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 03 2026 at 7:48 AM PDTNext Issuance: Aug 04 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:  08/03/2026 at 07:48 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  08/03/2026 at 07:00 AM PDT
# Maximum Observed Stage:                       7.87 Feet
# Maximum Observed Flow:                        964 cfs
#
# Earliest Date & Time of Maximum Forecast:     08/04/2026 at 07:00 PM PDT
# Maximum Forecast Stage:                       7.96 Feet
# Maximum Forecast Flow:                        1013 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  07/29/2026 07 AM PDT            7.29            677                        Normal
  07/29/2026 08 AM PDT            7.30            681         +              Normal
  07/29/2026 09 AM PDT            7.31            686         +              Normal
  07/29/2026 10 AM PDT            7.29            677         -              Normal
  07/29/2026 11 AM PDT            7.29            677         0              Normal
  07/29/2026 12 PM PDT            7.26            663         -              Normal
  07/29/2026 01 PM PDT            7.24            654         -              Normal
  07/29/2026 02 PM PDT            7.27            667         +              Normal
  07/29/2026 03 PM PDT            7.22            645         -              Normal
  07/29/2026 04 PM PDT            7.21            640         -              Normal
  07/29/2026 05 PM PDT            7.18            627         -              Normal
  07/29/2026 06 PM PDT            7.18            627         0              Normal
  07/29/2026 07 PM PDT            7.16            618         -              Normal
  07/29/2026 08 PM PDT            7.17            623         +              Normal
  07/29/2026 09 PM PDT            7.16            618         -              Normal
  07/29/2026 10 PM PDT            7.14            609         -              Normal
  07/29/2026 11 PM PDT            7.13            605         -              Normal
  07/30/2026 12 AM PDT            7.12            601         -              Normal
  07/30/2026 01 AM PDT            7.12            601         0              Normal
  07/30/2026 02 AM PDT            7.12            601         0              Normal
  07/30/2026 03 AM PDT            7.12            601         0              Normal
  07/30/2026 04 AM PDT            7.12            601         0              Normal
  07/30/2026 05 AM PDT            7.13            605         +              Normal
  07/30/2026 06 AM PDT            7.13            605         0              Normal
  07/30/2026 07 AM PDT            7.14            609         +              Normal
  07/30/2026 08 AM PDT            7.14            609         0              Normal
  07/30/2026 09 AM PDT            7.14            609         0              Normal
  07/30/2026 10 AM PDT            7.15            614         +              Normal
  07/30/2026 11 AM PDT            7.14            609         -              Normal
  07/30/2026 12 PM PDT            7.13            605         -              Normal
  07/30/2026 01 PM PDT            7.10            592         -              Normal
  07/30/2026 02 PM PDT            7.08            583         -              Normal
  07/30/2026 03 PM PDT            7.05            571         -              Normal
  07/30/2026 04 PM PDT            7.04            566         -              Normal
  07/30/2026 05 PM PDT            7.04            566         0              Normal
  07/30/2026 06 PM PDT            7.04            566         0              Normal
  07/30/2026 07 PM PDT            7.05            571         +              Normal
  07/30/2026 08 PM PDT            7.04            566         -              Normal
  07/30/2026 09 PM PDT            7.04            566         0              Normal
  07/30/2026 10 PM PDT            7.08            583         +              Normal
  07/30/2026 11 PM PDT            7.08            583         0              Normal
  07/31/2026 12 AM PDT            7.08            583         0              Normal
  07/31/2026 01 AM PDT            7.09            588         +              Normal
  07/31/2026 02 AM PDT            7.10            592         +              Normal
  07/31/2026 03 AM PDT            7.11            596         +              Normal
  07/31/2026 04 AM PDT            7.13            605         +              Normal
  07/31/2026 05 AM PDT            7.15            614         +              Normal
  07/31/2026 06 AM PDT            7.17            623         +              Normal
