WashingtonReservoir, 3,281 acres, Chelan County, Douglas County
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612.09ft
Up 0.20 ft this week
Sailing
CheckingReading the forecast
Kayak and SUP
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Power boating
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Fishing
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Outlook. Monday: NW wind 0 to 3 kt, gusts to 5 kt, high near 57°F. Tuesday: W wind 4 to 8 kt, gusts to 16 kt, high near 58°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.
612.09ft above sea level
+0.20 ft in 7 days0.54 ft below the October normal
Reading from Oct 25, 2026. Shaded band: range of October averages on record; dashed line is the typical level.
Rock Island Pool was at 612.09 ft on October 25, rising 0.20 ft over the past week. That is below normal for October: the typical October level is 612.63 ft, so the lake is 0.54 ft below its usual mark.
Background reading: Rock Island Pool on Wikipedia
Rock Island Pool covers about 3,281 acres in Chelan County, Douglas County, Washington and is classed as a reservoir. The reservoir dates to 1930. The water surface sits about 617 ft above sea level.
Water level on this page comes from the U.S. Army Corps of Engineers reading at Rock Island Dam, published through the Corps' CWMS data service. 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. 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: NW wind 0 to 3 kt, gusts to 5 kt, high near 57°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.
Rock Island Pool was at 612.09 ft on October 25, rising 0.20 ft over the past week. That is below normal for October: the typical October level is 612.63 ft, so the lake is 0.54 ft below its usual mark.
Rock Island Pool covers about 3,281 acres (5.1 square miles) of surface water.
The dam that forms Rock Island Pool was completed in 1930.
If Rock Island Pool is blown out, these are the closest alternatives. Tap through for their conditions.