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 ALMADEN EXPRESSWAY (GUDC1)
Latitude: 37.28º NLongitude: 121.88º WElevation: 150 FeetForecast Type: Official Location
Location: Santa Clara County in CaliforniaBulletin Group: Central CoastRiver Group: South Bay
Issuance Time: Oct 17 2026 at 7:12 AM PDTNext Issuance: Oct 18 2026 at 9:00 AM PDT
Action: 9.0 FeetMinor Flood: 10.5 FeetModerate Flood: 11.5 FeetMajor Flood: 15.0 Feet


# Tabular Observed and Forecast Hydrograph Information
#
# Location: Guadalupe River - San Jose at Almaden Exprwy (GUDC1)
#
# File Generation Time:  10/17/2026 at 07:12 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  10/17/2026 at 07:00 AM PDT
# Maximum Observed Stage:                       2.54 Feet
# Maximum Observed Flow:                        2 cfs
#
# Earliest Date & Time of Maximum Forecast:     10/20/2026 at 04:00 PM PDT
# Maximum Forecast Stage:                       2.88 Feet
# Maximum Forecast Flow:                        8 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  10/12/2026 07 AM PDT            2.22              1                        Normal
  10/12/2026 08 AM PDT            2.22              1         0              Normal
  10/12/2026 09 AM PDT            2.21              1         -              Normal
  10/12/2026 10 AM PDT            2.21              1         0              Normal
  10/12/2026 11 AM PDT            2.20              1         -              Normal
  10/12/2026 12 PM PDT            2.19              1         -              Normal
  10/12/2026 01 PM PDT            2.19              1         0              Normal
  10/12/2026 02 PM PDT            2.17              1         -              Normal
  10/12/2026 03 PM PDT            2.16              1         -              Normal
  10/12/2026 04 PM PDT            2.15              1         -              Normal
  10/12/2026 05 PM PDT            2.14              0         -              Normal
  10/12/2026 06 PM PDT            2.13              0         -              Normal
  10/12/2026 07 PM PDT            2.12              0         -              Normal
  10/12/2026 08 PM PDT            2.10              0         -              Normal
  10/12/2026 09 PM PDT            2.09              0         -              Normal
  10/12/2026 10 PM PDT            2.08              0         -              Normal
  10/12/2026 11 PM PDT            2.07              0         -              Normal
  10/13/2026 12 AM PDT            2.06              0         -              Normal
  10/13/2026 01 AM PDT            2.05              0         -              Normal
  10/13/2026 02 AM PDT            2.04              0         -              Normal
  10/13/2026 03 AM PDT            2.03              0         -              Normal
  10/13/2026 04 AM PDT            2.02              0         -              Normal
  10/13/2026 05 AM PDT            2.02              0         0              Normal
  10/13/2026 06 AM PDT            2.01              0         -              Normal
  10/13/2026 07 AM PDT            2.01              0         0              Normal
  10/13/2026 08 AM PDT            2.00              0         -              Normal
  10/13/2026 09 AM PDT            1.99              0         -              Normal
  10/13/2026 10 AM PDT            1.99              0         0              Normal
  10/13/2026 11 AM PDT            1.98              0         -              Normal
  10/13/2026 12 PM PDT            1.97              0         -              Normal
  10/13/2026 01 PM PDT            1.96              0         -              Normal
  10/13/2026 02 PM PDT            1.96              0         0              Normal
  10/13/2026 03 PM PDT            1.94              0         -              Normal
  10/13/2026 04 PM PDT            1.94              0         0              Normal
  10/13/2026 05 PM PDT            1.92              0         -              Normal
  10/13/2026 06 PM PDT            1.92              0         0              Normal
  10/13/2026 07 PM PDT            1.91              0         -              Normal
  10/13/2026 08 PM PDT            1.90              0         -              Normal
  10/13/2026 09 PM PDT            1.90              0         0              Normal
  10/13/2026 10 PM PDT            1.97              0         +              Normal
  10/13/2026 11 PM PDT            1.88              0         -              Normal
  10/14/2026 12 AM PDT            1.88              0         0              Normal
  10/14/2026 01 AM PDT            1.86              0         -              Normal
  10/14/2026 02 AM PDT            1.86              0         0              Normal
  10/14/2026 03 AM PDT            1.86              0         0              Normal
  10/14/2026 04 AM PDT            1.85              0         -              Normal
  10/14/2026 05 AM PDT            1.85              0         0              Normal
  10/14/2026 06 AM PDT            1.85              0         0              Normal
  10/14/2026 07 AM PDT            1.85              0         0              Normal
  10/14/2026 08 AM PDT            1.84              0         -              Normal
  10/14/2026 09 AM PDT            1.84              0         0              Normal
