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SAN JOAQUIN RIVER - VERNALIS (VNSC1)
| Latitude: 37.68º N | Longitude: 121.27º W | Elevation: 35 Feet | | Forecast Type: Official Location |
| Location: San Joaquin County in California | Bulletin Group: San Joaquin | River Group: San Joaquin |
| Issuance Time: | Mar 23 2026 at 7:33 AM PDT | Next Issuance: | Mar 23 2026 at 3:00 PM PDT
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| Action/Monitor: 24.5 Feet | Minor Flood: 29.0 Feet | Moderate Flood: 32.0 Feet | Major Flood: 37.3 Feet |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: San Joaquin River - Vernalis (VNSC1)
#
# File Generation Time: 03/23/2026 at 07:33 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 03/18/2026 at 08:00 AM PDT
# Maximum Observed Stage: 12.57 Feet
# Maximum Observed Flow: 4649 cfs
#
# Earliest Date & Time of Maximum Forecast: 03/23/2026 at 08:00 AM PDT
# Maximum Forecast Stage: 10.94 Feet
# Maximum Forecast Flow: 3157 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
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 11.20 3382 - Normal
03/22/2026 07 AM PDT 11.20 3382 0 Normal
03/22/2026 08 AM PDT 11.18 3365 - Normal
03/22/2026 09 AM PDT 11.16 3348 - Normal
03/22/2026 10 AM PDT 11.15 3339 - Normal
03/22/2026 11 AM PDT 11.15 3339 0 Normal
03/22/2026 12 PM PDT 11.12 3313 - Normal
03/22/2026 01 PM PDT 11.12 3313 0 Normal
03/22/2026 02 PM PDT 11.11 3305 - Normal
03/22/2026 03 PM PDT 11.12 3313 + Normal
03/22/2026 04 PM PDT 11.11 3305 - Normal
03/22/2026 05 PM PDT 11.09 3288 - Normal
03/22/2026 06 PM PDT 11.08 3279 - Normal
03/22/2026 07 PM PDT 11.09 3288 + Normal
03/22/2026 08 PM PDT 11.07 3270 - Normal
03/22/2026 09 PM PDT 11.05 3253 - Normal
03/22/2026 10 PM PDT 11.04 3245 - Normal
03/22/2026 11 PM PDT 11.03 3236 - Normal
03/23/2026 12 AM PDT 11.01 3219 - Normal
03/23/2026 01 AM PDT 11.00 3210 - Normal
03/23/2026 02 AM PDT 11.00 3210 0 Normal
03/23/2026 03 AM PDT 10.99 3201 - Normal
03/23/2026 04 AM PDT 10.97 3184 - Normal
03/23/2026 05 AM PDT 10.97 3184 0 Normal
03/23/2026 06 AM PDT 10.96 3175 - Normal
03/23/2026 07 AM PDT 10.95 3166 - Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
03/23/2026 08 AM PDT 10.94 3157 Normal
03/23/2026 09 AM PDT 10.93 3148 - Normal
03/23/2026 10 AM PDT 10.91 3131 - Normal
03/23/2026 11 AM PDT 10.90 3122 - Normal
03/23/2026 12 PM PDT 10.89 3113 - Normal
03/23/2026 01 PM PDT 10.87 3095 - Normal
03/23/2026 02 PM PDT 10.86 3087 - Normal
03/23/2026 03 PM PDT 10.85 3078 - Normal
03/23/2026 04 PM PDT 10.83 3060 - Normal
03/23/2026 05 PM PDT 10.82 3052 - Normal
03/23/2026 06 PM PDT 10.80 3034 - Normal
03/23/2026 07 PM PDT 10.79 3025 - Normal
03/23/2026 08 PM PDT 10.78 3017 - Normal
03/23/2026 09 PM PDT 10.76 2999 - Normal
03/23/2026 10 PM PDT 10.75 2991 - Normal
03/23/2026 11 PM PDT 10.74 2982 - Normal
03/24/2026 12 AM PDT 10.72 2965 - Normal
03/24/2026 01 AM PDT 10.71 2956 - Normal
03/24/2026 02 AM PDT 10.70 2948 - Normal
03/24/2026 03 AM PDT 10.69 2939 - Normal
03/24/2026 04 AM PDT 10.68 2930 - Normal
03/24/2026 05 AM PDT 10.67 2922 - Normal
03/24/2026 06 AM PDT 10.66 2913 - Normal
03/24/2026 07 AM PDT 10.65 2905 - Normal
03/24/2026 08 AM PDT 10.64 2896 - Normal
03/24/2026 09 AM PDT 10.63 2888 - Normal
03/24/2026 10 AM PDT 10.62 2879 - Normal
03/24/2026 11 AM PDT 10.61 2871 - Normal
03/24/2026 12 PM PDT 10.60 2862 - Normal
03/24/2026 01 PM PDT 10.59 2854 - Normal
03/24/2026 02 PM PDT 10.57 2837 - Normal
03/24/2026 03 PM PDT 10.56 2828 - Normal
03/24/2026 04 PM PDT 10.55 2820 - Normal
03/24/2026 05 PM PDT 10.54 2811 - Normal
