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

 | 

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 09 2026 at 1:02 PM PDTNext Issuance: Apr 10 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:  04/09/2026 at 01:04 PM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/07/2026 at 04:00 PM PDT
# Maximum Observed Stage:                       5.42 Feet
# Maximum Observed Flow:                        52 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/12/2026 at 02:00 AM PDT
# Maximum Forecast Stage:                       7.61 Feet
# Maximum Forecast Flow:                        479 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/04/2026 01 PM PDT            5.40             50                        Normal
  04/04/2026 02 PM PDT            5.40             50         0              Normal
  04/04/2026 03 PM PDT            5.40             50         0              Normal
  04/04/2026 04 PM PDT            5.39             49         -              Normal
  04/04/2026 05 PM PDT            5.39             49         0              Normal
  04/04/2026 06 PM PDT            5.39             49         0              Normal
  04/04/2026 07 PM PDT            5.38             48         -              Normal
  04/04/2026 08 PM PDT            5.38             48         0              Normal
  04/04/2026 09 PM PDT            5.38             48         0              Normal
  04/04/2026 10 PM PDT            5.38             48         0              Normal
  04/04/2026 11 PM PDT            5.39             49         +              Normal
  04/05/2026 12 AM PDT            5.39             49         0              Normal
  04/05/2026 01 AM PDT            5.38             48         -              Normal
  04/05/2026 02 AM PDT            5.38             48         0              Normal
  04/05/2026 03 AM PDT            5.38             48         0              Normal
  04/05/2026 04 AM PDT            5.38             48         0              Normal
  04/05/2026 05 AM PDT            5.38             48         0              Normal
  04/05/2026 06 AM PDT            5.38             48         0              Normal
  04/05/2026 07 AM PDT            5.38             48         0              Normal
  04/05/2026 08 AM PDT            5.40             50         +              Normal
  04/05/2026 09 AM PDT            5.39             49         -              Normal
  04/05/2026 10 AM PDT            5.39             49         0              Normal
  04/05/2026 11 AM PDT            5.39             49         0              Normal
  04/05/2026 12 PM PDT            5.39             49         0              Normal
  04/05/2026 01 PM PDT            5.39             49         0              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
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/09/2026 01 PM PDT            5.38             48                        Normal
  04/09/2026 02 PM PDT            5.38             48         0              Normal
  04/09/2026 03 PM PDT            5.38             48         0              Normal
  04/09/2026 04 PM PDT            5.38             48         0              Normal
  04/09/2026 05 PM PDT            5.38             48         0              Normal
  04/09/2026 06 PM PDT            5.38             48         0              Normal
  04/09/2026 07 PM PDT            5.38             48         0              Normal
  04/09/2026 08 PM PDT            5.38             48         0              Normal
  04/09/2026 09 PM PDT            5.38             48         0              Normal
  04/09/2026 10 PM PDT            5.38             48         0              Normal
  04/09/2026 11 PM PDT            5.38             48         0              Normal
  04/10/2026 12 AM PDT            5.38             48         0              Normal
  04/10/2026 01 AM PDT            5.38             48         0              Normal
  04/10/2026 02 AM PDT            5.38             48         0              Normal
  04/10/2026 03 AM PDT            5.38             48         0              Normal
  04/10/2026 04 AM PDT            5.38             48         0              Normal
  04/10/2026 05 AM PDT            5.40             50         +              Normal
  04/10/2026 06 AM PDT            5.50             60         +              Normal
  04/10/2026 07 AM PDT            5.71             84         +              Normal
  04/10/2026 08 AM PDT            5.87            104         +              Normal
  04/10/2026 09 AM PDT            5.92            111         +              Normal
  04/10/2026 10 AM PDT            5.95            115         +              Normal
  04/10/2026 11 AM PDT            6.03            127         +              Normal
  04/10/2026 12 PM PDT            6.13            142         +              Normal
  04/10/2026 01 PM PDT            6.20            153         +              Normal
  04/10/2026 02 PM PDT            6.26            163         +              Normal
  04/10/2026 03 PM PDT            6.31            172         +              Normal
  04/10/2026 04 PM PDT            6.31            172         0              Normal
  04/10/2026 05 PM PDT            6.28            167         -              Normal
  04/10/2026 06 PM PDT            6.18            150         -              Normal
  04/10/2026 07 PM PDT            6.02            126         -              Normal
  04/10/2026 08 PM PDT            5.89            107         -              Normal
  04/10/2026 09 PM PDT            5.84            100         -              Normal
  04/10/2026 10 PM PDT            5.84            100         0              Normal
  04/10/2026 11 PM PDT            5.85            102         +              Normal
  04/11/2026 12 AM PDT            5.87            104         +              Normal
  04/11/2026 01 AM PDT            5.87            104         0              Normal
  04/11/2026 02 AM PDT            5.84            100         -              Normal
  04/11/2026 03 AM PDT            5.80             95         -              Normal
  04/11/2026 04 AM PDT            5.77             91         -              Normal
