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 27 2026 at 7:48 AM PDTNext Issuance: Sep 28 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:  09/27/2026 at 07:49 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  09/27/2026 at 07:00 AM PDT
# Maximum Observed Stage:                       7.32 Feet
# Maximum Observed Flow:                        690 cfs
#
# Earliest Date & Time of Maximum Forecast:     10/01/2026 at 11:00 PM PDT
# Maximum Forecast Stage:                       8.07 Feet
# Maximum Forecast Flow:                        1074 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  09/22/2026 07 AM PDT            7.31            686                        Normal
  09/22/2026 08 AM PDT            7.32            690         +              Normal
  09/22/2026 09 AM PDT            7.32            690         0              Normal
  09/22/2026 10 AM PDT            7.31            686         -              Normal
  09/22/2026 11 AM PDT            7.28            672         -              Normal
  09/22/2026 12 PM PDT            7.28            672         0              Normal
  09/22/2026 01 PM PDT            7.28            672         0              Normal
  09/22/2026 02 PM PDT            7.27            667         -              Normal
  09/22/2026 03 PM PDT            7.24            654         -              Normal
  09/22/2026 04 PM PDT            7.25            658         +              Normal
  09/22/2026 05 PM PDT            7.22            645         -              Normal
  09/22/2026 06 PM PDT            7.21            640         -              Normal
  09/22/2026 07 PM PDT            7.20            636         -              Normal
  09/22/2026 08 PM PDT            7.21            640         +              Normal
  09/22/2026 09 PM PDT            7.20            636         -              Normal
  09/22/2026 10 PM PDT            7.20            636         0              Normal
  09/22/2026 11 PM PDT            7.19            631         -              Normal
  09/23/2026 12 AM PDT            7.20            636         +              Normal
  09/23/2026 01 AM PDT            7.20            636         0              Normal
  09/23/2026 02 AM PDT            7.21            640         +              Normal
  09/23/2026 03 AM PDT            7.21            640         0              Normal
  09/23/2026 04 AM PDT            7.22            645         +              Normal
  09/23/2026 05 AM PDT            7.22            645         0              Normal
  09/23/2026 06 AM PDT            7.22            645         0              Normal
  09/23/2026 07 AM PDT            7.23            649         +              Normal
  09/23/2026 08 AM PDT            7.22            645         -              Normal
  09/23/2026 09 AM PDT            7.22            645         0              Normal
  09/23/2026 10 AM PDT            7.20            636         -              Normal
  09/23/2026 11 AM PDT            7.21            640         +              Normal
  09/23/2026 12 PM PDT            7.21            640         0              Normal
  09/23/2026 01 PM PDT            7.19            631         -              Normal
  09/23/2026 02 PM PDT            7.21            640         +              Normal
  09/23/2026 03 PM PDT            7.21            640         0              Normal
  09/23/2026 04 PM PDT            7.19            631         -              Normal
  09/23/2026 05 PM PDT            7.17            623         -              Normal
  09/23/2026 06 PM PDT            7.15            614         -              Normal
  09/23/2026 07 PM PDT            7.14            609         -              Normal
  09/23/2026 08 PM PDT            7.12            601         -              Normal
  09/23/2026 09 PM PDT            7.12            601         0              Normal
  09/23/2026 10 PM PDT            7.11            596         -              Normal
  09/23/2026 11 PM PDT            7.10            592         -              Normal
  09/24/2026 12 AM PDT            7.10            592         0              Normal
  09/24/2026 01 AM PDT            7.10            592         0              Normal
  09/24/2026 02 AM PDT            7.09            588         -              Normal
  09/24/2026 03 AM PDT            7.09            588         0              Normal
  09/24/2026 04 AM PDT            7.09            588         0              Normal
  09/24/2026 05 AM PDT            7.10            592         +              Normal
  09/24/2026 06 AM PDT            7.09            588         -              Normal
  09/24/2026 07 AM PDT            7.09            588         0              Normal
  09/24/2026 08 AM PDT            7.09            588         0              Normal
  09/24/2026 09 AM PDT            7.09            588         0              Normal
  09/24/2026 10 AM PDT            7.09            588         0              Normal
  09/24/2026 11 AM PDT            7.10            592         +              Normal
  09/24/2026 12 PM PDT            7.09            588         -              Normal
