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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: | May 29 2026 at 7:45 AM PDT | Next Issuance: | May 30 2026 at 9:00 AM PDT
| |
| 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: 05/29/2026 at 07:45 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 05/24/2026 at 07:00 AM PDT
# Maximum Observed Stage: 9.91 Feet
# Maximum Observed Flow: 2302 cfs
#
# Earliest Date & Time of Maximum Forecast: 06/03/2026 at 05:00 AM PDT
# Maximum Forecast Stage: 9.54 Feet
# Maximum Forecast Flow: 2024 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
05/24/2026 07 AM PDT 9.91 2302 Normal
05/24/2026 08 AM PDT 9.89 2287 - Normal
05/24/2026 09 AM PDT 9.88 2279 - Normal
05/24/2026 10 AM PDT 9.88 2279 0 Normal
05/24/2026 11 AM PDT 9.87 2272 - Normal
05/24/2026 12 PM PDT 9.87 2272 0 Normal
05/24/2026 01 PM PDT 9.85 2256 - Normal
05/24/2026 02 PM PDT 9.83 2241 - Normal
05/24/2026 03 PM PDT 9.83 2241 0 Normal
05/24/2026 04 PM PDT 9.82 2233 - Normal
05/24/2026 05 PM PDT 9.80 2218 - Normal
05/24/2026 06 PM PDT 9.80 2218 0 Normal
05/24/2026 07 PM PDT 9.79 2210 - Normal
05/24/2026 08 PM PDT 9.80 2218 + Normal
05/24/2026 09 PM PDT 9.82 2233 + Normal
05/24/2026 10 PM PDT 9.82 2233 0 Normal
05/24/2026 11 PM PDT 9.83 2241 + Normal
05/25/2026 12 AM PDT 9.83 2241 0 Normal
05/25/2026 01 AM PDT 9.84 2249 + Normal
05/25/2026 02 AM PDT 9.85 2256 + Normal
05/25/2026 03 AM PDT 9.85 2256 0 Normal
05/25/2026 04 AM PDT 9.86 2264 + Normal
05/25/2026 05 AM PDT 9.86 2264 0 Normal
05/25/2026 06 AM PDT 9.85 2256 - Normal
05/25/2026 07 AM PDT 9.85 2256 0 Normal
05/25/2026 08 AM PDT 9.83 2241 - Normal
05/25/2026 09 AM PDT 9.80 2218 - Normal
05/25/2026 10 AM PDT 9.78 2203 - Normal
05/25/2026 11 AM PDT 9.74 2173 - Normal
05/25/2026 12 PM PDT 9.73 2165 - Normal
05/25/2026 01 PM PDT 9.70 2143 - Normal
05/25/2026 02 PM PDT 9.67 2120 - Normal
05/25/2026 03 PM PDT 9.64 2098 - Normal
05/25/2026 04 PM PDT 9.62 2083 - Normal
05/25/2026 05 PM PDT 9.59 2061 - Normal
05/25/2026 06 PM PDT 9.57 2046 - Normal
05/25/2026 07 PM PDT 9.55 2031 - Normal
05/25/2026 08 PM PDT 9.54 2024 - Normal
05/25/2026 09 PM PDT 9.52 2009 - Normal
05/25/2026 10 PM PDT 9.53 2017 + Normal
05/25/2026 11 PM PDT 9.52 2009 - Normal
05/26/2026 12 AM PDT 9.55 2031 + Normal
05/26/2026 01 AM PDT 9.54 2024 - Normal
05/26/2026 02 AM PDT 9.53 2017 - Normal
05/26/2026 03 AM PDT 9.54 2024 + Normal
05/26/2026 04 AM PDT 9.54 2024 0 Normal
05/26/2026 05 AM PDT 9.52 2009 - Normal
05/26/2026 06 AM PDT 9.54 2024 + Normal
05/26/2026 07 AM PDT 9.54 2024 0 Normal
