Mettur dam fills to capacity for third time in 2025, triggering flood warning

Chennai: Tamil Nadu’s Mettur Dam reached its full capacity of 120 feet on Sunday for the third time in 2025, following continuous heavy rainfall in the Western Ghats and adjoining catchment areas. The rising inflow has prompted authorities to increase water discharge from 22,500 to 31,000 cusecs to regulate the water level and safeguard the dam’s structure.

The Water Resources Department confirmed the discharge adjustment was made to prevent overflow, as the dam continues to receive substantial inflows. The situation has brought relief to farmers in the Cauvery delta region, with the abundant water expected to boost kharif season agricultural activities in the coming weeks.

However, the increase in discharge has also triggered flood warnings across low-lying areas along the Cauvery river. District administrations have urged residents in vulnerable regions to stay alert, as local officials continue to monitor the situation closely.

The Mettur Dam, also known as the Stanley Reservoir, is a key component of Tamil Nadu’s irrigation system and plays a vital role in managing the Cauvery river water for agricultural use across several districts.

Officials from the Revenue and Disaster Management Department are maintaining high alert status, coordinating with local bodies to ensure preparedness for any emergency, including evacuation or relief measures. Public access to the dam and nearby riverbanks has been temporarily restricted for safety reasons.

This marks the third time the dam has reached full capacity this year, with previous instances recorded in January and June, reflecting the intensity and consistency of the current monsoon. Authorities have urged the public to adhere to safety advisories and remain cautious as rainfall continues across the region.