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 07 2026 at 1:57 PM PDTNext Issuance: Apr 08 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:  04/07/2026 at 01:59 PM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/02/2026 at 04:00 PM PDT
# Maximum Observed Stage:                       5.54 Feet
# Maximum Observed Flow:                        64 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/11/2026 at 08:00 PM PDT
# Maximum Forecast Stage:                       6.47 Feet
# Maximum Forecast Flow:                        201 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/02/2026 01 PM PDT            5.51             61                        Normal
  04/02/2026 02 PM PDT            5.52             62         +              Normal
  04/02/2026 03 PM PDT            5.53             63         +              Normal
  04/02/2026 04 PM PDT            5.54             64         +              Normal
  04/02/2026 05 PM PDT            5.53             63         -              Normal
  04/02/2026 06 PM PDT            5.51             61         -              Normal
  04/02/2026 07 PM PDT            5.49             59         -              Normal
  04/02/2026 08 PM PDT            5.46             56         -              Normal
  04/02/2026 09 PM PDT            5.44             54         -              Normal
  04/02/2026 10 PM PDT            5.43             53         -              Normal
  04/02/2026 11 PM PDT            5.42             52         -              Normal
  04/03/2026 12 AM PDT            5.42             52         0              Normal
  04/03/2026 01 AM PDT            5.41             51         -              Normal
  04/03/2026 02 AM PDT            5.41             51         0              Normal
  04/03/2026 03 AM PDT            5.40             50         -              Normal
  04/03/2026 04 AM PDT            5.40             50         0              Normal
  04/03/2026 05 AM PDT            5.40             50         0              Normal
  04/03/2026 06 AM PDT            5.40             50         0              Normal
  04/03/2026 07 AM PDT            5.40             50         0              Normal
  04/03/2026 08 AM PDT            5.40             50         0              Normal
  04/03/2026 09 AM PDT            5.40             50         0              Normal
  04/03/2026 10 AM PDT            5.41             51         +              Normal
  04/03/2026 11 AM PDT            5.40             50         -              Normal
  04/03/2026 12 PM PDT            5.40             50         0              Normal
  04/03/2026 01 PM PDT            5.40             50         0              Normal
  04/03/2026 02 PM PDT            5.40             50         0              Normal
  04/03/2026 03 PM PDT            5.40             50         0              Normal
  04/03/2026 04 PM PDT            5.42             52         +              Normal
  04/03/2026 05 PM PDT            5.41             51         -              Normal
  04/03/2026 06 PM PDT            5.39             49         -              Normal
  04/03/2026 07 PM PDT            5.38             48         -              Normal
  04/03/2026 08 PM PDT            5.39             49         +              Normal
  04/03/2026 09 PM PDT            5.38             48         -              Normal
  04/03/2026 10 PM PDT            5.38             48         0              Normal
  04/03/2026 11 PM PDT            5.38             48         0              Normal
  04/04/2026 12 AM PDT            5.38             48         0              Normal
  04/04/2026 01 AM PDT            5.38             48         0              Normal
  04/04/2026 02 AM PDT            5.38             48         0              Normal
  04/04/2026 03 AM PDT            5.38             48         0              Normal
  04/04/2026 04 AM PDT            5.38             48         0              Normal
  04/04/2026 05 AM PDT            5.38             48         0              Normal
  04/04/2026 06 AM PDT            5.39             49         +              Normal
  04/04/2026 07 AM PDT            5.39             49         0              Normal
  04/04/2026 08 AM PDT            5.40             50         +              Normal
  04/04/2026 09 AM PDT            5.39             49         -              Normal
  04/04/2026 10 AM PDT            5.39             49         0              Normal
  04/04/2026 11 AM PDT            5.39             49         0              Normal
  04/04/2026 12 PM PDT            5.39             49         0              Normal
  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
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/07/2026 02 PM PDT            5.38             48                        Normal
  04/07/2026 03 PM PDT            5.38             48         0              Normal
  04/07/2026 04 PM PDT            5.38             48         0              Normal
  04/07/2026 05 PM PDT            5.38             48         0              Normal
  04/07/2026 06 PM PDT            5.38             48         0              Normal
  04/07/2026 07 PM PDT            5.38             48         0              Normal
  04/07/2026 08 PM PDT            5.38             48         0              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            5.38             48         0              Normal
  04/08/2026 12 AM PDT            5.38             48         0              Normal
  04/08/2026 01 AM PDT            5.38             48         0              Normal
  04/08/2026 02 AM PDT            5.38             48         0              Normal
  04/08/2026 03 AM PDT            5.38             48         0              Normal
