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: May 13 2026 at 7:23 AM PDTNext Issuance: May 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:  05/13/2026 at 07:25 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/08/2026 at 06:00 PM PDT
# Maximum Observed Stage:                       5.27 Feet
# Maximum Observed Flow:                        40 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/13/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       5.21 Feet
# Maximum Forecast Flow:                        35 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/08/2026 07 AM PDT            5.25             38                        Normal
  05/08/2026 08 AM PDT            5.26             39         +              Normal
  05/08/2026 09 AM PDT            5.26             39         0              Normal
  05/08/2026 10 AM PDT            5.26             39         0              Normal
  05/08/2026 11 AM PDT            5.26             39         0              Normal
  05/08/2026 12 PM PDT            5.26             39         0              Normal
  05/08/2026 01 PM PDT            5.26             39         0              Normal
  05/08/2026 02 PM PDT            5.26             39         0              Normal
  05/08/2026 03 PM PDT            5.25             38         -              Normal
  05/08/2026 04 PM PDT            5.26             39         +              Normal
  05/08/2026 05 PM PDT            5.26             39         0              Normal
  05/08/2026 06 PM PDT            5.27             40         +              Normal
  05/08/2026 07 PM PDT            5.26             39         -              Normal
  05/08/2026 08 PM PDT            5.25             38         -              Normal
  05/08/2026 09 PM PDT            5.24             38         -              Normal
  05/08/2026 10 PM PDT            5.24             38         0              Normal
  05/08/2026 11 PM PDT            5.24             38         0              Normal
  05/09/2026 12 AM PDT            5.24             38         0              Normal
  05/09/2026 01 AM PDT            5.24             38         0              Normal
  05/09/2026 02 AM PDT            5.24             38         0              Normal
  05/09/2026 03 AM PDT            5.24             38         0              Normal
  05/09/2026 04 AM PDT            5.24             38         0              Normal
  05/09/2026 05 AM PDT            5.24             38         0              Normal
  05/09/2026 06 AM PDT            5.24             38         0              Normal
  05/09/2026 07 AM PDT            5.25             38         +              Normal
  05/09/2026 08 AM PDT            5.26             39         +              Normal
  05/09/2026 09 AM PDT            5.26             39         0              Normal
  05/09/2026 10 AM PDT            5.26             39         0              Normal
  05/09/2026 11 AM PDT            5.25             38         -              Normal
  05/09/2026 12 PM PDT            5.25             38         0              Normal
  05/09/2026 01 PM PDT            5.25             38         0              Normal
  05/09/2026 02 PM PDT            5.25             38         0              Normal
  05/09/2026 03 PM PDT            5.25             38         0              Normal
  05/09/2026 04 PM PDT            5.25             38         0              Normal
  05/09/2026 05 PM PDT            5.26             39         +              Normal
  05/09/2026 06 PM PDT            5.25             38         -              Normal
  05/09/2026 07 PM PDT            5.24             38         -              Normal
  05/09/2026 08 PM PDT            5.24             38         0              Normal
  05/09/2026 09 PM PDT            5.23             37         -              Normal
  05/09/2026 10 PM PDT            5.23             37         0              Normal
  05/09/2026 11 PM PDT            5.23             37         0              Normal
  05/10/2026 12 AM PDT            5.23             37         0              Normal
  05/10/2026 01 AM PDT            5.23             37         0              Normal
  05/10/2026 02 AM PDT            5.23             37         0              Normal
  05/10/2026 03 AM PDT            5.23             37         0              Normal
  05/10/2026 04 AM PDT            5.23             37         0              Normal
  05/10/2026 05 AM PDT            5.23             37         0              Normal
  05/10/2026 06 AM PDT            5.23             37         0              Normal
  05/10/2026 07 AM PDT            5.23             37         0              Normal
  05/10/2026 08 AM PDT            5.24             38         +              Normal
  05/10/2026 09 AM PDT            5.25             38         +              Normal
  05/10/2026 10 AM PDT            5.24             38         -              Normal
  05/10/2026 11 AM PDT            5.24             38         0              Normal
  05/10/2026 12 PM PDT            5.24             38         0              Normal
  05/10/2026 01 PM PDT            5.24             38         0              Normal