  10/14/2026 10 AM PDT            1.84              0         0              Normal
  10/14/2026 11 AM PDT            1.84              0         0              Normal
  10/14/2026 12 PM PDT            1.84              0         0              Normal
  10/14/2026 01 PM PDT            1.84              0         0              Normal
  10/14/2026 02 PM PDT            1.84              0         0              Normal
  10/14/2026 03 PM PDT            1.85              0         +              Normal
  10/14/2026 04 PM PDT            1.85              0         0              Normal
  10/14/2026 05 PM PDT            1.85              0         0              Normal
  10/14/2026 06 PM PDT            1.86              0         +              Normal
  10/14/2026 07 PM PDT            1.86              0         0              Normal
  10/14/2026 08 PM PDT            1.86              0         0              Normal
  10/14/2026 09 PM PDT            1.88              0         +              Normal
  10/14/2026 10 PM PDT            1.88              0         0              Normal
  10/14/2026 11 PM PDT            1.89              0         +              Normal
  10/15/2026 12 AM PDT            1.90              0         +              Normal
  10/15/2026 01 AM PDT            1.91              0         +              Normal
  10/15/2026 02 AM PDT            1.92              0         +              Normal
  10/15/2026 03 AM PDT            1.94              0         +              Normal
  10/15/2026 04 AM PDT            1.95              0         +              Normal
  10/15/2026 05 AM PDT            1.97              0         +              Normal
  10/15/2026 06 AM PDT            1.99              0         +              Normal
  10/15/2026 07 AM PDT            2.01              0         +              Normal
  10/15/2026 08 AM PDT            2.02              0         +              Normal
  10/15/2026 09 AM PDT            2.04              0         +              Normal
  10/15/2026 10 AM PDT            2.06              0         +              Normal
  10/15/2026 11 AM PDT            2.08              0         +              Normal
  10/15/2026 12 PM PDT            2.10              0         +              Normal
  10/15/2026 01 PM PDT            2.12              0         +              Normal
  10/15/2026 02 PM PDT            2.13              0         +              Normal
  10/15/2026 03 PM PDT            2.15              1         +              Normal
  10/15/2026 04 PM PDT            2.16              1         +              Normal
  10/15/2026 05 PM PDT            2.18              1         +              Normal
  10/15/2026 06 PM PDT            2.19              1         +              Normal
  10/15/2026 07 PM PDT            2.21              1         +              Normal
  10/15/2026 08 PM PDT            2.22              1         +              Normal
  10/15/2026 09 PM PDT            2.23              1         +              Normal
  10/15/2026 10 PM PDT            2.25              1         +              Normal
  10/15/2026 11 PM PDT            2.26              1         +              Normal
  10/16/2026 12 AM PDT            2.28              1         +              Normal
  10/16/2026 01 AM PDT            2.30              1         +              Normal
  10/16/2026 02 AM PDT            2.31              1         +              Normal
  10/16/2026 03 AM PDT            2.33              1         +              Normal
  10/16/2026 04 AM PDT            2.35              1         +              Normal
  10/16/2026 05 AM PDT            2.36              1         +              Normal
  10/16/2026 06 AM PDT            2.38              1         +              Normal
  10/16/2026 07 AM PDT            2.40              1         +              Normal
  10/16/2026 08 AM PDT            2.41              1         +              Normal
  10/16/2026 09 AM PDT            2.43              2         +              Normal
  10/16/2026 10 AM PDT            2.44              2         +              Normal
  10/16/2026 11 AM PDT            2.46              2         +              Normal
  10/16/2026 12 PM PDT            2.47              2         +              Normal
  10/16/2026 01 PM PDT            2.48              2         +              Normal
  10/16/2026 02 PM PDT            2.49              2         +              Normal
  10/16/2026 03 PM PDT            2.49              2         0              Normal
  10/16/2026 04 PM PDT            2.49              2         0              Normal
  10/16/2026 05 PM PDT            2.49              2         0              Normal
  10/16/2026 06 PM PDT            2.49              2         0              Normal
  10/16/2026 07 PM PDT            2.49              2         0              Normal
  10/16/2026 08 PM PDT            2.49              2         0              Normal
  10/16/2026 09 PM PDT            2.49              2         0              Normal
  10/16/2026 10 PM PDT            2.49              2         0              Normal
  10/16/2026 11 PM PDT            2.50              2         +              Normal
  10/17/2026 12 AM PDT            2.51              2         +              Normal
