Cauvery delta watershed (10°16' to 11°30'N; 78°45' to 79°51' E) is an ancient delta located in the eastern middle region of Tamil Nadu state, India, bordering Bay of Bengal on the eastern side. This delta is the tail end region of the Cauvery basin.
It is the granary of this state with rich culture, architecture, arts and fine arts. But due to the recent water crisis, the farmers of this delta are migrating to industrial towns to seek their livelihood security as ‘water refugees’. The emerging water management
trends in this watershed suggest that it could be possible to improve the present water resources to about 272 TMC (7.70 km3) from 5TMC (0.14 km3) and supply 1,458 m3 per capita water per annum. Rainwater harvesting and artificial groundwater recharge approaches
are likely to play a bigger role in providing sufficient quantity of water to this watershed.
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