  05/10/2026 02 PM PDT            5.24             38         0              Normal
  05/10/2026 03 PM PDT            5.24             38         0              Normal
  05/10/2026 04 PM PDT            5.25             38         +              Normal
  05/10/2026 05 PM PDT            5.24             38         -              Normal
  05/10/2026 06 PM PDT            5.24             38         0              Normal
  05/10/2026 07 PM PDT            5.23             37         -              Normal
  05/10/2026 08 PM PDT            5.23             37         0              Normal
  05/10/2026 09 PM PDT            5.23             37         0              Normal
  05/10/2026 10 PM PDT            5.23             37         0              Normal
  05/10/2026 11 PM PDT            5.23             37         0              Normal
  05/11/2026 12 AM PDT            5.23             37         0              Normal
  05/11/2026 01 AM PDT            5.23             37         0              Normal
  05/11/2026 02 AM PDT            5.23             37         0              Normal
  05/11/2026 03 AM PDT            5.23             37         0              Normal
  05/11/2026 04 AM PDT            5.23             37         0              Normal
  05/11/2026 05 AM PDT            5.23             37         0              Normal
  05/11/2026 06 AM PDT            5.23             37         0              Normal
  05/11/2026 07 AM PDT            5.23             37         0              Normal
  05/11/2026 08 AM PDT            5.23             37         0              Normal
  05/11/2026 09 AM PDT            5.23             37         0              Normal
  05/11/2026 10 AM PDT            5.25             38         +              Normal
  05/11/2026 11 AM PDT            5.25             38         0              Normal
  05/11/2026 12 PM PDT            5.24             38         -              Normal
  05/11/2026 01 PM PDT            5.24             38         0              Normal
  05/11/2026 02 PM PDT            5.25             38         +              Normal
  05/11/2026 03 PM PDT            5.25             38         0              Normal
  05/11/2026 04 PM PDT            5.24             38         -              Normal
  05/11/2026 05 PM PDT            5.24             38         0              Normal
  05/11/2026 06 PM PDT            5.24             38         0              Normal
  05/11/2026 07 PM PDT            5.24             38         0              Normal
  05/11/2026 08 PM PDT            5.24             38         0              Normal
  05/11/2026 09 PM PDT            5.24             38         0              Normal
  05/11/2026 10 PM PDT            5.23             37         -              Normal
  05/11/2026 11 PM PDT            5.23             37         0              Normal
  05/12/2026 12 AM PDT            5.23             37         0              Normal
  05/12/2026 01 AM PDT            5.23             37         0              Normal
  05/12/2026 02 AM PDT            5.23             37         0              Normal
  05/12/2026 03 AM PDT            5.23             37         0              Normal
  05/12/2026 04 AM PDT            5.23             37         0              Normal
  05/12/2026 05 AM PDT            5.23             37         0              Normal
  05/12/2026 06 AM PDT            5.23             37         0              Normal
  05/12/2026 07 AM PDT            5.23             37         0              Normal
  05/12/2026 08 AM PDT            5.23             37         0              Normal
  05/12/2026 09 AM PDT            5.25             38         +              Normal
  05/12/2026 10 AM PDT            5.23             37         -              Normal
  05/12/2026 11 AM PDT            5.23             37         0              Normal
  05/12/2026 12 PM PDT            5.23             37         0              Normal
  05/12/2026 01 PM PDT            5.23             37         0              Normal
  05/12/2026 02 PM PDT            5.23             37         0              Normal
  05/12/2026 03 PM PDT            5.23             37         0              Normal
  05/12/2026 04 PM PDT            5.22             36         -              Normal
  05/12/2026 05 PM PDT            5.22             36         0              Normal
  05/12/2026 06 PM PDT            5.22             36         0              Normal
  05/12/2026 07 PM PDT            5.22             36         0              Normal
  05/12/2026 08 PM PDT            5.22             36         0              Normal
  05/12/2026 09 PM PDT            5.23             37         +              Normal
  05/12/2026 10 PM PDT            5.22             36         -              Normal
  05/12/2026 11 PM PDT            5.22             36         0              Normal
  05/13/2026 12 AM PDT            5.22             36         0              Normal
  05/13/2026 01 AM PDT            5.22             36         0              Normal
  05/13/2026 02 AM PDT            5.21             35         -              Normal
