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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: | Jun 20 2026 at 8:15 AM PDT | Next Issuance: | Jun 21 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: 06/20/2026 at 08:15 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 06/20/2026 at 04:00 AM PDT
# Maximum Observed Stage: 9.01 Feet
# Maximum Observed Flow: 1652 cfs
#
# Earliest Date & Time of Maximum Forecast: 06/25/2026 at 05:00 AM PDT
# Maximum Forecast Stage: 9.29 Feet
# Maximum Forecast Flow: 1845 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
06/15/2026 08 AM PDT 8.41 1271 Normal
06/15/2026 09 AM PDT 8.41 1271 0 Normal
06/15/2026 10 AM PDT 8.40 1265 - Normal
06/15/2026 11 AM PDT 8.37 1247 - Normal
06/15/2026 12 PM PDT 8.33 1223 - Normal
06/15/2026 01 PM PDT 8.30 1205 - Normal
06/15/2026 02 PM PDT 8.28 1194 - Normal
06/15/2026 03 PM PDT 8.25 1176 - Normal
06/15/2026 04 PM PDT 8.22 1159 - Normal
06/15/2026 05 PM PDT 8.19 1142 - Normal
06/15/2026 06 PM PDT 8.20 1147 + Normal
06/15/2026 07 PM PDT 8.18 1136 - Normal
06/15/2026 08 PM PDT 8.17 1130 - Normal
06/15/2026 09 PM PDT 8.18 1136 + Normal
06/15/2026 10 PM PDT 8.19 1142 + Normal
06/15/2026 11 PM PDT 8.20 1147 + Normal
06/16/2026 12 AM PDT 8.20 1147 0 Normal
06/16/2026 01 AM PDT 8.20 1147 0 Normal
06/16/2026 02 AM PDT 8.19 1142 - Normal
06/16/2026 03 AM PDT 8.19 1142 0 Normal
06/16/2026 04 AM PDT 8.19 1142 0 Normal
06/16/2026 05 AM PDT 8.19 1142 0 Normal
06/16/2026 06 AM PDT 8.19 1142 0 Normal
06/16/2026 07 AM PDT 8.17 1130 - Normal
06/16/2026 08 AM PDT 8.18 1136 + Normal
06/16/2026 09 AM PDT 8.18 1136 0 Normal
06/16/2026 10 AM PDT 8.17 1130 - Normal
06/16/2026 11 AM PDT 8.19 1142 + Normal
06/16/2026 12 PM PDT 8.21 1153 + Normal
06/16/2026 01 PM PDT 8.24 1170 + Normal
06/16/2026 02 PM PDT 8.26 1182 + Normal
06/16/2026 03 PM PDT 8.26 1182 0 Normal
06/16/2026 04 PM PDT 8.29 1200 + Normal
06/16/2026 05 PM PDT 8.30 1205 + Normal
06/16/2026 06 PM PDT 8.31 1211 + Normal
06/16/2026 07 PM PDT 8.34 1229 + Normal
06/16/2026 08 PM PDT 8.38 1253 + Normal
06/16/2026 09 PM PDT 8.41 1271 + Normal
06/16/2026 10 PM PDT 8.43 1283 + Normal
06/16/2026 11 PM PDT 8.51 1331 + Normal
06/17/2026 12 AM PDT 8.54 1350 + Normal
06/17/2026 01 AM PDT 8.57 1368 + Normal
06/17/2026 02 AM PDT 8.60 1387 + Normal
06/17/2026 03 AM PDT 8.62 1400 + Normal
06/17/2026 04 AM PDT 8.66 1425 + Normal
06/17/2026 05 AM PDT 8.69 1444 + Normal
06/17/2026 06 AM PDT 8.69 1444 0 Normal
06/17/2026 07 AM PDT 8.72 1463 + Normal
06/17/2026 08 AM PDT 8.72 1463 0 Normal
06/17/2026 09 AM PDT 8.74 1475 + Normal
06/17/2026 10 AM PDT 8.76 1488 + Normal
06/17/2026 11 AM PDT 8.77 1495 + Normal
06/17/2026 12 PM PDT 8.80 1514 + Normal
06/17/2026 01 PM PDT 8.81 1520 + Normal
