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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: | Oct 17 2026 at 7:06 AM PDT | Next Issuance: | Oct 18 2026 at 9:00 AM PDT
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| Action: 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: 10/17/2026 at 07:06 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 10/17/2026 at 06:00 AM PDT
# Maximum Observed Stage: 8.78 Feet
# Maximum Observed Flow: 1501 cfs
#
# Earliest Date & Time of Maximum Forecast: 10/18/2026 at 11:00 PM PDT
# Maximum Forecast Stage: 10.03 Feet
# Maximum Forecast Flow: 2396 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
10/12/2026 07 AM PDT 8.43 1283 Normal
10/12/2026 08 AM PDT 8.44 1289 + Normal
10/12/2026 09 AM PDT 8.44 1289 0 Normal
10/12/2026 10 AM PDT 8.41 1271 - Normal
10/12/2026 11 AM PDT 8.43 1283 + Normal
10/12/2026 12 PM PDT 8.44 1289 + Normal
10/12/2026 01 PM PDT 8.44 1289 0 Normal
10/12/2026 02 PM PDT 8.44 1289 0 Normal
10/12/2026 03 PM PDT 8.44 1289 0 Normal
10/12/2026 04 PM PDT 8.46 1301 + Normal
10/12/2026 05 PM PDT 8.48 1313 + Normal
10/12/2026 06 PM PDT 8.48 1313 0 Normal
10/12/2026 07 PM PDT 8.49 1319 + Normal
10/12/2026 08 PM PDT 8.49 1319 0 Normal
10/12/2026 09 PM PDT 8.49 1319 0 Normal
10/12/2026 10 PM PDT 8.48 1313 - Normal
10/12/2026 11 PM PDT 8.46 1301 - Normal
10/13/2026 12 AM PDT 8.46 1301 0 Normal
10/13/2026 01 AM PDT 8.45 1295 - Normal
10/13/2026 02 AM PDT 8.44 1289 - Normal
10/13/2026 03 AM PDT 8.44 1289 0 Normal
10/13/2026 04 AM PDT 8.44 1289 0 Normal
10/13/2026 05 AM PDT 8.44 1289 0 Normal
10/13/2026 06 AM PDT 8.43 1283 - Normal
10/13/2026 07 AM PDT 8.43 1283 0 Normal
10/13/2026 08 AM PDT 8.42 1277 - Normal
10/13/2026 09 AM PDT 8.41 1271 - Normal
10/13/2026 10 AM PDT 8.36 1241 - Normal
10/13/2026 11 AM PDT 8.35 1235 - Normal
10/13/2026 12 PM PDT 8.36 1241 + Normal
10/13/2026 01 PM PDT 8.36 1241 0 Normal
10/13/2026 02 PM PDT 8.36 1241 0 Normal
10/13/2026 03 PM PDT 8.36 1241 0 Normal
10/13/2026 04 PM PDT 8.36 1241 0 Normal
10/13/2026 05 PM PDT 8.37 1247 + Normal
10/13/2026 06 PM PDT 8.39 1259 + Normal
10/13/2026 07 PM PDT 8.41 1271 + Normal
10/13/2026 08 PM PDT 8.40 1265 - Normal
10/13/2026 09 PM PDT 8.39 1259 - Normal
10/13/2026 10 PM PDT 8.38 1253 - Normal
10/13/2026 11 PM PDT 8.36 1241 - Normal
10/14/2026 12 AM PDT 8.34 1229 - Normal
10/14/2026 01 AM PDT 8.32 1217 - Normal
10/14/2026 02 AM PDT 8.30 1205 - Normal
10/14/2026 03 AM PDT 8.28 1194 - Normal
10/14/2026 04 AM PDT 8.26 1182 - Normal
10/14/2026 05 AM PDT 8.25 1176 - Normal
10/14/2026 06 AM PDT 8.23 1165 - Normal
