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

 |  End of River Group

GUADALUPE RIVER - SAN JOSE AT ALMADEN EXPRESSWAY (GUDC1)
Latitude: 37.28º NLongitude: 121.88º WElevation: 150 Feet
Location: Santa Clara County in CaliforniaBulletin Group: Central CoastRiver Group: South Bay
Monitor Stage: 7.5 FeetFlood Stage: 9.5 Feet

Observed Data Credit
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Raw streamflow data is provided by the Santa Clara Valley Water District.
View SCVWD Data for this station location.

Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2022*
1,510
6.14
Dec 24, 2022
2021*
1,480
6.09
Jan 27, 2021
2020*
687
4.45
Nov 26, 2019
2019*
3,220
9.15
Jan 16, 2019
2018*
632
4.31
Jan 9, 2018
 Historical High Stage/Flow Events (Period of Record - Jan 1975 to Present) - Ranked by Flow
1995*
8,470
11.73
Jan 09, 1995
1999*
6,780
10.50
Dec 3, 1998
 * Discharge affected by regulation or diversion
Location Photographs
ESRI™ Locator Map
Impacts - E19 Information
7.5 FeetAdditional flow from Canoas Creek watershed or increased reservoir spills may bring river to flood stage.
9.5 FeetRiver begins to overtop upstream of Alma Avenue bridge into the Elk's Lodge, spilling north.
11.5 FeetRiver continues to overtop upstream of Alma Avenue bridge into the Elk's Lodge, spillilng north along Lelong Street. Alma Avenue/CA-87 Viaduct is flooded. Creek overbanks west near Minnesota Avenue downstream of Alma Avenue. Properties south of the old UPRR alignment in the northern Cross neighborhood are also at risk. Thousand Oaks Park is also at risk of flooding.
11.73 FeetHistorical high water mark, January 1995.
14.0 FeetFlooding continues to spill near Alma Avenue, flowing northward and crossing under Willow Street and Alma Avenue Viaducts, continuing to flow north. Overbanking occurs at Atlanta Avenue just upstream of CA-87. The Willow Glen neighborhood bounded by Willow Street and Minnesota Avenue see overland flooding. Overbanking occurs in various locations between Alma Avenue and Willow Glen Way. Potential flooding on Ross and Canoas Creeks due to high backwater caused by Guadalupe River.
15.5 FeetWashington/Guadalupe, Tamien and Alma/Almaden neighborhoods east of CA-87 inundated from floodwaters traveling under street viaducts from the west. Widespread flooding in the eastern Willow Glen neighborhood, as well as the Gardner and Atlanta/Bird neighborhoods. CA-87/I-280 interchange at risk from overland flow spilling on the roadway. Possible overtopping of the Guadalupe River between Branham and Capitol, mainly on the east side with water flowing through streets. Areas along Thousand Oaks Park and near Capitol Expressway at risk of overbanking. If flood is sustained or increasing, car dealerships along Capitol Expressway are inundated. The Thousand Oaks neighborhood experiences significant street flooding and overtopping occurs near Branham Lane, as well as flooding businesses and the Erickson neighborhood. Potential flooding on Ross and Canoas Creeks due to high backwater caused by the Guadalupe River.
Official 7 Day National Weather Service Forecast   (CAZ513)
Rest of Tonight: Mostly cloudy. A chance of showers. Lows in the lower 40s. East winds around 5 mph.

Sunday: Mostly cloudy. A chance of showers. Highs in the mid 50s. Southeast winds 5 to 10 mph and becoming west 10 to 15 mph in the afternoon.

Sunday Night: Mostly cloudy. A chance of showers in the evening. Lows in the lower 40s. Northwest winds 5 to 10 mph and Becoming east after midnight.

Monday: Mostly cloudy. Highs around 60. South winds around 5 mph.

Monday Night: Mostly cloudy. A slight chance of showers in the evening, then a chance of rain after midnight. Lows in the mid 40s. South winds 5 to 10 mph. Chance of precipitation 30 percent.

Tuesday: Mostly cloudy. A chance of rain. Highs in the lower 60s.

Tuesday Night and Wednesday: Mostly cloudy. A chance of rain. Lows in the upper 40s. Highs in the lower 60s.

Wednesday Night: Partly cloudy. Lows in the lower 40s.

Thursday through Friday: Mostly clear. Highs in the mid 60s. Lows in the lower 40s.

Friday Night: Mostly clear in the evening then becoming partly cloudy. Lows in the mid 40s.

Saturday: Mostly cloudy. A slight chance of rain. Highs in the mid 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.