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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 15 2026 at 8:33 AM PDT | Next Issuance: | Mar 16 2026 at 9:00 AM 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: 03/15/2026 at 08:33 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 03/10/2026 at 09:00 AM PDT
# Maximum Observed Stage: 12.97 Feet
# Maximum Observed Flow: 5050 cfs
#
# Earliest Date & Time of Maximum Forecast: 03/20/2026 at 02:00 AM PDT
# Maximum Forecast Stage: 12.86 Feet
# Maximum Forecast Flow: 4938 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
03/10/2026 08 AM PDT 12.95 5030 Normal
03/10/2026 09 AM PDT 12.97 5050 + Normal
03/10/2026 10 AM PDT 12.96 5040 - Normal
03/10/2026 11 AM PDT 12.93 5009 - Normal
03/10/2026 12 PM PDT 12.93 5009 0 Normal
03/10/2026 01 PM PDT 12.91 4989 - Normal
03/10/2026 02 PM PDT 12.91 4989 0 Normal
03/10/2026 03 PM PDT 12.89 4969 - Normal
03/10/2026 04 PM PDT 12.89 4969 0 Normal
03/10/2026 05 PM PDT 12.88 4958 - Normal
03/10/2026 06 PM PDT 12.89 4969 + Normal
03/10/2026 07 PM PDT 12.91 4989 + Normal
03/10/2026 08 PM PDT 12.91 4989 0 Normal
03/10/2026 09 PM PDT 12.91 4989 0 Normal
03/10/2026 10 PM PDT 12.90 4979 - Normal
03/10/2026 11 PM PDT 12.90 4979 0 Normal
03/11/2026 12 AM PDT 12.89 4969 - Normal
03/11/2026 01 AM PDT 12.88 4958 - Normal
03/11/2026 02 AM PDT 12.87 4948 - Normal
03/11/2026 03 AM PDT 12.87 4948 0 Normal
03/11/2026 04 AM PDT 12.87 4948 0 Normal
03/11/2026 05 AM PDT 12.87 4948 0 Normal
03/11/2026 06 AM PDT 12.87 4948 0 Normal
03/11/2026 07 AM PDT 12.87 4948 0 Normal
03/11/2026 08 AM PDT 12.87 4948 0 Normal
03/11/2026 09 AM PDT 12.88 4958 + Normal
03/11/2026 10 AM PDT 12.85 4928 - Normal
03/11/2026 11 AM PDT 12.84 4918 - Normal
03/11/2026 12 PM PDT 12.85 4928 + Normal
03/11/2026 01 PM PDT 12.84 4918 - Normal
03/11/2026 02 PM PDT 12.84 4918 0 Normal
03/11/2026 03 PM PDT 12.82 4898 - Normal
03/11/2026 04 PM PDT 12.83 4908 + Normal
03/11/2026 05 PM PDT 12.81 4888 - Normal
03/11/2026 06 PM PDT 12.82 4898 + Normal
03/11/2026 07 PM PDT 12.83 4908 + Normal
03/11/2026 08 PM PDT 12.82 4898 - Normal
03/11/2026 09 PM PDT 12.81 4888 - Normal
03/11/2026 10 PM PDT 12.80 4878 - Normal
03/11/2026 11 PM PDT 12.79 4868 - Normal
03/12/2026 12 AM PDT 12.79 4868 0 Normal
03/12/2026 01 AM PDT 12.78 4858 - Normal
03/12/2026 02 AM PDT 12.77 4848 - Normal
03/12/2026 03 AM PDT 12.77 4848 0 Normal
03/12/2026 04 AM PDT 12.76 4838 - Normal
03/12/2026 05 AM PDT 12.76 4838 0 Normal
03/12/2026 06 AM PDT 12.76 4838 0 Normal
03/12/2026 07 AM PDT 12.76 4838 0 Normal
03/12/2026 08 AM PDT 12.76 4838 0 Normal
03/12/2026 09 AM PDT 12.76 4838 0 Normal
