Foss Reservoir Water Level
Oklahoma · Washita River
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Water level history
About Foss Reservoir
Foss Reservoir is a reservoir on the Washita River in Oklahoma, operated by U.S. Bureau of Reclamation. It's the largest lake in western Oklahoma. Its full summer pool sits at 1642 ft above sea level. Live water levels come from the U.S. Army Corps of Engineers (CWMS) and update hourly.
Understanding Foss Reservoir's water level
"Full pool" is the elevation U.S. Bureau of Reclamation targets when Foss Reservoir is completely filled — 1642 feet above sea level. U.S. Bureau of Reclamation operates Foss Reservoir mainly for water supply and irrigation, holding it near 1642 ft; the level drifts down through dry spells and the irrigation season and refills when rain returns, rather than following a flood-control schedule.
Foss Reservoir rises after wet weather and falls through drought and the summer irrigation season, so a low reading usually reflects dry conditions across the basin rather than a fixed seasonal drawdown. A wet spring refills it; a dry year can leave it low well into the next season.
The recent high and low above are drawn from the published history available for Foss Reservoir, so they show how today compares over that record rather than an all-time extreme. The 12-month and 5-year chart views make the trend and the lake's usual seasonal shape easy to see.
Foss Reservoir — frequently asked
What is the current water level of Foss Reservoir?
The gauge at the top of this page shows Foss Reservoir's current elevation in feet above sea level, updated from the U.S. Army Corps of Engineers (CWMS).
What is full pool for Foss Reservoir?
Foss Reservoir's full summer pool is 1642 feet above sea level. Levels are typically drawn down below that in winter for flood storage.
Who manages Foss Reservoir?
Foss Reservoir is operated by U.S. Bureau of Reclamation on the Washita River.
Where is Foss Reservoir located?
Foss Reservoir is in Oklahoma, on the Washita River.
Why is Foss Reservoir low right now?
Reservoir levels fall during dry spells and seasonal drawdown — when U.S. Bureau of Reclamation lowers the pool for flood storage, power, or water supply — and recover after rain and snowmelt. The history chart above shows the recent trend.
What are the record high and low levels for Foss Reservoir?
The recent record high and low elevations are shown in the stats on this page, computed from the available published history for Foss Reservoir.
Other lakes near Foss Reservoir
- Lake Altus-LugertOK
- Arcadia LakeOK
- Broken Bow LakeOK
- Canton LakeOK
- Lake EufaulaOK
- Fort Cobb ReservoirOK
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