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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 27 2026 at 12:52 PM PDT | Next Issuance: | Mar 28 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: 03/27/2026 at 12:52 PM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 03/22/2026 at 03:00 PM PDT
# Maximum Observed Stage: 11.12 Feet
# Maximum Observed Flow: 3313 cfs
#
# Earliest Date & Time of Maximum Forecast: 04/01/2026 at 04:00 AM PDT
# Maximum Forecast Stage: 9.81 Feet
# Maximum Forecast Flow: 2226 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
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
03/23/2026 08 AM PDT 10.92 3139 - Normal
03/23/2026 09 AM PDT 10.92 3139 0 Normal
03/23/2026 10 AM PDT 10.89 3113 - Normal
03/23/2026 11 AM PDT 10.88 3104 - Normal
03/23/2026 12 PM PDT 10.87 3095 - Normal
03/23/2026 01 PM PDT 10.83 3060 - Normal
03/23/2026 02 PM PDT 10.79 3025 - Normal
03/23/2026 03 PM PDT 10.78 3017 - Normal
03/23/2026 04 PM PDT 10.76 2999 - Normal
03/23/2026 05 PM PDT 10.73 2973 - Normal
03/23/2026 06 PM PDT 10.70 2948 - Normal
03/23/2026 07 PM PDT 10.70 2948 0 Normal
03/23/2026 08 PM PDT 10.68 2930 - Normal
03/23/2026 09 PM PDT 10.66 2913 - 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 10.57 2837 - Normal
03/24/2026 02 AM PDT 10.57 2837 0 Normal
03/24/2026 03 AM PDT 10.54 2811 - Normal
03/24/2026 04 AM PDT 10.53 2803 - Normal
03/24/2026 05 AM PDT 10.51 2786 - Normal
03/24/2026 06 AM PDT 10.50 2778 - Normal
03/24/2026 07 AM PDT 10.49 2769 - Normal
03/24/2026 08 AM PDT 10.46 2744 - Normal
03/24/2026 09 AM PDT 10.44 2728 - Normal
03/24/2026 10 AM PDT 10.41 2703 - Normal
03/24/2026 11 AM PDT 10.38 2678 - Normal
03/24/2026 12 PM PDT 10.37 2670 - Normal
03/24/2026 01 PM PDT 10.36 2662 - Normal
03/24/2026 02 PM PDT 10.34 2645 - Normal
03/24/2026 03 PM PDT 10.32 2629 - Normal
03/24/2026 04 PM PDT 10.30 2612 - Normal
03/24/2026 05 PM PDT 10.31 2621 + Normal
03/24/2026 06 PM PDT 10.29 2604 - Normal
03/24/2026 07 PM PDT 10.30 2612 + Normal
03/24/2026 08 PM PDT 10.30 2612 0 Normal
03/24/2026 09 PM PDT 10.28 2596 - Normal
03/24/2026 10 PM PDT 10.26 2580 - Normal
03/24/2026 11 PM PDT 10.23 2556 - Normal
03/25/2026 12 AM PDT 10.19 2523 - Normal
03/25/2026 01 AM PDT 10.20 2531 + Normal
03/25/2026 02 AM PDT 10.18 2515 - Normal
03/25/2026 03 AM PDT 10.16 2499 - Normal
03/25/2026 04 AM PDT 10.15 2491 - Normal
03/25/2026 05 AM PDT 10.14 2483 - Normal
03/25/2026 06 AM PDT 10.13 2475 - Normal
03/25/2026 07 AM PDT 10.12 2467 - Normal
03/25/2026 08 AM PDT 10.11 2459 - Normal
03/25/2026 09 AM PDT 10.10 2451 - Normal
03/25/2026 10 AM PDT 10.08 2436 - Normal
03/25/2026 11 AM PDT 10.07 2428 - Normal
03/25/2026 12 PM PDT 10.02 2388 - Normal
03/25/2026 01 PM PDT 10.01 2380 - Normal
03/25/2026 02 PM PDT 9.99 2365 - Normal
03/25/2026 03 PM PDT 9.98 2357 - Normal
03/25/2026 04 PM PDT 9.97 2349 - Normal
03/25/2026 05 PM PDT 9.95 2333 - Normal
03/25/2026 06 PM PDT 9.96 2341 + Normal
03/25/2026 07 PM PDT 9.95 2333 - Normal
03/25/2026 08 PM PDT 9.92 2310 - Normal
03/25/2026 09 PM PDT 9.91 2302 - Normal
03/25/2026 10 PM PDT 9.90 2295 - Normal
