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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 08 2026 at 7:17 AM PDT | Next Issuance: | Oct 09 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: 10/08/2026 at 07:17 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 10/06/2026 at 08:00 PM PDT
# Maximum Observed Stage: 8.28 Feet
# Maximum Observed Flow: 1194 cfs
#
# Earliest Date & Time of Maximum Forecast: 10/13/2026 at 01:00 AM PDT
# Maximum Forecast Stage: 8.22 Feet
# Maximum Forecast Flow: 1159 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
10/03/2026 07 AM PDT 7.77 912 Normal
10/03/2026 08 AM PDT 7.77 912 0 Normal
10/03/2026 09 AM PDT 7.78 917 + Normal
10/03/2026 10 AM PDT 7.78 917 0 Normal
10/03/2026 11 AM PDT 7.78 917 0 Normal
10/03/2026 12 PM PDT 7.79 922 + Normal
10/03/2026 01 PM PDT 7.79 922 0 Normal
10/03/2026 02 PM PDT 7.80 927 + Normal
10/03/2026 03 PM PDT 7.80 927 0 Normal
10/03/2026 04 PM PDT 7.82 938 + Normal
10/03/2026 05 PM PDT 7.82 938 0 Normal
10/03/2026 06 PM PDT 7.83 943 + Normal
10/03/2026 07 PM PDT 7.84 948 + Normal
10/03/2026 08 PM PDT 7.85 954 + Normal
10/03/2026 09 PM PDT 7.86 959 + Normal
10/03/2026 10 PM PDT 7.87 964 + Normal
10/03/2026 11 PM PDT 7.89 975 + Normal
10/04/2026 12 AM PDT 7.90 980 + Normal
10/04/2026 01 AM PDT 7.93 997 + Normal
10/04/2026 02 AM PDT 7.94 1002 + Normal
10/04/2026 03 AM PDT 7.96 1013 + Normal
10/04/2026 04 AM PDT 7.98 1024 + Normal
10/04/2026 05 AM PDT 7.98 1024 0 Normal
10/04/2026 06 AM PDT 8.00 1035 + Normal
10/04/2026 07 AM PDT 8.00 1035 0 Normal
10/04/2026 08 AM PDT 8.02 1046 + Normal
10/04/2026 09 AM PDT 8.03 1051 + Normal
10/04/2026 10 AM PDT 8.05 1062 + Normal
10/04/2026 11 AM PDT 8.06 1068 + Normal
10/04/2026 12 PM PDT 8.09 1085 + Normal
10/04/2026 01 PM PDT 8.11 1096 + Normal
10/04/2026 02 PM PDT 8.14 1113 + Normal
10/04/2026 03 PM PDT 8.15 1119 + Normal
10/04/2026 04 PM PDT 8.16 1124 + Normal
10/04/2026 05 PM PDT 8.16 1124 0 Normal
10/04/2026 06 PM PDT 8.16 1124 0 Normal
10/04/2026 07 PM PDT 8.16 1124 0 Normal
10/04/2026 08 PM PDT 8.16 1124 0 Normal
10/04/2026 09 PM PDT 8.16 1124 0 Normal
10/04/2026 10 PM PDT 8.16 1124 0 Normal
10/04/2026 11 PM PDT 8.16 1124 0 Normal
10/05/2026 12 AM PDT 8.16 1124 0 Normal
10/05/2026 01 AM PDT 8.16 1124 0 Normal
10/05/2026 02 AM PDT 8.16 1124 0 Normal
10/05/2026 03 AM PDT 8.16 1124 0 Normal
10/05/2026 04 AM PDT 8.16 1124 0 Normal
10/05/2026 05 AM PDT 8.16 1124 0 Normal
10/05/2026 06 AM PDT 8.16 1124 0 Normal
10/05/2026 07 AM PDT 8.17 1130 + Normal
10/05/2026 08 AM PDT 8.17 1130 0 Normal
