Flathead-Columbia Basin

Basin: Reservoir Storage Across Montana

Status: 1 tracked reservoir holding 3.45M af combined

Current Levels

| Reservoir | Storage | As of | |-----------|---------|-------| | Hungry Horse Reservoir | 3.45M af | Jul 7, 2026 |

Series Data

Hungry Horse Reservoir: 3,447,730 af (362 historical points)

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Unit: acre-feet (af)

Last Updated: July 7, 2026

This page tracks surface water storage capacity in the Flathead-Columbia basin across Montana. Hungry Horse Reservoir is the primary reservoir monitored in this basin, currently operating at 3.45 million acre-feet of storage.