05/26/2026 08 AM PDT 9.51 2002 - Normal
05/26/2026 09 AM PDT 9.51 2002 0 Normal
05/26/2026 10 AM PDT 9.49 1988 - Normal
05/26/2026 11 AM PDT 9.48 1980 - Normal
05/26/2026 12 PM PDT 9.46 1966 - Normal
05/26/2026 01 PM PDT 9.45 1959 - Normal
05/26/2026 02 PM PDT 9.41 1930 - Normal
05/26/2026 03 PM PDT 9.38 1908 - Normal
05/26/2026 04 PM PDT 9.38 1908 0 Normal
05/26/2026 05 PM PDT 9.34 1880 - Normal
05/26/2026 06 PM PDT 9.32 1866 - Normal
05/26/2026 07 PM PDT 9.30 1852 - Normal
05/26/2026 08 PM PDT 9.27 1831 - Normal
05/26/2026 09 PM PDT 9.27 1831 0 Normal
05/26/2026 10 PM PDT 9.26 1824 - Normal
05/26/2026 11 PM PDT 9.27 1831 + Normal
05/27/2026 12 AM PDT 9.27 1831 0 Normal
05/27/2026 01 AM PDT 9.26 1824 - Normal
05/27/2026 02 AM PDT 9.25 1817 - Normal
05/27/2026 03 AM PDT 9.24 1810 - Normal
05/27/2026 04 AM PDT 9.23 1803 - Normal
05/27/2026 05 AM PDT 9.23 1803 0 Normal
05/27/2026 06 AM PDT 9.22 1796 - Normal
05/27/2026 07 AM PDT 9.21 1789 - Normal
05/27/2026 08 AM PDT 9.22 1796 + Normal
05/27/2026 09 AM PDT 9.21 1789 - Normal
05/27/2026 10 AM PDT 9.21 1789 0 Normal
05/27/2026 11 AM PDT 9.19 1775 - Normal
05/27/2026 12 PM PDT 9.20 1782 + Normal
05/27/2026 01 PM PDT 9.18 1768 - Normal
05/27/2026 02 PM PDT 9.20 1782 + Normal
05/27/2026 03 PM PDT 9.20 1782 0 Normal
05/27/2026 04 PM PDT 9.19 1775 - Normal
05/27/2026 05 PM PDT 9.18 1768 - Normal
05/27/2026 06 PM PDT 9.18 1768 0 Normal
05/27/2026 07 PM PDT 9.16 1754 - Normal
05/27/2026 08 PM PDT 9.14 1740 - Normal
05/27/2026 09 PM PDT 9.13 1734 - Normal
05/27/2026 10 PM PDT 9.14 1740 + Normal
05/27/2026 11 PM PDT 9.14 1740 0 Normal
05/28/2026 12 AM PDT 9.11 1720 - Normal
05/28/2026 01 AM PDT 9.12 1727 + Normal
05/28/2026 02 AM PDT 9.12 1727 0 Normal
05/28/2026 03 AM PDT 9.11 1720 - Normal
05/28/2026 04 AM PDT 9.08 1700 - Normal
05/28/2026 05 AM PDT 9.09 1706 + Normal
05/28/2026 06 AM PDT 9.10 1713 + Normal
05/28/2026 07 AM PDT 9.10 1713 0 Normal
05/28/2026 08 AM PDT 9.10 1713 0 Normal
05/28/2026 09 AM PDT 9.12 1727 + Normal
05/28/2026 10 AM PDT 9.14 1740 + Normal
05/28/2026 11 AM PDT 9.14 1740 0 Normal
05/28/2026 12 PM PDT 9.14 1740 0 Normal
05/28/2026 01 PM PDT 9.13 1734 - Normal
05/28/2026 02 PM PDT 9.15 1747 + Normal
05/28/2026 03 PM PDT 9.14 1740 - Normal
05/28/2026 04 PM PDT 9.15 1747 + Normal
05/28/2026 05 PM PDT 9.16 1754 + Normal
05/28/2026 06 PM PDT 9.16 1754 0 Normal
05/28/2026 07 PM PDT 9.15 1747 - Normal
05/28/2026 08 PM PDT 9.19 1775 + Normal
05/28/2026 09 PM PDT 9.20 1782 + Normal
05/28/2026 10 PM PDT 9.23 1803 + Normal
05/28/2026 11 PM PDT 9.25 1817 + Normal
05/29/2026 12 AM PDT 9.26 1824 + Normal
