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: Mar 22 2026 at 7:36 AM PDTNext Issuance: Mar 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:  03/22/2026 at 07:36 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  03/17/2026 at 07:00 AM PDT
# Maximum Observed Stage:                       12.70 Feet
# Maximum Observed Flow:                        4778 cfs
#
# Earliest Date & Time of Maximum Forecast:     03/22/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       11.16 Feet
# Maximum Forecast Flow:                        3348 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  03/17/2026 07 AM PDT           12.70           4778                        Normal
  03/17/2026 08 AM PDT           12.69           4768         -              Normal
  03/17/2026 09 AM PDT           12.68           4758         -              Normal
  03/17/2026 10 AM PDT           12.68           4758         0              Normal
  03/17/2026 11 AM PDT           12.67           4748         -              Normal
  03/17/2026 12 PM PDT           12.68           4758         +              Normal
  03/17/2026 01 PM PDT           12.67           4748         -              Normal
  03/17/2026 02 PM PDT           12.67           4748         0              Normal
  03/17/2026 03 PM PDT           12.67           4748         0              Normal
  03/17/2026 04 PM PDT           12.66           4738         -              Normal
  03/17/2026 05 PM PDT           12.66           4738         0              Normal
  03/17/2026 06 PM PDT           12.65           4728         -              Normal
  03/17/2026 07 PM PDT           12.63           4708         -              Normal
  03/17/2026 08 PM PDT           12.62           4698         -              Normal
  03/17/2026 09 PM PDT           12.61           4688         -              Normal
  03/17/2026 10 PM PDT           12.59           4668         -              Normal
  03/17/2026 11 PM PDT           12.59           4668         0              Normal
  03/18/2026 12 AM PDT           12.58           4658         -              Normal
  03/18/2026 01 AM PDT           12.57           4649         -              Normal
  03/18/2026 02 AM PDT           12.56           4639         -              Normal
  03/18/2026 03 AM PDT           12.57           4649         +              Normal
  03/18/2026 04 AM PDT           12.57           4649         0              Normal
  03/18/2026 05 AM PDT           12.56           4639         -              Normal
  03/18/2026 06 AM PDT           12.56           4639         0              Normal
  03/18/2026 07 AM PDT           12.57           4649         +              Normal
  03/18/2026 08 AM PDT           12.57           4649         0              Normal
  03/18/2026 09 AM PDT           12.55           4629         -              Normal
  03/18/2026 10 AM PDT           12.56           4639         +              Normal
  03/18/2026 11 AM PDT           12.55           4629         -              Normal
  03/18/2026 12 PM PDT           12.55           4629         0              Normal
  03/18/2026 01 PM PDT           12.54           4619         -              Normal
  03/18/2026 02 PM PDT           12.53           4609         -              Normal
  03/18/2026 03 PM PDT           12.52           4599         -              Normal
  03/18/2026 04 PM PDT           12.51           4590         -              Normal
  03/18/2026 05 PM PDT           12.49           4570         -              Normal
  03/18/2026 06 PM PDT           12.48           4560         -              Normal
  03/18/2026 07 PM PDT           12.46           4541         -              Normal
  03/18/2026 08 PM PDT           12.45           4531         -              Normal
  03/18/2026 09 PM PDT           12.43           4511         -              Normal
  03/18/2026 10 PM PDT           12.41           4492         -              Normal
  03/18/2026 11 PM PDT           12.39           4473         -              Normal
  03/19/2026 12 AM PDT           12.37           4453         -              Normal
  03/19/2026 01 AM PDT           12.35           4434         -              Normal
  03/19/2026 02 AM PDT           12.33           4415         -              Normal
  03/19/2026 03 AM PDT           12.31           4395         -              Normal
  03/19/2026 04 AM PDT           12.30           4386         -              Normal
  03/19/2026 05 AM PDT           12.27           4357         -              Normal
  03/19/2026 06 AM PDT           12.26           4347         -              Normal
  03/19/2026 07 AM PDT           12.24           4328         -              Normal
  03/19/2026 08 AM PDT           12.21           4299         -              Normal
  03/19/2026 09 AM PDT           12.19           4280         -              Normal
  03/19/2026 10 AM PDT           12.16           4252         -              Normal
  03/19/2026 11 AM PDT           12.14           4233         -              Normal
  03/19/2026 12 PM PDT           12.12           4214         -              Normal
  03/19/2026 01 PM PDT           12.10           4195         -              Normal
