CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

ARROYO HONDO - SAN JOSE (AHOC1)

Latitude: 37.46º N	Longitude: 121.77º W	Elevation: 784 Feet
Location: Santa Clara County in California		Bulletin Group: Central Coast		River Group: South Bay

Issuance Time:

Dec 25 2025 at 2:02 PM PST

Next Issuance:

Dec 26 2025 at 9:00 AM PST

Action/Monitor: N/A

Minor Flood: N/A

Moderate Flood: N/A

Major Flood: N/A

Plot Type:

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
	Raw streamflow data is provided by the US Geological Survey (USGS). View US Geological Survey (USGS) Data for this station location.

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Official 7 Day National Weather Service Forecast (CAZ514)

Tonight: Showers and a slight chance of thunderstorms. Some thunderstorms may be severe with heavy rainfall. Lows near 40. Southwest winds 15 to 20 mph with gusts to around 35 mph.

Friday: A chance of showers in the morning, then showers likely in the afternoon. Highs in the upper 40s. South winds 15 to 20 mph and becoming 5 to 15 mph in the afternoon.

Friday Night: Mostly cloudy. A slight chance of thunderstorms in the evening. A chance of showers. Areas of frost after midnight. Some thunderstorms may produce heavy rainfall in the evening. Lows in the 30s to lower 40s. Southwest winds 5 to 10 mph.

Saturday: Partly cloudy. Areas of frost in the morning. A slight chance of showers in the morning. Highs in the upper 40s. Northwest winds 5 to 10 mph. Chance of showers 20 percent.

Saturday Night: Mostly clear. Areas of frost in the evening. Lows in the 20s to upper 30s. Northwest winds 5 to 10 mph.

Sunday: Sunny. Highs in the upper 40s.

Sunday Night: Clear. Widespread frost. Lows in the upper 20s to lower 40s.

Monday and Monday Night: Clear. Highs in the lower 50s. Lows in the 30s to lower 40s.

Tuesday through Wednesday: Mostly clear. Highs in the upper 50s. Lows in the 30s to mid 40s.

Wednesday Night: Partly cloudy. A slight chance of showers. Lows in the 30s to upper 40s.

New Years Day: Partly cloudy. A chance of showers. Highs in the mid 50s.

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.

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Verification - Historical Graphical RVF
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To view other verification locations, use our Historical Graphical River Forecast Interface.