10/05/2026 09 AM PDT 8.17 1130 0 Normal
10/05/2026 10 AM PDT 8.17 1130 0 Normal
10/05/2026 11 AM PDT 8.17 1130 0 Normal
10/05/2026 12 PM PDT 8.18 1136 + Normal
10/05/2026 01 PM PDT 8.19 1142 + Normal
10/05/2026 02 PM PDT 8.21 1153 + Normal
10/05/2026 03 PM PDT 8.23 1165 + Normal
10/05/2026 04 PM PDT 8.23 1165 0 Normal
10/05/2026 05 PM PDT 8.25 1176 + Normal
10/05/2026 06 PM PDT 8.26 1182 + Normal
10/05/2026 07 PM PDT 8.26 1182 0 Normal
10/05/2026 08 PM PDT 8.27 1188 + Normal
10/05/2026 09 PM PDT 8.27 1188 0 Normal
10/05/2026 10 PM PDT 8.26 1182 - Normal
10/05/2026 11 PM PDT 8.26 1182 0 Normal
10/06/2026 12 AM PDT 8.25 1176 - Normal
10/06/2026 01 AM PDT 8.25 1176 0 Normal
10/06/2026 02 AM PDT 8.25 1176 0 Normal
10/06/2026 03 AM PDT 8.24 1170 - Normal
10/06/2026 04 AM PDT 8.23 1165 - Normal
10/06/2026 05 AM PDT 8.24 1170 + Normal
10/06/2026 06 AM PDT 8.24 1170 0 Normal
10/06/2026 07 AM PDT 8.25 1176 + Normal
10/06/2026 08 AM PDT 8.25 1176 0 Normal
10/06/2026 09 AM PDT 8.26 1182 + Normal
10/06/2026 10 AM PDT 8.26 1182 0 Normal
10/06/2026 11 AM PDT 8.25 1176 - Normal
10/06/2026 12 PM PDT 8.25 1176 0 Normal
10/06/2026 01 PM PDT 8.25 1176 0 Normal
10/06/2026 02 PM PDT 8.26 1182 + Normal
10/06/2026 03 PM PDT 8.27 1188 + Normal
10/06/2026 04 PM PDT 8.28 1194 + Normal
10/06/2026 05 PM PDT 8.28 1194 0 Normal
10/06/2026 06 PM PDT 8.28 1194 0 Normal
10/06/2026 07 PM PDT 8.28 1194 0 Normal
10/06/2026 08 PM PDT 8.28 1194 0 Normal
10/06/2026 09 PM PDT 8.27 1188 - Normal
10/06/2026 10 PM PDT 8.26 1182 - Normal
10/06/2026 11 PM PDT 8.25 1176 - Normal
10/07/2026 12 AM PDT 8.24 1170 - Normal
10/07/2026 01 AM PDT 8.23 1165 - Normal
10/07/2026 02 AM PDT 8.23 1165 0 Normal
10/07/2026 03 AM PDT 8.23 1165 0 Normal
10/07/2026 04 AM PDT 8.22 1159 - Normal
10/07/2026 05 AM PDT 8.21 1153 - Normal
10/07/2026 06 AM PDT 8.21 1153 0 Normal
10/07/2026 07 AM PDT 8.21 1153 0 Normal
10/07/2026 08 AM PDT 8.20 1147 - Normal
10/07/2026 09 AM PDT 8.19 1142 - Normal
10/07/2026 10 AM PDT 8.19 1142 0 Normal
10/07/2026 11 AM PDT 8.15 1119 - Normal
10/07/2026 12 PM PDT 8.16 1124 + Normal
10/07/2026 01 PM PDT 8.12 1102 - Normal
10/07/2026 02 PM PDT 8.11 1096 - Normal
10/07/2026 03 PM PDT 8.11 1096 0 Normal
10/07/2026 04 PM PDT 8.08 1079 - Normal
10/07/2026 05 PM PDT 8.07 1074 - Normal
10/07/2026 06 PM PDT 8.05 1062 - Normal
10/07/2026 07 PM PDT 8.04 1057 - Normal
10/07/2026 08 PM PDT 8.01 1040 - Normal
10/07/2026 09 PM PDT 8.00 1035 - Normal
10/07/2026 10 PM PDT 7.99 1029 - Normal
10/07/2026 11 PM PDT 7.97 1018 - Normal
10/08/2026 12 AM PDT 7.95 1007 - Normal