10/14/2026 07 AM PDT 8.21 1153 - Normal
10/14/2026 08 AM PDT 8.19 1142 - Normal
10/14/2026 09 AM PDT 8.17 1130 - Normal
10/14/2026 10 AM PDT 8.14 1113 - Normal
10/14/2026 11 AM PDT 8.13 1107 - Normal
10/14/2026 12 PM PDT 8.11 1096 - Normal
10/14/2026 01 PM PDT 8.08 1079 - Normal
10/14/2026 02 PM PDT 8.06 1068 - Normal
10/14/2026 03 PM PDT 8.04 1057 - Normal
10/14/2026 04 PM PDT 8.01 1040 - Normal
10/14/2026 05 PM PDT 7.98 1024 - Normal
10/14/2026 06 PM PDT 7.98 1024 0 Normal
10/14/2026 07 PM PDT 7.94 1002 - Normal
10/14/2026 08 PM PDT 7.92 991 - Normal
10/14/2026 09 PM PDT 7.90 980 - Normal
10/14/2026 10 PM PDT 7.87 964 - Normal
10/14/2026 11 PM PDT 7.85 954 - Normal
10/15/2026 12 AM PDT 7.83 943 - Normal
10/15/2026 01 AM PDT 7.81 933 - Normal
10/15/2026 02 AM PDT 7.80 927 - Normal
10/15/2026 03 AM PDT 7.79 922 - Normal
10/15/2026 04 AM PDT 7.78 917 - Normal
10/15/2026 05 AM PDT 7.78 917 0 Normal
10/15/2026 06 AM PDT 7.78 917 0 Normal
10/15/2026 07 AM PDT 7.78 917 0 Normal
10/15/2026 08 AM PDT 7.78 917 0 Normal
10/15/2026 09 AM PDT 7.78 917 0 Normal
10/15/2026 10 AM PDT 7.78 917 0 Normal
10/15/2026 11 AM PDT 7.78 917 0 Normal
10/15/2026 12 PM PDT 7.78 917 0 Normal
10/15/2026 01 PM PDT 7.78 917 0 Normal
10/15/2026 02 PM PDT 7.78 917 0 Normal
10/15/2026 03 PM PDT 7.79 922 + Normal
10/15/2026 04 PM PDT 7.79 922 0 Normal
10/15/2026 05 PM PDT 7.79 922 0 Normal
10/15/2026 06 PM PDT 7.79 922 0 Normal
10/15/2026 07 PM PDT 7.80 927 + Normal
10/15/2026 08 PM PDT 7.82 938 + Normal
10/15/2026 09 PM PDT 7.82 938 0 Normal
10/15/2026 10 PM PDT 7.84 948 + Normal
10/15/2026 11 PM PDT 7.85 954 + Normal
10/16/2026 12 AM PDT 7.86 959 + Normal
10/16/2026 01 AM PDT 7.88 970 + Normal
10/16/2026 02 AM PDT 7.90 980 + Normal
10/16/2026 03 AM PDT 7.92 991 + Normal
10/16/2026 04 AM PDT 7.94 1002 + Normal
10/16/2026 05 AM PDT 7.96 1013 + Normal
10/16/2026 06 AM PDT 7.97 1018 + Normal
10/16/2026 07 AM PDT 8.00 1035 + Normal
10/16/2026 08 AM PDT 8.02 1046 + Normal
10/16/2026 09 AM PDT 8.04 1057 + Normal
10/16/2026 10 AM PDT 8.07 1074 + Normal
10/16/2026 11 AM PDT 8.10 1090 + Normal
10/16/2026 12 PM PDT 8.13 1107 + Normal
10/16/2026 01 PM PDT 8.16 1124 + Normal
10/16/2026 02 PM PDT 8.19 1142 + Normal
10/16/2026 03 PM PDT 8.22 1159 + Normal
10/16/2026 04 PM PDT 8.25 1176 + Normal
10/16/2026 05 PM PDT 8.28 1194 + Normal
10/16/2026 06 PM PDT 8.32 1217 + Normal
10/16/2026 07 PM PDT 8.35 1235 + Normal
10/16/2026 08 PM PDT 8.39 1259 + Normal
10/16/2026 09 PM PDT 8.43 1283 + Normal
10/16/2026 10 PM PDT 8.46 1301 + Normal
10/16/2026 11 PM PDT 8.51 1331 + Normal
10/17/2026 12 AM PDT 8.54 1350 + Normal
