South DakotaNatural lake, 1,926 acres, Marshall County
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Sailing
CheckingReading the forecast
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Outlook. Monday: ENE wind 9 to 12 kt, gusts to 21 kt, high near 39°F, 100% chance of rain. Tuesday: SSW wind 4 to 10 kt, gusts to 20 kt, high near 48°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.
Roy Lake is a 1,926-acre natural lake in Marshall County, South Dakota.
We have not matched Roy 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.
Mid-sized lakes like this one tend to have shifty, gusty wind near shore and steadier pressure in the middle, which is why gust spread matters as much as average speed.
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 9 to 12 kt, gusts to 21 kt, high near 39°F, 100% 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 Roy 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.
Roy Lake covers about 1,926 acres (3.0 square miles) of surface water.
If Roy is blown out, these are the closest alternatives. Tap through for their conditions.