03/12/2026 10 AM PDT 12.75 4828 - Normal
03/12/2026 11 AM PDT 12.74 4817 - Normal
03/12/2026 12 PM PDT 12.73 4807 - Normal
03/12/2026 01 PM PDT 12.71 4788 - Normal
03/12/2026 02 PM PDT 12.68 4758 - Normal
03/12/2026 03 PM PDT 12.66 4738 - Normal
03/12/2026 04 PM PDT 12.67 4748 + Normal
03/12/2026 05 PM PDT 12.66 4738 - Normal
03/12/2026 06 PM PDT 12.67 4748 + Normal
03/12/2026 07 PM PDT 12.67 4748 0 Normal
03/12/2026 08 PM PDT 12.67 4748 0 Normal
03/12/2026 09 PM PDT 12.67 4748 0 Normal
03/12/2026 10 PM PDT 12.66 4738 - Normal
03/12/2026 11 PM PDT 12.66 4738 0 Normal
03/13/2026 12 AM PDT 12.66 4738 0 Normal
03/13/2026 01 AM PDT 12.66 4738 0 Normal
03/13/2026 02 AM PDT 12.66 4738 0 Normal
03/13/2026 03 AM PDT 12.65 4728 - Normal
03/13/2026 04 AM PDT 12.65 4728 0 Normal
03/13/2026 05 AM PDT 12.65 4728 0 Normal
03/13/2026 06 AM PDT 12.65 4728 0 Normal
03/13/2026 07 AM PDT 12.64 4718 - Normal
03/13/2026 08 AM PDT 12.65 4728 + Normal
03/13/2026 09 AM PDT 12.65 4728 0 Normal
03/13/2026 10 AM PDT 12.64 4718 - Normal
03/13/2026 11 AM PDT 12.65 4728 + Normal
03/13/2026 12 PM PDT 12.63 4708 - Normal
03/13/2026 01 PM PDT 12.63 4708 0 Normal
03/13/2026 02 PM PDT 12.64 4718 + Normal
03/13/2026 03 PM PDT 12.63 4708 - Normal
03/13/2026 04 PM PDT 12.64 4718 + Normal
03/13/2026 05 PM PDT 12.64 4718 0 Normal
03/13/2026 06 PM PDT 12.67 4748 + Normal
03/13/2026 07 PM PDT 12.67 4748 0 Normal
03/13/2026 08 PM PDT 12.67 4748 0 Normal
03/13/2026 09 PM PDT 12.66 4738 - Normal
03/13/2026 10 PM PDT 12.66 4738 0 Normal
03/13/2026 11 PM PDT 12.65 4728 - Normal
03/14/2026 12 AM PDT 12.66 4738 + Normal
03/14/2026 01 AM PDT 12.66 4738 0 Normal
03/14/2026 02 AM PDT 12.67 4748 + Normal
03/14/2026 03 AM PDT 12.68 4758 + Normal
03/14/2026 04 AM PDT 12.69 4768 + Normal
03/14/2026 05 AM PDT 12.70 4778 + Normal
03/14/2026 06 AM PDT 12.71 4788 + Normal
03/14/2026 07 AM PDT 12.72 4797 + Normal
03/14/2026 08 AM PDT 12.72 4797 0 Normal
03/14/2026 09 AM PDT 12.73 4807 + Normal
03/14/2026 10 AM PDT 12.73 4807 0 Normal
03/14/2026 11 AM PDT 12.75 4828 + Normal
03/14/2026 12 PM PDT 12.72 4797 - Normal
03/14/2026 01 PM PDT 12.74 4817 + Normal
03/14/2026 02 PM PDT 12.75 4828 + Normal
03/14/2026 03 PM PDT 12.75 4828 0 Normal
03/14/2026 04 PM PDT 12.75 4828 0 Normal
03/14/2026 05 PM PDT 12.75 4828 0 Normal
03/14/2026 06 PM PDT 12.76 4838 + Normal
03/14/2026 07 PM PDT 12.78 4858 + Normal
03/14/2026 08 PM PDT 12.78 4858 0 Normal
03/14/2026 09 PM PDT 12.78 4858 0 Normal
03/14/2026 10 PM PDT 12.78 4858 0 Normal
03/14/2026 11 PM PDT 12.77 4848 - Normal
03/15/2026 12 AM PDT 12.78 4858 + Normal
