Water storage in two of Chennai's primary reservoirs has fallen sharply, leading to renewed demands for desilting to recover lost capacity [1].
This decline threatens the city's water security as officials and activists seek to maximize storage volume before the upcoming monsoon season. Without adequate capacity, the city risks failing to capture sufficient rainfall to meet growing urban demand.
Recent data shows that the Red Hills reservoir is currently at 51% of its capacity [1]. Meanwhile, the Poondi reservoir has dropped further, sitting at 34% of its capacity [1]. These figures have sparked concern among local residents and water authorities regarding the city's long-term resilience.
Activists and residents are now urging authorities to prioritize desilting operations. Desilting involves removing the accumulation of sediment and mud from the reservoir beds, a process that physically increases the volume of water the basins can hold.
Water authorities are facing pressure to accelerate these works. The accumulation of silt over time reduces the effective depth of the reservoirs, meaning that even during periods of heavy rain, the basins cannot store as much water as they were originally designed to hold [1].
Local stakeholders said that restoring this capacity is essential for stabilizing the water supply. The focus on desilting returns as a critical infrastructure priority to prevent future shortages in the Tamil Nadu capital.
“Red Hills reservoir water level is 51% of its capacity”
The drop in reservoir levels highlights a systemic vulnerability in Chennai's water management. By focusing on desilting, the city is attempting to shift from reactive crisis management to proactive capacity restoration, ensuring that the infrastructure can actually hold the water the region receives during peak rainfall.
