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

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ARROYO HONDO - SAN JOSE (AHOC1)
Latitude: 37.46º NLongitude: 121.77º WElevation: 784 Feet
Location: Santa Clara County in CaliforniaBulletin Group: Central CoastRiver Group: South Bay
Issuance Time: Jan 12 2026 at 7:04 AM PSTNext Issuance: Jan 12 2026 at 3:00 PM PST
Action/Monitor: N/A Minor Flood: N/A Moderate Flood: N/A Major 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   (CAZ514)
Today: Sunny. Highs around 60. East winds around 5 mph.

Tonight: Clear. Lows in the upper 30s to lower 50s. Southeast winds around 5 mph.

Tuesday: Sunny. Highs in the mid 60s. East winds around 5 mph and Becoming north in the afternoon.

Tuesday Night: Clear. Lows in the 30s to upper 40s. Light winds and becoming north around 5 mph after midnight.

Wednesday: Sunny. Highs in the lower 60s. North winds around 5 mph.

Wednesday Night: Clear. Lows in the 40s.

Thursday through Friday: Clear. Highs in the lower 60s. Lows in the 40s.

Friday Night: Mostly clear. Lows in the 40s.

Saturday: Sunny. Highs in the lower 60s.

Saturday Night: Partly cloudy. Lows in the 40s.

Sunday: Sunny in the morning then becoming partly cloudy. 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.