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: Jul 22 2026 at 8:12 AM PDTNext Issuance: Jul 23 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:  07/22/2026 at 08:13 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  07/19/2026 at 07:00 PM PDT
# Maximum Observed Stage:                       7.31 Feet
# Maximum Observed Flow:                        686 cfs
#
# Earliest Date & Time of Maximum Forecast:     07/27/2026 at 04:00 AM PDT
# Maximum Forecast Stage:                       7.78 Feet
# Maximum Forecast Flow:                        917 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  07/17/2026 08 AM PDT            7.03            562                        Normal
  07/17/2026 09 AM PDT            7.02            558         -              Normal
  07/17/2026 10 AM PDT            7.01            554         -              Normal
  07/17/2026 11 AM PDT            7.00            549         -              Normal
  07/17/2026 12 PM PDT            6.99            545         -              Normal
  07/17/2026 01 PM PDT            6.97            537         -              Normal
  07/17/2026 02 PM PDT            6.96            533         -              Normal
  07/17/2026 03 PM PDT            6.95            529         -              Normal
  07/17/2026 04 PM PDT            6.92            516         -              Normal
  07/17/2026 05 PM PDT            6.91            512         -              Normal
  07/17/2026 06 PM PDT            6.88            500         -              Normal
  07/17/2026 07 PM PDT            6.88            500         0              Normal
  07/17/2026 08 PM PDT            6.88            500         0              Normal
  07/17/2026 09 PM PDT            6.87            496         -              Normal
  07/17/2026 10 PM PDT            6.87            496         0              Normal
  07/17/2026 11 PM PDT            6.88            500         +              Normal
  07/18/2026 12 AM PDT            6.89            504         +              Normal
  07/18/2026 01 AM PDT            6.89            504         0              Normal
  07/18/2026 02 AM PDT            6.89            504         0              Normal
  07/18/2026 03 AM PDT            6.90            508         +              Normal
  07/18/2026 04 AM PDT            6.90            508         0              Normal
  07/18/2026 05 AM PDT            6.91            512         +              Normal
  07/18/2026 06 AM PDT            6.92            516         +              Normal
  07/18/2026 07 AM PDT            6.91            512         -              Normal
  07/18/2026 08 AM PDT            6.90            508         -              Normal
  07/18/2026 09 AM PDT            6.90            508         0              Normal
  07/18/2026 10 AM PDT            6.92            516         +              Normal
  07/18/2026 11 AM PDT            6.93            520         +              Normal
  07/18/2026 12 PM PDT            6.96            533         +              Normal
  07/18/2026 01 PM PDT            6.96            533         0              Normal
  07/18/2026 02 PM PDT            6.98            541         +              Normal
  07/18/2026 03 PM PDT            6.96            533         -              Normal
  07/18/2026 04 PM PDT            6.96            533         0              Normal
  07/18/2026 05 PM PDT            6.95            529         -              Normal
  07/18/2026 06 PM PDT            6.96            533         +              Normal
  07/18/2026 07 PM PDT            6.96            533         0              Normal
  07/18/2026 08 PM PDT            7.00            549         +              Normal
  07/18/2026 09 PM PDT            7.02            558         +              Normal
  07/18/2026 10 PM PDT            7.01            554         -              Normal
  07/18/2026 11 PM PDT            7.02            558         +              Normal
  07/19/2026 12 AM PDT            7.05            571         +              Normal
  07/19/2026 01 AM PDT            7.07            579         +              Normal
  07/19/2026 02 AM PDT            7.08            583         +              Normal
  07/19/2026 03 AM PDT            7.09            588         +              Normal
  07/19/2026 04 AM PDT            7.11            596         +              Normal
  07/19/2026 05 AM PDT            7.13            605         +              Normal
  07/19/2026 06 AM PDT            7.16            618         +              Normal
  07/19/2026 07 AM PDT            7.16            618         0              Normal
  07/19/2026 08 AM PDT            7.18            627         +              Normal
  07/19/2026 09 AM PDT            7.21            640         +              Normal
  07/19/2026 10 AM PDT            7.23            649         +              Normal
  07/19/2026 11 AM PDT            7.25            658         +              Normal
  07/19/2026 12 PM PDT            7.27            667         +              Normal
  07/19/2026 01 PM PDT            7.28            672         +              Normal
