MissouriReservoir, 444 acres, St. Charles County
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Sailing
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Outlook. Monday: SSW wind 2 to 4 kt, gusts to 7 kt, high near 76°F. Tuesday: S wind 3 to 6 kt, gusts to 10 kt, high near 75°F.
7-day wind forecastLoads when you scroll here
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Last hour of NOAA MRMS radar, 1 km resolution. Map data © OpenStreetMap contributors, OpenMapTiles, OpenFreeMap.
SatelliteLoading NASA SWOT passes
000.00ft above sea level
Measured from orbit by NASA's SWOT satellite each time it passes over the lake, usually every 10 to 21 days, to within about half a foot. Elevation is above sea level (EGM2008), not a gauge reading at a dock.
Lake Saint Louis is a 444-acre reservoir in St. Charles County, Missouri.
We have not matched Lake Saint Louis to a public level gauge, so the water level on this page comes from NASA's SWOT satellite, which measures the lake surface from orbit on each pass. Wind, gusts and rain come from the National Weather Service forecast grid that covers the water.
On water this size, waves stay small even on windy days. The catch is gusts: shoreline terrain funnels the wind into sharp puffs that catch out small boats and paddlers.
The go or no-go calls above are a starting point, not a guarantee. Read how we score conditions, and always check local rules and posted warnings before you launch.
The National Weather Service forecast for the lake from October 26: Monday: SSW wind 2 to 4 kt, gusts to 7 kt, high near 76°F. The panel at the top of this page refreshes the current wind, gusts and direction when you open it and turns them into a call for sailing, paddling, power boating and fishing.
We have not matched Lake Saint Louis to a public level gauge, so the water level card on this page uses NASA's SWOT satellite, which measures the lake surface every time it passes overhead, usually every 10 to 21 days. The card shows the latest pass, its date and the change since the pass before.
Lake Saint Louis covers about 444 acres (0.7 square miles) of surface water.
If Saint Louis is blown out, these are the closest alternatives. Tap through for their conditions.