Tamil Nadu's Mettur Dam to Release Water as Monsoon Delays Irrigation Season

Mettur Dam, a critical water source for Tamil Nadu's agricultural heartland, will begin its annual water release on September 1, 2026, Chief Minister C. Joseph Vijay announced. The opening marks the commencement of the state's main irrigation season, which supplies water to vast rice cultivation areas across the region.

The delayed release reflects this year's deficient monsoon rainfall, which has impacted water availability in the reservoir. Typically, the dam begins releasing water earlier in the season, but below-average precipitation has necessitated postponing the opening to September.

Mettur Dam serves as the primary water source for agricultural activities in Tamil Nadu's fertile plains, sustaining irrigation for thousands of farmers dependent on the supply. The annual water release is a significant event in the state's agricultural calendar, triggering the planting season for rice and other crops across the command area.

The timing of water releases from the dam directly influences crop planning and yields for farmers across the region. With the monsoon falling short of expectations, water management has become increasingly critical for ensuring adequate supply throughout the irrigation season.