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 13 2026 at 1:24 PM PDTNext Issuance: Apr 14 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:  04/13/2026 at 01:26 PM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/11/2026 at 11:00 PM PDT
# Maximum Observed Stage:                       8.46 Feet
# Maximum Observed Flow:                        767 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/13/2026 at 02:00 PM PDT
# Maximum Forecast Stage:                       5.49 Feet
# Maximum Forecast Flow:                        59 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/08/2026 01 PM PDT            5.38             48                        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            5.95            115         +              Normal
  04/10/2026 02 PM PDT            6.01            124         +              Normal
  04/10/2026 03 PM PDT            5.93            113         -              Normal
  04/10/2026 04 PM PDT            5.82             98         -              Normal
  04/10/2026 05 PM PDT            5.74             88         -              Normal
  04/10/2026 06 PM PDT            5.66             78         -              Normal
  04/10/2026 07 PM PDT            5.61             72         -              Normal
  04/10/2026 08 PM PDT            5.56             67         -              Normal
  04/10/2026 09 PM PDT            5.53             63         -              Normal
  04/10/2026 10 PM PDT            5.50             60         -              Normal
  04/10/2026 11 PM PDT            5.48             58         -              Normal
  04/11/2026 12 AM PDT            5.47             57         -              Normal
  04/11/2026 01 AM PDT            5.50             60         +              Normal
  04/11/2026 02 AM PDT            5.52             62         +              Normal
  04/11/2026 03 AM PDT            5.54             64         +              Normal
  04/11/2026 04 AM PDT            5.60             71         +              Normal
  04/11/2026 05 AM PDT            5.97            118         +              Normal
  04/11/2026 06 AM PDT            6.28            167         +              Normal
  04/11/2026 07 AM PDT            6.34            177         +              Normal
  04/11/2026 08 AM PDT            6.36            181         +              Normal
  04/11/2026 09 AM PDT            6.18            150         -              Normal
  04/11/2026 10 AM PDT            6.01            124         -              Normal
  04/11/2026 11 AM PDT            5.87            104         -              Normal
  04/11/2026 12 PM PDT            5.80             95         -              Normal
  04/11/2026 01 PM PDT            5.84            100         +              Normal
  04/11/2026 02 PM PDT            5.81             96         -              Normal
  04/11/2026 03 PM PDT            5.77             91         -              Normal
  04/11/2026 04 PM PDT            5.74             88         -              Normal
  04/11/2026 05 PM PDT            5.83             99         +              Normal
  04/11/2026 06 PM PDT            5.72             85         -              Normal
  04/11/2026 07 PM PDT            5.65             77         -              Normal
  04/11/2026 08 PM PDT            6.47            201         +              Normal
  04/11/2026 09 PM PDT            7.39            416         +              Normal
  04/11/2026 10 PM PDT            7.96            589         +              Normal
  04/11/2026 11 PM PDT            8.46            767         +              Normal
  04/12/2026 12 AM PDT            8.42            752         -              Normal
  04/12/2026 01 AM PDT            7.92            576         -              Normal
  04/12/2026 02 AM PDT            7.54            459         -              Normal
  04/12/2026 03 AM PDT            7.29            389         -              Normal
  04/12/2026 04 AM PDT            7.09            337         -              Normal
  04/12/2026 05 AM PDT            6.89            289         -              Normal
  04/12/2026 06 AM PDT            6.73            254         -              Normal
  04/12/2026 07 AM PDT            6.60            226         -              Normal
  04/12/2026 08 AM PDT            6.46            199         -              Normal
  04/12/2026 09 AM PDT            6.33            175         -              Normal
  04/12/2026 10 AM PDT            6.29            168         -              Normal
  04/12/2026 11 AM PDT            6.41            190         +              Normal
  04/12/2026 12 PM PDT            6.44            195         +              Normal
  04/12/2026 01 PM PDT            6.36            181         -              Normal
  04/12/2026 02 PM PDT            6.24            160         -              Normal
  04/12/2026 03 PM PDT            6.09            136         -              Normal
  04/12/2026 04 PM PDT            5.98            120         -              Normal
  04/12/2026 05 PM PDT            5.93            113         -              Normal
  04/12/2026 06 PM PDT            5.92            111         -              Normal
  04/12/2026 07 PM PDT            5.85            102         -              Normal
  04/12/2026 08 PM PDT            5.79             94         -              Normal
