SAN JOAQUIN RIVER - VERNALIS (VNSC1)
Latitude: 37.68º NLongitude: 121.27º WElevation: 35 FeetForecast Type: Official Location
Location: San Joaquin County in CaliforniaBulletin Group: San JoaquinRiver Group: San Joaquin
Issuance Time: Sep 17 2026 at 6:56 AM PDTNext Issuance: Sep 18 2026 at 9:00 AM PDT
Action: 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:  09/17/2026 at 06:56 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  09/14/2026 at 08:00 AM PDT
# Maximum Observed Stage:                       7.36 Feet
# Maximum Observed Flow:                        709 cfs
#
# Earliest Date & Time of Maximum Forecast:     09/22/2026 at 02:00 AM PDT
# Maximum Forecast Stage:                       7.08 Feet
# Maximum Forecast Flow:                        583 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  09/12/2026 06 AM PDT            7.00            549                        Normal
  09/12/2026 07 AM PDT            7.01            554         +              Normal
  09/12/2026 08 AM PDT            7.02            558         +              Normal
  09/12/2026 09 AM PDT            7.02            558         0              Normal
  09/12/2026 10 AM PDT            7.03            562         +              Normal
  09/12/2026 11 AM PDT            7.03            562         0              Normal
  09/12/2026 12 PM PDT            7.04            566         +              Normal
  09/12/2026 01 PM PDT            7.02            558         -              Normal
  09/12/2026 02 PM PDT            7.00            549         -              Normal
  09/12/2026 03 PM PDT            6.97            537         -              Normal
  09/12/2026 04 PM PDT            6.97            537         0              Normal
  09/12/2026 05 PM PDT            6.97            537         0              Normal
  09/12/2026 06 PM PDT            6.94            525         -              Normal
  09/12/2026 07 PM PDT            6.95            529         +              Normal
  09/12/2026 08 PM PDT            6.95            529         0              Normal
  09/12/2026 09 PM PDT            6.95            529         0              Normal
  09/12/2026 10 PM PDT            6.97            537         +              Normal
  09/12/2026 11 PM PDT            7.02            558         +              Normal
  09/13/2026 12 AM PDT            7.06            575         +              Normal
  09/13/2026 01 AM PDT            7.08            583         +              Normal
  09/13/2026 02 AM PDT            7.10            592         +              Normal
  09/13/2026 03 AM PDT            7.10            592         0              Normal
  09/13/2026 04 AM PDT            7.13            605         +              Normal
  09/13/2026 05 AM PDT            7.18            627         +              Normal
  09/13/2026 06 AM PDT            7.17            623         -              Normal
  09/13/2026 07 AM PDT            7.20            636         +              Normal
  09/13/2026 08 AM PDT            7.18            627         -              Normal
  09/13/2026 09 AM PDT            7.15            614         -              Normal
  09/13/2026 10 AM PDT            7.13            605         -              Normal
  09/13/2026 11 AM PDT            7.13            605         0              Normal
  09/13/2026 12 PM PDT            7.13            605         0              Normal
  09/13/2026 01 PM PDT            7.14            609         +              Normal
  09/13/2026 02 PM PDT            7.15            614         +              Normal
  09/13/2026 03 PM PDT            7.14            609         -              Normal
  09/13/2026 04 PM PDT            7.17            623         +              Normal
  09/13/2026 05 PM PDT            7.17            623         0              Normal
  09/13/2026 06 PM PDT            7.19            631         +              Normal
  09/13/2026 07 PM PDT            7.21            640         +              Normal
  09/13/2026 08 PM PDT            7.23            649         +              Normal
  09/13/2026 09 PM PDT            7.24            654         +              Normal
  09/13/2026 10 PM PDT            7.24            654         0              Normal
  09/13/2026 11 PM PDT            7.25            658         +              Normal
  09/14/2026 12 AM PDT            7.25            658         0              Normal
  09/14/2026 01 AM PDT            7.27            667         +              Normal
  09/14/2026 02 AM PDT            7.28            672         +              Normal
  09/14/2026 03 AM PDT            7.30            681         +              Normal
  09/14/2026 04 AM PDT            7.31            686         +              Normal
  09/14/2026 05 AM PDT            7.33            695         +              Normal
  09/14/2026 06 AM PDT            7.34            700         +              Normal
  09/14/2026 07 AM PDT            7.34            700         0              Normal
  09/14/2026 08 AM PDT            7.36            709         +              Normal
  09/14/2026 09 AM PDT            7.32            690         -              Normal
  09/14/2026 10 AM PDT            7.32            690         0              Normal
