess significant ecological, hydrological or biodiversity value.
The recognition requires emphasis on maintaining the lake’s ecological character while allowing sustainable use compatible with conservation.
Cultural Importance
Glaw Lake has strong cultural significance for the indigenous Mishmi communities of the region.
The lake is traditionally regarded as a sacred landscape associated with water deities and spirits.
Local beliefs consider mountains, rivers and lakes as spiritually important components of the natural environment.
Such cultural traditions can contribute to conservation by discouraging destructive exploitation and maintaining community respect for sensitive ecosystems.
Conservation Challenges
The lake remains relatively remote, but increasing tourism and infrastructure development can create new pressures.
Major concerns include:
- waste generation;
- disturbance of wildlife;
- unregulated tourism;
- damage to vegetation and trekking routes;
- climate-related changes in rainfall and temperature;
- possible introduction of invasive species;
- pressure on freshwater ecosystems.
Conservation requires:
- regulated eco-tourism;
- scientific monitoring of water quality and biodiversity;
- protection of surrounding forests;
- involvement of local Mishmi communities;
- limits on environmentally damaging infrastructure;
- preservation of the lake’s natural hydrological regime.
Conclusion
Glaw Lake is an ecologically and culturally significant high-altitude wetland of Arunachal Pradesh. Its recognition as India’s 101st Ramsar Site highlights the growing importance of conserving lesser-known Himalayan wetlands through scientific management and community participation.