  04/08/2026 04 AM PDT            5.38             48         0              Normal
  04/08/2026 05 AM PDT            5.38             48         0              Normal
  04/08/2026 06 AM PDT            5.38             48         0              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            5.38             48         0              Normal
  04/08/2026 11 PM PDT            5.38             48         0              Normal
  04/09/2026 12 AM PDT            5.38             48         0              Normal
  04/09/2026 01 AM PDT            5.38             48         0              Normal
  04/09/2026 02 AM PDT            5.38             48         0              Normal
  04/09/2026 03 AM PDT            5.38             48         0              Normal
  04/09/2026 04 AM PDT            5.38             48         0              Normal
  04/09/2026 05 AM PDT            5.38             48         0              Normal
  04/09/2026 06 AM PDT            5.38             48         0              Normal
  04/09/2026 07 AM PDT            5.38             48         0              Normal
  04/09/2026 08 AM PDT            5.38             48         0              Normal
  04/09/2026 09 AM PDT            5.38             48         0              Normal
  04/09/2026 10 AM PDT            5.38             48         0              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            5.38             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            5.40             50         +              Normal
  04/10/2026 04 AM PDT            5.45             55         +              Normal
  04/10/2026 05 AM PDT            5.52             62         +              Normal
  04/10/2026 06 AM PDT            5.59             70         +              Normal
  04/10/2026 07 AM PDT            5.65             77         +              Normal
  04/10/2026 08 AM PDT            5.69             81         +              Normal
  04/10/2026 09 AM PDT            5.75             89         +              Normal
  04/10/2026 10 AM PDT            5.84            100         +              Normal
  04/10/2026 11 AM PDT            5.96            117         +              Normal
  04/10/2026 12 PM PDT            6.06            131         +              Normal
  04/10/2026 01 PM PDT            6.14            144         +              Normal
  04/10/2026 02 PM PDT            6.20            153         +              Normal
  04/10/2026 03 PM PDT            6.24            160         +              Normal
  04/10/2026 04 PM PDT            6.28            167         +              Normal
  04/10/2026 05 PM PDT            6.32            174         +              Normal
  04/10/2026 06 PM PDT            6.36            181         +              Normal
  04/10/2026 07 PM PDT            6.39            186         +              Normal
  04/10/2026 08 PM PDT            6.41            190         +              Normal
  04/10/2026 09 PM PDT            6.39            186         -              Normal
  04/10/2026 10 PM PDT            6.31            172         -              Normal
  04/10/2026 11 PM PDT            6.19            152         -              Normal
  04/11/2026 12 AM PDT            6.05            130         -              Normal
  04/11/2026 01 AM PDT            5.92            111         -              Normal
  04/11/2026 02 AM PDT            5.83             99         -              Normal
  04/11/2026 03 AM PDT            5.76             90         -              Normal
  04/11/2026 04 AM PDT            5.72             85         -              Normal
  04/11/2026 05 AM PDT            5.69             81         -              Normal
  04/11/2026 06 AM PDT            5.67             79         -              Normal
  04/11/2026 07 AM PDT            5.66             78         -              Normal
  04/11/2026 08 AM PDT            5.65             77         -              Normal
  04/11/2026 09 AM PDT            5.65             77         0              Normal
  04/11/2026 10 AM PDT            5.65             77         0              Normal
  04/11/2026 11 AM PDT            5.65             77         0              Normal
  04/11/2026 12 PM PDT            5.64             76         -              Normal
  04/11/2026 01 PM PDT            5.64             76         0              Normal
  04/11/2026 02 PM PDT            5.65             77         +              Normal
  04/11/2026 03 PM PDT            5.71             84         +              Normal
  04/11/2026 04 PM PDT            5.87            104         +              Normal
  04/11/2026 05 PM PDT            6.08            134         +              Normal
  04/11/2026 06 PM PDT            6.26            163         +              Normal
  04/11/2026 07 PM PDT            6.39            186         +              Normal
  04/11/2026 08 PM PDT            6.47            201         +              Normal
  04/11/2026 09 PM PDT            6.47            201         0              Normal
  04/11/2026 10 PM PDT            6.41            190         -              Normal
  04/11/2026 11 PM PDT            6.28            167         -              Normal
  04/12/2026 12 AM PDT            6.14            144         -              Normal
  04/12/2026 01 AM PDT            6.01            124         -              Normal
  04/12/2026 02 AM PDT            5.91            110         -              Normal
  04/12/2026 03 AM PDT            5.84            100         -              Normal
  04/12/2026 04 AM PDT            5.79             94         -              Normal
  04/12/2026 05 AM PDT            5.74             88         -              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.