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: Aug 07 2026 at 7:40 AM PDTNext Issuance: Aug 08 2026 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:  08/07/2026 at 07:41 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  08/03/2026 at 10:00 AM PDT
# Maximum Observed Stage:                       7.88 Feet
# Maximum Observed Flow:                        970 cfs
#
# Earliest Date & Time of Maximum Forecast:     08/07/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       7.25 Feet
# Maximum Forecast Flow:                        658 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  08/02/2026 07 AM PDT            7.66            855                        Normal
  08/02/2026 08 AM PDT            7.66            855         0              Normal
  08/02/2026 09 AM PDT            7.68            865         +              Normal
  08/02/2026 10 AM PDT            7.68            865         0              Normal
  08/02/2026 11 AM PDT            7.66            855         -              Normal
  08/02/2026 12 PM PDT            7.67            860         +              Normal
  08/02/2026 01 PM PDT            7.68            865         +              Normal
  08/02/2026 02 PM PDT            7.67            860         -              Normal
  08/02/2026 03 PM PDT            7.68            865         +              Normal
  08/02/2026 04 PM PDT            7.69            870         +              Normal
  08/02/2026 05 PM PDT            7.71            881         +              Normal
  08/02/2026 06 PM PDT            7.72            886         +              Normal
  08/02/2026 07 PM PDT            7.71            881         -              Normal
  08/02/2026 08 PM PDT            7.73            891         +              Normal
  08/02/2026 09 PM PDT            7.74            896         +              Normal
  08/02/2026 10 PM PDT            7.76            906         +              Normal
  08/02/2026 11 PM PDT            7.77            912         +              Normal
  08/03/2026 12 AM PDT            7.78            917         +              Normal
  08/03/2026 01 AM PDT            7.80            927         +              Normal
  08/03/2026 02 AM PDT            7.82            938         +              Normal
  08/03/2026 03 AM PDT            7.83            943         +              Normal
  08/03/2026 04 AM PDT            7.85            954         +              Normal
  08/03/2026 05 AM PDT            7.87            964         +              Normal
  08/03/2026 06 AM PDT            7.87            964         0              Normal
  08/03/2026 07 AM PDT            7.88            970         +              Normal
  08/03/2026 08 AM PDT            7.88            970         0              Normal
  08/03/2026 09 AM PDT            7.88            970         0              Normal
  08/03/2026 10 AM PDT            7.88            970         0              Normal
  08/03/2026 11 AM PDT            7.85            954         -              Normal
  08/03/2026 12 PM PDT            7.83            943         -              Normal
  08/03/2026 01 PM PDT            7.82            938         -              Normal
  08/03/2026 02 PM PDT            7.83            943         +              Normal
  08/03/2026 03 PM PDT            7.81            933         -              Normal
  08/03/2026 04 PM PDT            7.81            933         0              Normal
  08/03/2026 05 PM PDT            7.79            922         -              Normal
  08/03/2026 06 PM PDT            7.78            917         -              Normal
  08/03/2026 07 PM PDT            7.78            917         0              Normal
  08/03/2026 08 PM PDT            7.76            906         -              Normal
  08/03/2026 09 PM PDT            7.75            901         -              Normal
  08/03/2026 10 PM PDT            7.74            896         -              Normal
  08/03/2026 11 PM PDT            7.73            891         -              Normal
  08/04/2026 12 AM PDT            7.72            886         -              Normal
  08/04/2026 01 AM PDT            7.73            891         +              Normal
  08/04/2026 02 AM PDT            7.72            886         -              Normal
  08/04/2026 03 AM PDT            7.73            891         +              Normal
  08/04/2026 04 AM PDT            7.73            891         0              Normal
  08/04/2026 05 AM PDT            7.73            891         0              Normal
  08/04/2026 06 AM PDT            7.74            896         +              Normal
  08/04/2026 07 AM PDT            7.73            891         -              Normal
  08/04/2026 08 AM PDT            7.72            886         -              Normal
  08/04/2026 09 AM PDT            7.71            881         -              Normal
  08/04/2026 10 AM PDT            7.70            876         -              Normal
  08/04/2026 11 AM PDT            7.69            870         -              Normal
  08/04/2026 12 PM PDT            7.67            860         -              Normal
