IdahoReservoir, 6,190 acres, Fremont County
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12.89ft
Steady 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: SSE wind 2 to 7 kt, gusts to 16 kt, high near 44°F, 53% chance of rain. Tuesday: SSW wind 6 to 15 kt, gusts to 20 kt, high near 35°F, 51% chance of rain.
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.
12.89ft (gage datum)
+0.08 ft in 7 days2.28 ft below the October normal
Reading from Oct 26, 2026. Shaded band: range of October averages on record; dashed line is the typical level.
Henrys Lake was at 12.89 ft on the gage on October 26, holding steady over the past week (+0.08 ft). That is below normal for October: the typical October level is 15.17 ft, so the lake is 2.28 ft below its usual mark.
Background reading: Henrys Lake on Wikipedia
Henrys Lake covers about 6,190 acres in Fremont County, Idaho and is classed as a reservoir. The water surface sits about 6,479 ft above sea level.
We read the level from USGS gauge 13039000, listed as Henrys Lake near Lake ID. 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.
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. At about 6,479 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 2 to 7 kt, gusts to 16 kt, high near 44°F, 53% 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.
Henrys Lake was at 12.89 ft on the gage on October 26, holding steady over the past week (+0.08 ft). That is below normal for October: the typical October level is 15.17 ft, so the lake is 2.28 ft below its usual mark.
Henrys Lake covers about 6,190 acres (9.7 square miles) of surface water.
If Henrys is blown out, these are the closest alternatives. Tap through for their conditions.