06/17/2026 02 PM PDT 8.84 1540 + Normal
06/17/2026 03 PM PDT 8.83 1533 - Normal
06/17/2026 04 PM PDT 8.83 1533 0 Normal
06/17/2026 05 PM PDT 8.85 1546 + Normal
06/17/2026 06 PM PDT 8.85 1546 0 Normal
06/17/2026 07 PM PDT 8.84 1540 - Normal
06/17/2026 08 PM PDT 8.85 1546 + Normal
06/17/2026 09 PM PDT 8.84 1540 - Normal
06/17/2026 10 PM PDT 8.85 1546 + Normal
06/17/2026 11 PM PDT 8.86 1553 + Normal
06/18/2026 12 AM PDT 8.86 1553 0 Normal
06/18/2026 01 AM PDT 8.89 1573 + Normal
06/18/2026 02 AM PDT 8.90 1579 + Normal
06/18/2026 03 AM PDT 8.91 1586 + Normal
06/18/2026 04 AM PDT 8.90 1579 - Normal
06/18/2026 05 AM PDT 8.91 1586 + Normal
06/18/2026 06 AM PDT 8.91 1586 0 Normal
06/18/2026 07 AM PDT 8.91 1586 0 Normal
06/18/2026 08 AM PDT 8.91 1586 0 Normal
06/18/2026 09 AM PDT 8.89 1573 - Normal
06/18/2026 10 AM PDT 8.91 1586 + Normal
06/18/2026 11 AM PDT 8.90 1579 - Normal
06/18/2026 12 PM PDT 8.93 1599 + Normal
06/18/2026 01 PM PDT 8.93 1599 0 Normal
06/18/2026 02 PM PDT 8.92 1592 - Normal
06/18/2026 03 PM PDT 8.92 1592 0 Normal
06/18/2026 04 PM PDT 8.90 1579 - Normal
06/18/2026 05 PM PDT 8.89 1573 - Normal
06/18/2026 06 PM PDT 8.89 1573 0 Normal
06/18/2026 07 PM PDT 8.88 1566 - Normal
06/18/2026 08 PM PDT 8.89 1573 + Normal
06/18/2026 09 PM PDT 8.89 1573 0 Normal
06/18/2026 10 PM PDT 8.89 1573 0 Normal
06/18/2026 11 PM PDT 8.91 1586 + Normal
06/19/2026 12 AM PDT 8.89 1573 - Normal
06/19/2026 01 AM PDT 8.91 1586 + Normal
06/19/2026 02 AM PDT 8.92 1592 + Normal
06/19/2026 03 AM PDT 8.92 1592 0 Normal
06/19/2026 04 AM PDT 8.95 1612 + Normal
06/19/2026 05 AM PDT 8.96 1619 + Normal
06/19/2026 06 AM PDT 8.98 1632 + Normal
06/19/2026 07 AM PDT 8.99 1639 + Normal
06/19/2026 08 AM PDT 8.99 1639 0 Normal
06/19/2026 09 AM PDT 9.00 1646 + Normal
06/19/2026 10 AM PDT 8.99 1639 - Normal
06/19/2026 11 AM PDT 8.99 1639 0 Normal
06/19/2026 12 PM PDT 8.98 1632 - Normal
06/19/2026 01 PM PDT 9.00 1646 + Normal
06/19/2026 02 PM PDT 8.99 1639 - Normal
06/19/2026 03 PM PDT 8.98 1632 - Normal
06/19/2026 04 PM PDT 8.98 1632 0 Normal
06/19/2026 05 PM PDT 8.98 1632 0 Normal
06/19/2026 06 PM PDT 8.97 1626 - Normal
06/19/2026 07 PM PDT 8.97 1626 0 Normal
06/19/2026 08 PM PDT 8.97 1626 0 Normal
06/19/2026 09 PM PDT 8.97 1626 0 Normal
06/19/2026 10 PM PDT 8.98 1632 + Normal
06/19/2026 11 PM PDT 8.98 1632 0 Normal
06/20/2026 12 AM PDT 8.98 1632 0 Normal
06/20/2026 01 AM PDT 8.99 1639 + Normal
06/20/2026 02 AM PDT 9.00 1646 + Normal
06/20/2026 03 AM PDT 9.00 1646 0 Normal
06/20/2026 04 AM PDT 9.01 1652 + Normal
06/20/2026 05 AM PDT 9.00 1646 - Normal
06/20/2026 06 AM PDT 8.99 1639 - Normal
06/20/2026 07 AM PDT 8.97 1626 - Normal
06/20/2026 08 AM PDT 8.95 1612 - Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