03/24/2026 06 PM PDT 10.53 2803 - Normal
03/24/2026 07 PM PDT 10.52 2795 - Normal
03/24/2026 08 PM PDT 10.51 2786 - Normal
03/24/2026 09 PM PDT 10.50 2778 - Normal
03/24/2026 10 PM PDT 10.49 2769 - Normal
03/24/2026 11 PM PDT 10.48 2761 - Normal
03/25/2026 12 AM PDT 10.47 2753 - Normal
03/25/2026 01 AM PDT 10.46 2744 - Normal
03/25/2026 02 AM PDT 10.45 2736 - Normal
03/25/2026 03 AM PDT 10.44 2728 - Normal
03/25/2026 04 AM PDT 10.43 2719 - Normal
03/25/2026 05 AM PDT 10.42 2711 - Normal
03/25/2026 06 AM PDT 10.41 2703 - Normal
03/25/2026 07 AM PDT 10.40 2695 - Normal
03/25/2026 08 AM PDT 10.40 2695 0 Normal
03/25/2026 09 AM PDT 10.39 2686 - Normal
03/25/2026 10 AM PDT 10.38 2678 - Normal
03/25/2026 11 AM PDT 10.38 2678 0 Normal
03/25/2026 12 PM PDT 10.37 2670 - Normal
03/25/2026 01 PM PDT 10.36 2662 - Normal
03/25/2026 02 PM PDT 10.36 2662 0 Normal
03/25/2026 03 PM PDT 10.35 2653 - Normal
03/25/2026 04 PM PDT 10.35 2653 0 Normal
03/25/2026 05 PM PDT 10.34 2645 - Normal
03/25/2026 06 PM PDT 10.34 2645 0 Normal
03/25/2026 07 PM PDT 10.33 2637 - Normal
03/25/2026 08 PM PDT 10.33 2637 0 Normal
03/25/2026 09 PM PDT 10.33 2637 0 Normal
03/25/2026 10 PM PDT 10.32 2629 - Normal
03/25/2026 11 PM PDT 10.32 2629 0 Normal
03/26/2026 12 AM PDT 10.31 2621 - Normal
03/26/2026 01 AM PDT 10.31 2621 0 Normal
03/26/2026 02 AM PDT 10.31 2621 0 Normal
03/26/2026 03 AM PDT 10.31 2621 0 Normal
03/26/2026 04 AM PDT 10.30 2612 - Normal
03/26/2026 05 AM PDT 10.30 2612 0 Normal
03/26/2026 06 AM PDT 10.30 2612 0 Normal
03/26/2026 07 AM PDT 10.30 2612 0 Normal
03/26/2026 08 AM PDT 10.29 2604 - Normal
03/26/2026 09 AM PDT 10.29 2604 0 Normal
03/26/2026 10 AM PDT 10.29 2604 0 Normal
03/26/2026 11 AM PDT 10.29 2604 0 Normal
03/26/2026 12 PM PDT 10.29 2604 0 Normal
03/26/2026 01 PM PDT 10.29 2604 0 Normal
03/26/2026 02 PM PDT 10.29 2604 0 Normal
03/26/2026 03 PM PDT 10.28 2596 - Normal
03/26/2026 04 PM PDT 10.28 2596 0 Normal
03/26/2026 05 PM PDT 10.28 2596 0 Normal
03/26/2026 06 PM PDT 10.28 2596 0 Normal
03/26/2026 07 PM PDT 10.28 2596 0 Normal
03/26/2026 08 PM PDT 10.28 2596 0 Normal
03/26/2026 09 PM PDT 10.28 2596 0 Normal
03/26/2026 10 PM PDT 10.28 2596 0 Normal
03/26/2026 11 PM PDT 10.28 2596 0 Normal
03/27/2026 12 AM PDT 10.28 2596 0 Normal
03/27/2026 01 AM PDT 10.28 2596 0 Normal
03/27/2026 02 AM PDT 10.28 2596 0 Normal
03/27/2026 03 AM PDT 10.28 2596 0 Normal
03/27/2026 04 AM PDT 10.28 2596 0 Normal
03/27/2026 05 AM PDT 10.27 2588 - Normal
03/27/2026 06 AM PDT 10.27 2588 0 Normal
03/27/2026 07 AM PDT 10.27 2588 0 Normal
03/27/2026 08 AM PDT 10.27 2588 0 Normal
03/27/2026 09 AM PDT 10.27 2588 0 Normal
03/27/2026 10 AM PDT 10.27 2588 0 Normal
03/27/2026 11 AM PDT 10.27 2588 0 Normal
03/27/2026 12 PM PDT 10.27 2588 0 Normal
03/27/2026 01 PM PDT 10.27 2588 0 Normal
03/27/2026 02 PM PDT 10.27 2588 0 Normal
03/27/2026 03 PM PDT 10.27 2588 0 Normal
03/27/2026 04 PM PDT 10.27 2588 0 Normal
03/27/2026 05 PM PDT 10.27 2588 0 Normal
03/27/2026 06 PM PDT 10.27 2588 0 Normal
03/27/2026 07 PM PDT 10.27 2588 0 Normal
03/27/2026 08 PM PDT 10.27 2588 0 Normal
03/27/2026 09 PM PDT 10.27 2588 0 Normal
03/27/2026 10 PM PDT 10.27 2588 0 Normal
03/27/2026 11 PM PDT 10.27 2588 0 Normal
03/28/2026 12 AM PDT 10.27 2588 0 Normal
03/28/2026 01 AM PDT 10.27 2588 0 Normal
03/28/2026 02 AM PDT 10.27 2588 0 Normal
03/28/2026 03 AM PDT 10.27 2588 0 Normal
03/28/2026 04 AM PDT 10.27 2588 0 Normal
03/28/2026 05 AM PDT 10.27 2588 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.
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