03/25/2026 11 PM PDT 9.90 2295 0 Normal
03/26/2026 12 AM PDT 9.87 2272 - Normal
03/26/2026 01 AM PDT 9.87 2272 0 Normal
03/26/2026 02 AM PDT 9.86 2264 - Normal
03/26/2026 03 AM PDT 9.85 2256 - Normal
03/26/2026 04 AM PDT 9.84 2249 - Normal
03/26/2026 05 AM PDT 9.83 2241 - Normal
03/26/2026 06 AM PDT 9.83 2241 0 Normal
03/26/2026 07 AM PDT 9.82 2233 - Normal
03/26/2026 08 AM PDT 9.79 2210 - Normal
03/26/2026 09 AM PDT 9.78 2203 - Normal
03/26/2026 10 AM PDT 9.78 2203 0 Normal
03/26/2026 11 AM PDT 9.77 2195 - Normal
03/26/2026 12 PM PDT 9.76 2188 - Normal
03/26/2026 01 PM PDT 9.75 2180 - Normal
03/26/2026 02 PM PDT 9.74 2173 - Normal
03/26/2026 03 PM PDT 9.73 2165 - Normal
03/26/2026 04 PM PDT 9.71 2150 - Normal
03/26/2026 05 PM PDT 9.70 2143 - Normal
03/26/2026 06 PM PDT 9.70 2143 0 Normal
03/26/2026 07 PM PDT 9.71 2150 + Normal
03/26/2026 08 PM PDT 9.69 2135 - Normal
03/26/2026 09 PM PDT 9.68 2128 - Normal
03/26/2026 10 PM PDT 9.67 2120 - Normal
03/26/2026 11 PM PDT 9.66 2113 - Normal
03/27/2026 12 AM PDT 9.65 2105 - Normal
03/27/2026 01 AM PDT 9.65 2105 0 Normal
03/27/2026 02 AM PDT 9.64 2098 - Normal
03/27/2026 03 AM PDT 9.63 2090 - Normal
03/27/2026 04 AM PDT 9.62 2083 - Normal
03/27/2026 05 AM PDT 9.61 2076 - Normal
03/27/2026 06 AM PDT 9.61 2076 0 Normal
03/27/2026 07 AM PDT 9.60 2068 - Normal
03/27/2026 08 AM PDT 9.59 2061 - Normal
03/27/2026 09 AM PDT 9.57 2046 - Normal
03/27/2026 10 AM PDT 9.55 2031 - Normal
03/27/2026 11 AM PDT 9.55 2031 0 Normal
03/27/2026 12 PM PDT 9.54 2024 - Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
03/27/2026 01 PM PDT 9.54 2024 Normal
03/27/2026 02 PM PDT 9.53 2017 - Normal
03/27/2026 03 PM PDT 9.52 2009 - Normal
03/27/2026 04 PM PDT 9.51 2002 - Normal
03/27/2026 05 PM PDT 9.51 2002 0 Normal
03/27/2026 06 PM PDT 9.50 1995 - Normal
03/27/2026 07 PM PDT 9.49 1988 - Normal
03/27/2026 08 PM PDT 9.48 1980 - Normal
03/27/2026 09 PM PDT 9.47 1973 - Normal
03/27/2026 10 PM PDT 9.47 1973 0 Normal
03/27/2026 11 PM PDT 9.46 1966 - Normal
03/28/2026 12 AM PDT 9.45 1959 - Normal
03/28/2026 01 AM PDT 9.45 1959 0 Normal
03/28/2026 02 AM PDT 9.44 1951 - Normal
03/28/2026 03 AM PDT 9.43 1944 - Normal
03/28/2026 04 AM PDT 9.43 1944 0 Normal
03/28/2026 05 AM PDT 9.42 1937 - Normal
03/28/2026 06 AM PDT 9.41 1930 - Normal
03/28/2026 07 AM PDT 9.41 1930 0 Normal
03/28/2026 08 AM PDT 9.40 1923 - Normal
03/28/2026 09 AM PDT 9.39 1916 - Normal
03/28/2026 10 AM PDT 9.39 1916 0 Normal
03/28/2026 11 AM PDT 9.38 1908 - Normal
03/28/2026 12 PM PDT 9.38 1908 0 Normal
03/28/2026 01 PM PDT 9.37 1901 - Normal
03/28/2026 02 PM PDT 9.37 1901 0 Normal
03/28/2026 03 PM PDT 9.36 1894 - Normal
03/28/2026 04 PM PDT 9.35 1887 - Normal
03/28/2026 05 PM PDT 9.35 1887 0 Normal
03/28/2026 06 PM PDT 9.34 1880 - Normal
03/28/2026 07 PM PDT 9.33 1873 - Normal
03/28/2026 08 PM PDT 9.33 1873 0 Normal
03/28/2026 09 PM PDT 9.32 1866 - Normal
03/28/2026 10 PM PDT 9.32 1866 0 Normal
03/28/2026 11 PM PDT 9.31 1859 - Normal
03/29/2026 12 AM PDT 9.31 1859 0 Normal
03/29/2026 01 AM PDT 9.30 1852 - Normal
03/29/2026 02 AM PDT 9.30 1852 0 Normal