10/08/2026 01 AM PDT 7.95 1007 0 Normal
10/08/2026 02 AM PDT 7.93 997 - Normal
10/08/2026 03 AM PDT 7.93 997 0 Normal
10/08/2026 04 AM PDT 7.92 991 - Normal
10/08/2026 05 AM PDT 7.92 991 0 Normal
10/08/2026 06 AM PDT 7.92 991 0 Normal
10/08/2026 07 AM PDT 7.92 991 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
10/08/2026 08 AM PDT 7.92 991 Normal
10/08/2026 09 AM PDT 7.93 997 + Normal
10/08/2026 10 AM PDT 7.93 997 0 Normal
10/08/2026 11 AM PDT 7.94 1002 + Normal
10/08/2026 12 PM PDT 7.95 1007 + Normal
10/08/2026 01 PM PDT 7.95 1007 0 Normal
10/08/2026 02 PM PDT 7.96 1013 + Normal
10/08/2026 03 PM PDT 7.97 1018 + Normal
10/08/2026 04 PM PDT 7.97 1018 0 Normal
10/08/2026 05 PM PDT 7.98 1024 + Normal
10/08/2026 06 PM PDT 7.99 1029 + Normal
10/08/2026 07 PM PDT 8.00 1035 + Normal
10/08/2026 08 PM PDT 8.00 1035 0 Normal
10/08/2026 09 PM PDT 8.01 1040 + Normal
10/08/2026 10 PM PDT 8.02 1046 + Normal
10/08/2026 11 PM PDT 8.02 1046 0 Normal
10/09/2026 12 AM PDT 8.03 1051 + Normal
10/09/2026 01 AM PDT 8.04 1057 + Normal
10/09/2026 02 AM PDT 8.04 1057 0 Normal
10/09/2026 03 AM PDT 8.05 1062 + Normal
10/09/2026 04 AM PDT 8.05 1062 0 Normal
10/09/2026 05 AM PDT 8.06 1068 + Normal
10/09/2026 06 AM PDT 8.06 1068 0 Normal
10/09/2026 07 AM PDT 8.07 1074 + Normal
10/09/2026 08 AM PDT 8.07 1074 0 Normal
10/09/2026 09 AM PDT 8.08 1079 + Normal
10/09/2026 10 AM PDT 8.08 1079 0 Normal
10/09/2026 11 AM PDT 8.09 1085 + Normal
10/09/2026 12 PM PDT 8.09 1085 0 Normal
10/09/2026 01 PM PDT 8.09 1085 0 Normal
10/09/2026 02 PM PDT 8.10 1090 + Normal
10/09/2026 03 PM PDT 8.10 1090 0 Normal
10/09/2026 04 PM PDT 8.10 1090 0 Normal
10/09/2026 05 PM PDT 8.10 1090 0 Normal
10/09/2026 06 PM PDT 8.11 1096 + Normal
10/09/2026 07 PM PDT 8.11 1096 0 Normal
10/09/2026 08 PM PDT 8.11 1096 0 Normal
10/09/2026 09 PM PDT 8.11 1096 0 Normal
10/09/2026 10 PM PDT 8.12 1102 + Normal
10/09/2026 11 PM PDT 8.12 1102 0 Normal
10/10/2026 12 AM PDT 8.12 1102 0 Normal
10/10/2026 01 AM PDT 8.12 1102 0 Normal
10/10/2026 02 AM PDT 8.12 1102 0 Normal
10/10/2026 03 AM PDT 8.13 1107 + Normal
10/10/2026 04 AM PDT 8.13 1107 0 Normal
10/10/2026 05 AM PDT 8.13 1107 0 Normal
10/10/2026 06 AM PDT 8.13 1107 0 Normal
10/10/2026 07 AM PDT 8.13 1107 0 Normal
10/10/2026 08 AM PDT 8.13 1107 0 Normal
10/10/2026 09 AM PDT 8.13 1107 0 Normal
10/10/2026 10 AM PDT 8.14 1113 + Normal
10/10/2026 11 AM PDT 8.14 1113 0 Normal
10/10/2026 12 PM PDT 8.14 1113 0 Normal
10/10/2026 01 PM PDT 8.14 1113 0 Normal
10/10/2026 02 PM PDT 8.14 1113 0 Normal
10/10/2026 03 PM PDT 8.14 1113 0 Normal