  04/12/2026 09 PM PDT            5.75             89         -              Normal
  04/12/2026 10 PM PDT            5.73             86         -              Normal
  04/12/2026 11 PM PDT            5.71             84         -              Normal
  04/13/2026 12 AM PDT            5.68             80         -              Normal
  04/13/2026 01 AM PDT            5.65             77         -              Normal
  04/13/2026 02 AM PDT            5.62             73         -              Normal
  04/13/2026 03 AM PDT            5.61             72         -              Normal
  04/13/2026 04 AM PDT            5.59             70         -              Normal
  04/13/2026 05 AM PDT            5.57             68         -              Normal
  04/13/2026 06 AM PDT            5.56             67         -              Normal
  04/13/2026 07 AM PDT            5.54             64         -              Normal
  04/13/2026 08 AM PDT            5.53             63         -              Normal
  04/13/2026 09 AM PDT            5.52             62         -              Normal
  04/13/2026 10 AM PDT            5.52             62         0              Normal
  04/13/2026 11 AM PDT            5.52             62         0              Normal
  04/13/2026 12 PM PDT            5.50             60         -              Normal
  04/13/2026 01 PM PDT            5.50             60         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/13/2026 02 PM PDT            5.49             59                        Normal
  04/13/2026 03 PM PDT            5.49             59         0              Normal
  04/13/2026 04 PM PDT            5.48             58         -              Normal
  04/13/2026 05 PM PDT            5.48             58         0              Normal
  04/13/2026 06 PM PDT            5.47             57         -              Normal
  04/13/2026 07 PM PDT            5.47             57         0              Normal
  04/13/2026 08 PM PDT            5.47             57         0              Normal
  04/13/2026 09 PM PDT            5.46             56         -              Normal
  04/13/2026 10 PM PDT            5.46             56         0              Normal
  04/13/2026 11 PM PDT            5.46             56         0              Normal
  04/14/2026 12 AM PDT            5.46             56         0              Normal
  04/14/2026 01 AM PDT            5.46             56         0              Normal
  04/14/2026 02 AM PDT            5.46             56         0              Normal
  04/14/2026 03 AM PDT            5.46             56         0              Normal
  04/14/2026 04 AM PDT            5.46             56         0              Normal
  04/14/2026 05 AM PDT            5.46             56         0              Normal
  04/14/2026 06 AM PDT            5.46             56         0              Normal
  04/14/2026 07 AM PDT            5.45             55         -              Normal
  04/14/2026 08 AM PDT            5.45             55         0              Normal
  04/14/2026 09 AM PDT            5.45             55         0              Normal
  04/14/2026 10 AM PDT            5.45             55         0              Normal
  04/14/2026 11 AM PDT            5.45             55         0              Normal
  04/14/2026 12 PM PDT            5.45             55         0              Normal
  04/14/2026 01 PM PDT            5.45             55         0              Normal
  04/14/2026 02 PM PDT            5.45             55         0              Normal
  04/14/2026 03 PM PDT            5.45             55         0              Normal
  04/14/2026 04 PM PDT            5.44             54         -              Normal
  04/14/2026 05 PM PDT            5.44             54         0              Normal
  04/14/2026 06 PM PDT            5.44             54         0              Normal
  04/14/2026 07 PM PDT            5.44             54         0              Normal
  04/14/2026 08 PM PDT            5.44             54         0              Normal
  04/14/2026 09 PM PDT            5.44             54         0              Normal
  04/14/2026 10 PM PDT            5.43             53         -              Normal
  04/14/2026 11 PM PDT            5.43             53         0              Normal
  04/15/2026 12 AM PDT            5.43             53         0              Normal
  04/15/2026 01 AM PDT            5.43             53         0              Normal
  04/15/2026 02 AM PDT            5.43             53         0              Normal
  04/15/2026 03 AM PDT            5.43             53         0              Normal
  04/15/2026 04 AM PDT            5.43             53         0              Normal
  04/15/2026 05 AM PDT            5.43             53         0              Normal
  04/15/2026 06 AM PDT            5.43             53         0              Normal
  04/15/2026 07 AM PDT            5.42             52         -              Normal
  04/15/2026 08 AM PDT            5.42             52         0              Normal
  04/15/2026 09 AM PDT            5.42             52         0              Normal
  04/15/2026 10 AM PDT            5.42             52         0              Normal
  04/15/2026 11 AM PDT            5.42             52         0              Normal
  04/15/2026 12 PM PDT            5.42             52         0              Normal
  04/15/2026 01 PM PDT            5.42             52         0              Normal