  10/17/2026 01 AM PDT            2.52              2         +              Normal
  10/17/2026 02 AM PDT            2.52              2         0              Normal
  10/17/2026 03 AM PDT            2.53              2         +              Normal
  10/17/2026 04 AM PDT            2.53              2         0              Normal
  10/17/2026 05 AM PDT            2.54              2         +              Normal
  10/17/2026 06 AM PDT            2.54              2         0              Normal
  10/17/2026 07 AM PDT            2.54              2         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  10/17/2026 08 AM PDT            2.54              2                        Normal
  10/17/2026 09 AM PDT            2.54              2         0              Normal
  10/17/2026 10 AM PDT            2.54              2         0              Normal
  10/17/2026 11 AM PDT            2.54              2         0              Normal
  10/17/2026 12 PM PDT            2.54              2         0              Normal
  10/17/2026 01 PM PDT            2.54              2         0              Normal
  10/17/2026 02 PM PDT            2.54              2         0              Normal
  10/17/2026 03 PM PDT            2.54              2         0              Normal
  10/17/2026 04 PM PDT            2.54              2         0              Normal
  10/17/2026 05 PM PDT            2.54              2         0              Normal
  10/17/2026 06 PM PDT            2.54              2         0              Normal
  10/17/2026 07 PM PDT            2.54              2         0              Normal
  10/17/2026 08 PM PDT            2.54              2         0              Normal
  10/17/2026 09 PM PDT            2.54              2         0              Normal
  10/17/2026 10 PM PDT            2.54              2         0              Normal
  10/17/2026 11 PM PDT            2.54              2         0              Normal
  10/18/2026 12 AM PDT            2.54              2         0              Normal
  10/18/2026 01 AM PDT            2.54              2         0              Normal
  10/18/2026 02 AM PDT            2.54              2         0              Normal
  10/18/2026 03 AM PDT            2.54              2         0              Normal
  10/18/2026 04 AM PDT            2.54              2         0              Normal
  10/18/2026 05 AM PDT            2.54              2         0              Normal
  10/18/2026 06 AM PDT            2.54              2         0              Normal
  10/18/2026 07 AM PDT            2.54              2         0              Normal
  10/18/2026 08 AM PDT            2.54              2         0              Normal
  10/18/2026 09 AM PDT            2.54              2         0              Normal
  10/18/2026 10 AM PDT            2.54              2         0              Normal
  10/18/2026 11 AM PDT            2.54              2         0              Normal
  10/18/2026 12 PM PDT            2.54              2         0              Normal
  10/18/2026 01 PM PDT            2.54              2         0              Normal
  10/18/2026 02 PM PDT            2.54              2         0              Normal
  10/18/2026 03 PM PDT            2.54              2         0              Normal
  10/18/2026 04 PM PDT            2.54              2         0              Normal
  10/18/2026 05 PM PDT            2.54              2         0              Normal
  10/18/2026 06 PM PDT            2.54              2         0              Normal
  10/18/2026 07 PM PDT            2.54              2         0              Normal
  10/18/2026 08 PM PDT            2.54              2         0              Normal
  10/18/2026 09 PM PDT            2.54              2         0              Normal
  10/18/2026 10 PM PDT            2.54              2         0              Normal
  10/18/2026 11 PM PDT            2.54              2         0              Normal
  10/19/2026 12 AM PDT            2.54              2         0              Normal
  10/19/2026 01 AM PDT            2.54              2         0              Normal
  10/19/2026 02 AM PDT            2.54              2         0              Normal
  10/19/2026 03 AM PDT            2.54              2         0              Normal
  10/19/2026 04 AM PDT            2.54              2         0              Normal
  10/19/2026 05 AM PDT            2.54              2         0              Normal
  10/19/2026 06 AM PDT            2.54              2         0              Normal
  10/19/2026 07 AM PDT            2.54              2         0              Normal
  10/19/2026 08 AM PDT            2.54              2         0              Normal
  10/19/2026 09 AM PDT            2.53              2         -              Normal
  10/19/2026 10 AM PDT            2.53              2         0              Normal
  10/19/2026 11 AM PDT            2.53              2         0              Normal
  10/19/2026 12 PM PDT            2.53              2         0              Normal
  10/19/2026 01 PM PDT            2.53              2         0              Normal
  10/19/2026 02 PM PDT            2.53              2         0              Normal