05/29/2026 01 AM PDT 9.28 1838 + Normal
05/29/2026 02 AM PDT 9.29 1845 + Normal
05/29/2026 03 AM PDT 9.30 1852 + Normal
05/29/2026 04 AM PDT 9.31 1859 + Normal
05/29/2026 05 AM PDT 9.32 1866 + Normal
05/29/2026 06 AM PDT 9.32 1866 0 Normal
05/29/2026 07 AM PDT 9.32 1866 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
05/29/2026 08 AM PDT 9.33 1873 Normal
05/29/2026 09 AM PDT 9.33 1873 0 Normal
05/29/2026 10 AM PDT 9.33 1873 0 Normal
05/29/2026 11 AM PDT 9.33 1873 0 Normal
05/29/2026 12 PM PDT 9.34 1880 + Normal
05/29/2026 01 PM PDT 9.34 1880 0 Normal
05/29/2026 02 PM PDT 9.34 1880 0 Normal
05/29/2026 03 PM PDT 9.34 1880 0 Normal
05/29/2026 04 PM PDT 9.34 1880 0 Normal
05/29/2026 05 PM PDT 9.34 1880 0 Normal
05/29/2026 06 PM PDT 9.35 1887 + Normal
05/29/2026 07 PM PDT 9.35 1887 0 Normal
05/29/2026 08 PM PDT 9.35 1887 0 Normal
05/29/2026 09 PM PDT 9.35 1887 0 Normal
05/29/2026 10 PM PDT 9.36 1894 + Normal
05/29/2026 11 PM PDT 9.36 1894 0 Normal
05/30/2026 12 AM PDT 9.36 1894 0 Normal
05/30/2026 01 AM PDT 9.36 1894 0 Normal
05/30/2026 02 AM PDT 9.37 1901 + Normal
05/30/2026 03 AM PDT 9.37 1901 0 Normal
05/30/2026 04 AM PDT 9.37 1901 0 Normal
05/30/2026 05 AM PDT 9.37 1901 0 Normal
05/30/2026 06 AM PDT 9.38 1908 + Normal
05/30/2026 07 AM PDT 9.38 1908 0 Normal
05/30/2026 08 AM PDT 9.38 1908 0 Normal
05/30/2026 09 AM PDT 9.38 1908 0 Normal
05/30/2026 10 AM PDT 9.38 1908 0 Normal
05/30/2026 11 AM PDT 9.38 1908 0 Normal
05/30/2026 12 PM PDT 9.38 1908 0 Normal
05/30/2026 01 PM PDT 9.38 1908 0 Normal
05/30/2026 02 PM PDT 9.39 1916 + Normal
05/30/2026 03 PM PDT 9.39 1916 0 Normal
05/30/2026 04 PM PDT 9.39 1916 0 Normal
05/30/2026 05 PM PDT 9.39 1916 0 Normal
05/30/2026 06 PM PDT 9.39 1916 0 Normal
05/30/2026 07 PM PDT 9.39 1916 0 Normal
05/30/2026 08 PM PDT 9.39 1916 0 Normal
05/30/2026 09 PM PDT 9.39 1916 0 Normal
05/30/2026 10 PM PDT 9.39 1916 0 Normal
05/30/2026 11 PM PDT 9.39 1916 0 Normal
05/31/2026 12 AM PDT 9.39 1916 0 Normal
05/31/2026 01 AM PDT 9.39 1916 0 Normal
05/31/2026 02 AM PDT 9.40 1923 + Normal
05/31/2026 03 AM PDT 9.40 1923 0 Normal
05/31/2026 04 AM PDT 9.40 1923 0 Normal
05/31/2026 05 AM PDT 9.40 1923 0 Normal
05/31/2026 06 AM PDT 9.40 1923 0 Normal
05/31/2026 07 AM PDT 9.40 1923 0 Normal
05/31/2026 08 AM PDT 9.40 1923 0 Normal
05/31/2026 09 AM PDT 9.40 1923 0 Normal
05/31/2026 10 AM PDT 9.41 1930 + Normal
05/31/2026 11 AM PDT 9.41 1930 0 Normal
05/31/2026 12 PM PDT 9.41 1930 0 Normal
05/31/2026 01 PM PDT 9.41 1930 0 Normal
05/31/2026 02 PM PDT 9.41 1930 0 Normal
05/31/2026 03 PM PDT 9.41 1930 0 Normal