  09/24/2026 01 PM PDT            7.05            571         -              Normal
  09/24/2026 02 PM PDT            7.09            588         +              Normal
  09/24/2026 03 PM PDT            7.08            583         -              Normal
  09/24/2026 04 PM PDT            7.04            566         -              Normal
  09/24/2026 05 PM PDT            7.04            566         0              Normal
  09/24/2026 06 PM PDT            7.03            562         -              Normal
  09/24/2026 07 PM PDT            6.99            545         -              Normal
  09/24/2026 08 PM PDT            7.01            554         +              Normal
  09/24/2026 09 PM PDT            7.01            554         0              Normal
  09/24/2026 10 PM PDT            7.01            554         0              Normal
  09/24/2026 11 PM PDT            6.99            545         -              Normal
  09/25/2026 12 AM PDT            7.03            562         +              Normal
  09/25/2026 01 AM PDT            7.04            566         +              Normal
  09/25/2026 02 AM PDT            7.01            554         -              Normal
  09/25/2026 03 AM PDT            7.02            558         +              Normal
  09/25/2026 04 AM PDT            7.05            571         +              Normal
  09/25/2026 05 AM PDT            7.03            562         -              Normal
  09/25/2026 06 AM PDT            7.06            575         +              Normal
  09/25/2026 07 AM PDT            7.06            575         0              Normal
  09/25/2026 08 AM PDT            7.05            571         -              Normal
  09/25/2026 09 AM PDT            7.05            571         0              Normal
  09/25/2026 10 AM PDT            7.05            571         0              Normal
  09/25/2026 11 AM PDT            7.06            575         +              Normal
  09/25/2026 12 PM PDT            7.09            588         +              Normal
  09/25/2026 01 PM PDT            7.08            583         -              Normal
  09/25/2026 02 PM PDT            7.09            588         +              Normal
  09/25/2026 03 PM PDT            7.09            588         0              Normal
  09/25/2026 04 PM PDT            7.09            588         0              Normal
  09/25/2026 05 PM PDT            7.07            579         -              Normal
  09/25/2026 06 PM PDT            7.06            575         -              Normal
  09/25/2026 07 PM PDT            7.10            592         +              Normal
  09/25/2026 08 PM PDT            7.11            596         +              Normal
  09/25/2026 09 PM PDT            7.07            579         -              Normal
  09/25/2026 10 PM PDT            7.10            592         +              Normal
  09/25/2026 11 PM PDT            7.10            592         0              Normal
  09/26/2026 12 AM PDT            7.13            605         +              Normal
  09/26/2026 01 AM PDT            7.13            605         0              Normal
  09/26/2026 02 AM PDT            7.12            601         -              Normal
  09/26/2026 03 AM PDT            7.12            601         0              Normal
  09/26/2026 04 AM PDT            7.12            601         0              Normal
  09/26/2026 05 AM PDT            7.12            601         0              Normal
  09/26/2026 06 AM PDT            7.12            601         0              Normal
  09/26/2026 07 AM PDT            7.12            601         0              Normal
  09/26/2026 08 AM PDT            7.13            605         +              Normal
  09/26/2026 09 AM PDT            7.14            609         +              Normal
  09/26/2026 10 AM PDT            7.14            609         0              Normal
  09/26/2026 11 AM PDT            7.15            614         +              Normal
  09/26/2026 12 PM PDT            7.16            618         +              Normal
  09/26/2026 01 PM PDT            7.18            627         +              Normal
  09/26/2026 02 PM PDT            7.21            640         +              Normal
  09/26/2026 03 PM PDT            7.21            640         0              Normal
  09/26/2026 04 PM PDT            7.25            658         +              Normal
  09/26/2026 05 PM PDT            7.25            658         0              Normal
  09/26/2026 06 PM PDT            7.26            663         +              Normal
  09/26/2026 07 PM PDT            7.26            663         0              Normal
  09/26/2026 08 PM PDT            7.26            663         0              Normal
  09/26/2026 09 PM PDT            7.27            667         +              Normal
  09/26/2026 10 PM PDT            7.27            667         0              Normal
  09/26/2026 11 PM PDT            7.27            667         0              Normal
  09/27/2026 12 AM PDT            7.29            677         +              Normal
  09/27/2026 01 AM PDT            7.29            677         0              Normal
  09/27/2026 02 AM PDT            7.30            681         +              Normal