  04/15/2026 02 PM PDT            5.42             52         0              Normal
  04/15/2026 03 PM PDT            5.42             52         0              Normal
  04/15/2026 04 PM PDT            5.42             52         0              Normal
  04/15/2026 05 PM PDT            5.41             51         -              Normal
  04/15/2026 06 PM PDT            5.41             51         0              Normal
  04/15/2026 07 PM PDT            5.41             51         0              Normal
  04/15/2026 08 PM PDT            5.41             51         0              Normal
  04/15/2026 09 PM PDT            5.41             51         0              Normal
  04/15/2026 10 PM PDT            5.41             51         0              Normal
  04/15/2026 11 PM PDT            5.41             51         0              Normal
  04/16/2026 12 AM PDT            5.40             50         -              Normal
  04/16/2026 01 AM PDT            5.40             50         0              Normal
  04/16/2026 02 AM PDT            5.40             50         0              Normal
  04/16/2026 03 AM PDT            5.40             50         0              Normal
  04/16/2026 04 AM PDT            5.40             50         0              Normal
  04/16/2026 05 AM PDT            5.40             50         0              Normal
  04/16/2026 06 AM PDT            5.40             50         0              Normal
  04/16/2026 07 AM PDT            5.40             50         0              Normal
  04/16/2026 08 AM PDT            5.39             49         -              Normal
  04/16/2026 09 AM PDT            5.39             49         0              Normal
  04/16/2026 10 AM PDT            5.39             49         0              Normal
  04/16/2026 11 AM PDT            5.39             49         0              Normal
  04/16/2026 12 PM PDT            5.39             49         0              Normal
  04/16/2026 01 PM PDT            5.39             49         0              Normal
  04/16/2026 02 PM PDT            5.39             49         0              Normal
  04/16/2026 03 PM PDT            5.39             49         0              Normal
  04/16/2026 04 PM PDT            5.39             49         0              Normal
  04/16/2026 05 PM PDT            5.38             48         -              Normal
  04/16/2026 06 PM PDT            5.38             48         0              Normal
  04/16/2026 07 PM PDT            5.38             48         0              Normal
  04/16/2026 08 PM PDT            5.38             48         0              Normal
  04/16/2026 09 PM PDT            5.38             48         0              Normal
  04/16/2026 10 PM PDT            5.38             48         0              Normal
  04/16/2026 11 PM PDT            5.38             48         0              Normal
  04/17/2026 12 AM PDT            5.38             48         0              Normal
  04/17/2026 01 AM PDT            5.37             47         -              Normal
  04/17/2026 02 AM PDT            5.37             47         0              Normal
  04/17/2026 03 AM PDT            5.37             47         0              Normal
  04/17/2026 04 AM PDT            5.37             47         0              Normal
  04/17/2026 05 AM PDT            5.37             47         0              Normal
  04/17/2026 06 AM PDT            5.37             47         0              Normal
  04/17/2026 07 AM PDT            5.37             47         0              Normal
  04/17/2026 08 AM PDT            5.36             46         -              Normal
  04/17/2026 09 AM PDT            5.36             46         0              Normal
  04/17/2026 10 AM PDT            5.36             46         0              Normal
  04/17/2026 11 AM PDT            5.36             46         0              Normal
  04/17/2026 12 PM PDT            5.36             46         0              Normal
  04/17/2026 01 PM PDT            5.36             46         0              Normal
  04/17/2026 02 PM PDT            5.36             46         0              Normal
  04/17/2026 03 PM PDT            5.36             46         0              Normal
  04/17/2026 04 PM PDT            5.35             45         -              Normal
  04/17/2026 05 PM PDT            5.35             45         0              Normal
  04/17/2026 06 PM PDT            5.35             45         0              Normal
  04/17/2026 07 PM PDT            5.35             45         0              Normal
  04/17/2026 08 PM PDT            5.35             45         0              Normal
  04/17/2026 09 PM PDT            5.35             45         0              Normal
  04/17/2026 10 PM PDT            5.35             45         0              Normal
  04/17/2026 11 PM PDT            5.34             45         -              Normal
  04/18/2026 12 AM PDT            5.34             45         0              Normal
  04/18/2026 01 AM PDT            5.34             45         0              Normal
  04/18/2026 02 AM PDT            5.34             45         0              Normal
  04/18/2026 03 AM PDT            5.34             45         0              Normal
  04/18/2026 04 AM PDT            5.34             45         0              Normal
  04/18/2026 05 AM PDT            5.33             44         -              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.