CaliforniaReservoir, 586 acres
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272.54ft
Up 0.44 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 4 to 15 kt, gusts to 22 kt, high near 64°F. Tuesday: WNW wind 9 to 16 kt, gusts to 24 kt, high near 61°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.
272.54ft NAVD88
+0.44 ft in 7 days8.09 ft below the October normal
Reading from Oct 25, 2026. Shaded band: range of October averages on record; dashed line is the typical level.
Lower Crystal Springs Reservoir was at 272.54 ft on October 25, rising 0.44 ft over the past week. That is below normal for October: the typical October level is 280.63 ft, so the lake is 8.09 ft below its usual mark.
Lower Crystal Springs Reservoir covers about 586 acres in California and is classed as a reservoir.
We read the level from USGS gauge 11162750, listed as Lower Crystal Springs Reservoir near San Mateo CA. 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.
Small lakes rarely build big waves, but trees and hills around the shore make the wind patchy. Expect sudden puffs and lulls rather than a steady breeze. 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 4 to 15 kt, gusts to 22 kt, high near 64°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.
Lower Crystal Springs Reservoir was at 272.54 ft on October 25, rising 0.44 ft over the past week. That is below normal for October: the typical October level is 280.63 ft, so the lake is 8.09 ft below its usual mark.
Lower Crystal Springs Reservoir covers about 586 acres (0.9 square miles) of surface water.
If Lower Crystal Springs is blown out, these are the closest alternatives. Tap through for their conditions.