CaliforniaReservoir, 703 acres, Alameda County
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685.35ft
Down 0.19 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: WSW wind 4 to 10 kt, gusts to 18 kt, high near 59°F. Tuesday: W wind 4 to 8 kt, gusts to 16 kt, high near 57°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.
685.35ft NGVD29
-0.19 ft in 7 days12.00 ft below the October normal
Reading from Oct 26, 2026. Shaded band: range of October averages on record; dashed line is the typical level.
Lake Del Valle was at 685.35 ft on October 26, falling 0.19 ft over the past week. That is well below normal for October: the typical October level is 697.35 ft, so the lake is 12.00 ft below its usual mark.
Background reading: Lake Del Valle on Wikipedia
Set in Alameda County, California, Lake Del Valle is a 703-acre reservoir.
Water level on this page comes from the U.S. Army Corps of Engineers reading at Del Valle 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.
On water this size, waves stay small even on windy days. The catch is gusts: shoreline terrain funnels the wind into sharp puffs that catch out small boats and paddlers. 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: WSW wind 4 to 10 kt, gusts to 18 kt, high near 59°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.
Lake Del Valle was at 685.35 ft on October 26, falling 0.19 ft over the past week. That is well below normal for October: the typical October level is 697.35 ft, so the lake is 12.00 ft below its usual mark.
Lake Del Valle covers about 703 acres (1.1 square miles) of surface water.
If Del Valle is blown out, these are the closest alternatives. Tap through for their conditions.