Mullaperiyar dam water level hits 123 ft as heavy rains boost inflow to 1,782 cusecs
Synopsis
Key Takeaways
Heavy rainfall across the catchment areas of the Mullaperiyar dam has pushed the reservoir level to 123 feet, with water inflow surging to 1,782 cusecs — nearly three times the previous rate of 634 cusecs — bringing significant relief to drought-stressed farmers across five southern Tamil Nadu districts. The improvement, reported on 7 November 2026, follows weeks of declining storage and reduced water releases that had disrupted the ongoing agricultural season.
Current Reservoir Position
The dam currently holds 3,163 million cubic feet (mcft) of water, a marked improvement over recent weeks. The overnight rainfall surge in Kerala's catchment zones drove the sharp inflow spike, arresting what had been a sustained decline in storage levels. Authorities are closely monitoring inflow patterns as conditions remain contingent on continued rainfall.
How the Season Unravelled
The Mullaperiyar dam, situated in Kerala near the Tamil Nadu border, is the primary irrigation and drinking water source for Theni, Dindigul, Madurai, Sivaganga, and Ramanathapuram districts. This year, below-normal southwest monsoon rainfall severely disrupted the routine water schedule. The first paddy cultivation season water release, originally scheduled for 1 June, was delayed by more than two months and was eventually made on 8 August due to insufficient reservoir storage.
As inflow continued to disappoint through the monsoon months, authorities were forced to cut water discharge to Tamil Nadu from 800 cusecs to 400 cusecs in a bid to conserve available storage while meeting essential drinking water requirements. Thousands of farmers cultivating paddy and other crops across the five districts bore the brunt of these reductions.
Relief for Farmers, With Caveats
The recent improvement has rekindled hope among farming communities that had grown anxious about the viability of the ongoing agricultural season. Sustained inflow at current levels could stabilise irrigation supply and prevent further delays to crop cycles. However, officials caution that the situation remains entirely dependent on rainfall continuity in the upstream catchment areas — a factor outside administrative control.
Notably, this is not the first time the Mullaperiyar reservoir has experienced a late-season recovery; similar weather-dependent swings have characterised the dam's storage pattern in recent years, underscoring the structural vulnerability of an irrigation system serving millions in the Tamil Nadu hinterland.
What Authorities Are Watching
Dam management officials are expected to calibrate water releases carefully, balancing agricultural demand against the need to maintain adequate drinking water reserves. If the current wet weather conditions across Kerala persist, further improvement in storage is likely. Farmers in the five beneficiary districts remain cautiously optimistic, with the next few weeks of rainfall patterns in the catchment areas set to determine how the rest of the cultivation season unfolds.