  05/13/2026 03 AM PDT            5.22             36         +              Normal
  05/13/2026 04 AM PDT            5.21             35         -              Normal
  05/13/2026 05 AM PDT            5.21             35         0              Normal
  05/13/2026 06 AM PDT            5.21             35         0              Normal
  05/13/2026 07 AM PDT            5.21             35         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/13/2026 08 AM PDT            5.21             35                        Normal
  05/13/2026 09 AM PDT            5.21             35         0              Normal
  05/13/2026 10 AM PDT            5.21             35         0              Normal
  05/13/2026 11 AM PDT            5.21             35         0              Normal
  05/13/2026 12 PM PDT            5.21             35         0              Normal
  05/13/2026 01 PM PDT            5.21             35         0              Normal
  05/13/2026 02 PM PDT            5.21             35         0              Normal
  05/13/2026 03 PM PDT            5.21             35         0              Normal
  05/13/2026 04 PM PDT            5.21             35         0              Normal
  05/13/2026 05 PM PDT            5.21             35         0              Normal
  05/13/2026 06 PM PDT            5.21             35         0              Normal
  05/13/2026 07 PM PDT            5.21             35         0              Normal
  05/13/2026 08 PM PDT            5.21             35         0              Normal
  05/13/2026 09 PM PDT            5.21             35         0              Normal
  05/13/2026 10 PM PDT            5.21             35         0              Normal
  05/13/2026 11 PM PDT            5.21             35         0              Normal
  05/14/2026 12 AM PDT            5.21             35         0              Normal
  05/14/2026 01 AM PDT            5.21             35         0              Normal
  05/14/2026 02 AM PDT            5.21             35         0              Normal
  05/14/2026 03 AM PDT            5.21             35         0              Normal
  05/14/2026 04 AM PDT            5.21             35         0              Normal
  05/14/2026 05 AM PDT            5.21             35         0              Normal
  05/14/2026 06 AM PDT            5.21             35         0              Normal
  05/14/2026 07 AM PDT            5.21             35         0              Normal
  05/14/2026 08 AM PDT            5.21             35         0              Normal
  05/14/2026 09 AM PDT            5.21             35         0              Normal
  05/14/2026 10 AM PDT            5.21             35         0              Normal
  05/14/2026 11 AM PDT            5.21             35         0              Normal
  05/14/2026 12 PM PDT            5.21             35         0              Normal
  05/14/2026 01 PM PDT            5.21             35         0              Normal
  05/14/2026 02 PM PDT            5.21             35         0              Normal
  05/14/2026 03 PM PDT            5.21             35         0              Normal
  05/14/2026 04 PM PDT            5.21             35         0              Normal
  05/14/2026 05 PM PDT            5.21             35         0              Normal
  05/14/2026 06 PM PDT            5.21             35         0              Normal
  05/14/2026 07 PM PDT            5.21             35         0              Normal
  05/14/2026 08 PM PDT            5.21             35         0              Normal
  05/14/2026 09 PM PDT            5.21             35         0              Normal
  05/14/2026 10 PM PDT            5.21             35         0              Normal
  05/14/2026 11 PM PDT            5.21             35         0              Normal
  05/15/2026 12 AM PDT            5.21             35         0              Normal
  05/15/2026 01 AM PDT            5.21             35         0              Normal
  05/15/2026 02 AM PDT            5.21             35         0              Normal
  05/15/2026 03 AM PDT            5.21             35         0              Normal
  05/15/2026 04 AM PDT            5.21             35         0              Normal
  05/15/2026 05 AM PDT            5.20             34         -              Normal
  05/15/2026 06 AM PDT            5.20             34         0              Normal
  05/15/2026 07 AM PDT            5.20             34         0              Normal
  05/15/2026 08 AM PDT            5.20             34         0              Normal
  05/15/2026 09 AM PDT            5.20             34         0              Normal
  05/15/2026 10 AM PDT            5.20             34         0              Normal
  05/15/2026 11 AM PDT            5.20             34         0              Normal
  05/15/2026 12 PM PDT            5.20             34         0              Normal
  05/15/2026 01 PM PDT            5.20             34         0              Normal
  05/15/2026 02 PM PDT            5.20             34         0              Normal
  05/15/2026 03 PM PDT            5.20             34         0              Normal
  05/15/2026 04 PM PDT            5.20             34         0              Normal