  09/14/2026 11 AM PDT            7.31            686         -              Normal
  09/14/2026 12 PM PDT            7.31            686         0              Normal
  09/14/2026 01 PM PDT            7.29            677         -              Normal
  09/14/2026 02 PM PDT            7.29            677         0              Normal
  09/14/2026 03 PM PDT            7.29            677         0              Normal
  09/14/2026 04 PM PDT            7.28            672         -              Normal
  09/14/2026 05 PM PDT            7.25            658         -              Normal
  09/14/2026 06 PM PDT            7.24            654         -              Normal
  09/14/2026 07 PM PDT            7.27            667         +              Normal
  09/14/2026 08 PM PDT            7.25            658         -              Normal
  09/14/2026 09 PM PDT            7.24            654         -              Normal
  09/14/2026 10 PM PDT            7.22            645         -              Normal
  09/14/2026 11 PM PDT            7.21            640         -              Normal
  09/15/2026 12 AM PDT            7.20            636         -              Normal
  09/15/2026 01 AM PDT            7.20            636         0              Normal
  09/15/2026 02 AM PDT            7.20            636         0              Normal
  09/15/2026 03 AM PDT            7.19            631         -              Normal
  09/15/2026 04 AM PDT            7.19            631         0              Normal
  09/15/2026 05 AM PDT            7.19            631         0              Normal
  09/15/2026 06 AM PDT            7.18            627         -              Normal
  09/15/2026 07 AM PDT            7.18            627         0              Normal
  09/15/2026 08 AM PDT            7.19            631         +              Normal
  09/15/2026 09 AM PDT            7.18            627         -              Normal
  09/15/2026 10 AM PDT            7.17            623         -              Normal
  09/15/2026 11 AM PDT            7.17            623         0              Normal
  09/15/2026 12 PM PDT            7.16            618         -              Normal
  09/15/2026 01 PM PDT            7.16            618         0              Normal
  09/15/2026 02 PM PDT            7.13            605         -              Normal
  09/15/2026 03 PM PDT            7.14            609         +              Normal
  09/15/2026 04 PM PDT            7.11            596         -              Normal
  09/15/2026 05 PM PDT            7.11            596         0              Normal
  09/15/2026 06 PM PDT            7.04            566         -              Normal
  09/15/2026 07 PM PDT            7.06            575         +              Normal
  09/15/2026 08 PM PDT            7.06            575         0              Normal
  09/15/2026 09 PM PDT            7.05            571         -              Normal
  09/15/2026 10 PM PDT            7.01            554         -              Normal
  09/15/2026 11 PM PDT            6.99            545         -              Normal
  09/16/2026 12 AM PDT            7.02            558         +              Normal
  09/16/2026 01 AM PDT            7.02            558         0              Normal
  09/16/2026 02 AM PDT            7.01            554         -              Normal
  09/16/2026 03 AM PDT            7.03            562         +              Normal
  09/16/2026 04 AM PDT            7.04            566         +              Normal
  09/16/2026 05 AM PDT            7.05            571         +              Normal
  09/16/2026 06 AM PDT            7.05            571         0              Normal
  09/16/2026 07 AM PDT            7.07            579         +              Normal
  09/16/2026 08 AM PDT            7.07            579         0              Normal
  09/16/2026 09 AM PDT            7.08            583         +              Normal
  09/16/2026 10 AM PDT            7.07            579         -              Normal
  09/16/2026 11 AM PDT            7.08            583         +              Normal
  09/16/2026 12 PM PDT            7.08            583         0              Normal
  09/16/2026 01 PM PDT            7.05            571         -              Normal
  09/16/2026 02 PM PDT            7.05            571         0              Normal
  09/16/2026 03 PM PDT            7.05            571         0              Normal
  09/16/2026 04 PM PDT            7.02            558         -              Normal
  09/16/2026 05 PM PDT            7.01            554         -              Normal
  09/16/2026 06 PM PDT            7.01            554         0              Normal
  09/16/2026 07 PM PDT            6.99            545         -              Normal
  09/16/2026 08 PM PDT            6.98            541         -              Normal
  09/16/2026 09 PM PDT            6.96            533         -              Normal
  09/16/2026 10 PM PDT            6.97            537         +              Normal
  09/16/2026 11 PM PDT            6.97            537         0              Normal
  09/17/2026 12 AM PDT            6.96            533         -              Normal
