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

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SAN JOAQUIN RIVER - VERNALIS (VNSC1)
Latitude: 37.68º NLongitude: 121.27º WElevation: 35 Feet
Location: San Joaquin County in CaliforniaBulletin Group: San JoaquinRiver Group: San Joaquin
Issuance Time: Jul 20 2025 at 7:08 AM PDTNext Issuance: Jul 21 2025 at 9:00 AM PDT
Action/Monitor: 24.5 FeetMinor Flood: 29.0 FeetModerate Flood: 32.0 FeetMajor Flood: 37.3 Feet


# Tabular Observed and Forecast Hydrograph Information
#
# Location: San Joaquin River - Vernalis (VNSC1)
#
# File Generation Time:  07/20/2025 at 07:08 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  07/20/2025 at 06:00 AM PDT
# Maximum Observed Stage:                       7.04 Feet
# Maximum Observed Flow:                        537 cfs
#
# Earliest Date & Time of Maximum Forecast:     07/22/2025 at 02:00 PM PDT
# Maximum Forecast Stage:                       7.14 Feet
# Maximum Forecast Flow:                        579 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  07/15/2025 07 AM PDT            6.93            492                        Normal
  07/15/2025 08 AM PDT            6.93            492         0              Normal
  07/15/2025 09 AM PDT            6.92            488         -              Normal
  07/15/2025 10 AM PDT            6.94            496         +              Normal
  07/15/2025 11 AM PDT            6.95            500         +              Normal
  07/15/2025 12 PM PDT            6.97            508         +              Normal
  07/15/2025 01 PM PDT            6.99            516         +              Normal
  07/15/2025 02 PM PDT            7.00            520         +              Normal
  07/15/2025 03 PM PDT            7.00            520         0              Normal
  07/15/2025 04 PM PDT            6.99            516         -              Normal
  07/15/2025 05 PM PDT            6.98            512         -              Normal
  07/15/2025 06 PM PDT            6.97            508         -              Normal
  07/15/2025 07 PM PDT            6.96            504         -              Normal
  07/15/2025 08 PM PDT            6.95            500         -              Normal
  07/15/2025 09 PM PDT            6.94            496         -              Normal
  07/15/2025 10 PM PDT            6.93            492         -              Normal
  07/15/2025 11 PM PDT            6.93            492         0              Normal
  07/16/2025 12 AM PDT            6.93            492         0              Normal
  07/16/2025 01 AM PDT            6.93            492         0              Normal
  07/16/2025 02 AM PDT            6.93            492         0              Normal
  07/16/2025 03 AM PDT            6.94            496         +              Normal
  07/16/2025 04 AM PDT            6.95            500         +              Normal
  07/16/2025 05 AM PDT            6.96            504         +              Normal
  07/16/2025 06 AM PDT            6.97            508         +              Normal
  07/16/2025 07 AM PDT            6.98            512         +              Normal
  07/16/2025 08 AM PDT            6.99            516         +              Normal
  07/16/2025 09 AM PDT            6.99            516         0              Normal
  07/16/2025 10 AM PDT            6.98            512         -              Normal
  07/16/2025 11 AM PDT            6.98            512         0              Normal
  07/16/2025 12 PM PDT            6.98            512         0              Normal
  07/16/2025 01 PM PDT            6.97            508         -              Normal
  07/16/2025 02 PM PDT            6.97            508         0              Normal
  07/16/2025 03 PM PDT            6.96            504         -              Normal
  07/16/2025 04 PM PDT            6.97            508         +              Normal
  07/16/2025 05 PM PDT            6.98            512         +              Normal
  07/16/2025 06 PM PDT            6.97            508         -              Normal
  07/16/2025 07 PM PDT            6.97            508         0              Normal
  07/16/2025 08 PM PDT            6.96            504         -              Normal
  07/16/2025 09 PM PDT            6.94            496         -              Normal
  07/16/2025 10 PM PDT            6.93            492         -              Normal
  07/16/2025 11 PM PDT            6.92            488         -              Normal
  07/17/2025 12 AM PDT            6.91            484         -              Normal
  07/17/2025 01 AM PDT            6.91            484         0              Normal
  07/17/2025 02 AM PDT            6.91            484         0              Normal
  07/17/2025 03 AM PDT            6.92            488         +              Normal
  07/17/2025 04 AM PDT            6.93            492         +              Normal
  07/17/2025 05 AM PDT            6.94            496         +              Normal
  07/17/2025 06 AM PDT            6.94            496         0              Normal
  07/17/2025 07 AM PDT            6.94            496         0              Normal
  07/17/2025 08 AM PDT            6.94            496         0              Normal
