As of July 30, 2026, the reservoirs we track across Karnataka that report live levels hold roughly 12,384 hm³ of water — about 61.5% of their combined capacity. Taken together, Karnataka's reservoirs are within their normal operating range.

Across the region, 1 reservoir is at critically low levels and 7 are low. Harangi Dam is the fullest at 94.6%, while Tattihalla is the lowest at 8.0%.

Over the most recent week on record, 11 reservoirs rose across Karnataka.

Storage figures for Karnataka come from CWC; the most recent reading is from July 30, 2026. Each reservoir below links to its own page with full history and seasonal context.

Karnataka at a glance

Reservoirs tracked: 18
Average fill: 61.5%
Water stored: 12,384 hm³
Combined capacity: 20,131 hm³
At critically low levels: 1
Fullest: Harangi Dam (94.6%)
Lowest: Tattihalla (8.0%)
Last updated: July 30, 2026

Frequently asked questions

How full are reservoirs in Karnataka right now?

As of July 30, 2026, the reservoirs tracked in Karnataka that report live levels are 61.5% full overall, holding about 12,384 hm³ of water.

How many reservoirs are there in Karnataka?

reservoirs.earth tracks 18 reservoirs in Karnataka, with a combined storage capacity of 20,131 hm³.

Which reservoir in Karnataka is the fullest?

Harangi Dam is currently the fullest reservoir in Karnataka, at 94.6% of capacity.

Which reservoir in Karnataka is the lowest?

Tattihalla is currently the lowest in Karnataka, at 8.0% of capacity.

Where does the reservoir data for Karnataka come from?

All storage figures for Karnataka come from CWC, an official source, last updated July 30, 2026.

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