03/15/2026 01 AM PDT 12.78 4858 0 Normal
03/15/2026 02 AM PDT 12.78 4858 0 Normal
03/15/2026 03 AM PDT 12.78 4858 0 Normal
03/15/2026 04 AM PDT 12.79 4868 + Normal
03/15/2026 05 AM PDT 12.80 4878 + Normal
03/15/2026 06 AM PDT 12.80 4878 0 Normal
03/15/2026 07 AM PDT 12.80 4878 0 Normal
03/15/2026 08 AM PDT 12.80 4878 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
03/15/2026 09 AM PDT 12.79 4868 Normal
03/15/2026 10 AM PDT 12.79 4868 0 Normal
03/15/2026 11 AM PDT 12.79 4868 0 Normal
03/15/2026 12 PM PDT 12.79 4868 0 Normal
03/15/2026 01 PM PDT 12.79 4868 0 Normal
03/15/2026 02 PM PDT 12.79 4868 0 Normal
03/15/2026 03 PM PDT 12.79 4868 0 Normal
03/15/2026 04 PM PDT 12.79 4868 0 Normal
03/15/2026 05 PM PDT 12.79 4868 0 Normal
03/15/2026 06 PM PDT 12.79 4868 0 Normal
03/15/2026 07 PM PDT 12.79 4868 0 Normal
03/15/2026 08 PM PDT 12.79 4868 0 Normal
03/15/2026 09 PM PDT 12.79 4868 0 Normal
03/15/2026 10 PM PDT 12.79 4868 0 Normal
03/15/2026 11 PM PDT 12.79 4868 0 Normal
03/16/2026 12 AM PDT 12.79 4868 0 Normal
03/16/2026 01 AM PDT 12.79 4868 0 Normal
03/16/2026 02 AM PDT 12.79 4868 0 Normal
03/16/2026 03 AM PDT 12.80 4878 + Normal
03/16/2026 04 AM PDT 12.80 4878 0 Normal
03/16/2026 05 AM PDT 12.80 4878 0 Normal
03/16/2026 06 AM PDT 12.80 4878 0 Normal
03/16/2026 07 AM PDT 12.80 4878 0 Normal
03/16/2026 08 AM PDT 12.80 4878 0 Normal
03/16/2026 09 AM PDT 12.80 4878 0 Normal
03/16/2026 10 AM PDT 12.80 4878 0 Normal
03/16/2026 11 AM PDT 12.80 4878 0 Normal
03/16/2026 12 PM PDT 12.80 4878 0 Normal
03/16/2026 01 PM PDT 12.80 4878 0 Normal
03/16/2026 02 PM PDT 12.80 4878 0 Normal
03/16/2026 03 PM PDT 12.81 4888 + Normal
03/16/2026 04 PM PDT 12.81 4888 0 Normal
03/16/2026 05 PM PDT 12.81 4888 0 Normal
03/16/2026 06 PM PDT 12.81 4888 0 Normal
03/16/2026 07 PM PDT 12.81 4888 0 Normal
03/16/2026 08 PM PDT 12.81 4888 0 Normal
03/16/2026 09 PM PDT 12.81 4888 0 Normal
03/16/2026 10 PM PDT 12.81 4888 0 Normal
03/16/2026 11 PM PDT 12.81 4888 0 Normal
03/17/2026 12 AM PDT 12.81 4888 0 Normal
03/17/2026 01 AM PDT 12.81 4888 0 Normal
03/17/2026 02 AM PDT 12.81 4888 0 Normal
03/17/2026 03 AM PDT 12.81 4888 0 Normal
03/17/2026 04 AM PDT 12.81 4888 0 Normal
03/17/2026 05 AM PDT 12.81 4888 0 Normal
03/17/2026 06 AM PDT 12.81 4888 0 Normal
03/17/2026 07 AM PDT 12.81 4888 0 Normal
03/17/2026 08 AM PDT 12.81 4888 0 Normal
03/17/2026 09 AM PDT 12.81 4888 0 Normal
03/17/2026 10 AM PDT 12.82 4898 + Normal
03/17/2026 11 AM PDT 12.82 4898 0 Normal
03/17/2026 12 PM PDT 12.82 4898 0 Normal
03/17/2026 01 PM PDT 12.82 4898 0 Normal
03/17/2026 02 PM PDT 12.82 4898 0 Normal
03/17/2026 03 PM PDT 12.82 4898 0 Normal