  03/19/2026 02 PM PDT           12.10           4195         0              Normal
  03/19/2026 03 PM PDT           12.06           4157         -              Normal
  03/19/2026 04 PM PDT           12.05           4148         -              Normal
  03/19/2026 05 PM PDT           12.03           4129         -              Normal
  03/19/2026 06 PM PDT           12.01           4110         -              Normal
  03/19/2026 07 PM PDT           11.99           4092         -              Normal
  03/19/2026 08 PM PDT           11.97           4073         -              Normal
  03/19/2026 09 PM PDT           11.95           4054         -              Normal
  03/19/2026 10 PM PDT           11.92           4027         -              Normal
  03/19/2026 11 PM PDT           11.91           4017         -              Normal
  03/20/2026 12 AM PDT           11.90           4008         -              Normal
  03/20/2026 01 AM PDT           11.88           3989         -              Normal
  03/20/2026 02 AM PDT           11.87           3980         -              Normal
  03/20/2026 03 AM PDT           11.86           3971         -              Normal
  03/20/2026 04 AM PDT           11.85           3962         -              Normal
  03/20/2026 05 AM PDT           11.84           3953         -              Normal
  03/20/2026 06 AM PDT           11.83           3943         -              Normal
  03/20/2026 07 AM PDT           11.81           3925         -              Normal
  03/20/2026 08 AM PDT           11.80           3916         -              Normal
  03/20/2026 09 AM PDT           11.79           3907         -              Normal
  03/20/2026 10 AM PDT           11.78           3897         -              Normal
  03/20/2026 11 AM PDT           11.76           3879         -              Normal
  03/20/2026 12 PM PDT           11.75           3870         -              Normal
  03/20/2026 01 PM PDT           11.74           3861         -              Normal
  03/20/2026 02 PM PDT           11.73           3852         -              Normal
  03/20/2026 03 PM PDT           11.71           3834         -              Normal
  03/20/2026 04 PM PDT           11.68           3806         -              Normal
  03/20/2026 05 PM PDT           11.67           3797         -              Normal
  03/20/2026 06 PM PDT           11.65           3779         -              Normal
  03/20/2026 07 PM PDT           11.63           3761         -              Normal
  03/20/2026 08 PM PDT           11.61           3743         -              Normal
  03/20/2026 09 PM PDT           11.59           3725         -              Normal
  03/20/2026 10 PM PDT           11.57           3707         -              Normal
  03/20/2026 11 PM PDT           11.56           3698         -              Normal
  03/21/2026 12 AM PDT           11.54           3680         -              Normal
  03/21/2026 01 AM PDT           11.52           3663         -              Normal
  03/21/2026 02 AM PDT           11.51           3654         -              Normal
  03/21/2026 03 AM PDT           11.50           3645         -              Normal
  03/21/2026 04 AM PDT           11.49           3636         -              Normal
  03/21/2026 05 AM PDT           11.49           3636         0              Normal
  03/21/2026 06 AM PDT           11.48           3627         -              Normal
  03/21/2026 07 AM PDT           11.47           3618         -              Normal
  03/21/2026 08 AM PDT           11.47           3618         0              Normal
  03/21/2026 09 AM PDT           11.45           3600         -              Normal
  03/21/2026 10 AM PDT           11.45           3600         0              Normal
  03/21/2026 11 AM PDT           11.44           3592         -              Normal
  03/21/2026 12 PM PDT           11.43           3583         -              Normal
  03/21/2026 01 PM PDT           11.42           3574         -              Normal
  03/21/2026 02 PM PDT           11.42           3574         0              Normal
  03/21/2026 03 PM PDT           11.39           3547         -              Normal
  03/21/2026 04 PM PDT           11.37           3530         -              Normal
  03/21/2026 05 PM PDT           11.35           3512         -              Normal
  03/21/2026 06 PM PDT           11.34           3504         -              Normal
  03/21/2026 07 PM PDT           11.34           3504         0              Normal
  03/21/2026 08 PM PDT           11.32           3486         -              Normal
  03/21/2026 09 PM PDT           11.29           3460         -              Normal
  03/21/2026 10 PM PDT           11.28           3451         -              Normal
  03/21/2026 11 PM PDT           11.28           3451         0              Normal
  03/22/2026 12 AM PDT           11.26           3434         -              Normal
  03/22/2026 01 AM PDT           11.23           3408         -              Normal
  03/22/2026 02 AM PDT           11.24           3417         +              Normal
