National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

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GUADALUPE RIVER - SAN JOSE AT US HIGHWAY 101 (GSJC1)
Latitude: 37.37º NLongitude: 121.93º WElevation: 72 FeetForecast Type: Unofficial Location
Location: Santa Clara County in CaliforniaBulletin Group: Central CoastRiver Group: South Bay
Issuance Time: Apr 10 2026 at 1:47 PM PDTNext Issuance: Apr 11 2026 at 9:00 AM PDT
Action/Monitor: 17.0 FeetMinor Flood: 18.5 FeetModerate Flood: 19.5 FeetMajor Flood: 21.0 Feet


# Tabular Observed and Forecast Hydrograph Information
#
# Location: Guadalupe River - San Jose at US Highway 101 (GSJC1)
#
# File Generation Time:  04/10/2026 at 01:49 PM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/10/2026 at 01:00 PM PDT
# Maximum Observed Stage:                       6.25 Feet
# Maximum Observed Flow:                        162 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/12/2026 at 12:00 AM PDT
# Maximum Forecast Stage:                       8.44 Feet
# Maximum Forecast Flow:                        759 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/05/2026 01 PM PDT            5.39             49                        Normal
  04/05/2026 02 PM PDT            5.39             49         0              Normal
  04/05/2026 03 PM PDT            5.39             49         0              Normal
  04/05/2026 04 PM PDT            5.39             49         0              Normal
  04/05/2026 05 PM PDT            5.39             49         0              Normal
  04/05/2026 06 PM PDT            5.39             49         0              Normal
  04/05/2026 07 PM PDT            5.38             48         -              Normal
  04/05/2026 08 PM PDT            5.38             48         0              Normal
  04/05/2026 09 PM PDT            5.38             48         0              Normal
  04/05/2026 10 PM PDT            5.38             48         0              Normal
  04/05/2026 11 PM PDT            5.38             48         0              Normal
  04/06/2026 12 AM PDT            5.38             48         0              Normal
  04/06/2026 01 AM PDT            5.38             48         0              Normal
  04/06/2026 02 AM PDT            5.38             48         0              Normal
  04/06/2026 03 AM PDT            5.37             47         -              Normal
  04/06/2026 04 AM PDT            5.37             47         0              Normal
  04/06/2026 05 AM PDT            5.37             47         0              Normal
  04/06/2026 06 AM PDT            5.38             48         +              Normal
  04/06/2026 07 AM PDT            5.37             47         -              Normal
  04/06/2026 08 AM PDT            5.37             47         0              Normal
  04/06/2026 09 AM PDT            5.38             48         +              Normal
  04/06/2026 10 AM PDT            5.38             48         0              Normal
  04/06/2026 11 AM PDT            5.38             48         0              Normal
  04/06/2026 12 PM PDT            5.39             49         +              Normal
  04/06/2026 01 PM PDT            5.39             49         0              Normal
  04/06/2026 02 PM PDT            5.38             48         -              Normal
  04/06/2026 03 PM PDT            5.39             49         +              Normal
  04/06/2026 04 PM PDT            5.39             49         0              Normal
  04/06/2026 05 PM PDT            5.38             48         -              Normal
  04/06/2026 06 PM PDT            5.37             47         -              Normal
  04/06/2026 07 PM PDT            5.37             47         0              Normal
  04/06/2026 08 PM PDT            5.37             47         0              Normal
  04/06/2026 09 PM PDT            5.37             47         0              Normal
  04/06/2026 10 PM PDT            5.37             47         0              Normal
  04/06/2026 11 PM PDT            5.37             47         0              Normal
  04/07/2026 12 AM PDT            5.37             47         0              Normal
  04/07/2026 01 AM PDT            5.38             48         +              Normal
  04/07/2026 02 AM PDT            5.37             47         -              Normal
  04/07/2026 03 AM PDT            5.37             47         0              Normal
  04/07/2026 04 AM PDT            5.37             47         0              Normal
  04/07/2026 05 AM PDT            5.37             47         0              Normal
  04/07/2026 06 AM PDT            5.37             47         0              Normal
  04/07/2026 07 AM PDT            5.37             47         0              Normal
  04/07/2026 08 AM PDT            5.37             47         0              Normal
  04/07/2026 09 AM PDT            5.37             47         0              Normal
  04/07/2026 10 AM PDT            5.38             48         +              Normal
  04/07/2026 11 AM PDT            5.38             48         0              Normal
  04/07/2026 12 PM PDT            5.38             48         0              Normal
  04/07/2026 01 PM PDT            5.38             48         0              Normal
