Cauvery River Fish Deaths: Stagnant Water, Low Oxygen Suspected
Thousands of dead fish have been found in isolated pools of water near the Amma Mandapam bathing ghat on the Cauvery River in Tiruchirapalli district, Tamil Nadu. The incident has raised concerns about water quality and river health amid a prolonged dry spell and reduced flow from the Mettur Dam.
According to local authorities, the fish began washing ashore three days ago. Stagnant pools have formed in several stretches of the river after the Mettur Dam reduced its release due to poor storage levels. Currently, only a minimal quantity of water is being discharged to meet drinking water requirements, leaving riverbeds exposed in many areas.
Residents near the bathing ghat reported a foul smell emanating from the decomposing fish. The Tiruchirapalli City Corporation deployed workers to remove the dead fish and dispose of them safely to prevent potential health hazards.
Officials from the Tamil Nadu Pollution Control Board and the Fisheries Department inspected the site on [date]. Preliminary assessments suggest two possible causes: the discharge of untreated effluents into the river, or a sharp drop in dissolved oxygen levels due to high temperatures and low water volume. Water samples from the affected area have been collected and sent to a laboratory for analysis. Results are expected within a week.
This is not the first such incident in the Cauvery. In recent years, similar fish kills have been reported during summer months when water flow is minimal. Environmental activists have repeatedly called for better management of river flows and stricter regulation of industrial and domestic waste discharge.
The Cauvery River, which flows through Karnataka and Tamil Nadu, is a critical water source for agriculture, drinking water, and industry. Its health is closely linked to the monsoon rains and the operation of dams such as Mettur, which stores water for the delta region.
Local fishermen have expressed concern about the impact on their livelihoods. “When the river dries up and fish die, we have no income. We depend on the river for everything,” said [Name], a fisherman from the area.
The district administration has assured that steps will be taken to prevent further deaths once the exact cause is determined. Meanwhile, residents are advised to avoid using water from the affected stretch for drinking or bathing until further notice.
