National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service



ARROYO VALLE - DEL VALLE RESERVOIR (DVAC1)
Latitude: 37.61º NLongitude: 121.75º WElevation: 703 Feet
Location: Alameda County in CaliforniaBulletin Group: Central CoastRiver Group: South Bay
Issuance Time: Jun 30, 2025 at 12:11 PM PDT
Action/Monitor: N/A Minor Flood: N/A Moderate Flood: N/A Major Flood: N/A
Please Note:Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty.
Threshold Exceedance Plot                  Product Information        CSV Ensemble Files (Data in kcfs):  Forecast Group  |  DVAC1

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Verification / Historical Plots
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Official 7 Day National Weather Service Forecast   (CAZ515)
rest of Tonight: Mostly clear. Lows in the upper 50s. Southwest winds 15 to 20 mph.

Tuesday: Sunny. Highs in the upper 80s. Southwest winds 15 to 20 mph.

Tuesday Night: Mostly clear. Lows in the upper 50s. Southwest winds around 20 mph.

Wednesday: Sunny. Highs in the mid 80s. Southwest winds 15 to 20 mph.

Wednesday Night: Clear. Lows in the upper 50s. Southwest winds around 20 mph.

Thursday: Partly cloudy. Highs around 80.

Thursday Night through Friday Night: Mostly clear. Lows in the mid 50s. Highs in the mid 70s.

Saturday through Monday: Mostly clear. Highs around 80. Lows in the mid 50s.