  04/11/2026 05 AM PDT            5.76             90         -              Normal
  04/11/2026 06 AM PDT            5.78             93         +              Normal
  04/11/2026 07 AM PDT            5.80             95         +              Normal
  04/11/2026 08 AM PDT            5.85            102         +              Normal
  04/11/2026 09 AM PDT            5.92            111         +              Normal
  04/11/2026 10 AM PDT            5.99            121         +              Normal
  04/11/2026 11 AM PDT            6.05            130         +              Normal
  04/11/2026 12 PM PDT            6.07            133         +              Normal
  04/11/2026 01 PM PDT            6.05            130         -              Normal
  04/11/2026 02 PM PDT            6.03            127         -              Normal
  04/11/2026 03 PM PDT            6.03            127         0              Normal
  04/11/2026 04 PM PDT            6.06            131         +              Normal
  04/11/2026 05 PM PDT            6.11            139         +              Normal
  04/11/2026 06 PM PDT            6.18            150         +              Normal
  04/11/2026 07 PM PDT            6.25            162         +              Normal
  04/11/2026 08 PM PDT            6.33            175         +              Normal
  04/11/2026 09 PM PDT            6.52            210         +              Normal
  04/11/2026 10 PM PDT            6.84            278         +              Normal
  04/11/2026 11 PM PDT            7.17            358         +              Normal
  04/12/2026 12 AM PDT            7.41            422         +              Normal
  04/12/2026 01 AM PDT            7.56            465         +              Normal
  04/12/2026 02 AM PDT            7.61            479         +              Normal
  04/12/2026 03 AM PDT            7.56            465         -              Normal
  04/12/2026 04 AM PDT            7.45            433         -              Normal
  04/12/2026 05 AM PDT            7.30            392         -              Normal
  04/12/2026 06 AM PDT            7.14            350         -              Normal
  04/12/2026 07 AM PDT            7.00            315         -              Normal
  04/12/2026 08 AM PDT            6.88            287         -              Normal
  04/12/2026 09 AM PDT            6.79            267         -              Normal
  04/12/2026 10 AM PDT            6.70            247         -              Normal
  04/12/2026 11 AM PDT            6.61            228         -              Normal
  04/12/2026 12 PM PDT            6.54            214         -              Normal
  04/12/2026 01 PM PDT            6.49            204         -              Normal
  04/12/2026 02 PM PDT            6.45            197         -              Normal
  04/12/2026 03 PM PDT            6.42            191         -              Normal
  04/12/2026 04 PM PDT            6.41            190         -              Normal
  04/12/2026 05 PM PDT            6.40            188         -              Normal
  04/12/2026 06 PM PDT            6.39            186         -              Normal
  04/12/2026 07 PM PDT            6.38            184         -              Normal
  04/12/2026 08 PM PDT            6.38            184         0              Normal
  04/12/2026 09 PM PDT            6.34            177         -              Normal
  04/12/2026 10 PM PDT            6.26            163         -              Normal
  04/12/2026 11 PM PDT            6.14            144         -              Normal
  04/13/2026 12 AM PDT            6.01            124         -              Normal
  04/13/2026 01 AM PDT            5.89            107         -              Normal
  04/13/2026 02 AM PDT            5.80             95         -              Normal
  04/13/2026 03 AM PDT            5.73             86         -              Normal
  04/13/2026 04 AM PDT            5.66             78         -              Normal
  04/13/2026 05 AM PDT            5.59             70         -              Normal
  04/13/2026 06 AM PDT            5.53             63         -              Normal
  04/13/2026 07 AM PDT            5.48             58         -              Normal
  04/13/2026 08 AM PDT            5.45             55         -              Normal
  04/13/2026 09 AM PDT            5.43             53         -              Normal
  04/13/2026 10 AM PDT            5.42             52         -              Normal
  04/13/2026 11 AM PDT            5.41             51         -              Normal
  04/13/2026 12 PM PDT            5.40             50         -              Normal
  04/13/2026 01 PM PDT            5.39             49         -              Normal
  04/13/2026 02 PM PDT            5.39             49         0              Normal
  04/13/2026 03 PM PDT            5.38             48         -              Normal
  04/13/2026 04 PM PDT            5.38             48         0              Normal
  04/13/2026 05 PM PDT            5.38             48         0              Normal
  04/13/2026 06 PM PDT            5.38             48         0              Normal
  04/13/2026 07 PM PDT            5.37             47         -              Normal
  04/13/2026 08 PM PDT            5.37             47         0              Normal
  04/13/2026 09 PM PDT            5.37             47         0              Normal
  04/13/2026 10 PM PDT            5.37             47         0              Normal
  04/13/2026 11 PM PDT            5.37             47         0              Normal
  04/14/2026 12 AM PDT            5.37             47         0              Normal
  04/14/2026 01 AM PDT            5.37             47         0              Normal
  04/14/2026 02 AM PDT            5.37             47         0              Normal
  04/14/2026 03 AM PDT            5.37             47         0              Normal
  04/14/2026 04 AM PDT            5.37             47         0              Normal
  04/14/2026 05 AM PDT            5.37             47         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.