03/29/2026 03 AM PDT 9.29 1845 - Normal
03/29/2026 04 AM PDT 9.29 1845 0 Normal
03/29/2026 05 AM PDT 9.28 1838 - Normal
03/29/2026 06 AM PDT 9.28 1838 0 Normal
03/29/2026 07 AM PDT 9.27 1831 - Normal
03/29/2026 08 AM PDT 9.27 1831 0 Normal
03/29/2026 09 AM PDT 9.27 1831 0 Normal
03/29/2026 10 AM PDT 9.26 1824 - Normal
03/29/2026 11 AM PDT 9.26 1824 0 Normal
03/29/2026 12 PM PDT 9.26 1824 0 Normal
03/29/2026 01 PM PDT 9.25 1817 - Normal
03/29/2026 02 PM PDT 9.25 1817 0 Normal
03/29/2026 03 PM PDT 9.25 1817 0 Normal
03/29/2026 04 PM PDT 9.24 1810 - Normal
03/29/2026 05 PM PDT 9.24 1810 0 Normal
03/29/2026 06 PM PDT 9.24 1810 0 Normal
03/29/2026 07 PM PDT 9.24 1810 0 Normal
03/29/2026 08 PM PDT 9.23 1803 - Normal
03/29/2026 09 PM PDT 9.23 1803 0 Normal
03/29/2026 10 PM PDT 9.23 1803 0 Normal
03/29/2026 11 PM PDT 9.23 1803 0 Normal
03/30/2026 12 AM PDT 9.23 1803 0 Normal
03/30/2026 01 AM PDT 9.24 1810 + Normal
03/30/2026 02 AM PDT 9.24 1810 0 Normal
03/30/2026 03 AM PDT 9.25 1817 + Normal
03/30/2026 04 AM PDT 9.25 1817 0 Normal
03/30/2026 05 AM PDT 9.26 1824 + Normal
03/30/2026 06 AM PDT 9.27 1831 + Normal
03/30/2026 07 AM PDT 9.28 1838 + Normal
03/30/2026 08 AM PDT 9.30 1852 + Normal
03/30/2026 09 AM PDT 9.31 1859 + Normal
03/30/2026 10 AM PDT 9.33 1873 + Normal
03/30/2026 11 AM PDT 9.34 1880 + Normal
03/30/2026 12 PM PDT 9.36 1894 + Normal
03/30/2026 01 PM PDT 9.38 1908 + Normal
03/30/2026 02 PM PDT 9.40 1923 + Normal
03/30/2026 03 PM PDT 9.41 1930 + Normal
03/30/2026 04 PM PDT 9.43 1944 + Normal
03/30/2026 05 PM PDT 9.45 1959 + Normal
03/30/2026 06 PM PDT 9.47 1973 + Normal
03/30/2026 07 PM PDT 9.48 1980 + Normal
03/30/2026 08 PM PDT 9.50 1995 + Normal
03/30/2026 09 PM PDT 9.52 2009 + Normal
03/30/2026 10 PM PDT 9.54 2024 + Normal
03/30/2026 11 PM PDT 9.55 2031 + Normal
03/31/2026 12 AM PDT 9.57 2046 + Normal
03/31/2026 01 AM PDT 9.58 2053 + Normal
03/31/2026 02 AM PDT 9.60 2068 + Normal
03/31/2026 03 AM PDT 9.61 2076 + Normal
03/31/2026 04 AM PDT 9.62 2083 + Normal
03/31/2026 05 AM PDT 9.63 2090 + Normal
03/31/2026 06 AM PDT 9.65 2105 + Normal
03/31/2026 07 AM PDT 9.66 2113 + Normal
03/31/2026 08 AM PDT 9.67 2120 + Normal
03/31/2026 09 AM PDT 9.68 2128 + Normal
03/31/2026 10 AM PDT 9.69 2135 + Normal
03/31/2026 11 AM PDT 9.70 2143 + Normal
03/31/2026 12 PM PDT 9.71 2150 + Normal
03/31/2026 01 PM PDT 9.72 2158 + Normal
03/31/2026 02 PM PDT 9.73 2165 + Normal
03/31/2026 03 PM PDT 9.73 2165 0 Normal
03/31/2026 04 PM PDT 9.74 2173 + Normal
03/31/2026 05 PM PDT 9.75 2180 + Normal
03/31/2026 06 PM PDT 9.76 2188 + Normal
03/31/2026 07 PM PDT 9.76 2188 0 Normal
03/31/2026 08 PM PDT 9.77 2195 + Normal
03/31/2026 09 PM PDT 9.77 2195 0 Normal
03/31/2026 10 PM PDT 9.78 2203 + Normal
03/31/2026 11 PM PDT 9.79 2210 + Normal
04/01/2026 12 AM PDT 9.79 2210 0 Normal
04/01/2026 01 AM PDT 9.79 2210 0 Normal
04/01/2026 02 AM PDT 9.80 2218 + Normal
04/01/2026 03 AM PDT 9.80 2218 0 Normal
04/01/2026 04 AM PDT 9.81 2226 + Normal
04/01/2026 05 AM PDT 9.81 2226 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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