  08/04/2026 01 PM PDT            7.66            855         -              Normal
  08/04/2026 02 PM PDT            7.67            860         +              Normal
  08/04/2026 03 PM PDT            7.67            860         0              Normal
  08/04/2026 04 PM PDT            7.64            845         -              Normal
  08/04/2026 05 PM PDT            7.61            830         -              Normal
  08/04/2026 06 PM PDT            7.59            820         -              Normal
  08/04/2026 07 PM PDT            7.58            815         -              Normal
  08/04/2026 08 PM PDT            7.57            810         -              Normal
  08/04/2026 09 PM PDT            7.58            815         +              Normal
  08/04/2026 10 PM PDT            7.56            805         -              Normal
  08/04/2026 11 PM PDT            7.57            810         +              Normal
  08/05/2026 12 AM PDT            7.57            810         0              Normal
  08/05/2026 01 AM PDT            7.56            805         -              Normal
  08/05/2026 02 AM PDT            7.55            800         -              Normal
  08/05/2026 03 AM PDT            7.55            800         0              Normal
  08/05/2026 04 AM PDT            7.54            795         -              Normal
  08/05/2026 05 AM PDT            7.54            795         0              Normal
  08/05/2026 06 AM PDT            7.53            790         -              Normal
  08/05/2026 07 AM PDT            7.50            776         -              Normal
  08/05/2026 08 AM PDT            7.48            766         -              Normal
  08/05/2026 09 AM PDT            7.48            766         0              Normal
  08/05/2026 10 AM PDT            7.47            761         -              Normal
  08/05/2026 11 AM PDT            7.47            761         0              Normal
  08/05/2026 12 PM PDT            7.46            756         -              Normal
  08/05/2026 01 PM PDT            7.44            747         -              Normal
  08/05/2026 02 PM PDT            7.44            747         0              Normal
  08/05/2026 03 PM PDT            7.43            742         -              Normal
  08/05/2026 04 PM PDT            7.42            737         -              Normal
  08/05/2026 05 PM PDT            7.40            728         -              Normal
  08/05/2026 06 PM PDT            7.40            728         0              Normal
  08/05/2026 07 PM PDT            7.36            709         -              Normal
  08/05/2026 08 PM PDT            7.38            718         +              Normal
  08/05/2026 09 PM PDT            7.36            709         -              Normal
  08/05/2026 10 PM PDT            7.33            695         -              Normal
  08/05/2026 11 PM PDT            7.34            700         +              Normal
  08/06/2026 12 AM PDT            7.32            690         -              Normal
  08/06/2026 01 AM PDT            7.34            700         +              Normal
  08/06/2026 02 AM PDT            7.36            709         +              Normal
  08/06/2026 03 AM PDT            7.38            718         +              Normal
  08/06/2026 04 AM PDT            7.39            723         +              Normal
  08/06/2026 05 AM PDT            7.41            733         +              Normal
  08/06/2026 06 AM PDT            7.42            737         +              Normal
  08/06/2026 07 AM PDT            7.42            737         0              Normal
  08/06/2026 08 AM PDT            7.40            728         -              Normal
  08/06/2026 09 AM PDT            7.38            718         -              Normal
  08/06/2026 10 AM PDT            7.37            714         -              Normal
  08/06/2026 11 AM PDT            7.38            718         +              Normal
  08/06/2026 12 PM PDT            7.35            704         -              Normal
  08/06/2026 01 PM PDT            7.32            690         -              Normal
  08/06/2026 02 PM PDT            7.31            686         -              Normal
  08/06/2026 03 PM PDT            7.29            677         -              Normal
  08/06/2026 04 PM PDT            7.26            663         -              Normal
  08/06/2026 05 PM PDT            7.25            658         -              Normal
  08/06/2026 06 PM PDT            7.22            645         -              Normal
  08/06/2026 07 PM PDT            7.24            654         +              Normal
  08/06/2026 08 PM PDT            7.22            645         -              Normal
  08/06/2026 09 PM PDT            7.22            645         0              Normal
  08/06/2026 10 PM PDT            7.24            654         +              Normal
  08/06/2026 11 PM PDT            7.24            654         0              Normal
  08/07/2026 12 AM PDT            7.24            654         0              Normal
  08/07/2026 01 AM PDT            7.24            654         0              Normal
  08/07/2026 02 AM PDT            7.24            654         0              Normal
