WyomingReservoir, 19,371 acres, Fremont County
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4,712.00ft
Up 0.69 ft this week
Sailing
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Kayak and SUP
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Power boating
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Fishing
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Outlook. Monday: S wind 3 to 7 kt, gusts to 11 kt, high near 53°F. Tuesday: SW wind 4 to 15 kt, gusts to 22 kt, high near 52°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.
4,712.00ft above sea level
+0.69 ft in 7 days7.43 ft below the October normal
Reading from Oct 26, 2026. Shaded band: range of October averages on record; dashed line is the typical level.
Boysen Reservoir was at 4,712.00 ft on October 26, rising 0.69 ft over the past week. That is well below normal for October: the typical October level is 4,719.43 ft, so the lake is 7.43 ft below its usual mark.
Background reading: Boysen Reservoir on Wikipedia
Set in Fremont County, Wyoming, Boysen Reservoir is a 19,371-acre reservoir. Its dam was completed in 1952, and the lake is operated by United States Bureau of Reclamation.
Water level on this page comes from the U.S. Army Corps of Engineers reading at Boysen Dam & Reservoir, published through the Corps' CWMS data service. Wind, gusts and rain come from the National Weather Service forecast grid that covers the water.
With this much open water, waves build quickly when the wind lines up with the long axis of the lake. Pick a launch on the upwind shore on breezy days and the ride home is easier. Reservoir levels move with releases and inflow, so ramps and beaches can change week to week. The water level page tracks that day by day.
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: S wind 3 to 7 kt, gusts to 11 kt, high near 53°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.
Boysen Reservoir was at 4,712.00 ft on October 26, rising 0.69 ft over the past week. That is well below normal for October: the typical October level is 4,719.43 ft, so the lake is 7.43 ft below its usual mark.
Boysen Reservoir covers about 19,371 acres (30 square miles) of surface water.
Boysen Reservoir is operated by United States Bureau of Reclamation. Boating rules, closures and ramp hours come from the operator and the state wildlife agency.
The dam that forms Boysen Reservoir was completed in 1952.
If Boysen is blown out, these are the closest alternatives. Tap through for their conditions.