03/17/2026 04 PM PDT 12.82 4898 0 Normal
03/17/2026 05 PM PDT 12.82 4898 0 Normal
03/17/2026 06 PM PDT 12.82 4898 0 Normal
03/17/2026 07 PM PDT 12.82 4898 0 Normal
03/17/2026 08 PM PDT 12.82 4898 0 Normal
03/17/2026 09 PM PDT 12.82 4898 0 Normal
03/17/2026 10 PM PDT 12.82 4898 0 Normal
03/17/2026 11 PM PDT 12.82 4898 0 Normal
03/18/2026 12 AM PDT 12.82 4898 0 Normal
03/18/2026 01 AM PDT 12.82 4898 0 Normal
03/18/2026 02 AM PDT 12.82 4898 0 Normal
03/18/2026 03 AM PDT 12.82 4898 0 Normal
03/18/2026 04 AM PDT 12.82 4898 0 Normal
03/18/2026 05 AM PDT 12.83 4908 + Normal
03/18/2026 06 AM PDT 12.83 4908 0 Normal
03/18/2026 07 AM PDT 12.83 4908 0 Normal
03/18/2026 08 AM PDT 12.83 4908 0 Normal
03/18/2026 09 AM PDT 12.83 4908 0 Normal
03/18/2026 10 AM PDT 12.83 4908 0 Normal
03/18/2026 11 AM PDT 12.83 4908 0 Normal
03/18/2026 12 PM PDT 12.83 4908 0 Normal
03/18/2026 01 PM PDT 12.83 4908 0 Normal
03/18/2026 02 PM PDT 12.83 4908 0 Normal
03/18/2026 03 PM PDT 12.84 4918 + Normal
03/18/2026 04 PM PDT 12.84 4918 0 Normal
03/18/2026 05 PM PDT 12.84 4918 0 Normal
03/18/2026 06 PM PDT 12.84 4918 0 Normal
03/18/2026 07 PM PDT 12.84 4918 0 Normal
03/18/2026 08 PM PDT 12.84 4918 0 Normal
03/18/2026 09 PM PDT 12.84 4918 0 Normal
03/18/2026 10 PM PDT 12.84 4918 0 Normal
03/18/2026 11 PM PDT 12.84 4918 0 Normal
03/19/2026 12 AM PDT 12.84 4918 0 Normal
03/19/2026 01 AM PDT 12.84 4918 0 Normal
03/19/2026 02 AM PDT 12.84 4918 0 Normal
03/19/2026 03 AM PDT 12.84 4918 0 Normal
03/19/2026 04 AM PDT 12.84 4918 0 Normal
03/19/2026 05 AM PDT 12.84 4918 0 Normal
03/19/2026 06 AM PDT 12.84 4918 0 Normal
03/19/2026 07 AM PDT 12.84 4918 0 Normal
03/19/2026 08 AM PDT 12.84 4918 0 Normal
03/19/2026 09 AM PDT 12.85 4928 + Normal
03/19/2026 10 AM PDT 12.85 4928 0 Normal
03/19/2026 11 AM PDT 12.85 4928 0 Normal
03/19/2026 12 PM PDT 12.85 4928 0 Normal
03/19/2026 01 PM PDT 12.85 4928 0 Normal
03/19/2026 02 PM PDT 12.85 4928 0 Normal
03/19/2026 03 PM PDT 12.85 4928 0 Normal
03/19/2026 04 PM PDT 12.85 4928 0 Normal
03/19/2026 05 PM PDT 12.85 4928 0 Normal
03/19/2026 06 PM PDT 12.85 4928 0 Normal
03/19/2026 07 PM PDT 12.85 4928 0 Normal
03/19/2026 08 PM PDT 12.85 4928 0 Normal
03/19/2026 09 PM PDT 12.85 4928 0 Normal
03/19/2026 10 PM PDT 12.85 4928 0 Normal
03/19/2026 11 PM PDT 12.85 4928 0 Normal
03/20/2026 12 AM PDT 12.85 4928 0 Normal
03/20/2026 01 AM PDT 12.85 4928 0 Normal
03/20/2026 02 AM PDT 12.86 4938 + Normal
03/20/2026 03 AM PDT 12.86 4938 0 Normal
03/20/2026 04 AM PDT 12.86 4938 0 Normal
03/20/2026 05 AM PDT 12.86 4938 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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