  07/31/2026 07 AM PDT            7.20            636         +              Normal
  07/31/2026 08 AM PDT            7.20            636         0              Normal
  07/31/2026 09 AM PDT            7.23            649         +              Normal
  07/31/2026 10 AM PDT            7.25            658         +              Normal
  07/31/2026 11 AM PDT            7.26            663         +              Normal
  07/31/2026 12 PM PDT            7.24            654         -              Normal
  07/31/2026 01 PM PDT            7.23            649         -              Normal
  07/31/2026 02 PM PDT            7.23            649         0              Normal
  07/31/2026 03 PM PDT            7.26            663         +              Normal
  07/31/2026 04 PM PDT            7.23            649         -              Normal
  07/31/2026 05 PM PDT            7.22            645         -              Normal
  07/31/2026 06 PM PDT            7.20            636         -              Normal
  07/31/2026 07 PM PDT            7.19            631         -              Normal
  07/31/2026 08 PM PDT            7.21            640         +              Normal
  07/31/2026 09 PM PDT            7.21            640         0              Normal
  07/31/2026 10 PM PDT            7.20            636         -              Normal
  07/31/2026 11 PM PDT            7.21            640         +              Normal
  08/01/2026 12 AM PDT            7.21            640         0              Normal
  08/01/2026 01 AM PDT            7.22            645         +              Normal
  08/01/2026 02 AM PDT            7.23            649         +              Normal
  08/01/2026 03 AM PDT            7.25            658         +              Normal
  08/01/2026 04 AM PDT            7.26            663         +              Normal
  08/01/2026 05 AM PDT            7.28            672         +              Normal
  08/01/2026 06 AM PDT            7.30            681         +              Normal
  08/01/2026 07 AM PDT            7.32            690         +              Normal
  08/01/2026 08 AM PDT            7.34            700         +              Normal
  08/01/2026 09 AM PDT            7.34            700         0              Normal
  08/01/2026 10 AM PDT            7.36            709         +              Normal
  08/01/2026 11 AM PDT            7.36            709         0              Normal
  08/01/2026 12 PM PDT            7.38            718         +              Normal
  08/01/2026 01 PM PDT            7.40            728         +              Normal
  08/01/2026 02 PM PDT            7.43            742         +              Normal
  08/01/2026 03 PM PDT            7.44            747         +              Normal
  08/01/2026 04 PM PDT            7.45            752         +              Normal
  08/01/2026 05 PM PDT            7.48            766         +              Normal
  08/01/2026 06 PM PDT            7.48            766         0              Normal
  08/01/2026 07 PM PDT            7.48            766         0              Normal
  08/01/2026 08 PM PDT            7.49            771         +              Normal
  08/01/2026 09 PM PDT            7.50            776         +              Normal
  08/01/2026 10 PM PDT            7.51            781         +              Normal
  08/01/2026 11 PM PDT            7.53            790         +              Normal
  08/02/2026 12 AM PDT            7.55            800         +              Normal
  08/02/2026 01 AM PDT            7.57            810         +              Normal
  08/02/2026 02 AM PDT            7.59            820         +              Normal
  08/02/2026 03 AM PDT            7.61            830         +              Normal
  08/02/2026 04 AM PDT            7.62            835         +              Normal
  08/02/2026 05 AM PDT            7.64            845         +              Normal
  08/02/2026 06 AM PDT            7.65            850         +              Normal
  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            7.87            964         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  08/03/2026 08 AM PDT            7.88            970                        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            7.88            970         0              Normal
  08/03/2026 12 PM PDT            7.89            975         +              Normal
  08/03/2026 01 PM PDT            7.89            975         0              Normal
  08/03/2026 02 PM PDT            7.89            975         0              Normal
  08/03/2026 03 PM PDT            7.90            980         +              Normal
