Analysis Of Glacial Lake And Basinal Topographic Dynamics And Associated Hazards In Brahmaputra Basin, The Water Tower Of India

India has 20 river basins, 12 major and 8 medium and small, with 1869 b.c.m of annual water resource potential. River basins have unequal water resources. Brahmaputra and Barak rivers provide 586 bcm of India's 1869 bcm annual water resource potential (which is roughly 32% of the total potential). These 'Water Tower of India' contains one-third of India's water. Brahmaputra basin, which covers India's NE, has the most water per person. The region has over 13000 cu.m./year per capita, well above Falkenmark's 1700 cu.m. Above the national average of 1544 cu. m.

Region has most hydropower potential. Only 3% of the NER's 31,857 MW hydropower potential has been used for human purposes (Brahmaputra Board, 2000), compared to 16% nationally. The NE's hydropower potential is 80% in Arunachal Pradesh (32 percent of the national potential).

The Indian government proposed 162 new hydroelectric projects in 16 states, 62 of which are in the Northeast. Most rivers are interstate. This water resource's sustainability is important for population and biodiversity. High-altitude glacial lakes can unleash fury downstream.

These Indian water bodies pose many dangers to the region's ethnic tribes. Between 1990 and 2009, climate change increased glacial lake area in the eastern Himalaya. Only China, Nepal, Pakistan, and Bhutan have recorded more than 50 glacial lake outbursts in the HKH.

Arunachal Pradesh has 1600 high-altitude lakes. 60 hydropower projects downstream of glacial lakes have been commissioned or proposed.

This study maps the glacial lakes of Arunachal Himalaya from the 1980s to the present and examines their dynamism. Morphometric and morphotectonic analysis is used to study the basin's response to flash floods and other hydrometeorological hazards. The interesting results obtained out of glacial lakes dynamics study and the morphometry/morphotectonic analysis of the Brahmaputra basins will be presented in the conference, which is completed new and unreported.