  04/07/2026 02 PM PDT            5.39             49         +              Normal
  04/07/2026 03 PM PDT            5.40             50         +              Normal
  04/07/2026 04 PM PDT            5.42             52         +              Normal
  04/07/2026 05 PM PDT            5.40             50         -              Normal
  04/07/2026 06 PM PDT            5.39             49         -              Normal
  04/07/2026 07 PM PDT            5.39             49         0              Normal
  04/07/2026 08 PM PDT            5.38             48         -              Normal
  04/07/2026 09 PM PDT            5.38             48         0              Normal
  04/07/2026 10 PM PDT            5.38             48         0              Normal
  04/07/2026 11 PM PDT            5.37             47         -              Normal
  04/08/2026 12 AM PDT            5.38             48         +              Normal
  04/08/2026 01 AM PDT            5.38             48         0              Normal
  04/08/2026 02 AM PDT            5.37             47         -              Normal
  04/08/2026 03 AM PDT            5.38             48         +              Normal
  04/08/2026 04 AM PDT            5.38             48         0              Normal
  04/08/2026 05 AM PDT            5.37             47         -              Normal
  04/08/2026 06 AM PDT            5.38             48         +              Normal
  04/08/2026 07 AM PDT            5.38             48         0              Normal
  04/08/2026 08 AM PDT            5.38             48         0              Normal
  04/08/2026 09 AM PDT            5.38             48         0              Normal
  04/08/2026 10 AM PDT            5.38             48         0              Normal
  04/08/2026 11 AM PDT            5.38             48         0              Normal
  04/08/2026 12 PM PDT            5.38             48         0              Normal
  04/08/2026 01 PM PDT            5.38             48         0              Normal
  04/08/2026 02 PM PDT            5.38             48         0              Normal
  04/08/2026 03 PM PDT            5.38             48         0              Normal
  04/08/2026 04 PM PDT            5.38             48         0              Normal
  04/08/2026 05 PM PDT            5.38             48         0              Normal
  04/08/2026 06 PM PDT            5.38             48         0              Normal
  04/08/2026 07 PM PDT            5.38             48         0              Normal
  04/08/2026 08 PM PDT            5.38             48         0              Normal
  04/08/2026 09 PM PDT            5.38             48         0              Normal
  04/08/2026 10 PM PDT            5.37             47         -              Normal
  04/08/2026 11 PM PDT            5.38             48         +              Normal
  04/09/2026 12 AM PDT            5.37             47         -              Normal
  04/09/2026 01 AM PDT            5.38             48         +              Normal
  04/09/2026 02 AM PDT            5.37             47         -              Normal
  04/09/2026 03 AM PDT            5.38             48         +              Normal
  04/09/2026 04 AM PDT            5.37             47         -              Normal
  04/09/2026 05 AM PDT            5.38             48         +              Normal
  04/09/2026 06 AM PDT            5.37             47         -              Normal
  04/09/2026 07 AM PDT            5.37             47         0              Normal
  04/09/2026 08 AM PDT            5.38             48         +              Normal
  04/09/2026 09 AM PDT            5.37             47         -              Normal
  04/09/2026 10 AM PDT            5.38             48         +              Normal
  04/09/2026 11 AM PDT            5.38             48         0              Normal
  04/09/2026 12 PM PDT            5.38             48         0              Normal
  04/09/2026 01 PM PDT            5.38             48         0              Normal
  04/09/2026 02 PM PDT            5.37             47         -              Normal
  04/09/2026 03 PM PDT            5.37             47         0              Normal
  04/09/2026 04 PM PDT            5.37             47         0              Normal
  04/09/2026 05 PM PDT            5.37             47         0              Normal
  04/09/2026 06 PM PDT            5.37             47         0              Normal
  04/09/2026 07 PM PDT            5.36             46         -              Normal
  04/09/2026 08 PM PDT            5.36             46         0              Normal
  04/09/2026 09 PM PDT            5.36             46         0              Normal
  04/09/2026 10 PM PDT            5.36             46         0              Normal
  04/09/2026 11 PM PDT            5.36             46         0              Normal
  04/10/2026 12 AM PDT            5.36             46         0              Normal
  04/10/2026 01 AM PDT            5.36             46         0              Normal
  04/10/2026 02 AM PDT            5.37             47         +              Normal
  04/10/2026 03 AM PDT            5.36             46         -              Normal
  04/10/2026 04 AM PDT            5.37             47         +              Normal
