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 09 2026 at 7:42 AM PDTNext Issuance: Aug 10 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:  08/09/2026 at 07:42 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  08/04/2026 at 07:00 AM PDT
# Maximum Observed Stage:                       7.73 Feet
# Maximum Observed Flow:                        891 cfs
#
# Earliest Date & Time of Maximum Forecast:     08/09/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       7.52 Feet
# Maximum Forecast Flow:                        786 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  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
  08/07/2026 08 AM PDT            7.26            663         0              Normal
  08/07/2026 09 AM PDT            7.24            654         -              Normal
  08/07/2026 10 AM PDT            7.27            667         +              Normal
  08/07/2026 11 AM PDT            7.29            677         +              Normal
  08/07/2026 12 PM PDT            7.26            663         -              Normal
  08/07/2026 01 PM PDT            7.25            658         -              Normal
  08/07/2026 02 PM PDT            7.27            667         +              Normal
  08/07/2026 03 PM PDT            7.26            663         -              Normal
  08/07/2026 04 PM PDT            7.25            658         -              Normal
  08/07/2026 05 PM PDT            7.24            654         -              Normal
  08/07/2026 06 PM PDT            7.25            658         +              Normal
  08/07/2026 07 PM PDT            7.23            649         -              Normal
  08/07/2026 08 PM PDT            7.26            663         +              Normal
  08/07/2026 09 PM PDT            7.26            663         0              Normal
  08/07/2026 10 PM PDT            7.26            663         0              Normal
  08/07/2026 11 PM PDT            7.27            667         +              Normal
  08/08/2026 12 AM PDT            7.29            677         +              Normal
  08/08/2026 01 AM PDT            7.31            686         +              Normal
  08/08/2026 02 AM PDT            7.34            700         +              Normal
  08/08/2026 03 AM PDT            7.37            714         +              Normal
  08/08/2026 04 AM PDT            7.36            709         -              Normal
  08/08/2026 05 AM PDT            7.41            733         +              Normal
  08/08/2026 06 AM PDT            7.42            737         +              Normal
  08/08/2026 07 AM PDT            7.44            747         +              Normal
  08/08/2026 08 AM PDT            7.41            733         -              Normal
  08/08/2026 09 AM PDT            7.43            742         +              Normal
  08/08/2026 10 AM PDT            7.45            752         +              Normal
  08/08/2026 11 AM PDT            7.47            761         +              Normal
  08/08/2026 12 PM PDT            7.50            776         +              Normal
  08/08/2026 01 PM PDT            7.50            776         0              Normal
  08/08/2026 02 PM PDT            7.49            771         -              Normal
  08/08/2026 03 PM PDT            7.49            771         0              Normal
  08/08/2026 04 PM PDT            7.48            766         -              Normal
  08/08/2026 05 PM PDT            7.49            771         +              Normal
  08/08/2026 06 PM PDT            7.46            756         -              Normal
  08/08/2026 07 PM PDT            7.47            761         +              Normal
  08/08/2026 08 PM PDT            7.46            756         -              Normal
  08/08/2026 09 PM PDT            7.48            766         +              Normal
  08/08/2026 10 PM PDT            7.47            761         -              Normal
  08/08/2026 11 PM PDT            7.47            761         0              Normal
  08/09/2026 12 AM PDT            7.47            761         0              Normal
  08/09/2026 01 AM PDT            7.47            761         0              Normal
  08/09/2026 02 AM PDT            7.49            771         +              Normal
  08/09/2026 03 AM PDT            7.50            776         +              Normal
  08/09/2026 04 AM PDT            7.51            781         +              Normal
  08/09/2026 05 AM PDT            7.52            786         +              Normal
  08/09/2026 06 AM PDT            7.52            786         0              Normal
  08/09/2026 07 AM PDT            7.52            786         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  08/09/2026 08 AM PDT            7.52            786                        Normal
  08/09/2026 09 AM PDT            7.52            786         0              Normal
