Keystone Lake
Source: U.S. Army Corps of Engineers (CWMS Data API)
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Level history
Field notes
As of Oct 25, 2026, Keystone Lake stood at 725.18 (NGVD29) ft.
The lake is 2.18 ft above its conservation pool elevation of 723.00 ft, meaning water is being held in flood storage.
Over the past 7 days the lake has been rising (+2.00 ft), and it is +4.04 ft over 30 days.
Compared with a year ago (724.36 ft), the lake is 0.82 ft higher.
Readings are the hourly pool elevation the U.S. Army Corps of Engineers publishes for NULL (SWT); changes compare readings at the same hour.
The Corps' flood-control pool runs from 723.00 ft up to 754.00 ft, so about 7% of that flood space is in use (our calculation from USACE levels).
Lake facts
| Gauge / station | NULL (SWT) |
|---|---|
| Elevation datum | ft (NGVD29) |
| Gauge location | 36.1506, -96.2525 |
Reference levels
| Level · source | Elevation | Today vs level |
|---|---|---|
| Top of conservation pool USACE “Top of Conservation” | 723.00 ft | +2.18 ft |
| Top of flood-control pool USACE “Top of Flood” | 754.00 ft | −28.82 ft |
| Top of inactive pool (minimum) USACE “Top of Inactive” | 706.00 ft | +19.18 ft |
| Pool of record (highest) USACE “Pool of Record” | 757.20 ft set 2019 | −32.02 ft |
| Top of dam USACE “Top of Dam” | 771.00 ft | −45.82 ft |
Only levels the agency publishes, or that we compute directly from its own records, are listed. “Today vs level” = latest reading minus the reference level. A level the source does not publish is left out rather than estimated.
Nearby lakes
Common questions
How full is Keystone Lake right now?
The Corps feed we use gives pool elevation, not percent full. On Oct 25, 2026 the lake was at 725.18 ft, 2.18 ft above the top of conservation pool of 723.00 ft.
How high can Keystone Lake go before flood storage is full?
The U.S. Army Corps of Engineers lists the top of the flood-control pool at 754.00 ft; the highest pool on record is 757.20 ft (2019).
What is full pool at Keystone Lake?
The conservation (full) pool elevation published by the U.S. Army Corps of Engineers is 723.00 ft. The lake is currently 2.18 ft above it.
Is Keystone Lake rising or falling?
Over the last 7 days it changed +2.00 ft and over 30 days +4.04 ft.
How often is this page updated?
The page is rebuilt automatically every day from USACE's published data. Values can be revised later by the source agency.
Where does the data come from?
The U.S. Army Corps of Engineers' public CWMS Data API (cwms-data.usace.army.mil), which publishes pool elevations and the project's reference levels. Forecasts come from the National Weather Service.
Hourly pool elevation published by the U.S. Army Corps of Engineers; 7-day, 30-day and year-ago changes compare readings at the same hour. USACE data are provisional and subject to revision. This page is not affiliated with or endorsed by the U.S. Army Corps of Engineers. See data sources.