  09/17/2026 01 AM PDT            6.96            533         0              Normal
  09/17/2026 02 AM PDT            6.97            537         +              Normal
  09/17/2026 03 AM PDT            6.98            541         +              Normal
  09/17/2026 04 AM PDT            6.99            545         +              Normal
  09/17/2026 05 AM PDT            7.00            549         +              Normal
  09/17/2026 06 AM PDT            7.00            549         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  09/17/2026 07 AM PDT            7.00            549                        Normal
  09/17/2026 08 AM PDT            7.00            549         0              Normal
  09/17/2026 09 AM PDT            7.00            549         0              Normal
  09/17/2026 10 AM PDT            6.99            545         -              Normal
  09/17/2026 11 AM PDT            6.99            545         0              Normal
  09/17/2026 12 PM PDT            6.99            545         0              Normal
  09/17/2026 01 PM PDT            6.99            545         0              Normal
  09/17/2026 02 PM PDT            6.99            545         0              Normal
  09/17/2026 03 PM PDT            6.99            545         0              Normal
  09/17/2026 04 PM PDT            6.99            545         0              Normal
  09/17/2026 05 PM PDT            6.98            541         -              Normal
  09/17/2026 06 PM PDT            6.98            541         0              Normal
  09/17/2026 07 PM PDT            6.98            541         0              Normal
  09/17/2026 08 PM PDT            6.98            541         0              Normal
  09/17/2026 09 PM PDT            6.98            541         0              Normal
  09/17/2026 10 PM PDT            6.98            541         0              Normal
  09/17/2026 11 PM PDT            6.98            541         0              Normal
  09/18/2026 12 AM PDT            6.98            541         0              Normal
  09/18/2026 01 AM PDT            6.97            537         -              Normal
  09/18/2026 02 AM PDT            6.97            537         0              Normal
  09/18/2026 03 AM PDT            6.97            537         0              Normal
  09/18/2026 04 AM PDT            6.97            537         0              Normal
  09/18/2026 05 AM PDT            6.97            537         0              Normal
  09/18/2026 06 AM PDT            6.97            537         0              Normal
  09/18/2026 07 AM PDT            6.97            537         0              Normal
  09/18/2026 08 AM PDT            6.97            537         0              Normal
  09/18/2026 09 AM PDT            6.97            537         0              Normal
  09/18/2026 10 AM PDT            6.97            537         0              Normal
  09/18/2026 11 AM PDT            6.97            537         0              Normal
  09/18/2026 12 PM PDT            6.97            537         0              Normal
  09/18/2026 01 PM PDT            6.97            537         0              Normal
  09/18/2026 02 PM PDT            6.97            537         0              Normal
  09/18/2026 03 PM PDT            6.97            537         0              Normal
  09/18/2026 04 PM PDT            6.97            537         0              Normal
  09/18/2026 05 PM PDT            6.97            537         0              Normal
  09/18/2026 06 PM PDT            6.97            537         0              Normal
  09/18/2026 07 PM PDT            6.97            537         0              Normal
  09/18/2026 08 PM PDT            6.97            537         0              Normal
  09/18/2026 09 PM PDT            6.98            541         +              Normal
  09/18/2026 10 PM PDT            6.98            541         0              Normal
  09/18/2026 11 PM PDT            6.98            541         0              Normal
  09/19/2026 12 AM PDT            6.98            541         0              Normal
  09/19/2026 01 AM PDT            6.98            541         0              Normal
  09/19/2026 02 AM PDT            6.98            541         0              Normal
  09/19/2026 03 AM PDT            6.98            541         0              Normal
  09/19/2026 04 AM PDT            6.99            545         +              Normal
  09/19/2026 05 AM PDT            6.99            545         0              Normal
  09/19/2026 06 AM PDT            6.99            545         0              Normal
  09/19/2026 07 AM PDT            6.99            545         0              Normal
  09/19/2026 08 AM PDT            6.99            545         0              Normal
  09/19/2026 09 AM PDT            7.00            549         +              Normal
  09/19/2026 10 AM PDT            7.00            549         0              Normal
  09/19/2026 11 AM PDT            7.00            549         0              Normal
  09/19/2026 12 PM PDT            7.00            549         0              Normal
  09/19/2026 01 PM PDT            7.00            549         0              Normal
  09/19/2026 02 PM PDT            7.00            549         0              Normal
  09/19/2026 03 PM PDT            7.01            554         +              Normal