  07/17/2025 09 AM PDT            6.93            492         -              Normal
  07/17/2025 10 AM PDT            6.88            472         -              Normal
  07/17/2025 11 AM PDT            6.88            472         0              Normal
  07/17/2025 12 PM PDT            6.88            472         0              Normal
  07/17/2025 01 PM PDT            6.87            468         -              Normal
  07/17/2025 02 PM PDT            6.87            468         0              Normal
  07/17/2025 03 PM PDT            6.87            468         0              Normal
  07/17/2025 04 PM PDT            6.87            468         0              Normal
  07/17/2025 05 PM PDT            6.86            465         -              Normal
  07/17/2025 06 PM PDT            6.84            457         -              Normal
  07/17/2025 07 PM PDT            6.83            453         -              Normal
  07/17/2025 08 PM PDT            6.82            449         -              Normal
  07/17/2025 09 PM PDT            6.81            445         -              Normal
  07/17/2025 10 PM PDT            6.80            441         -              Normal
  07/17/2025 11 PM PDT            6.79            438         -              Normal
  07/18/2025 12 AM PDT            6.78            434         -              Normal
  07/18/2025 01 AM PDT            6.79            438         +              Normal
  07/18/2025 02 AM PDT            6.79            438         0              Normal
  07/18/2025 03 AM PDT            6.78            434         -              Normal
  07/18/2025 04 AM PDT            6.78            434         0              Normal
  07/18/2025 05 AM PDT            6.77            430         -              Normal
  07/18/2025 06 AM PDT            6.77            430         0              Normal
  07/18/2025 07 AM PDT            6.77            430         0              Normal
  07/18/2025 08 AM PDT            6.77            430         0              Normal
  07/18/2025 09 AM PDT            6.76            426         -              Normal
  07/18/2025 10 AM PDT            6.77            430         +              Normal
  07/18/2025 11 AM PDT            6.77            430         0              Normal
  07/18/2025 12 PM PDT            6.77            430         0              Normal
  07/18/2025 01 PM PDT            6.77            430         0              Normal
  07/18/2025 02 PM PDT            6.77            430         0              Normal
  07/18/2025 03 PM PDT            6.76            426         -              Normal
  07/18/2025 04 PM PDT            6.75            423         -              Normal
  07/18/2025 05 PM PDT            6.75            423         0              Normal
  07/18/2025 06 PM PDT            6.74            419         -              Normal
  07/18/2025 07 PM PDT            6.75            423         +              Normal
  07/18/2025 08 PM PDT            6.74            419         -              Normal
  07/18/2025 09 PM PDT            6.74            419         0              Normal
  07/18/2025 10 PM PDT            6.74            419         0              Normal
  07/18/2025 11 PM PDT            6.73            415         -              Normal
  07/19/2025 12 AM PDT            6.72            411         -              Normal
  07/19/2025 01 AM PDT            6.71            408         -              Normal
  07/19/2025 02 AM PDT            6.71            408         0              Normal
  07/19/2025 03 AM PDT            6.71            408         0              Normal
  07/19/2025 04 AM PDT            6.72            411         +              Normal
  07/19/2025 05 AM PDT            6.72            411         0              Normal
  07/19/2025 06 AM PDT            6.73            415         +              Normal
  07/19/2025 07 AM PDT            6.74            419         +              Normal
  07/19/2025 08 AM PDT            6.74            419         0              Normal
  07/19/2025 09 AM PDT            6.74            419         0              Normal
  07/19/2025 10 AM PDT            6.74            419         0              Normal
  07/19/2025 11 AM PDT            6.74            419         0              Normal
  07/19/2025 12 PM PDT            6.75            423         +              Normal
  07/19/2025 01 PM PDT            6.75            423         0              Normal
  07/19/2025 02 PM PDT            6.76            426         +              Normal
  07/19/2025 03 PM PDT            6.77            430         +              Normal
  07/19/2025 04 PM PDT            6.79            438         +              Normal
  07/19/2025 05 PM PDT            6.79            438         0              Normal
  07/19/2025 06 PM PDT            6.80            441         +              Normal
  07/19/2025 07 PM PDT            6.82            449         +              Normal
  07/19/2025 08 PM PDT            6.84            457         +              Normal
  07/19/2025 09 PM PDT            6.85            461         +              Normal
  07/19/2025 10 PM PDT            6.86            465         +              Normal
  07/19/2025 11 PM PDT            6.87            468         +              Normal
  07/20/2025 12 AM PDT            6.89            476         +              Normal
