GUADALUPE RIVER - SAN JOSE AT ALMADEN EXPRESSWAY (GUDC1)
Latitude: 37.28º N
Longitude: 121.88º W
Elevation: 150 Feet
Location: Santa Clara County in California
Bulletin Group: Central Coast
River Group: South Bay
Issuance Time:
Dec 08 2023 at 7:25 AM PST
Next Issuance:
Dec 08 2023 at 3:00 PM PST
Monitor Stage: 7.5 Feet
Flood Stage: 9.5 Feet
Please Note: 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.
Additional flow from Canoas Creek watershed or increased reservoir spills may bring river to flood stage.
9.5 Feet
River begins to overtop upstream of Alma Avenue bridge into the Elk's Lodge, spilling north.
11.5 Feet
River 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 Feet
Historical high water mark, January 1995.
14.0 Feet
Flooding 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 Feet
Washington/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)
Today: Partly cloudy in the morning then becoming sunny. Highs around 60. Northwest winds 5 to 15 mph.
Tonight: Mostly clear. Areas of frost after midnight. Lows in the mid 30s to lower 40s. Northwest winds 5 to 10 mph.
Saturday: Sunny. Highs in the lower 60s. Northwest winds 5 to 10 mph.
Saturday Night: Partly cloudy. Lows in the upper 30s. Northeast winds around 5 mph.
Sunday: Partly cloudy in the morning then becoming mostly cloudy. Highs in the upper 60s. Northeast winds around 5 mph and Becoming north in the afternoon.
Sunday Night: Mostly cloudy in the evening then becoming partly cloudy. Lows in the lower 40s.
Monday: Partly cloudy in the morning then becoming sunny. Highs in the upper 60s.
Monday Night through Wednesday: Mostly clear. Lows in the lower 40s. Highs in the upper 60s.
Wednesday Night and Thursday: Partly cloudy. Lows in the lower 40s. Highs in the upper 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.