  08/07/2026 03 AM PDT            7.25            658         +              Normal
  08/07/2026 04 AM PDT            7.25            658         0              Normal
  08/07/2026 05 AM PDT            7.26            663         +              Normal
  08/07/2026 06 AM PDT            7.26            663         0              Normal
  08/07/2026 07 AM PDT            7.26            663         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  08/07/2026 08 AM PDT            7.25            658                        Normal
  08/07/2026 09 AM PDT            7.25            658         0              Normal
  08/07/2026 10 AM PDT            7.25            658         0              Normal
  08/07/2026 11 AM PDT            7.25            658         0              Normal
  08/07/2026 12 PM PDT            7.25            658         0              Normal
  08/07/2026 01 PM PDT            7.24            654         -              Normal
  08/07/2026 02 PM PDT            7.24            654         0              Normal
  08/07/2026 03 PM PDT            7.24            654         0              Normal
  08/07/2026 04 PM PDT            7.24            654         0              Normal
  08/07/2026 05 PM PDT            7.23            649         -              Normal
  08/07/2026 06 PM PDT            7.23            649         0              Normal
  08/07/2026 07 PM PDT            7.23            649         0              Normal
  08/07/2026 08 PM PDT            7.22            645         -              Normal
  08/07/2026 09 PM PDT            7.22            645         0              Normal
  08/07/2026 10 PM PDT            7.21            640         -              Normal
  08/07/2026 11 PM PDT            7.21            640         0              Normal
  08/08/2026 12 AM PDT            7.21            640         0              Normal
  08/08/2026 01 AM PDT            7.20            636         -              Normal
  08/08/2026 02 AM PDT            7.20            636         0              Normal
  08/08/2026 03 AM PDT            7.20            636         0              Normal
  08/08/2026 04 AM PDT            7.19            631         -              Normal
  08/08/2026 05 AM PDT            7.19            631         0              Normal
  08/08/2026 06 AM PDT            7.18            627         -              Normal
  08/08/2026 07 AM PDT            7.18            627         0              Normal
  08/08/2026 08 AM PDT            7.17            623         -              Normal
  08/08/2026 09 AM PDT            7.17            623         0              Normal
  08/08/2026 10 AM PDT            7.16            618         -              Normal
  08/08/2026 11 AM PDT            7.16            618         0              Normal
  08/08/2026 12 PM PDT            7.15            614         -              Normal
  08/08/2026 01 PM PDT            7.15            614         0              Normal
  08/08/2026 02 PM PDT            7.14            609         -              Normal
  08/08/2026 03 PM PDT            7.14            609         0              Normal
  08/08/2026 04 PM PDT            7.13            605         -              Normal
  08/08/2026 05 PM PDT            7.13            605         0              Normal
  08/08/2026 06 PM PDT            7.12            601         -              Normal
  08/08/2026 07 PM PDT            7.12            601         0              Normal
  08/08/2026 08 PM PDT            7.11            596         -              Normal
  08/08/2026 09 PM PDT            7.11            596         0              Normal
  08/08/2026 10 PM PDT            7.10            592         -              Normal
  08/08/2026 11 PM PDT            7.09            588         -              Normal
  08/09/2026 12 AM PDT            7.09            588         0              Normal
  08/09/2026 01 AM PDT            7.08            583         -              Normal
  08/09/2026 02 AM PDT            7.08            583         0              Normal
  08/09/2026 03 AM PDT            7.07            579         -              Normal
  08/09/2026 04 AM PDT            7.07            579         0              Normal
  08/09/2026 05 AM PDT            7.06            575         -              Normal
  08/09/2026 06 AM PDT            7.05            571         -              Normal
  08/09/2026 07 AM PDT            7.05            571         0              Normal
  08/09/2026 08 AM PDT            7.04            566         -              Normal
  08/09/2026 09 AM PDT            7.04            566         0              Normal
  08/09/2026 10 AM PDT            7.03            562         -              Normal
  08/09/2026 11 AM PDT            7.03            562         0              Normal
  08/09/2026 12 PM PDT            7.02            558         -              Normal
  08/09/2026 01 PM PDT            7.01            554         -              Normal
  08/09/2026 02 PM PDT            7.01            554         0              Normal
  08/09/2026 03 PM PDT            7.00            549         -              Normal
  08/09/2026 04 PM PDT            7.00            549         0              Normal