  07/19/2026 02 PM PDT            7.28            672         0              Normal
  07/19/2026 03 PM PDT            7.29            677         +              Normal
  07/19/2026 04 PM PDT            7.30            681         +              Normal
  07/19/2026 05 PM PDT            7.31            686         +              Normal
  07/19/2026 06 PM PDT            7.29            677         -              Normal
  07/19/2026 07 PM PDT            7.31            686         +              Normal
  07/19/2026 08 PM PDT            7.29            677         -              Normal
  07/19/2026 09 PM PDT            7.28            672         -              Normal
  07/19/2026 10 PM PDT            7.25            658         -              Normal
  07/19/2026 11 PM PDT            7.27            667         +              Normal
  07/20/2026 12 AM PDT            7.27            667         0              Normal
  07/20/2026 01 AM PDT            7.27            667         0              Normal
  07/20/2026 02 AM PDT            7.27            667         0              Normal
  07/20/2026 03 AM PDT            7.27            667         0              Normal
  07/20/2026 04 AM PDT            7.25            658         -              Normal
  07/20/2026 05 AM PDT            7.27            667         +              Normal
  07/20/2026 06 AM PDT            7.27            667         0              Normal
  07/20/2026 07 AM PDT            7.24            654         -              Normal
  07/20/2026 08 AM PDT            7.25            658         +              Normal
  07/20/2026 09 AM PDT            7.24            654         -              Normal
  07/20/2026 10 AM PDT            7.22            645         -              Normal
  07/20/2026 11 AM PDT            7.23            649         +              Normal
  07/20/2026 12 PM PDT            7.21            640         -              Normal
  07/20/2026 01 PM PDT            7.16            618         -              Normal
  07/20/2026 02 PM PDT            7.14            609         -              Normal
  07/20/2026 03 PM PDT            7.09            588         -              Normal
  07/20/2026 04 PM PDT            7.06            575         -              Normal
  07/20/2026 05 PM PDT            7.03            562         -              Normal
  07/20/2026 06 PM PDT            7.00            549         -              Normal
  07/20/2026 07 PM PDT            7.02            558         +              Normal
  07/20/2026 08 PM PDT            7.01            554         -              Normal
  07/20/2026 09 PM PDT            7.00            549         -              Normal
  07/20/2026 10 PM PDT            6.99            545         -              Normal
  07/20/2026 11 PM PDT            6.98            541         -              Normal
  07/21/2026 12 AM PDT            6.97            537         -              Normal
  07/21/2026 01 AM PDT            6.96            533         -              Normal
  07/21/2026 02 AM PDT            6.95            529         -              Normal
  07/21/2026 03 AM PDT            6.95            529         0              Normal
  07/21/2026 04 AM PDT            6.95            529         0              Normal
  07/21/2026 05 AM PDT            6.95            529         0              Normal
  07/21/2026 06 AM PDT            6.95            529         0              Normal
  07/21/2026 07 AM PDT            6.94            525         -              Normal
  07/21/2026 08 AM PDT            6.94            525         0              Normal
  07/21/2026 09 AM PDT            6.94            525         0              Normal
  07/21/2026 10 AM PDT            6.93            520         -              Normal
  07/21/2026 11 AM PDT            6.93            520         0              Normal
  07/21/2026 12 PM PDT            6.92            516         -              Normal
  07/21/2026 01 PM PDT            6.91            512         -              Normal
  07/21/2026 02 PM PDT            6.90            508         -              Normal
  07/21/2026 03 PM PDT            6.90            508         0              Normal
  07/21/2026 04 PM PDT            6.86            492         -              Normal
  07/21/2026 05 PM PDT            6.85            488         -              Normal
  07/21/2026 06 PM PDT            6.84            484         -              Normal
  07/21/2026 07 PM PDT            6.83            480         -              Normal
  07/21/2026 08 PM PDT            6.84            484         +              Normal
  07/21/2026 09 PM PDT            6.83            480         -              Normal
  07/21/2026 10 PM PDT            6.83            480         0              Normal
  07/21/2026 11 PM PDT            6.83            480         0              Normal
  07/22/2026 12 AM PDT            6.83            480         0              Normal
  07/22/2026 01 AM PDT            6.82            476         -              Normal
  07/22/2026 02 AM PDT            6.84            484         +              Normal
  07/22/2026 03 AM PDT            6.85            488         +              Normal