  09/27/2026 03 AM PDT            7.31            686         +              Normal
  09/27/2026 04 AM PDT            7.31            686         0              Normal
  09/27/2026 05 AM PDT            7.32            690         +              Normal
  09/27/2026 06 AM PDT            7.32            690         0              Normal
  09/27/2026 07 AM PDT            7.32            690         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  09/27/2026 08 AM PDT            7.32            690                        Normal
  09/27/2026 09 AM PDT            7.32            690         0              Normal
  09/27/2026 10 AM PDT            7.32            690         0              Normal
  09/27/2026 11 AM PDT            7.32            690         0              Normal
  09/27/2026 12 PM PDT            7.32            690         0              Normal
  09/27/2026 01 PM PDT            7.32            690         0              Normal
  09/27/2026 02 PM PDT            7.32            690         0              Normal
  09/27/2026 03 PM PDT            7.32            690         0              Normal
  09/27/2026 04 PM PDT            7.32            690         0              Normal
  09/27/2026 05 PM PDT            7.32            690         0              Normal
  09/27/2026 06 PM PDT            7.32            690         0              Normal
  09/27/2026 07 PM PDT            7.32            690         0              Normal
  09/27/2026 08 PM PDT            7.32            690         0              Normal
  09/27/2026 09 PM PDT            7.32            690         0              Normal
  09/27/2026 10 PM PDT            7.32            690         0              Normal
  09/27/2026 11 PM PDT            7.32            690         0              Normal
  09/28/2026 12 AM PDT            7.32            690         0              Normal
  09/28/2026 01 AM PDT            7.32            690         0              Normal
  09/28/2026 02 AM PDT            7.32            690         0              Normal
  09/28/2026 03 AM PDT            7.32            690         0              Normal
  09/28/2026 04 AM PDT            7.32            690         0              Normal
  09/28/2026 05 AM PDT            7.32            690         0              Normal
  09/28/2026 06 AM PDT            7.32            690         0              Normal
  09/28/2026 07 AM PDT            7.32            690         0              Normal
  09/28/2026 08 AM PDT            7.32            690         0              Normal
  09/28/2026 09 AM PDT            7.32            690         0              Normal
  09/28/2026 10 AM PDT            7.32            690         0              Normal
  09/28/2026 11 AM PDT            7.32            690         0              Normal
  09/28/2026 12 PM PDT            7.32            690         0              Normal
  09/28/2026 01 PM PDT            7.32            690         0              Normal
  09/28/2026 02 PM PDT            7.32            690         0              Normal
  09/28/2026 03 PM PDT            7.32            690         0              Normal
  09/28/2026 04 PM PDT            7.32            690         0              Normal
  09/28/2026 05 PM PDT            7.32            690         0              Normal
  09/28/2026 06 PM PDT            7.32            690         0              Normal
  09/28/2026 07 PM PDT            7.32            690         0              Normal
  09/28/2026 08 PM PDT            7.32            690         0              Normal
  09/28/2026 09 PM PDT            7.32            690         0              Normal
  09/28/2026 10 PM PDT            7.32            690         0              Normal
  09/28/2026 11 PM PDT            7.33            695         +              Normal
  09/29/2026 12 AM PDT            7.33            695         0              Normal
  09/29/2026 01 AM PDT            7.34            700         +              Normal
  09/29/2026 02 AM PDT            7.34            700         0              Normal
  09/29/2026 03 AM PDT            7.35            704         +              Normal
  09/29/2026 04 AM PDT            7.37            714         +              Normal
  09/29/2026 05 AM PDT            7.38            718         +              Normal
  09/29/2026 06 AM PDT            7.39            723         +              Normal
  09/29/2026 07 AM PDT            7.41            733         +              Normal
  09/29/2026 08 AM PDT            7.43            742         +              Normal
  09/29/2026 09 AM PDT            7.45            752         +              Normal
  09/29/2026 10 AM PDT            7.47            761         +              Normal
  09/29/2026 11 AM PDT            7.49            771         +              Normal
  09/29/2026 12 PM PDT            7.51            781         +              Normal
  09/29/2026 01 PM PDT            7.54            795         +              Normal
  09/29/2026 02 PM PDT            7.56            805         +              Normal
  09/29/2026 03 PM PDT            7.58            815         +              Normal
  09/29/2026 04 PM PDT            7.60            825         +              Normal
