Storage from official US gauges (USGS, USACE, Bureau of Reclamation, CDEC). Fill % uses design capacity from the National Inventory of Dams where available; a few sites without a match fall back to the 5-year maximum.

About reservoirs in Oregon

As of June 11, 2026, the reservoirs we track across Oregon that report live levels hold roughly 1,273 hm³ of water — about 43.7% of their combined capacity. Taken together, Oregon's reservoirs are within their normal operating range.

Across the region, 2 reservoirs are at critically low levels and 3 are low. Crane Prairie Reservoir and Dam (CRA) is the fullest at 90.0%, while Clear Lake and Wasco Dam (WAS) is the lowest at 8.3%.

Storage figures for Oregon come from USGS · USACE · BOR · CDEC; the most recent reading is from June 11, 2026. Each reservoir below links to its own page with full history and seasonal context.

Oregon at a glance

Reservoirs tracked: 23
Average fill: 43.7%
Water stored: 1,273 hm³
Combined capacity: 2,912 hm³
At critically low levels: 2
Fullest: Crane Prairie Reservoir and Dam (CRA) (90.0%)
Lowest: Clear Lake and Wasco Dam (WAS) (8.3%)
Last updated: June 11, 2026

Frequently asked questions

How full are reservoirs in Oregon right now?

As of June 11, 2026, the reservoirs tracked in Oregon that report live levels are 43.7% full overall, holding about 1,273 hm³ of water.

How many reservoirs are there in Oregon?

reservoirs.earth tracks 23 reservoirs in Oregon, with a combined storage capacity of 2,912 hm³.

Which reservoir in Oregon is the fullest?

Crane Prairie Reservoir and Dam (CRA) is currently the fullest reservoir in Oregon, at 90.0% of capacity.

Which reservoir in Oregon is the lowest?

Clear Lake and Wasco Dam (WAS) is currently the lowest in Oregon, at 8.3% of capacity.

Where does the reservoir data for Oregon come from?

All storage figures for Oregon come from USGS · USACE · BOR · CDEC, an official source, last updated June 11, 2026.

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