  09/19/2026 04 PM PDT            7.01            554         0              Normal
  09/19/2026 05 PM PDT            7.01            554         0              Normal
  09/19/2026 06 PM PDT            7.01            554         0              Normal
  09/19/2026 07 PM PDT            7.02            558         +              Normal
  09/19/2026 08 PM PDT            7.02            558         0              Normal
  09/19/2026 09 PM PDT            7.02            558         0              Normal
  09/19/2026 10 PM PDT            7.02            558         0              Normal
  09/19/2026 11 PM PDT            7.02            558         0              Normal
  09/20/2026 12 AM PDT            7.03            562         +              Normal
  09/20/2026 01 AM PDT            7.03            562         0              Normal
  09/20/2026 02 AM PDT            7.03            562         0              Normal
  09/20/2026 03 AM PDT            7.03            562         0              Normal
  09/20/2026 04 AM PDT            7.03            562         0              Normal
  09/20/2026 05 AM PDT            7.03            562         0              Normal
  09/20/2026 06 AM PDT            7.04            566         +              Normal
  09/20/2026 07 AM PDT            7.04            566         0              Normal
  09/20/2026 08 AM PDT            7.04            566         0              Normal
  09/20/2026 09 AM PDT            7.04            566         0              Normal
  09/20/2026 10 AM PDT            7.04            566         0              Normal
  09/20/2026 11 AM PDT            7.04            566         0              Normal
  09/20/2026 12 PM PDT            7.04            566         0              Normal
  09/20/2026 01 PM PDT            7.04            566         0              Normal
  09/20/2026 02 PM PDT            7.05            571         +              Normal
  09/20/2026 03 PM PDT            7.05            571         0              Normal
  09/20/2026 04 PM PDT            7.05            571         0              Normal
  09/20/2026 05 PM PDT            7.05            571         0              Normal
  09/20/2026 06 PM PDT            7.05            571         0              Normal
  09/20/2026 07 PM PDT            7.05            571         0              Normal
  09/20/2026 08 PM PDT            7.05            571         0              Normal
  09/20/2026 09 PM PDT            7.05            571         0              Normal
  09/20/2026 10 PM PDT            7.06            575         +              Normal
  09/20/2026 11 PM PDT            7.06            575         0              Normal
  09/21/2026 12 AM PDT            7.06            575         0              Normal
  09/21/2026 01 AM PDT            7.06            575         0              Normal
  09/21/2026 02 AM PDT            7.06            575         0              Normal
  09/21/2026 03 AM PDT            7.06            575         0              Normal
  09/21/2026 04 AM PDT            7.06            575         0              Normal
  09/21/2026 05 AM PDT            7.06            575         0              Normal
  09/21/2026 06 AM PDT            7.06            575         0              Normal
  09/21/2026 07 AM PDT            7.06            575         0              Normal
  09/21/2026 08 AM PDT            7.06            575         0              Normal
  09/21/2026 09 AM PDT            7.07            579         +              Normal
  09/21/2026 10 AM PDT            7.07            579         0              Normal
  09/21/2026 11 AM PDT            7.07            579         0              Normal
  09/21/2026 12 PM PDT            7.07            579         0              Normal
  09/21/2026 01 PM PDT            7.07            579         0              Normal
  09/21/2026 02 PM PDT            7.07            579         0              Normal
  09/21/2026 03 PM PDT            7.07            579         0              Normal
  09/21/2026 04 PM PDT            7.07            579         0              Normal
  09/21/2026 05 PM PDT            7.07            579         0              Normal
  09/21/2026 06 PM PDT            7.07            579         0              Normal
  09/21/2026 07 PM PDT            7.07            579         0              Normal
  09/21/2026 08 PM PDT            7.07            579         0              Normal
  09/21/2026 09 PM PDT            7.07            579         0              Normal
  09/21/2026 10 PM PDT            7.07            579         0              Normal
  09/21/2026 11 PM PDT            7.07            579         0              Normal
  09/22/2026 12 AM PDT            7.07            579         0              Normal
  09/22/2026 01 AM PDT            7.07            579         0              Normal
  09/22/2026 02 AM PDT            7.08            583         +              Normal
  09/22/2026 03 AM PDT            7.08            583         0              Normal
  09/22/2026 04 AM PDT            7.08            583         0              Normal
  09/22/2026 05 AM PDT            7.08            583         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.