Kosasthalaiyar River, Major river system in Tamil Nadu, India
The Kosasthalaiyar River is a major river system in Tamil Nadu that flows roughly 136 kilometers from Pallipattu in Thiruvallur district to the Bay of Bengal at Ennore Creek. Nine check dams regulate its water flow, with major structures at Tamaraipakkam and Vallur controlling how water is released for irrigation channels.
The river has supported local agriculture and water supply since ancient settlements were established along its course. Its role in the region's development has remained central throughout the centuries.
Communities living near the river perform water ceremonies and hold seasonal festivals that mark the changing flow patterns throughout the year. These traditions show how deeply people are connected to the river's natural rhythm.
The river is most active during and after the monsoon season when water levels rise significantly. During drier months, the water level drops considerably, affecting access to different parts of the banks.
During monsoon season, the river can discharge over 50,000 cubic feet of water per second into the Bay of Bengal. This massive volume makes it a vital outlet for draining excess water from the region during heavy rainfall.
The community of curious travelers
AroundUs brings together thousands of curated places, local tips, and hidden gems, enriched daily by 60,000 contributors worldwide.