  08/09/2026 10 AM PDT            7.52            786         0              Normal
  08/09/2026 11 AM PDT            7.52            786         0              Normal
  08/09/2026 12 PM PDT            7.52            786         0              Normal
  08/09/2026 01 PM PDT            7.52            786         0              Normal
  08/09/2026 02 PM PDT            7.51            781         -              Normal
  08/09/2026 03 PM PDT            7.51            781         0              Normal
  08/09/2026 04 PM PDT            7.51            781         0              Normal
  08/09/2026 05 PM PDT            7.51            781         0              Normal
  08/09/2026 06 PM PDT            7.51            781         0              Normal
  08/09/2026 07 PM PDT            7.51            781         0              Normal
  08/09/2026 08 PM PDT            7.51            781         0              Normal
  08/09/2026 09 PM PDT            7.50            776         -              Normal
  08/09/2026 10 PM PDT            7.50            776         0              Normal
  08/09/2026 11 PM PDT            7.50            776         0              Normal
  08/10/2026 12 AM PDT            7.50            776         0              Normal
  08/10/2026 01 AM PDT            7.50            776         0              Normal
  08/10/2026 02 AM PDT            7.49            771         -              Normal
  08/10/2026 03 AM PDT            7.49            771         0              Normal
  08/10/2026 04 AM PDT            7.48            766         -              Normal
  08/10/2026 05 AM PDT            7.48            766         0              Normal
  08/10/2026 06 AM PDT            7.48            766         0              Normal
  08/10/2026 07 AM PDT            7.47            761         -              Normal
  08/10/2026 08 AM PDT            7.47            761         0              Normal
  08/10/2026 09 AM PDT            7.46            756         -              Normal
  08/10/2026 10 AM PDT            7.46            756         0              Normal
  08/10/2026 11 AM PDT            7.46            756         0              Normal
  08/10/2026 12 PM PDT            7.45            752         -              Normal
  08/10/2026 01 PM PDT            7.45            752         0              Normal
  08/10/2026 02 PM PDT            7.45            752         0              Normal
  08/10/2026 03 PM PDT            7.44            747         -              Normal
  08/10/2026 04 PM PDT            7.44            747         0              Normal
  08/10/2026 05 PM PDT            7.43            742         -              Normal
  08/10/2026 06 PM PDT            7.43            742         0              Normal
  08/10/2026 07 PM PDT            7.43            742         0              Normal
  08/10/2026 08 PM PDT            7.42            737         -              Normal
  08/10/2026 09 PM PDT            7.42            737         0              Normal
  08/10/2026 10 PM PDT            7.42            737         0              Normal
  08/10/2026 11 PM PDT            7.41            733         -              Normal
  08/11/2026 12 AM PDT            7.41            733         0              Normal
  08/11/2026 01 AM PDT            7.41            733         0              Normal
  08/11/2026 02 AM PDT            7.40            728         -              Normal
  08/11/2026 03 AM PDT            7.40            728         0              Normal
  08/11/2026 04 AM PDT            7.40            728         0              Normal
  08/11/2026 05 AM PDT            7.39            723         -              Normal
  08/11/2026 06 AM PDT            7.39            723         0              Normal
  08/11/2026 07 AM PDT            7.39            723         0              Normal
  08/11/2026 08 AM PDT            7.38            718         -              Normal
  08/11/2026 09 AM PDT            7.38            718         0              Normal
  08/11/2026 10 AM PDT            7.38            718         0              Normal
  08/11/2026 11 AM PDT            7.38            718         0              Normal
  08/11/2026 12 PM PDT            7.38            718         0              Normal
  08/11/2026 01 PM PDT            7.37            714         -              Normal
  08/11/2026 02 PM PDT            7.37            714         0              Normal
  08/11/2026 03 PM PDT            7.37            714         0              Normal
  08/11/2026 04 PM PDT            7.37            714         0              Normal
  08/11/2026 05 PM PDT            7.36            709         -              Normal
  08/11/2026 06 PM PDT            7.36            709         0              Normal
  08/11/2026 07 PM PDT            7.36            709         0              Normal