  07/22/2026 04 AM PDT            6.86            492         +              Normal
  07/22/2026 05 AM PDT            6.86            492         0              Normal
  07/22/2026 06 AM PDT            6.86            492         0              Normal
  07/22/2026 07 AM PDT            6.85            488         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  07/22/2026 08 AM PDT            6.84            484                        Normal
  07/22/2026 09 AM PDT            6.84            484         0              Normal
  07/22/2026 10 AM PDT            6.83            480         -              Normal
  07/22/2026 11 AM PDT            6.83            480         0              Normal
  07/22/2026 12 PM PDT            6.82            476         -              Normal
  07/22/2026 01 PM PDT            6.82            476         0              Normal
  07/22/2026 02 PM PDT            6.81            472         -              Normal
  07/22/2026 03 PM PDT            6.81            472         0              Normal
  07/22/2026 04 PM PDT            6.80            468         -              Normal
  07/22/2026 05 PM PDT            6.80            468         0              Normal
  07/22/2026 06 PM PDT            6.80            468         0              Normal
  07/22/2026 07 PM PDT            6.79            465         -              Normal
  07/22/2026 08 PM PDT            6.79            465         0              Normal
  07/22/2026 09 PM PDT            6.79            465         0              Normal
  07/22/2026 10 PM PDT            6.79            465         0              Normal
  07/22/2026 11 PM PDT            6.79            465         0              Normal
  07/23/2026 12 AM PDT            6.79            465         0              Normal
  07/23/2026 01 AM PDT            6.79            465         0              Normal
  07/23/2026 02 AM PDT            6.79            465         0              Normal
  07/23/2026 03 AM PDT            6.78            461         -              Normal
  07/23/2026 04 AM PDT            6.78            461         0              Normal
  07/23/2026 05 AM PDT            6.78            461         0              Normal
  07/23/2026 06 AM PDT            6.78            461         0              Normal
  07/23/2026 07 AM PDT            6.78            461         0              Normal
  07/23/2026 08 AM PDT            6.78            461         0              Normal
  07/23/2026 09 AM PDT            6.78            461         0              Normal
  07/23/2026 10 AM PDT            6.78            461         0              Normal
  07/23/2026 11 AM PDT            6.78            461         0              Normal
  07/23/2026 12 PM PDT            6.78            461         0              Normal
  07/23/2026 01 PM PDT            6.78            461         0              Normal
  07/23/2026 02 PM PDT            6.78            461         0              Normal
  07/23/2026 03 PM PDT            6.78            461         0              Normal
  07/23/2026 04 PM PDT            6.78            461         0              Normal
  07/23/2026 05 PM PDT            6.78            461         0              Normal
  07/23/2026 06 PM PDT            6.78            461         0              Normal
  07/23/2026 07 PM PDT            6.78            461         0              Normal
  07/23/2026 08 PM PDT            6.78            461         0              Normal
  07/23/2026 09 PM PDT            6.78            461         0              Normal
  07/23/2026 10 PM PDT            6.79            465         +              Normal
  07/23/2026 11 PM PDT            6.79            465         0              Normal
  07/24/2026 12 AM PDT            6.79            465         0              Normal
  07/24/2026 01 AM PDT            6.80            468         +              Normal
  07/24/2026 02 AM PDT            6.80            468         0              Normal
  07/24/2026 03 AM PDT            6.81            472         +              Normal
  07/24/2026 04 AM PDT            6.82            476         +              Normal
  07/24/2026 05 AM PDT            6.83            480         +              Normal
  07/24/2026 06 AM PDT            6.83            480         0              Normal
  07/24/2026 07 AM PDT            6.84            484         +              Normal
  07/24/2026 08 AM PDT            6.86            492         +              Normal
  07/24/2026 09 AM PDT            6.87            496         +              Normal
  07/24/2026 10 AM PDT            6.88            500         +              Normal
  07/24/2026 11 AM PDT            6.89            504         +              Normal
  07/24/2026 12 PM PDT            6.91            512         +              Normal
  07/24/2026 01 PM PDT            6.92            516         +              Normal
  07/24/2026 02 PM PDT            6.94            525         +              Normal
  07/24/2026 03 PM PDT            6.95            529         +              Normal
  07/24/2026 04 PM PDT            6.97            537         +              Normal
