Idukki Reservoir Levels Surge as Heavy Rainfall Triggers Mudslides and Travel Bans

Emergency Infrastructure Measures and Highway Closures

Persistent heavy downpours throughout Sunday night and Monday morning have forced Idukki district authorities to implement emergency safety protocols. District Collector Dinesan Cheruvat issued an immediate travel ban on the Neriamangalam-Adimali stretch of the Kochi-Dhanushkodi National Highway following reports of mudslides and fallen trees. This major transit artery will remain closed to all traffic until the threat of further landslides subsides.

The administrative response extends to the local economy and public safety sectors, with a total ban on tourism activities across the district. All tourism centers are currently closed. Physical damage from the weather was reported at the Panchalimedu tourism center near Peermade, where a resort's retaining wall gave way on Sunday evening, crushing two parked vehicles.

Rising Water Levels and Hydropower Impact

Inflow into the region's reservoir system has increased significantly, prompting manual discharge from multiple dams. Operations currently underway include:

• Opening shutters at the Kallarkutty, Pambla, and Kallar dams to manage excess volume.
• Releasing water from five shutters at the Malankara Dam, with plans for further increases if thresholds are breached.
• Monitoring the Idukki Dam, the largest hydel power project in Kerala, which saw its water level climb over 13 feet in just 72 hours.

As of Monday morning, the Idukki reservoir recorded a level of 2,343.56 feet, representing 40.44% of its total capacity. Nearby, the Mullaperiyar dam water level reached 118.35 feet.