  08/11/2026 08 PM PDT            7.36            709         0              Normal
  08/11/2026 09 PM PDT            7.35            704         -              Normal
  08/11/2026 10 PM PDT            7.35            704         0              Normal
  08/11/2026 11 PM PDT            7.35            704         0              Normal
  08/12/2026 12 AM PDT            7.35            704         0              Normal
  08/12/2026 01 AM PDT            7.34            700         -              Normal
  08/12/2026 02 AM PDT            7.34            700         0              Normal
  08/12/2026 03 AM PDT            7.34            700         0              Normal
  08/12/2026 04 AM PDT            7.34            700         0              Normal
  08/12/2026 05 AM PDT            7.34            700         0              Normal
  08/12/2026 06 AM PDT            7.33            695         -              Normal
  08/12/2026 07 AM PDT            7.33            695         0              Normal
  08/12/2026 08 AM PDT            7.33            695         0              Normal
  08/12/2026 09 AM PDT            7.33            695         0              Normal
  08/12/2026 10 AM PDT            7.33            695         0              Normal
  08/12/2026 11 AM PDT            7.33            695         0              Normal
  08/12/2026 12 PM PDT            7.33            695         0              Normal
  08/12/2026 01 PM PDT            7.32            690         -              Normal
  08/12/2026 02 PM PDT            7.32            690         0              Normal
  08/12/2026 03 PM PDT            7.32            690         0              Normal
  08/12/2026 04 PM PDT            7.32            690         0              Normal
  08/12/2026 05 PM PDT            7.32            690         0              Normal
  08/12/2026 06 PM PDT            7.32            690         0              Normal
  08/12/2026 07 PM PDT            7.31            686         -              Normal
  08/12/2026 08 PM PDT            7.31            686         0              Normal
  08/12/2026 09 PM PDT            7.31            686         0              Normal
  08/12/2026 10 PM PDT            7.31            686         0              Normal
  08/12/2026 11 PM PDT            7.31            686         0              Normal
  08/13/2026 12 AM PDT            7.31            686         0              Normal
  08/13/2026 01 AM PDT            7.31            686         0              Normal
  08/13/2026 02 AM PDT            7.30            681         -              Normal
  08/13/2026 03 AM PDT            7.30            681         0              Normal
  08/13/2026 04 AM PDT            7.30            681         0              Normal
  08/13/2026 05 AM PDT            7.30            681         0              Normal
  08/13/2026 06 AM PDT            7.30            681         0              Normal
  08/13/2026 07 AM PDT            7.30            681         0              Normal
  08/13/2026 08 AM PDT            7.30            681         0              Normal
  08/13/2026 09 AM PDT            7.30            681         0              Normal
  08/13/2026 10 AM PDT            7.30            681         0              Normal
  08/13/2026 11 AM PDT            7.30            681         0              Normal
  08/13/2026 12 PM PDT            7.29            677         -              Normal
  08/13/2026 01 PM PDT            7.29            677         0              Normal
  08/13/2026 02 PM PDT            7.29            677         0              Normal
  08/13/2026 03 PM PDT            7.29            677         0              Normal
  08/13/2026 04 PM PDT            7.29            677         0              Normal
  08/13/2026 05 PM PDT            7.29            677         0              Normal
  08/13/2026 06 PM PDT            7.29            677         0              Normal
  08/13/2026 07 PM PDT            7.29            677         0              Normal
  08/13/2026 08 PM PDT            7.29            677         0              Normal
  08/13/2026 09 PM PDT            7.29            677         0              Normal
  08/13/2026 10 PM PDT            7.29            677         0              Normal
  08/13/2026 11 PM PDT            7.29            677         0              Normal
  08/14/2026 12 AM PDT            7.29            677         0              Normal
  08/14/2026 01 AM PDT            7.29            677         0              Normal
  08/14/2026 02 AM PDT            7.29            677         0              Normal
  08/14/2026 03 AM PDT            7.28            672         -              Normal
  08/14/2026 04 AM PDT            7.28            672         0              Normal
  08/14/2026 05 AM PDT            7.28            672         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.