05/31/2026 04 PM PDT 9.42 1937 + Normal
05/31/2026 05 PM PDT 9.42 1937 0 Normal
05/31/2026 06 PM PDT 9.42 1937 0 Normal
05/31/2026 07 PM PDT 9.42 1937 0 Normal
05/31/2026 08 PM PDT 9.42 1937 0 Normal
05/31/2026 09 PM PDT 9.43 1944 + Normal
05/31/2026 10 PM PDT 9.43 1944 0 Normal
05/31/2026 11 PM PDT 9.43 1944 0 Normal
06/01/2026 12 AM PDT 9.43 1944 0 Normal
06/01/2026 01 AM PDT 9.43 1944 0 Normal
06/01/2026 02 AM PDT 9.44 1951 + Normal
06/01/2026 03 AM PDT 9.44 1951 0 Normal
06/01/2026 04 AM PDT 9.44 1951 0 Normal
06/01/2026 05 AM PDT 9.44 1951 0 Normal
06/01/2026 06 AM PDT 9.44 1951 0 Normal
06/01/2026 07 AM PDT 9.45 1959 + Normal
06/01/2026 08 AM PDT 9.45 1959 0 Normal
06/01/2026 09 AM PDT 9.45 1959 0 Normal
06/01/2026 10 AM PDT 9.45 1959 0 Normal
06/01/2026 11 AM PDT 9.45 1959 0 Normal
06/01/2026 12 PM PDT 9.46 1966 + Normal
06/01/2026 01 PM PDT 9.46 1966 0 Normal
06/01/2026 02 PM PDT 9.46 1966 0 Normal
06/01/2026 03 PM PDT 9.46 1966 0 Normal
06/01/2026 04 PM PDT 9.47 1973 + Normal
06/01/2026 05 PM PDT 9.47 1973 0 Normal
06/01/2026 06 PM PDT 9.47 1973 0 Normal
06/01/2026 07 PM PDT 9.47 1973 0 Normal
06/01/2026 08 PM PDT 9.47 1973 0 Normal
06/01/2026 09 PM PDT 9.48 1980 + Normal
06/01/2026 10 PM PDT 9.48 1980 0 Normal
06/01/2026 11 PM PDT 9.48 1980 0 Normal
06/02/2026 12 AM PDT 9.48 1980 0 Normal
06/02/2026 01 AM PDT 9.49 1988 + Normal
06/02/2026 02 AM PDT 9.49 1988 0 Normal
06/02/2026 03 AM PDT 9.49 1988 0 Normal
06/02/2026 04 AM PDT 9.49 1988 0 Normal
06/02/2026 05 AM PDT 9.50 1995 + Normal
06/02/2026 06 AM PDT 9.50 1995 0 Normal
06/02/2026 07 AM PDT 9.50 1995 0 Normal
06/02/2026 08 AM PDT 9.50 1995 0 Normal
06/02/2026 09 AM PDT 9.51 2002 + Normal
06/02/2026 10 AM PDT 9.51 2002 0 Normal
06/02/2026 11 AM PDT 9.51 2002 0 Normal
06/02/2026 12 PM PDT 9.51 2002 0 Normal
06/02/2026 01 PM PDT 9.51 2002 0 Normal
06/02/2026 02 PM PDT 9.52 2009 + Normal
06/02/2026 03 PM PDT 9.52 2009 0 Normal
06/02/2026 04 PM PDT 9.52 2009 0 Normal
06/02/2026 05 PM PDT 9.52 2009 0 Normal
06/02/2026 06 PM PDT 9.52 2009 0 Normal
06/02/2026 07 PM PDT 9.52 2009 0 Normal
06/02/2026 08 PM PDT 9.52 2009 0 Normal
06/02/2026 09 PM PDT 9.53 2017 + Normal
06/02/2026 10 PM PDT 9.53 2017 0 Normal
06/02/2026 11 PM PDT 9.53 2017 0 Normal
06/03/2026 12 AM PDT 9.53 2017 0 Normal
06/03/2026 01 AM PDT 9.53 2017 0 Normal
06/03/2026 02 AM PDT 9.53 2017 0 Normal
06/03/2026 03 AM PDT 9.53 2017 0 Normal
06/03/2026 04 AM PDT 9.53 2017 0 Normal
06/03/2026 05 AM PDT 9.54 2024 + 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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