  08/03/2026 04 PM PDT            7.90            980         0              Normal
  08/03/2026 05 PM PDT            7.90            980         0              Normal
  08/03/2026 06 PM PDT            7.91            986         +              Normal
  08/03/2026 07 PM PDT            7.91            986         0              Normal
  08/03/2026 08 PM PDT            7.91            986         0              Normal
  08/03/2026 09 PM PDT            7.91            986         0              Normal
  08/03/2026 10 PM PDT            7.92            991         +              Normal
  08/03/2026 11 PM PDT            7.92            991         0              Normal
  08/04/2026 12 AM PDT            7.92            991         0              Normal
  08/04/2026 01 AM PDT            7.92            991         0              Normal
  08/04/2026 02 AM PDT            7.93            997         +              Normal
  08/04/2026 03 AM PDT            7.93            997         0              Normal
  08/04/2026 04 AM PDT            7.93            997         0              Normal
  08/04/2026 05 AM PDT            7.93            997         0              Normal
  08/04/2026 06 AM PDT            7.94           1002         +              Normal
  08/04/2026 07 AM PDT            7.94           1002         0              Normal
  08/04/2026 08 AM PDT            7.94           1002         0              Normal
  08/04/2026 09 AM PDT            7.94           1002         0              Normal
  08/04/2026 10 AM PDT            7.94           1002         0              Normal
  08/04/2026 11 AM PDT            7.95           1007         +              Normal
  08/04/2026 12 PM PDT            7.95           1007         0              Normal
  08/04/2026 01 PM PDT            7.95           1007         0              Normal
  08/04/2026 02 PM PDT            7.95           1007         0              Normal
  08/04/2026 03 PM PDT            7.95           1007         0              Normal
  08/04/2026 04 PM PDT            7.95           1007         0              Normal
  08/04/2026 05 PM PDT            7.95           1007         0              Normal
  08/04/2026 06 PM PDT            7.95           1007         0              Normal
  08/04/2026 07 PM PDT            7.96           1013         +              Normal
  08/04/2026 08 PM PDT            7.96           1013         0              Normal
  08/04/2026 09 PM PDT            7.96           1013         0              Normal
  08/04/2026 10 PM PDT            7.96           1013         0              Normal
  08/04/2026 11 PM PDT            7.96           1013         0              Normal
  08/05/2026 12 AM PDT            7.96           1013         0              Normal
  08/05/2026 01 AM PDT            7.96           1013         0              Normal
  08/05/2026 02 AM PDT            7.96           1013         0              Normal
  08/05/2026 03 AM PDT            7.96           1013         0              Normal
  08/05/2026 04 AM PDT            7.95           1007         -              Normal
  08/05/2026 05 AM PDT            7.95           1007         0              Normal
  08/05/2026 06 AM PDT            7.95           1007         0              Normal
  08/05/2026 07 AM PDT            7.95           1007         0              Normal
  08/05/2026 08 AM PDT            7.95           1007         0              Normal
  08/05/2026 09 AM PDT            7.95           1007         0              Normal
  08/05/2026 10 AM PDT            7.95           1007         0              Normal
  08/05/2026 11 AM PDT            7.95           1007         0              Normal
  08/05/2026 12 PM PDT            7.95           1007         0              Normal
  08/05/2026 01 PM PDT            7.94           1002         -              Normal
  08/05/2026 02 PM PDT            7.94           1002         0              Normal
  08/05/2026 03 PM PDT            7.94           1002         0              Normal
  08/05/2026 04 PM PDT            7.94           1002         0              Normal
  08/05/2026 05 PM PDT            7.93            997         -              Normal
  08/05/2026 06 PM PDT            7.93            997         0              Normal
  08/05/2026 07 PM PDT            7.93            997         0              Normal
  08/05/2026 08 PM PDT            7.93            997         0              Normal
  08/05/2026 09 PM PDT            7.92            991         -              Normal
  08/05/2026 10 PM PDT            7.92            991         0              Normal