  05/15/2026 05 PM PDT            5.20             34         0              Normal
  05/15/2026 06 PM PDT            5.20             34         0              Normal
  05/15/2026 07 PM PDT            5.20             34         0              Normal
  05/15/2026 08 PM PDT            5.20             34         0              Normal
  05/15/2026 09 PM PDT            5.20             34         0              Normal
  05/15/2026 10 PM PDT            5.20             34         0              Normal
  05/15/2026 11 PM PDT            5.20             34         0              Normal
  05/16/2026 12 AM PDT            5.20             34         0              Normal
  05/16/2026 01 AM PDT            5.20             34         0              Normal
  05/16/2026 02 AM PDT            5.20             34         0              Normal
  05/16/2026 03 AM PDT            5.20             34         0              Normal
  05/16/2026 04 AM PDT            5.20             34         0              Normal
  05/16/2026 05 AM PDT            5.20             34         0              Normal
  05/16/2026 06 AM PDT            5.20             34         0              Normal
  05/16/2026 07 AM PDT            5.20             34         0              Normal
  05/16/2026 08 AM PDT            5.20             34         0              Normal
  05/16/2026 09 AM PDT            5.20             34         0              Normal
  05/16/2026 10 AM PDT            5.20             34         0              Normal
  05/16/2026 11 AM PDT            5.20             34         0              Normal
  05/16/2026 12 PM PDT            5.20             34         0              Normal
  05/16/2026 01 PM PDT            5.20             34         0              Normal
  05/16/2026 02 PM PDT            5.20             34         0              Normal
  05/16/2026 03 PM PDT            5.20             34         0              Normal
  05/16/2026 04 PM PDT            5.20             34         0              Normal
  05/16/2026 05 PM PDT            5.20             34         0              Normal
  05/16/2026 06 PM PDT            5.19             34         -              Normal
  05/16/2026 07 PM PDT            5.19             34         0              Normal
  05/16/2026 08 PM PDT            5.19             34         0              Normal
  05/16/2026 09 PM PDT            5.19             34         0              Normal
  05/16/2026 10 PM PDT            5.19             34         0              Normal
  05/16/2026 11 PM PDT            5.19             34         0              Normal
  05/17/2026 12 AM PDT            5.19             34         0              Normal
  05/17/2026 01 AM PDT            5.19             34         0              Normal
  05/17/2026 02 AM PDT            5.19             34         0              Normal
  05/17/2026 03 AM PDT            5.19             34         0              Normal
  05/17/2026 04 AM PDT            5.19             34         0              Normal
  05/17/2026 05 AM PDT            5.19             34         0              Normal
  05/17/2026 06 AM PDT            5.19             34         0              Normal
  05/17/2026 07 AM PDT            5.19             34         0              Normal
  05/17/2026 08 AM PDT            5.19             34         0              Normal
  05/17/2026 09 AM PDT            5.19             34         0              Normal
  05/17/2026 10 AM PDT            5.19             34         0              Normal
  05/17/2026 11 AM PDT            5.19             34         0              Normal
  05/17/2026 12 PM PDT            5.19             34         0              Normal
  05/17/2026 01 PM PDT            5.19             34         0              Normal
  05/17/2026 02 PM PDT            5.19             34         0              Normal
  05/17/2026 03 PM PDT            5.19             34         0              Normal
  05/17/2026 04 PM PDT            5.19             34         0              Normal
  05/17/2026 05 PM PDT            5.19             34         0              Normal
  05/17/2026 06 PM PDT            5.18             33         -              Normal
  05/17/2026 07 PM PDT            5.18             33         0              Normal
  05/17/2026 08 PM PDT            5.18             33         0              Normal
  05/17/2026 09 PM PDT            5.18             33         0              Normal
  05/17/2026 10 PM PDT            5.18             33         0              Normal
  05/17/2026 11 PM PDT            5.18             33         0              Normal
  05/18/2026 12 AM PDT            5.18             33         0              Normal
  05/18/2026 01 AM PDT            5.18             33         0              Normal
  05/18/2026 02 AM PDT            5.18             33         0              Normal
  05/18/2026 03 AM PDT            5.18             33         0              Normal
  05/18/2026 04 AM PDT            5.18             33         0              Normal
  05/18/2026 05 AM PDT            5.18             33         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.