  03/22/2026 03 AM PDT           11.23           3408         -              Normal
  03/22/2026 04 AM PDT           11.22           3399         -              Normal
  03/22/2026 05 AM PDT           11.21           3391         -              Normal
  03/22/2026 06 AM PDT           11.19           3373         -              Normal
  03/22/2026 07 AM PDT           11.18           3365         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  03/22/2026 08 AM PDT           11.16           3348                        Normal
  03/22/2026 09 AM PDT           11.15           3339         -              Normal
  03/22/2026 10 AM PDT           11.13           3322         -              Normal
  03/22/2026 11 AM PDT           11.12           3313         -              Normal
  03/22/2026 12 PM PDT           11.10           3296         -              Normal
  03/22/2026 01 PM PDT           11.09           3288         -              Normal
  03/22/2026 02 PM PDT           11.07           3270         -              Normal
  03/22/2026 03 PM PDT           11.05           3253         -              Normal
  03/22/2026 04 PM PDT           11.04           3245         -              Normal
  03/22/2026 05 PM PDT           11.02           3227         -              Normal
  03/22/2026 06 PM PDT           11.01           3219         -              Normal
  03/22/2026 07 PM PDT           10.99           3201         -              Normal
  03/22/2026 08 PM PDT           10.97           3184         -              Normal
  03/22/2026 09 PM PDT           10.96           3175         -              Normal
  03/22/2026 10 PM PDT           10.95           3166         -              Normal
  03/22/2026 11 PM PDT           10.93           3148         -              Normal
  03/23/2026 12 AM PDT           10.92           3139         -              Normal
  03/23/2026 01 AM PDT           10.90           3122         -              Normal
  03/23/2026 02 AM PDT           10.89           3113         -              Normal
  03/23/2026 03 AM PDT           10.88           3104         -              Normal
  03/23/2026 04 AM PDT           10.87           3095         -              Normal
  03/23/2026 05 AM PDT           10.86           3087         -              Normal
  03/23/2026 06 AM PDT           10.85           3078         -              Normal
  03/23/2026 07 AM PDT           10.83           3060         -              Normal
  03/23/2026 08 AM PDT           10.82           3052         -              Normal
  03/23/2026 09 AM PDT           10.81           3043         -              Normal
  03/23/2026 10 AM PDT           10.80           3034         -              Normal
  03/23/2026 11 AM PDT           10.78           3017         -              Normal
  03/23/2026 12 PM PDT           10.77           3008         -              Normal
  03/23/2026 01 PM PDT           10.76           2999         -              Normal
  03/23/2026 02 PM PDT           10.74           2982         -              Normal
  03/23/2026 03 PM PDT           10.73           2973         -              Normal
  03/23/2026 04 PM PDT           10.71           2956         -              Normal
  03/23/2026 05 PM PDT           10.70           2948         -              Normal
  03/23/2026 06 PM PDT           10.69           2939         -              Normal
  03/23/2026 07 PM PDT           10.67           2922         -              Normal
  03/23/2026 08 PM PDT           10.66           2913         -              Normal
  03/23/2026 09 PM PDT           10.64           2896         -              Normal
  03/23/2026 10 PM PDT           10.63           2888         -              Normal
  03/23/2026 11 PM PDT           10.62           2879         -              Normal
  03/24/2026 12 AM PDT           10.60           2862         -              Normal
  03/24/2026 01 AM PDT           10.59           2854         -              Normal
  03/24/2026 02 AM PDT           10.58           2845         -              Normal
  03/24/2026 03 AM PDT           10.57           2837         -              Normal
  03/24/2026 04 AM PDT           10.55           2820         -              Normal
  03/24/2026 05 AM PDT           10.54           2811         -              Normal
  03/24/2026 06 AM PDT           10.53           2803         -              Normal
  03/24/2026 07 AM PDT           10.52           2795         -              Normal
  03/24/2026 08 AM PDT           10.51           2786         -              Normal
  03/24/2026 09 AM PDT           10.50           2778         -              Normal
  03/24/2026 10 AM PDT           10.49           2769         -              Normal
  03/24/2026 11 AM PDT           10.48           2761         -              Normal
  03/24/2026 12 PM PDT           10.47           2753         -              Normal
  03/24/2026 01 PM PDT           10.46           2744         -              Normal
  03/24/2026 02 PM PDT           10.45           2736         -              Normal
  03/24/2026 03 PM PDT           10.44           2728         -              Normal
  03/24/2026 04 PM PDT           10.42           2711         -              Normal