  07/24/2026 05 PM PDT            6.99            545         +              Normal
  07/24/2026 06 PM PDT            7.00            549         +              Normal
  07/24/2026 07 PM PDT            7.02            558         +              Normal
  07/24/2026 08 PM PDT            7.04            566         +              Normal
  07/24/2026 09 PM PDT            7.05            571         +              Normal
  07/24/2026 10 PM PDT            7.07            579         +              Normal
  07/24/2026 11 PM PDT            7.09            588         +              Normal
  07/25/2026 12 AM PDT            7.11            596         +              Normal
  07/25/2026 01 AM PDT            7.13            605         +              Normal
  07/25/2026 02 AM PDT            7.15            614         +              Normal
  07/25/2026 03 AM PDT            7.17            623         +              Normal
  07/25/2026 04 AM PDT            7.18            627         +              Normal
  07/25/2026 05 AM PDT            7.20            636         +              Normal
  07/25/2026 06 AM PDT            7.22            645         +              Normal
  07/25/2026 07 AM PDT            7.24            654         +              Normal
  07/25/2026 08 AM PDT            7.26            663         +              Normal
  07/25/2026 09 AM PDT            7.28            672         +              Normal
  07/25/2026 10 AM PDT            7.29            677         +              Normal
  07/25/2026 11 AM PDT            7.31            686         +              Normal
  07/25/2026 12 PM PDT            7.33            695         +              Normal
  07/25/2026 01 PM PDT            7.35            704         +              Normal
  07/25/2026 02 PM PDT            7.36            709         +              Normal
  07/25/2026 03 PM PDT            7.38            718         +              Normal
  07/25/2026 04 PM PDT            7.40            728         +              Normal
  07/25/2026 05 PM PDT            7.41            733         +              Normal
  07/25/2026 06 PM PDT            7.43            742         +              Normal
  07/25/2026 07 PM PDT            7.44            747         +              Normal
  07/25/2026 08 PM PDT            7.46            756         +              Normal
  07/25/2026 09 PM PDT            7.47            761         +              Normal
  07/25/2026 10 PM PDT            7.49            771         +              Normal
  07/25/2026 11 PM PDT            7.50            776         +              Normal
  07/26/2026 12 AM PDT            7.51            781         +              Normal
  07/26/2026 01 AM PDT            7.53            790         +              Normal
  07/26/2026 02 AM PDT            7.54            795         +              Normal
  07/26/2026 03 AM PDT            7.55            800         +              Normal
  07/26/2026 04 AM PDT            7.57            810         +              Normal
  07/26/2026 05 AM PDT            7.58            815         +              Normal
  07/26/2026 06 AM PDT            7.59            820         +              Normal
  07/26/2026 07 AM PDT            7.60            825         +              Normal
  07/26/2026 08 AM PDT            7.61            830         +              Normal
  07/26/2026 09 AM PDT            7.62            835         +              Normal
  07/26/2026 10 AM PDT            7.63            840         +              Normal
  07/26/2026 11 AM PDT            7.64            845         +              Normal
  07/26/2026 12 PM PDT            7.65            850         +              Normal
  07/26/2026 01 PM PDT            7.66            855         +              Normal
  07/26/2026 02 PM PDT            7.67            860         +              Normal
  07/26/2026 03 PM PDT            7.68            865         +              Normal
  07/26/2026 04 PM PDT            7.69            870         +              Normal
  07/26/2026 05 PM PDT            7.70            876         +              Normal
  07/26/2026 06 PM PDT            7.71            881         +              Normal
  07/26/2026 07 PM PDT            7.71            881         0              Normal
  07/26/2026 08 PM PDT            7.72            886         +              Normal
  07/26/2026 09 PM PDT            7.73            891         +              Normal
  07/26/2026 10 PM PDT            7.74            896         +              Normal
  07/26/2026 11 PM PDT            7.74            896         0              Normal
  07/27/2026 12 AM PDT            7.75            901         +              Normal
  07/27/2026 01 AM PDT            7.76            906         +              Normal
  07/27/2026 02 AM PDT            7.76            906         0              Normal
  07/27/2026 03 AM PDT            7.77            912         +              Normal
  07/27/2026 04 AM PDT            7.78            917         +              Normal
  07/27/2026 05 AM PDT            7.78            917         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.