  04/10/2026 05 AM PDT            5.36             46         -              Normal
  04/10/2026 06 AM PDT            5.36             46         0              Normal
  04/10/2026 07 AM PDT            5.37             47         +              Normal
  04/10/2026 08 AM PDT            5.37             47         0              Normal
  04/10/2026 09 AM PDT            5.54             64         +              Normal
  04/10/2026 10 AM PDT            5.61             72         +              Normal
  04/10/2026 11 AM PDT            5.74             88         +              Normal
  04/10/2026 12 PM PDT            5.92            111         +              Normal
  04/10/2026 01 PM PDT            6.25            162         +              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/10/2026 02 PM PDT            6.44            195                        Normal
  04/10/2026 03 PM PDT            6.51            208         +              Normal
  04/10/2026 04 PM PDT            6.46            199         -              Normal
  04/10/2026 05 PM PDT            6.31            172         -              Normal
  04/10/2026 06 PM PDT            6.08            134         -              Normal
  04/10/2026 07 PM PDT            5.82             98         -              Normal
  04/10/2026 08 PM PDT            5.62             73         -              Normal
  04/10/2026 09 PM PDT            5.50             60         -              Normal
  04/10/2026 10 PM PDT            5.43             53         -              Normal
  04/10/2026 11 PM PDT            5.42             52         -              Normal
  04/11/2026 12 AM PDT            5.48             58         +              Normal
  04/11/2026 01 AM PDT            5.56             67         +              Normal
  04/11/2026 02 AM PDT            5.62             73         +              Normal
  04/11/2026 03 AM PDT            5.64             76         +              Normal
  04/11/2026 04 AM PDT            5.67             79         +              Normal
  04/11/2026 05 AM PDT            5.71             84         +              Normal
  04/11/2026 06 AM PDT            5.72             85         +              Normal
  04/11/2026 07 AM PDT            5.66             78         -              Normal
  04/11/2026 08 AM PDT            5.60             71         -              Normal
  04/11/2026 09 AM PDT            5.54             64         -              Normal
  04/11/2026 10 AM PDT            5.51             61         -              Normal
  04/11/2026 11 AM PDT            5.51             61         0              Normal
  04/11/2026 12 PM PDT            5.55             65         +              Normal
  04/11/2026 01 PM PDT            5.65             77         +              Normal
  04/11/2026 02 PM PDT            5.76             90         +              Normal
  04/11/2026 03 PM PDT            5.86            103         +              Normal
  04/11/2026 04 PM PDT            5.93            113         +              Normal
  04/11/2026 05 PM PDT            5.92            111         -              Normal
  04/11/2026 06 PM PDT            5.85            102         -              Normal
  04/11/2026 07 PM PDT            5.76             90         -              Normal
  04/11/2026 08 PM PDT            5.73             86         -              Normal
  04/11/2026 09 PM PDT            5.86            103         +              Normal
  04/11/2026 10 PM PDT            6.81            271         +              Normal
  04/11/2026 11 PM PDT            7.95            586         +              Normal
  04/12/2026 12 AM PDT            8.44            759         +              Normal
  04/12/2026 01 AM PDT            8.23            682         -              Normal
  04/12/2026 02 AM PDT            7.92            576         -              Normal
  04/12/2026 03 AM PDT            7.69            503         -              Normal
  04/12/2026 04 AM PDT            7.59            473         -              Normal
  04/12/2026 05 AM PDT            7.49            444         -              Normal
  04/12/2026 06 AM PDT            7.37            411         -              Normal
  04/12/2026 07 AM PDT            7.25            378         -              Normal
  04/12/2026 08 AM PDT            7.10            340         -              Normal
  04/12/2026 09 AM PDT            6.97            308         -              Normal
  04/12/2026 10 AM PDT            6.87            285         -              Normal
  04/12/2026 11 AM PDT            6.78            265         -              Normal
  04/12/2026 12 PM PDT            6.70            247         -              Normal
  04/12/2026 01 PM PDT            6.61            228         -              Normal
  04/12/2026 02 PM PDT            6.53            212         -              Normal
  04/12/2026 03 PM PDT            6.45            197         -              Normal
  04/12/2026 04 PM PDT            6.40            188         -              Normal
  04/12/2026 05 PM PDT            6.37            182         -              Normal
  04/12/2026 06 PM PDT            6.35            179         -              Normal
