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

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ALAMEDA CREEK - ABOVE DIVERSION DAM (MPTC1)
Latitude: 37.50º NLongitude: 121.77º WElevation: 930 Feet
Location: Alameda County in CaliforniaBulletin Group: Central CoastRiver Group: South Bay
Issuance Time: May 05 2025 at 7:35 AM PDTNext Issuance: May 06 2025 at 9:00 AM PDT
Action/Monitor: N/A Minor Flood: 6.0 FeetModerate Flood: 8.5 FeetMajor Flood: N/A

Please Note:
1) Each individual timeseries plotted on the graphical river forecast can be toggled on and off by clicking the legend entry above. If the "Observed (Raw Data)" contains bad data and is toggled off, the plot will scale to the remaining timeseries.

2) At extremely low river flows, the "Observed (Raw Data)" may show readings below the lower end of the available rating table, while the "Observed (Simulated)" will only show values at the bottom of the rating table, creating a potential discrepancy between the two readings.
Observed Data Credit
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Raw streamflow data is provided by the US Geological Survey (USGS).
View US Geological Survey (USGS) Data for this station location.

Verification - Historical Graphical RVF
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To view other verification locations, use our Historical Graphical River Forecast Interface.
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ515)
Today: Sunny. Highs in the upper 70s. Northwest winds 10 to 15 mph.

Tonight: Clear. Lows around 50. Southwest winds 10 to 15 mph.

Wednesday: Sunny. Highs in the lower 70s. Southwest winds around 10 mph.

Wednesday Night: Mostly clear. Lows in the upper 40s. Southwest winds 10 to 15 mph.

Thursday: Partly cloudy in the morning then becoming sunny. Highs in the upper 70s. West winds 5 to 10 mph.

Thursday Night: Partly cloudy in the evening then becoming mostly clear. Lows in the lower 50s.

Friday: Sunny. Highs in the mid 80s.

Friday Night and Saturday: Mostly clear. Lows in the mid 50s. Highs in the lower 80s.

Saturday Night: Mostly clear in the evening then becoming partly cloudy. Lows in the lower 50s.

Sunday and Sunday Night: Mostly clear. Highs in the upper 60s. Lows in the upper 40s.

Monday: Partly cloudy in the morning then becoming sunny. Highs in the lower 60s.
Product Disclaimer

This river graphic is not intended to serve as a substitute for official flood watches, warnings, advisories, or statements issued by the NWS San Francisco Bay Area-Monterey Weather Forecast Office. Observations are preliminary and subject to change. River levels identified as "forecast" should be consistent with those contained in official NWS products. River levels identified as "guidance" have significant uncertainty due to future weather or reservoir regulation and are provided for planning purposes only.