National Weather Service Advanced Hydrologic Prediction Service

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This probabilistic forecast is issued by the California Nevada River Forecast Center.

	Hydrograph			River at a Glance			Download			Probability Information Chance of Exceeding Levels During Entire Period Not Available Weekly Chance of Exceeding Levels Not Available Short-term Probabilistic Guidance (Experimental)

For official forecast click here

Experimental Short Range Forecast Uncertainty (AHPS) - External Links: Product Description Document | Customer Survey

About this graph

Forecasts for the Guadalupe River (CA) above Almaden Expressway are issued routinely year-round.

Return to Area Map

Zoom Level:16

Flood Categories (in feet)

Major Flood Stage:	15
Moderate Flood Stage:	11.5
Flood Stage:	10.5
Action Stage:	9
Low Stage (in feet):	-9999

Historic Crests
(1) 11.73 ft on 01/09/1995
(2) 10.50 ft on 02/03/1998
(3) 9.64 ft on 03/10/1995
(4) 9.15 ft on 01/16/2019
(5) 9.03 ft on 01/24/1983
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 6.09 ft on 01/27/2021
(2) 4.45 ft on 11/26/2019
(3) 9.15 ft on 01/16/2019
(4) 4.31 ft on 01/09/2018
(5) 6.45 ft on 02/07/2017
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

	Gauge Location	Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.

Flood Impacts & Photos

If you notice any errors in the below information, please contact our Webmaster
17.01	Cont'...Possible overtopping of Guadalupe River near Capitol Expwy on the east side, flowing towards Pearl Ave. Additionally, possible overtopping near Thousand Oaks Park and upstream of Branham Lane flowing along streets flooding businesses and the Erickson Neighborhood. If flood is sustained or incresing, car dealerships along Capitol Expwy may be inundated as well. Potential flooding on Ross and Canoas Creeks due to high backwater caused by Guadalupe River.
17	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. CA87/I-280 interchange at risk from overland flow spilling onto the roadway.
15	Major Flood Stage. Flooding continues to spill near Alam Avenue, flowing northward and crossing east under Willow Street and Alma Avenue viaducts, continuing to flow north. Overbanking occurs at Atlanta Avenue just upstream of CA87. 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.
11.73	Historical High Water - January 1995
11.5	Moderate Flood Stage. River continues to overtop upstream of Alma Avenue Bridge into the Elks Lodge, spilling north along Lelong Street. Alma Avenue/CA87 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 also at risk.
10.5	Minor Flood Stage. River begins to overtop upstream of Alma Avenue Bridge into the Elks Lodge, spilling north, as well as near the RxR on the east bank.
9	Monitor Stage. Additional flow from Canoas Creek watershed or increased reservoir spills may bring river to flood stage.

Collaborative Agencies

The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.

NWS Information

National Weather Service
San Francisco Bay Area Weather Forecast Office
21 Grace Hopper Ave, Stop 5
Monterey, CA 93943-5505
(831) 656-1725
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Page last modified: 2-Nov-2020 7:27 PM

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