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 CaliforniaRiver Group: Central Coast
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
2019*
3,220
9.15
Jan 16, 2019
2018*
632
4.31
Jan 9, 2018
2017*
1,701
6.45
Feb 7, 2017
2016*
892
4.96
Mar 5, 2016
2015*
--
--
--
 Historical High Stage/Flow Events (Period of Record - Jan 1975 to Present)
1999*
6,780
10.50
Dec 3, 1998
1995*
8,470
11.73
Jan 09, 1995
 * Discharge affected by regulation or diversion
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ513)
Today: Partly cloudy in the morning then becoming sunny. Highs in the upper 70s to mid 80s. Southeast winds around 5 mph and Becoming northwest in the afternoon.

Tonight: Mostly clear in the evening then becoming partly cloudy. Lows in the mid 50s. Northwest winds 5 to 10 mph in the evening and becoming light.

Friday: Partly cloudy in the morning then becoming sunny. Highs in the lower to mid 80s. South winds around 5 mph.

Friday Night: Mostly clear. Lows in the upper 50s. Southwest winds 5 to 10 mph in the evening and becoming light.

Saturday: Partly cloudy in the morning then becoming sunny. Highs in the mid 80s to lower 90s. Light winds and becoming west around 5 mph in the afternoon.

Saturday Night: Mostly clear. Lows in the upper 50s.

Sunday through Tuesday Night: Mostly clear. Highs in the 80s to lower 90s. Lows in the upper 50s.

Wednesday: Partly cloudy in the morning then becoming sunny. Highs in the 80s.
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.
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.