WashingtonReservoir, 1,011 acres, King County
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1,719.63ft
Down 2.37 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: WNW wind 1 to 4 kt, gusts to 3 kt, high near 44°F. Tuesday: SW wind 3 to 8 kt, gusts to 10 kt, high near 42°F, 93% 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.
1,719.63ft NGVD29
-2.37 ft in 7 days18.52 ft below the October normal
Reading from Oct 26, 2026. Shaded band: range of October averages on record; dashed line is the typical level.
South Fork Tolt Reservoir was at 1,719.63 ft on October 26, falling 2.37 ft over the past week. That is well below normal for October: the typical October level is 1,738.15 ft, so the lake is 18.52 ft below its usual mark.
South Fork Tolt Reservoir is a 1,011-acre reservoir in King County, Washington.
Water level on this page comes from USGS gauge 12147900 (South Fork Tolt Reservoir near Carnation, WA). 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: WNW wind 1 to 4 kt, gusts to 3 kt, high near 44°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.
South Fork Tolt Reservoir was at 1,719.63 ft on October 26, falling 2.37 ft over the past week. That is well below normal for October: the typical October level is 1,738.15 ft, so the lake is 18.52 ft below its usual mark.
South Fork Tolt Reservoir covers about 1,011 acres (1.6 square miles) of surface water.
If South Fork Tolt is blown out, these are the closest alternatives. Tap through for their conditions.