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Visit for access to new EXPERIMENTAL products and services from the National Water Center: National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook and the National Water Center Visualization Services, a suite of geospatial services depicting River Forecast Center and National Water Model information.

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Hydrograph River at a Glance Download
Sunnyvale East above Hwy 101 Stage (ft)SCVWD-Santa Clara Valley Water DistrictSYQC1(plotting HGIRG) Graph Created (1:15PM Jan 26, 2023)Flood Stage is 6.5 ft
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Tabular Data (UTC)
Tabular Data (PST)
XML Data
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Datum: Not Available
NOTE: Graphical forecasts are not available for the Sunnyvale East above Hwy 101. During times of high water, forecast crest information can be found in the text products.
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Flood Categories (in feet)
Major Flood Stage: 9.5
Moderate Flood Stage: 8
Flood Stage: 6.5
Action Stage: 6
Low Stage (in feet): -9999

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.
Zoom Level:16
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Gauge LocationGauge Map Marker
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 Collapse
If you notice any errors in the below information, please contact our Webmaster
9.6 Major Flooding...cont'...Flooding of businesses, homes and neighborhood strees occurs north of Evelyn Dr, extending north to Hwy 237, between Fair Oaks Ave to the west and Lawrence Exwy to the east. North of Hwy 237, flooding occurs on both sides of the channel, affecting Twin Creeks Ball Park and Baylands Park.
9.5 Major Flooding...Channel overtopping is possible upstream of Evelyn on the east bank, Wolfe Rd, along the east bank upstream of Duane, for a short reach on both banks between Tasman and US-101, and immediately upstream and downstream of Caribbean Dr, Flooding of major streets near the channel alignment, including Caribbean Dr, Tasman Dr, Fair Oaks Ave, Wolfe Rd, Ahwanee Ave, Evelyn Ave, Kifer Rd, and Central Expressway. Possible shallow sheet flow across Hwy 101.
8 Moderate Flooding: Levees immediately downstream and upstream of Caribbean Dr at risk of overtopping. Minimal flooding/poinding in Twin Creek Sports Complex and businesses south of Caribbean Dr. Area is also influenced by tides. Duane Ave to Wolfe Rd - east bank begins to overtop, causing localized ponding in the parking lot located east of the creek.
6.5 Minor Flooding: West levee begins to overtop immediately North of Caribbean Dr into drainage ditch.
6 Action Stage: Possible flooding to occur.
About This Location Collapse

Latitude: 37.394600° N, Longitude: 122.010400° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 6.5 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  
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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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