  07/20/2025 01 AM PDT            6.92            488         +              Normal
  07/20/2025 02 AM PDT            6.96            504         +              Normal
  07/20/2025 03 AM PDT            6.99            516         +              Normal
  07/20/2025 04 AM PDT            7.01            525         +              Normal
  07/20/2025 05 AM PDT            7.04            537         +              Normal
  07/20/2025 06 AM PDT            7.04            537         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  07/20/2025 07 AM PDT            7.04            537                        Normal
  07/20/2025 08 AM PDT            7.04            537         0              Normal
  07/20/2025 09 AM PDT            7.04            537         0              Normal
  07/20/2025 10 AM PDT            7.04            537         0              Normal
  07/20/2025 11 AM PDT            7.04            537         0              Normal
  07/20/2025 12 PM PDT            7.04            537         0              Normal
  07/20/2025 01 PM PDT            7.04            537         0              Normal
  07/20/2025 02 PM PDT            7.05            541         +              Normal
  07/20/2025 03 PM PDT            7.05            541         0              Normal
  07/20/2025 04 PM PDT            7.05            541         0              Normal
  07/20/2025 05 PM PDT            7.05            541         0              Normal
  07/20/2025 06 PM PDT            7.06            545         +              Normal
  07/20/2025 07 PM PDT            7.06            545         0              Normal
  07/20/2025 08 PM PDT            7.06            545         0              Normal
  07/20/2025 09 PM PDT            7.06            545         0              Normal
  07/20/2025 10 PM PDT            7.07            549         +              Normal
  07/20/2025 11 PM PDT            7.07            549         0              Normal
  07/21/2025 12 AM PDT            7.07            549         0              Normal
  07/21/2025 01 AM PDT            7.07            549         0              Normal
  07/21/2025 02 AM PDT            7.08            554         +              Normal
  07/21/2025 03 AM PDT            7.08            554         0              Normal
  07/21/2025 04 AM PDT            7.08            554         0              Normal
  07/21/2025 05 AM PDT            7.08            554         0              Normal
  07/21/2025 06 AM PDT            7.09            558         +              Normal
  07/21/2025 07 AM PDT            7.09            558         0              Normal
  07/21/2025 08 AM PDT            7.09            558         0              Normal
  07/21/2025 09 AM PDT            7.09            558         0              Normal
  07/21/2025 10 AM PDT            7.09            558         0              Normal
  07/21/2025 11 AM PDT            7.10            562         +              Normal
  07/21/2025 12 PM PDT            7.10            562         0              Normal
  07/21/2025 01 PM PDT            7.10            562         0              Normal
  07/21/2025 02 PM PDT            7.10            562         0              Normal
  07/21/2025 03 PM PDT            7.10            562         0              Normal
  07/21/2025 04 PM PDT            7.11            566         +              Normal
  07/21/2025 05 PM PDT            7.11            566         0              Normal
  07/21/2025 06 PM PDT            7.11            566         0              Normal
  07/21/2025 07 PM PDT            7.11            566         0              Normal
  07/21/2025 08 PM PDT            7.11            566         0              Normal
  07/21/2025 09 PM PDT            7.12            571         +              Normal
  07/21/2025 10 PM PDT            7.12            571         0              Normal
  07/21/2025 11 PM PDT            7.12            571         0              Normal
  07/22/2025 12 AM PDT            7.12            571         0              Normal
  07/22/2025 01 AM PDT            7.12            571         0              Normal
  07/22/2025 02 AM PDT            7.12            571         0              Normal
  07/22/2025 03 AM PDT            7.12            571         0              Normal
  07/22/2025 04 AM PDT            7.13            575         +              Normal
  07/22/2025 05 AM PDT            7.13            575         0              Normal
  07/22/2025 06 AM PDT            7.13            575         0              Normal
  07/22/2025 07 AM PDT            7.13            575         0              Normal
  07/22/2025 08 AM PDT            7.13            575         0              Normal
  07/22/2025 09 AM PDT            7.13            575         0              Normal
  07/22/2025 10 AM PDT            7.13            575         0              Normal
  07/22/2025 11 AM PDT            7.13            575         0              Normal
  07/22/2025 12 PM PDT            7.13            575         0              Normal
  07/22/2025 01 PM PDT            7.13            575         0              Normal
  07/22/2025 02 PM PDT            7.14            579         +              Normal