  08/05/2026 11 PM PDT            7.92            991         0              Normal
  08/06/2026 12 AM PDT            7.91            986         -              Normal
  08/06/2026 01 AM PDT            7.91            986         0              Normal
  08/06/2026 02 AM PDT            7.91            986         0              Normal
  08/06/2026 03 AM PDT            7.90            980         -              Normal
  08/06/2026 04 AM PDT            7.90            980         0              Normal
  08/06/2026 05 AM PDT            7.90            980         0              Normal
  08/06/2026 06 AM PDT            7.89            975         -              Normal
  08/06/2026 07 AM PDT            7.89            975         0              Normal
  08/06/2026 08 AM PDT            7.88            970         -              Normal
  08/06/2026 09 AM PDT            7.88            970         0              Normal
  08/06/2026 10 AM PDT            7.88            970         0              Normal
  08/06/2026 11 AM PDT            7.87            964         -              Normal
  08/06/2026 12 PM PDT            7.87            964         0              Normal
  08/06/2026 01 PM PDT            7.86            959         -              Normal
  08/06/2026 02 PM PDT            7.86            959         0              Normal
  08/06/2026 03 PM PDT            7.86            959         0              Normal
  08/06/2026 04 PM PDT            7.85            954         -              Normal
  08/06/2026 05 PM PDT            7.85            954         0              Normal
  08/06/2026 06 PM PDT            7.84            948         -              Normal
  08/06/2026 07 PM PDT            7.84            948         0              Normal
  08/06/2026 08 PM PDT            7.83            943         -              Normal
  08/06/2026 09 PM PDT            7.83            943         0              Normal
  08/06/2026 10 PM PDT            7.83            943         0              Normal
  08/06/2026 11 PM PDT            7.82            938         -              Normal
  08/07/2026 12 AM PDT            7.82            938         0              Normal
  08/07/2026 01 AM PDT            7.82            938         0              Normal
  08/07/2026 02 AM PDT            7.81            933         -              Normal
  08/07/2026 03 AM PDT            7.81            933         0              Normal
  08/07/2026 04 AM PDT            7.80            927         -              Normal
  08/07/2026 05 AM PDT            7.80            927         0              Normal
  08/07/2026 06 AM PDT            7.80            927         0              Normal
  08/07/2026 07 AM PDT            7.79            922         -              Normal
  08/07/2026 08 AM PDT            7.79            922         0              Normal
  08/07/2026 09 AM PDT            7.79            922         0              Normal
  08/07/2026 10 AM PDT            7.78            917         -              Normal
  08/07/2026 11 AM PDT            7.78            917         0              Normal
  08/07/2026 12 PM PDT            7.78            917         0              Normal
  08/07/2026 01 PM PDT            7.77            912         -              Normal
  08/07/2026 02 PM PDT            7.77            912         0              Normal
  08/07/2026 03 PM PDT            7.77            912         0              Normal
  08/07/2026 04 PM PDT            7.76            906         -              Normal
  08/07/2026 05 PM PDT            7.76            906         0              Normal
  08/07/2026 06 PM PDT            7.76            906         0              Normal
  08/07/2026 07 PM PDT            7.76            906         0              Normal
  08/07/2026 08 PM PDT            7.75            901         -              Normal
  08/07/2026 09 PM PDT            7.75            901         0              Normal
  08/07/2026 10 PM PDT            7.75            901         0              Normal
  08/07/2026 11 PM PDT            7.75            901         0              Normal
  08/08/2026 12 AM PDT            7.74            896         -              Normal
  08/08/2026 01 AM PDT            7.74            896         0              Normal
  08/08/2026 02 AM PDT            7.74            896         0              Normal
  08/08/2026 03 AM PDT            7.74            896         0              Normal
  08/08/2026 04 AM PDT            7.74            896         0              Normal
  08/08/2026 05 AM PDT            7.73            891         -              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.