10/10/2026 04 PM PDT 8.14 1113 0 Normal
10/10/2026 05 PM PDT 8.14 1113 0 Normal
10/10/2026 06 PM PDT 8.14 1113 0 Normal
10/10/2026 07 PM PDT 8.15 1119 + Normal
10/10/2026 08 PM PDT 8.15 1119 0 Normal
10/10/2026 09 PM PDT 8.15 1119 0 Normal
10/10/2026 10 PM PDT 8.15 1119 0 Normal
10/10/2026 11 PM PDT 8.15 1119 0 Normal
10/11/2026 12 AM PDT 8.15 1119 0 Normal
10/11/2026 01 AM PDT 8.15 1119 0 Normal
10/11/2026 02 AM PDT 8.15 1119 0 Normal
10/11/2026 03 AM PDT 8.16 1124 + Normal
10/11/2026 04 AM PDT 8.16 1124 0 Normal
10/11/2026 05 AM PDT 8.16 1124 0 Normal
10/11/2026 06 AM PDT 8.16 1124 0 Normal
10/11/2026 07 AM PDT 8.16 1124 0 Normal
10/11/2026 08 AM PDT 8.16 1124 0 Normal
10/11/2026 09 AM PDT 8.16 1124 0 Normal
10/11/2026 10 AM PDT 8.16 1124 0 Normal
10/11/2026 11 AM PDT 8.17 1130 + Normal
10/11/2026 12 PM PDT 8.17 1130 0 Normal
10/11/2026 01 PM PDT 8.17 1130 0 Normal
10/11/2026 02 PM PDT 8.17 1130 0 Normal
10/11/2026 03 PM PDT 8.17 1130 0 Normal
10/11/2026 04 PM PDT 8.17 1130 0 Normal
10/11/2026 05 PM PDT 8.17 1130 0 Normal
10/11/2026 06 PM PDT 8.17 1130 0 Normal
10/11/2026 07 PM PDT 8.18 1136 + Normal
10/11/2026 08 PM PDT 8.18 1136 0 Normal
10/11/2026 09 PM PDT 8.18 1136 0 Normal
10/11/2026 10 PM PDT 8.18 1136 0 Normal
10/11/2026 11 PM PDT 8.18 1136 0 Normal
10/12/2026 12 AM PDT 8.18 1136 0 Normal
10/12/2026 01 AM PDT 8.18 1136 0 Normal
10/12/2026 02 AM PDT 8.19 1142 + Normal
10/12/2026 03 AM PDT 8.19 1142 0 Normal
10/12/2026 04 AM PDT 8.19 1142 0 Normal
10/12/2026 05 AM PDT 8.19 1142 0 Normal
10/12/2026 06 AM PDT 8.19 1142 0 Normal
10/12/2026 07 AM PDT 8.19 1142 0 Normal
10/12/2026 08 AM PDT 8.19 1142 0 Normal
10/12/2026 09 AM PDT 8.20 1147 + Normal
10/12/2026 10 AM PDT 8.20 1147 0 Normal
10/12/2026 11 AM PDT 8.20 1147 0 Normal
10/12/2026 12 PM PDT 8.20 1147 0 Normal
10/12/2026 01 PM PDT 8.20 1147 0 Normal
10/12/2026 02 PM PDT 8.20 1147 0 Normal
10/12/2026 03 PM PDT 8.20 1147 0 Normal
10/12/2026 04 PM PDT 8.20 1147 0 Normal
10/12/2026 05 PM PDT 8.21 1153 + Normal
10/12/2026 06 PM PDT 8.21 1153 0 Normal
10/12/2026 07 PM PDT 8.21 1153 0 Normal
10/12/2026 08 PM PDT 8.21 1153 0 Normal
10/12/2026 09 PM PDT 8.21 1153 0 Normal
10/12/2026 10 PM PDT 8.21 1153 0 Normal
10/12/2026 11 PM PDT 8.21 1153 0 Normal
10/13/2026 12 AM PDT 8.21 1153 0 Normal
10/13/2026 01 AM PDT 8.22 1159 + Normal
10/13/2026 02 AM PDT 8.22 1159 0 Normal
10/13/2026 03 AM PDT 8.22 1159 0 Normal
10/13/2026 04 AM PDT 8.22 1159 0 Normal
10/13/2026 05 AM PDT 8.22 1159 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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