Water level
6,529.82ft NGVD29
-0.08 ft in 7 daysReading from Oct 26, 2026.
Hebgen Lake was at 6,529.82 ft on October 26, holding steady over the past week (-0.08 ft).
MontanaReservoir, 12,407 acres, Gallatin County

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6,529.82ft
Steady this week
Sailing
CheckingReading the forecast
Kayak and SUP
CheckingReading the forecast
Power boating
CheckingReading the forecast
Fishing
CheckingReading the forecast
Outlook. Monday: SSE wind 4 to 8 kt, gusts to 17 kt, high near 43°F. Tuesday: SSW wind 5 to 8 kt, gusts to 18 kt, high near 35°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.
6,529.82ft NGVD29
-0.08 ft in 7 daysReading from Oct 26, 2026.
Hebgen Lake was at 6,529.82 ft on October 26, holding steady over the past week (-0.08 ft).
Background reading: Hebgen Lake on Wikipedia
Hebgen Lake is a 12,407-acre reservoir in Gallatin County, Montana. The water surface sits about 6,539 ft above sea level.
We read the level from USGS gauge 06038000, listed as Hebgen Lake near West Yellowstone, MT. Wind and weather come from the National Weather Service grid cell over the lake, so the numbers describe open water rather than the nearest airport.
On a lake this size the wind has miles of open water to work with, so a 15 kt breeze can stack up a steep chop in the main basin while sheltered coves stay flat. At about 6,539 ft, summer afternoons often bring building wind and quick thunderstorms, and the water stays cold well into the season. 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: SSE wind 4 to 8 kt, gusts to 17 kt, high near 43°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.
Hebgen Lake was at 6,529.82 ft on October 26, holding steady over the past week (-0.08 ft).
Hebgen Lake covers about 12,407 acres (19 square miles) of surface water.
If Hebgen is blown out, these are the closest alternatives. Tap through for their conditions.