10/17/2026 01 AM PDT 8.58 1375 + Normal
10/17/2026 02 AM PDT 8.62 1400 + Normal
10/17/2026 03 AM PDT 8.66 1425 + Normal
10/17/2026 04 AM PDT 8.70 1450 + Normal
10/17/2026 05 AM PDT 8.73 1469 + Normal
10/17/2026 06 AM PDT 8.78 1501 + Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
10/17/2026 07 AM PDT 8.83 1533 Normal
10/17/2026 08 AM PDT 8.88 1566 + Normal
10/17/2026 09 AM PDT 8.93 1599 + Normal
10/17/2026 10 AM PDT 8.97 1626 + Normal
10/17/2026 11 AM PDT 9.02 1659 + Normal
10/17/2026 12 PM PDT 9.06 1686 + Normal
10/17/2026 01 PM PDT 9.10 1713 + Normal
10/17/2026 02 PM PDT 9.14 1740 + Normal
10/17/2026 03 PM PDT 9.18 1768 + Normal
10/17/2026 04 PM PDT 9.21 1789 + Normal
10/17/2026 05 PM PDT 9.25 1817 + Normal
10/17/2026 06 PM PDT 9.28 1838 + Normal
10/17/2026 07 PM PDT 9.32 1866 + Normal
10/17/2026 08 PM PDT 9.35 1887 + Normal
10/17/2026 09 PM PDT 9.38 1908 + Normal
10/17/2026 10 PM PDT 9.42 1937 + Normal
10/17/2026 11 PM PDT 9.45 1959 + Normal
10/18/2026 12 AM PDT 9.49 1988 + Normal
10/18/2026 01 AM PDT 9.52 2009 + Normal
10/18/2026 02 AM PDT 9.55 2031 + Normal
10/18/2026 03 AM PDT 9.59 2061 + Normal
10/18/2026 04 AM PDT 9.62 2083 + Normal
10/18/2026 05 AM PDT 9.65 2105 + Normal
10/18/2026 06 AM PDT 9.68 2128 + Normal
10/18/2026 07 AM PDT 9.71 2150 + Normal
10/18/2026 08 AM PDT 9.74 2173 + Normal
10/18/2026 09 AM PDT 9.77 2195 + Normal
10/18/2026 10 AM PDT 9.79 2210 + Normal
10/18/2026 11 AM PDT 9.82 2233 + Normal
10/18/2026 12 PM PDT 9.84 2249 + Normal
10/18/2026 01 PM PDT 9.87 2272 + Normal
10/18/2026 02 PM PDT 9.89 2287 + Normal
10/18/2026 03 PM PDT 9.91 2302 + Normal
10/18/2026 04 PM PDT 9.94 2326 + Normal
10/18/2026 05 PM PDT 9.96 2341 + Normal
10/18/2026 06 PM PDT 9.97 2349 + Normal
10/18/2026 07 PM PDT 9.99 2365 + Normal
10/18/2026 08 PM PDT 10.00 2373 + Normal
10/18/2026 09 PM PDT 10.02 2388 + Normal
10/18/2026 10 PM PDT 10.02 2388 0 Normal
10/18/2026 11 PM PDT 10.03 2396 + Normal
10/19/2026 12 AM PDT 10.03 2396 0 Normal
10/19/2026 01 AM PDT 10.03 2396 0 Normal
10/19/2026 02 AM PDT 10.03 2396 0 Normal
10/19/2026 03 AM PDT 10.03 2396 0 Normal
10/19/2026 04 AM PDT 10.02 2388 - Normal
10/19/2026 05 AM PDT 10.02 2388 0 Normal
10/19/2026 06 AM PDT 10.01 2380 - Normal
10/19/2026 07 AM PDT 10.00 2373 - Normal
10/19/2026 08 AM PDT 9.99 2365 - Normal
10/19/2026 09 AM PDT 9.97 2349 - Normal
10/19/2026 10 AM PDT 9.96 2341 - Normal
10/19/2026 11 AM PDT 9.95 2333 - Normal
10/19/2026 12 PM PDT 9.94 2326 - Normal
10/19/2026 01 PM PDT 9.93 2318 - Normal
10/19/2026 02 PM PDT 9.91 2302 - Normal
10/19/2026 03 PM PDT 9.90 2295 - Normal