  03/24/2026 05 PM PDT           10.41           2703         -              Normal
  03/24/2026 06 PM PDT           10.40           2695         -              Normal
  03/24/2026 07 PM PDT           10.39           2686         -              Normal
  03/24/2026 08 PM PDT           10.38           2678         -              Normal
  03/24/2026 09 PM PDT           10.36           2662         -              Normal
  03/24/2026 10 PM PDT           10.35           2653         -              Normal
  03/24/2026 11 PM PDT           10.34           2645         -              Normal
  03/25/2026 12 AM PDT           10.33           2637         -              Normal
  03/25/2026 01 AM PDT           10.32           2629         -              Normal
  03/25/2026 02 AM PDT           10.31           2621         -              Normal
  03/25/2026 03 AM PDT           10.30           2612         -              Normal
  03/25/2026 04 AM PDT           10.29           2604         -              Normal
  03/25/2026 05 AM PDT           10.28           2596         -              Normal
  03/25/2026 06 AM PDT           10.27           2588         -              Normal
  03/25/2026 07 AM PDT           10.26           2580         -              Normal
  03/25/2026 08 AM PDT           10.26           2580         0              Normal
  03/25/2026 09 AM PDT           10.25           2572         -              Normal
  03/25/2026 10 AM PDT           10.24           2564         -              Normal
  03/25/2026 11 AM PDT           10.23           2556         -              Normal
  03/25/2026 12 PM PDT           10.23           2556         0              Normal
  03/25/2026 01 PM PDT           10.22           2547         -              Normal
  03/25/2026 02 PM PDT           10.21           2539         -              Normal
  03/25/2026 03 PM PDT           10.21           2539         0              Normal
  03/25/2026 04 PM PDT           10.20           2531         -              Normal
  03/25/2026 05 PM PDT           10.20           2531         0              Normal
  03/25/2026 06 PM PDT           10.19           2523         -              Normal
  03/25/2026 07 PM PDT           10.19           2523         0              Normal
  03/25/2026 08 PM PDT           10.18           2515         -              Normal
  03/25/2026 09 PM PDT           10.17           2507         -              Normal
  03/25/2026 10 PM PDT           10.17           2507         0              Normal
  03/25/2026 11 PM PDT           10.16           2499         -              Normal
  03/26/2026 12 AM PDT           10.16           2499         0              Normal
  03/26/2026 01 AM PDT           10.16           2499         0              Normal
  03/26/2026 02 AM PDT           10.15           2491         -              Normal
  03/26/2026 03 AM PDT           10.15           2491         0              Normal
  03/26/2026 04 AM PDT           10.14           2483         -              Normal
  03/26/2026 05 AM PDT           10.14           2483         0              Normal
  03/26/2026 06 AM PDT           10.14           2483         0              Normal
  03/26/2026 07 AM PDT           10.14           2483         0              Normal
  03/26/2026 08 AM PDT           10.13           2475         -              Normal
  03/26/2026 09 AM PDT           10.13           2475         0              Normal
  03/26/2026 10 AM PDT           10.13           2475         0              Normal
  03/26/2026 11 AM PDT           10.12           2467         -              Normal
  03/26/2026 12 PM PDT           10.12           2467         0              Normal
  03/26/2026 01 PM PDT           10.12           2467         0              Normal
  03/26/2026 02 PM PDT           10.12           2467         0              Normal
  03/26/2026 03 PM PDT           10.12           2467         0              Normal
  03/26/2026 04 PM PDT           10.11           2459         -              Normal
  03/26/2026 05 PM PDT           10.11           2459         0              Normal
  03/26/2026 06 PM PDT           10.11           2459         0              Normal
  03/26/2026 07 PM PDT           10.11           2459         0              Normal
  03/26/2026 08 PM PDT           10.11           2459         0              Normal
  03/26/2026 09 PM PDT           10.10           2451         -              Normal
  03/26/2026 10 PM PDT           10.10           2451         0              Normal
  03/26/2026 11 PM PDT           10.10           2451         0              Normal
  03/27/2026 12 AM PDT           10.10           2451         0              Normal
  03/27/2026 01 AM PDT           10.10           2451         0              Normal
  03/27/2026 02 AM PDT           10.09           2443         -              Normal
  03/27/2026 03 AM PDT           10.09           2443         0              Normal
  03/27/2026 04 AM PDT           10.09           2443         0              Normal
  03/27/2026 05 AM PDT           10.09           2443         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.