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GUADALUPE RIVER - SAN JOSE AT US HIGHWAY 101 (GSJC1)
Latitude:
37.37º N
Longitude:
121.93º W
Elevation:
72 Feet
Location: Santa Clara County in CA
River Group: Central Coast
Forecast Issued: Apr 06 2026 at 1:10 PM PDT
Next Issuance: Apr 07 2026 at 9:00 AM PDT

Action/
Monitor:
17.0 Ft
Minor
Flood:
18.5 Ft
Moderate
Flood:
19.5 Ft
Major
Flood:
21.0 Ft

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Showing Observations.  Click image for fcst.
Graphical River Forecast - GUADALUPE RIVER - SAN JOSE AT US HIGHWAY 101 (GSJC1)Graphical River Forecast - GUADALUPE RIVER - SAN JOSE AT US HIGHWAY 101 (GSJC1)

Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2017*
6,340
15.38
Feb 21, 2017
2016*
1,920
11.06
Mar 7, 2016
2015*
5,380
14.24
Dec 12, 2014
2014*
2,310
11.58
Feb 28, 2014
2013*
3,160
12.66
Dec 23, 2012
 Historical High Stage/Flow Events (Period of Record - May 2002 to Present) - Ranked by Flow
2017*
6,340
15.38
Feb 21, 2017
2003*
6,070
14.64
Dec 16, 2002
2008*
4,640
13.40
Jan 04, 2008
 * Discharge affected by regulation or diversion

Location Photographs

ESRI™ Locator Map

Flood Impacts
21.0 FeetMajor Flooding: Levee overtopping, with failures likely along both sides of the river between US-101 and Trimble flowing in a northerly direction.
20.0 FeetModerate Flooding: Levee overtopping imminent. Highest risk areas are between US-101 and Trimble.
19.0 FeetMinor Flooding: High flows with heavy debris might cause localized blockages to cause overtopping of levees.
17.0 FeetAction Stage: 7256 cfs