10/19/2026 04 PM PDT 9.89 2287 - Normal
10/19/2026 05 PM PDT 9.88 2279 - Normal
10/19/2026 06 PM PDT 9.87 2272 - Normal
10/19/2026 07 PM PDT 9.85 2256 - Normal
10/19/2026 08 PM PDT 9.84 2249 - Normal
10/19/2026 09 PM PDT 9.82 2233 - Normal
10/19/2026 10 PM PDT 9.81 2226 - Normal
10/19/2026 11 PM PDT 9.79 2210 - Normal
10/20/2026 12 AM PDT 9.77 2195 - Normal
10/20/2026 01 AM PDT 9.75 2180 - Normal
10/20/2026 02 AM PDT 9.72 2158 - Normal
10/20/2026 03 AM PDT 9.70 2143 - Normal
10/20/2026 04 AM PDT 9.67 2120 - Normal
10/20/2026 05 AM PDT 9.64 2098 - Normal
10/20/2026 06 AM PDT 9.61 2076 - Normal
10/20/2026 07 AM PDT 9.58 2053 - Normal
10/20/2026 08 AM PDT 9.55 2031 - Normal
10/20/2026 09 AM PDT 9.52 2009 - Normal
10/20/2026 10 AM PDT 9.49 1988 - Normal
10/20/2026 11 AM PDT 9.45 1959 - Normal
10/20/2026 12 PM PDT 9.42 1937 - Normal
10/20/2026 01 PM PDT 9.39 1916 - Normal
10/20/2026 02 PM PDT 9.36 1894 - Normal
10/20/2026 03 PM PDT 9.32 1866 - Normal
10/20/2026 04 PM PDT 9.29 1845 - Normal
10/20/2026 05 PM PDT 9.26 1824 - Normal
10/20/2026 06 PM PDT 9.23 1803 - Normal
10/20/2026 07 PM PDT 9.20 1782 - Normal
10/20/2026 08 PM PDT 9.18 1768 - Normal
10/20/2026 09 PM PDT 9.15 1747 - Normal
10/20/2026 10 PM PDT 9.12 1727 - Normal
10/20/2026 11 PM PDT 9.09 1706 - Normal
10/21/2026 12 AM PDT 9.06 1686 - Normal
10/21/2026 01 AM PDT 9.03 1666 - Normal
10/21/2026 02 AM PDT 9.00 1646 - Normal
10/21/2026 03 AM PDT 8.96 1619 - Normal
10/21/2026 04 AM PDT 8.93 1599 - Normal
10/21/2026 05 AM PDT 8.90 1579 - Normal
10/21/2026 06 AM PDT 8.87 1560 - Normal
10/21/2026 07 AM PDT 8.84 1540 - Normal
10/21/2026 08 AM PDT 8.81 1520 - Normal
10/21/2026 09 AM PDT 8.78 1501 - Normal
10/21/2026 10 AM PDT 8.74 1475 - Normal
10/21/2026 11 AM PDT 8.71 1456 - Normal
10/21/2026 12 PM PDT 8.68 1437 - Normal
10/21/2026 01 PM PDT 8.64 1412 - Normal
10/21/2026 02 PM PDT 8.62 1400 - Normal
10/21/2026 03 PM PDT 8.59 1381 - Normal
10/21/2026 04 PM PDT 8.56 1362 - Normal
10/21/2026 05 PM PDT 8.53 1344 - Normal
10/21/2026 06 PM PDT 8.50 1325 - Normal
10/21/2026 07 PM PDT 8.48 1313 - Normal
10/21/2026 08 PM PDT 8.45 1295 - Normal
10/21/2026 09 PM PDT 8.43 1283 - Normal
10/21/2026 10 PM PDT 8.41 1271 - Normal
10/21/2026 11 PM PDT 8.39 1259 - Normal
10/22/2026 12 AM PDT 8.38 1253 - Normal
10/22/2026 01 AM PDT 8.37 1247 - Normal
10/22/2026 02 AM PDT 8.36 1241 - Normal
10/22/2026 03 AM PDT 8.36 1241 0 Normal
10/22/2026 04 AM PDT 8.36 1241 0 Normal
10/22/2026 05 AM PDT 8.36 1241 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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