  09/29/2026 05 PM PDT            7.62            835         +              Normal
  09/29/2026 06 PM PDT            7.64            845         +              Normal
  09/29/2026 07 PM PDT            7.66            855         +              Normal
  09/29/2026 08 PM PDT            7.68            865         +              Normal
  09/29/2026 09 PM PDT            7.70            876         +              Normal
  09/29/2026 10 PM PDT            7.72            886         +              Normal
  09/29/2026 11 PM PDT            7.74            896         +              Normal
  09/30/2026 12 AM PDT            7.75            901         +              Normal
  09/30/2026 01 AM PDT            7.77            912         +              Normal
  09/30/2026 02 AM PDT            7.79            922         +              Normal
  09/30/2026 03 AM PDT            7.80            927         +              Normal
  09/30/2026 04 AM PDT            7.82            938         +              Normal
  09/30/2026 05 AM PDT            7.83            943         +              Normal
  09/30/2026 06 AM PDT            7.84            948         +              Normal
  09/30/2026 07 AM PDT            7.86            959         +              Normal
  09/30/2026 08 AM PDT            7.87            964         +              Normal
  09/30/2026 09 AM PDT            7.88            970         +              Normal
  09/30/2026 10 AM PDT            7.89            975         +              Normal
  09/30/2026 11 AM PDT            7.90            980         +              Normal
  09/30/2026 12 PM PDT            7.91            986         +              Normal
  09/30/2026 01 PM PDT            7.92            991         +              Normal
  09/30/2026 02 PM PDT            7.93            997         +              Normal
  09/30/2026 03 PM PDT            7.94           1002         +              Normal
  09/30/2026 04 PM PDT            7.95           1007         +              Normal
  09/30/2026 05 PM PDT            7.96           1013         +              Normal
  09/30/2026 06 PM PDT            7.96           1013         0              Normal
  09/30/2026 07 PM PDT            7.97           1018         +              Normal
  09/30/2026 08 PM PDT            7.98           1024         +              Normal
  09/30/2026 09 PM PDT            7.98           1024         0              Normal
  09/30/2026 10 PM PDT            7.99           1029         +              Normal
  09/30/2026 11 PM PDT            8.00           1035         +              Normal
  10/01/2026 12 AM PDT            8.00           1035         0              Normal
  10/01/2026 01 AM PDT            8.01           1040         +              Normal
  10/01/2026 02 AM PDT            8.01           1040         0              Normal
  10/01/2026 03 AM PDT            8.01           1040         0              Normal
  10/01/2026 04 AM PDT            8.02           1046         +              Normal
  10/01/2026 05 AM PDT            8.02           1046         0              Normal
  10/01/2026 06 AM PDT            8.03           1051         +              Normal
  10/01/2026 07 AM PDT            8.03           1051         0              Normal
  10/01/2026 08 AM PDT            8.03           1051         0              Normal
  10/01/2026 09 AM PDT            8.04           1057         +              Normal
  10/01/2026 10 AM PDT            8.04           1057         0              Normal
  10/01/2026 11 AM PDT            8.04           1057         0              Normal
  10/01/2026 12 PM PDT            8.04           1057         0              Normal
  10/01/2026 01 PM PDT            8.05           1062         +              Normal
  10/01/2026 02 PM PDT            8.05           1062         0              Normal
  10/01/2026 03 PM PDT            8.05           1062         0              Normal
  10/01/2026 04 PM PDT            8.05           1062         0              Normal
  10/01/2026 05 PM PDT            8.06           1068         +              Normal
  10/01/2026 06 PM PDT            8.06           1068         0              Normal
  10/01/2026 07 PM PDT            8.06           1068         0              Normal
  10/01/2026 08 PM PDT            8.06           1068         0              Normal
  10/01/2026 09 PM PDT            8.06           1068         0              Normal
  10/01/2026 10 PM PDT            8.06           1068         0              Normal
  10/01/2026 11 PM PDT            8.07           1074         +              Normal
  10/02/2026 12 AM PDT            8.07           1074         0              Normal
  10/02/2026 01 AM PDT            8.07           1074         0              Normal
  10/02/2026 02 AM PDT            8.07           1074         0              Normal
  10/02/2026 03 AM PDT            8.07           1074         0              Normal
  10/02/2026 04 AM PDT            8.07           1074         0              Normal
  10/02/2026 05 AM PDT            8.07           1074         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.