South DakotaNatural lake, 2,467 acres, Walworth County
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Sailing
CheckingReading the forecast
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Fishing
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Outlook. Monday: ENE wind 11 to 13 kt, gusts to 22 kt, high near 37°F, 97% chance of rain. Tuesday: SSE wind 4 to 14 kt, gusts to 22 kt, high near 50°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.
Swan Lake is a 2,467-acre natural lake in Walworth County, South Dakota.
We have not matched Swan Lake 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.
It is big enough for a proper sail but small enough that waves rarely get serious. Gusts off the shoreline are usually the bigger story than wave height.
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: ENE wind 11 to 13 kt, gusts to 22 kt, high near 37°F, 97% chance of rain. 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 Swan Lake 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.
Swan Lake covers about 2,467 acres (3.9 square miles) of surface water.
If Swan is blown out, these are the closest alternatives. Tap through for their conditions.