Amid heavy rain, water level in Kerala’s Idukki reservoir rises by over 6 ft in a single day
Heavy rainfall in Kerala's Idukki district has caused a significant rise in water levels across several reservoirs. While storage levels have increased, they remain lower than the figures recorded on the same date last year.
Why it matters
Monitoring reservoir levels is critical for flood management and hydroelectric power generation in the region during the monsoon season.
Torrential rain in the catchment areas of the hilly district of Idukki has resulted in a sudden increase in the water levels across its reservoirs. The water level in the Idukki reservoir rose by over 6 feet in a single day. As of 1:00 p.m. on Saturday (August 1, 2026), the water level stood at 2,336.04 ft, compared to 2,330.90 ft at 7:00 a.m. on Friday.
The water level, however, is 36.84 ft lower than on this day last year. It was 2372.88 ft (69.82%) on August 1, 2025.
A Kerala State Electricity Board (KSEB) dam safety official stated that the catchment area recorded 154.4 mm of rainfall over the last 24 hours. On Wednesday, the storage in the Idukki reservoir was at 29%, but by Saturday, it jumped to 35.13%.
“The heavy showers resulted in a sudden increase in the reservoir’s storage,” the official said.
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