  10/19/2026 03 PM PDT            2.53              2         0              Normal
  10/19/2026 04 PM PDT            2.53              2         0              Normal
  10/19/2026 05 PM PDT            2.53              2         0              Normal
  10/19/2026 06 PM PDT            2.53              2         0              Normal
  10/19/2026 07 PM PDT            2.53              2         0              Normal
  10/19/2026 08 PM PDT            2.53              2         0              Normal
  10/19/2026 09 PM PDT            2.53              2         0              Normal
  10/19/2026 10 PM PDT            2.53              2         0              Normal
  10/19/2026 11 PM PDT            2.53              2         0              Normal
  10/20/2026 12 AM PDT            2.53              2         0              Normal
  10/20/2026 01 AM PDT            2.53              2         0              Normal
  10/20/2026 02 AM PDT            2.53              2         0              Normal
  10/20/2026 03 AM PDT            2.53              2         0              Normal
  10/20/2026 04 AM PDT            2.53              2         0              Normal
  10/20/2026 05 AM PDT            2.53              2         0              Normal
  10/20/2026 06 AM PDT            2.53              2         0              Normal
  10/20/2026 07 AM PDT            2.53              2         0              Normal
  10/20/2026 08 AM PDT            2.53              2         0              Normal
  10/20/2026 09 AM PDT            2.53              2         0              Normal
  10/20/2026 10 AM PDT            2.53              2         0              Normal
  10/20/2026 11 AM PDT            2.53              2         0              Normal
  10/20/2026 12 PM PDT            2.64              3         +              Normal
  10/20/2026 01 PM PDT            2.84              5         +              Normal
  10/20/2026 02 PM PDT            2.86              7         +              Normal
  10/20/2026 03 PM PDT            2.87              7         +              Normal
  10/20/2026 04 PM PDT            2.88              8         +              Normal
  10/20/2026 05 PM PDT            2.88              8         0              Normal
  10/20/2026 06 PM PDT            2.87              7         -              Normal
  10/20/2026 07 PM PDT            2.85              6         -              Normal
  10/20/2026 08 PM PDT            2.77              4         -              Normal
  10/20/2026 09 PM PDT            2.68              3         -              Normal
  10/20/2026 10 PM PDT            2.63              3         -              Normal
  10/20/2026 11 PM PDT            2.60              3         -              Normal
  10/21/2026 12 AM PDT            2.57              2         -              Normal
  10/21/2026 01 AM PDT            2.56              2         -              Normal
  10/21/2026 02 AM PDT            2.55              2         -              Normal
  10/21/2026 03 AM PDT            2.54              2         -              Normal
  10/21/2026 04 AM PDT            2.53              2         -              Normal
  10/21/2026 05 AM PDT            2.53              2         0              Normal
  10/21/2026 06 AM PDT            2.53              2         0              Normal
  10/21/2026 07 AM PDT            2.53              2         0              Normal
  10/21/2026 08 AM PDT            2.53              2         0              Normal
  10/21/2026 09 AM PDT            2.53              2         0              Normal
  10/21/2026 10 AM PDT            2.53              2         0              Normal
  10/21/2026 11 AM PDT            2.53              2         0              Normal
  10/21/2026 12 PM PDT            2.57              2         +              Normal
  10/21/2026 01 PM PDT            2.66              3         +              Normal
  10/21/2026 02 PM PDT            2.74              4         +              Normal
  10/21/2026 03 PM PDT            2.77              4         +              Normal
  10/21/2026 04 PM PDT            2.78              4         +              Normal
  10/21/2026 05 PM PDT            2.79              4         +              Normal
  10/21/2026 06 PM PDT            2.77              4         -              Normal
  10/21/2026 07 PM PDT            2.69              3         -              Normal
  10/21/2026 08 PM PDT            2.62              3         -              Normal
  10/21/2026 09 PM PDT            2.58              2         -              Normal
  10/21/2026 10 PM PDT            2.56              2         -              Normal
  10/21/2026 11 PM PDT            2.55              2         -              Normal
  10/22/2026 12 AM PDT            2.54              2         -              Normal
  10/22/2026 01 AM PDT            2.54              2         0              Normal
  10/22/2026 02 AM PDT            2.53              2         -              Normal
  10/22/2026 03 AM PDT            2.53              2         0              Normal
  10/22/2026 04 AM PDT            2.53              2         0              Normal
  10/22/2026 05 AM PDT            2.53              2         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.