  04/12/2026 07 PM PDT            6.33            175         -              Normal
  04/12/2026 08 PM PDT            6.28            167         -              Normal
  04/12/2026 09 PM PDT            6.20            153         -              Normal
  04/12/2026 10 PM PDT            6.08            134         -              Normal
  04/12/2026 11 PM PDT            5.94            114         -              Normal
  04/13/2026 12 AM PDT            5.81             96         -              Normal
  04/13/2026 01 AM PDT            5.70             83         -              Normal
  04/13/2026 02 AM PDT            5.61             72         -              Normal
  04/13/2026 03 AM PDT            5.54             64         -              Normal
  04/13/2026 04 AM PDT            5.47             57         -              Normal
  04/13/2026 05 AM PDT            5.42             52         -              Normal
  04/13/2026 06 AM PDT            5.37             47         -              Normal
  04/13/2026 07 AM PDT            5.34             45         -              Normal
  04/13/2026 08 AM PDT            5.32             43         -              Normal
  04/13/2026 09 AM PDT            5.30             41         -              Normal
  04/13/2026 10 AM PDT            5.29             40         -              Normal
  04/13/2026 11 AM PDT            5.28             39         -              Normal
  04/13/2026 12 PM PDT            5.27             38         -              Normal
  04/13/2026 01 PM PDT            5.26             38         -              Normal
  04/13/2026 02 PM PDT            5.26             38         0              Normal
  04/13/2026 03 PM PDT            5.25             37         -              Normal
  04/13/2026 04 PM PDT            5.25             37         0              Normal
  04/13/2026 05 PM PDT            5.25             37         0              Normal
  04/13/2026 06 PM PDT            5.25             37         0              Normal
  04/13/2026 07 PM PDT            5.25             37         0              Normal
  04/13/2026 08 PM PDT            5.25             37         0              Normal
  04/13/2026 09 PM PDT            5.25             37         0              Normal
  04/13/2026 10 PM PDT            5.25             37         0              Normal
  04/13/2026 11 PM PDT            5.25             37         0              Normal
  04/14/2026 12 AM PDT            5.25             37         0              Normal
  04/14/2026 01 AM PDT            5.25             37         0              Normal
  04/14/2026 02 AM PDT            5.25             37         0              Normal
  04/14/2026 03 AM PDT            5.25             37         0              Normal
  04/14/2026 04 AM PDT            5.25             37         0              Normal
  04/14/2026 05 AM PDT            5.25             37         0              Normal
  04/14/2026 06 AM PDT            5.25             37         0              Normal
  04/14/2026 07 AM PDT            5.25             37         0              Normal
  04/14/2026 08 AM PDT            5.25             37         0              Normal
  04/14/2026 09 AM PDT            5.25             37         0              Normal
  04/14/2026 10 AM PDT            5.24             36         -              Normal
  04/14/2026 11 AM PDT            5.24             36         0              Normal
  04/14/2026 12 PM PDT            5.24             36         0              Normal
  04/14/2026 01 PM PDT            5.24             36         0              Normal
  04/14/2026 02 PM PDT            5.24             36         0              Normal
  04/14/2026 03 PM PDT            5.24             36         0              Normal
  04/14/2026 04 PM PDT            5.24             36         0              Normal
  04/14/2026 05 PM PDT            5.24             36         0              Normal
  04/14/2026 06 PM PDT            5.24             36         0              Normal
  04/14/2026 07 PM PDT            5.24             36         0              Normal
  04/14/2026 08 PM PDT            5.24             36         0              Normal
  04/14/2026 09 PM PDT            5.24             36         0              Normal
  04/14/2026 10 PM PDT            5.24             36         0              Normal
  04/14/2026 11 PM PDT            5.24             36         0              Normal
  04/15/2026 12 AM PDT            5.24             36         0              Normal
  04/15/2026 01 AM PDT            5.24             36         0              Normal
  04/15/2026 02 AM PDT            5.24             36         0              Normal
  04/15/2026 03 AM PDT            5.24             36         0              Normal
  04/15/2026 04 AM PDT            5.24             36         0              Normal
  04/15/2026 05 AM PDT            5.24             36         0              Normal
#
# NOTE 1: Stages are rounded to the nearest hundredth (.01) of a foot.
# NOTE 2: Flows are rounded to the nearest (1) cfs.
# NOTE 3: Trends are determined using hourly change in unrounded stage and flow.
# NOTE 4: Maximum Values are determined using unrounded stage and flow.