  08/09/2026 05 PM PDT            6.99            545         -              Normal
  08/09/2026 06 PM PDT            6.98            541         -              Normal
  08/09/2026 07 PM PDT            6.98            541         0              Normal
  08/09/2026 08 PM PDT            6.97            537         -              Normal
  08/09/2026 09 PM PDT            6.96            533         -              Normal
  08/09/2026 10 PM PDT            6.96            533         0              Normal
  08/09/2026 11 PM PDT            6.95            529         -              Normal
  08/10/2026 12 AM PDT            6.95            529         0              Normal
  08/10/2026 01 AM PDT            6.94            525         -              Normal
  08/10/2026 02 AM PDT            6.93            520         -              Normal
  08/10/2026 03 AM PDT            6.92            516         -              Normal
  08/10/2026 04 AM PDT            6.92            516         0              Normal
  08/10/2026 05 AM PDT            6.91            512         -              Normal
  08/10/2026 06 AM PDT            6.91            512         0              Normal
  08/10/2026 07 AM PDT            6.90            508         -              Normal
  08/10/2026 08 AM PDT            6.89            504         -              Normal
  08/10/2026 09 AM PDT            6.88            500         -              Normal
  08/10/2026 10 AM PDT            6.88            500         0              Normal
  08/10/2026 11 AM PDT            6.87            496         -              Normal
  08/10/2026 12 PM PDT            6.86            492         -              Normal
  08/10/2026 01 PM PDT            6.86            492         0              Normal
  08/10/2026 02 PM PDT            6.85            488         -              Normal
  08/10/2026 03 PM PDT            6.84            484         -              Normal
  08/10/2026 04 PM PDT            6.83            480         -              Normal
  08/10/2026 05 PM PDT            6.83            480         0              Normal
  08/10/2026 06 PM PDT            6.82            476         -              Normal
  08/10/2026 07 PM PDT            6.81            472         -              Normal
  08/10/2026 08 PM PDT            6.81            472         0              Normal
  08/10/2026 09 PM PDT            6.80            468         -              Normal
  08/10/2026 10 PM PDT            6.79            465         -              Normal
  08/10/2026 11 PM PDT            6.78            461         -              Normal
  08/11/2026 12 AM PDT            6.78            461         0              Normal
  08/11/2026 01 AM PDT            6.77            457         -              Normal
  08/11/2026 02 AM PDT            6.76            453         -              Normal
  08/11/2026 03 AM PDT            6.76            453         0              Normal
  08/11/2026 04 AM PDT            6.75            449         -              Normal
  08/11/2026 05 AM PDT            6.74            445         -              Normal
  08/11/2026 06 AM PDT            6.74            445         0              Normal
  08/11/2026 07 AM PDT            6.73            441         -              Normal
  08/11/2026 08 AM PDT            6.72            438         -              Normal
  08/11/2026 09 AM PDT            6.72            438         0              Normal
  08/11/2026 10 AM PDT            6.71            434         -              Normal
  08/11/2026 11 AM PDT            6.70            430         -              Normal
  08/11/2026 12 PM PDT            6.70            430         0              Normal
  08/11/2026 01 PM PDT            6.69            426         -              Normal
  08/11/2026 02 PM PDT            6.68            423         -              Normal
  08/11/2026 03 PM PDT            6.68            423         0              Normal
  08/11/2026 04 PM PDT            6.67            419         -              Normal
  08/11/2026 05 PM PDT            6.67            419         0              Normal
  08/11/2026 06 PM PDT            6.66            415         -              Normal
  08/11/2026 07 PM PDT            6.66            415         0              Normal
  08/11/2026 08 PM PDT            6.65            411         -              Normal
  08/11/2026 09 PM PDT            6.64            408         -              Normal
  08/11/2026 10 PM PDT            6.64            408         0              Normal
  08/11/2026 11 PM PDT            6.63            404         -              Normal
  08/12/2026 12 AM PDT            6.63            404         0              Normal
  08/12/2026 01 AM PDT            6.62            400         -              Normal
  08/12/2026 02 AM PDT            6.62            400         0              Normal
  08/12/2026 03 AM PDT            6.62            400         0              Normal
  08/12/2026 04 AM PDT            6.61            397         -              Normal
  08/12/2026 05 AM PDT            6.61            397         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.