  07/22/2025 03 PM PDT            7.14            579         0              Normal
  07/22/2025 04 PM PDT            7.14            579         0              Normal
  07/22/2025 05 PM PDT            7.14            579         0              Normal
  07/22/2025 06 PM PDT            7.14            579         0              Normal
  07/22/2025 07 PM PDT            7.14            579         0              Normal
  07/22/2025 08 PM PDT            7.14            579         0              Normal
  07/22/2025 09 PM PDT            7.14            579         0              Normal
  07/22/2025 10 PM PDT            7.14            579         0              Normal
  07/22/2025 11 PM PDT            7.13            575         -              Normal
  07/23/2025 12 AM PDT            7.13            575         0              Normal
  07/23/2025 01 AM PDT            7.13            575         0              Normal
  07/23/2025 02 AM PDT            7.13            575         0              Normal
  07/23/2025 03 AM PDT            7.13            575         0              Normal
  07/23/2025 04 AM PDT            7.13            575         0              Normal
  07/23/2025 05 AM PDT            7.12            571         -              Normal
  07/23/2025 06 AM PDT            7.12            571         0              Normal
  07/23/2025 07 AM PDT            7.12            571         0              Normal
  07/23/2025 08 AM PDT            7.11            566         -              Normal
  07/23/2025 09 AM PDT            7.11            566         0              Normal
  07/23/2025 10 AM PDT            7.11            566         0              Normal
  07/23/2025 11 AM PDT            7.11            566         0              Normal
  07/23/2025 12 PM PDT            7.10            562         -              Normal
  07/23/2025 01 PM PDT            7.10            562         0              Normal
  07/23/2025 02 PM PDT            7.09            558         -              Normal
  07/23/2025 03 PM PDT            7.09            558         0              Normal
  07/23/2025 04 PM PDT            7.09            558         0              Normal
  07/23/2025 05 PM PDT            7.08            554         -              Normal
  07/23/2025 06 PM PDT            7.08            554         0              Normal
  07/23/2025 07 PM PDT            7.08            554         0              Normal
  07/23/2025 08 PM PDT            7.07            549         -              Normal
  07/23/2025 09 PM PDT            7.07            549         0              Normal
  07/23/2025 10 PM PDT            7.07            549         0              Normal
  07/23/2025 11 PM PDT            7.06            545         -              Normal
  07/24/2025 12 AM PDT            7.06            545         0              Normal
  07/24/2025 01 AM PDT            7.06            545         0              Normal
  07/24/2025 02 AM PDT            7.05            541         -              Normal
  07/24/2025 03 AM PDT            7.05            541         0              Normal
  07/24/2025 04 AM PDT            7.05            541         0              Normal
  07/24/2025 05 AM PDT            7.05            541         0              Normal
  07/24/2025 06 AM PDT            7.04            537         -              Normal
  07/24/2025 07 AM PDT            7.04            537         0              Normal
  07/24/2025 08 AM PDT            7.04            537         0              Normal
  07/24/2025 09 AM PDT            7.04            537         0              Normal
  07/24/2025 10 AM PDT            7.03            533         -              Normal
  07/24/2025 11 AM PDT            7.03            533         0              Normal
  07/24/2025 12 PM PDT            7.03            533         0              Normal
  07/24/2025 01 PM PDT            7.03            533         0              Normal
  07/24/2025 02 PM PDT            7.02            529         -              Normal
  07/24/2025 03 PM PDT            7.02            529         0              Normal
  07/24/2025 04 PM PDT            7.02            529         0              Normal
  07/24/2025 05 PM PDT            7.02            529         0              Normal
  07/24/2025 06 PM PDT            7.02            529         0              Normal
  07/24/2025 07 PM PDT            7.01            525         -              Normal
  07/24/2025 08 PM PDT            7.01            525         0              Normal
  07/24/2025 09 PM PDT            7.01            525         0              Normal
  07/24/2025 10 PM PDT            7.01            525         0              Normal
  07/24/2025 11 PM PDT            7.01            525         0              Normal
  07/25/2025 12 AM PDT            7.00            520         -              Normal
  07/25/2025 01 AM PDT            7.00            520         0              Normal
  07/25/2025 02 AM PDT            7.00            520         0              Normal
  07/25/2025 03 AM PDT            7.00            520         0              Normal
  07/25/2025 04 AM PDT            7.00            520         0              Normal
  07/25/2025 05 AM PDT            7.00            520         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.