Truman Lake Water Level
Missouri · Osage River
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Water level history
About Truman Lake
Truman Lake is a reservoir on the Osage River in Missouri, operated by U.S. Army Corps of Engineers. Its full summer pool sits at 706 ft above sea level. Live water levels come from Ameren's official Bagnell Dam / Osage reports and reflect the latest reported level.
Understanding Truman Lake's water level
"Full pool" is the elevation U.S. Army Corps of Engineers targets when Truman Lake is completely filled — 706 feet above sea level. Above that line the Corps deliberately keeps empty "flood storage" to absorb heavy rain, so the lake rarely sits far above 706 ft for long. A reading a few feet under full is usually just the normal operating band rather than a sign of drought.
In a typical year the Corps keeps Truman Lake lower over winter for flood storage and lets it fill for the summer recreation season. Levels can jump several feet after a single big storm and are drawn down again once the high water passes.
The recent high and low above are drawn from the published history available for Truman Lake, 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.
Truman Lake — frequently asked
What is the current water level of Truman Lake?
The gauge at the top of this page shows Truman Lake's current elevation in feet above sea level, updated from Ameren's official Bagnell Dam / Osage reports.
What is full pool for Truman Lake?
Truman Lake's full summer pool is 706 feet above sea level. Levels are typically drawn down below that in winter for flood storage.
Who manages Truman Lake?
Truman Lake is operated by U.S. Army Corps of Engineers on the Osage River.
Where is Truman Lake located?
Truman Lake is in Missouri, on the Osage River.
Why is Truman Lake low right now?
Reservoir levels fall during dry spells and seasonal drawdown — when U.S. Army Corps of Engineers lowers the pool for flood storage, power, or water supply — and recover after rain and snowmelt. The history chart above shows the recent trend.
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