06/20/2026 09 AM PDT 8.92 1592 Normal
06/20/2026 10 AM PDT 8.89 1573 - Normal
06/20/2026 11 AM PDT 8.86 1553 - Normal
06/20/2026 12 PM PDT 8.83 1533 - Normal
06/20/2026 01 PM PDT 8.80 1514 - Normal
06/20/2026 02 PM PDT 8.77 1495 - Normal
06/20/2026 03 PM PDT 8.73 1469 - Normal
06/20/2026 04 PM PDT 8.70 1450 - Normal
06/20/2026 05 PM PDT 8.66 1425 - Normal
06/20/2026 06 PM PDT 8.63 1406 - Normal
06/20/2026 07 PM PDT 8.60 1387 - Normal
06/20/2026 08 PM PDT 8.56 1362 - Normal
06/20/2026 09 PM PDT 8.53 1344 - Normal
06/20/2026 10 PM PDT 8.50 1325 - Normal
06/20/2026 11 PM PDT 8.47 1307 - Normal
06/21/2026 12 AM PDT 8.44 1289 - Normal
06/21/2026 01 AM PDT 8.41 1271 - Normal
06/21/2026 02 AM PDT 8.38 1253 - Normal
06/21/2026 03 AM PDT 8.35 1235 - Normal
06/21/2026 04 AM PDT 8.33 1223 - Normal
06/21/2026 05 AM PDT 8.30 1205 - Normal
06/21/2026 06 AM PDT 8.28 1194 - Normal
06/21/2026 07 AM PDT 8.25 1176 - Normal
06/21/2026 08 AM PDT 8.23 1165 - Normal
06/21/2026 09 AM PDT 8.21 1153 - Normal
06/21/2026 10 AM PDT 8.19 1142 - Normal
06/21/2026 11 AM PDT 8.17 1130 - Normal
06/21/2026 12 PM PDT 8.15 1119 - Normal
06/21/2026 01 PM PDT 8.14 1113 - Normal
06/21/2026 02 PM PDT 8.12 1102 - Normal
06/21/2026 03 PM PDT 8.11 1096 - Normal
06/21/2026 04 PM PDT 8.09 1085 - Normal
06/21/2026 05 PM PDT 8.08 1079 - Normal
06/21/2026 06 PM PDT 8.06 1068 - Normal
06/21/2026 07 PM PDT 8.05 1062 - Normal
06/21/2026 08 PM PDT 8.04 1057 - Normal
06/21/2026 09 PM PDT 8.03 1051 - Normal
06/21/2026 10 PM PDT 8.02 1046 - Normal
06/21/2026 11 PM PDT 8.01 1040 - Normal
06/22/2026 12 AM PDT 8.00 1035 - Normal
06/22/2026 01 AM PDT 7.99 1029 - Normal
06/22/2026 02 AM PDT 7.98 1024 - Normal
06/22/2026 03 AM PDT 7.97 1018 - Normal
06/22/2026 04 AM PDT 7.97 1018 0 Normal
06/22/2026 05 AM PDT 7.96 1013 - Normal
06/22/2026 06 AM PDT 7.95 1007 - Normal
06/22/2026 07 AM PDT 7.95 1007 0 Normal
06/22/2026 08 AM PDT 7.94 1002 - Normal
06/22/2026 09 AM PDT 7.94 1002 0 Normal
06/22/2026 10 AM PDT 7.93 997 - Normal
06/22/2026 11 AM PDT 7.93 997 0 Normal
06/22/2026 12 PM PDT 7.92 991 - Normal
06/22/2026 01 PM PDT 7.92 991 0 Normal
06/22/2026 02 PM PDT 7.92 991 0 Normal
06/22/2026 03 PM PDT 7.92 991 0 Normal
06/22/2026 04 PM PDT 7.91 986 - Normal
06/22/2026 05 PM PDT 7.91 986 0 Normal
06/22/2026 06 PM PDT 7.91 986 0 Normal
06/22/2026 07 PM PDT 7.91 986 0 Normal
06/22/2026 08 PM PDT 7.90 980 - Normal
06/22/2026 09 PM PDT 7.90 980 0 Normal
06/22/2026 10 PM PDT 7.91 986 + Normal
06/22/2026 11 PM PDT 7.91 986 0 Normal
06/23/2026 12 AM PDT 7.91 986 0 Normal
06/23/2026 01 AM PDT 7.92 991 + Normal
06/23/2026 02 AM PDT 7.93 997 + Normal
06/23/2026 03 AM PDT 7.95 1007 + Normal
06/23/2026 04 AM PDT 7.97 1018 + Normal
06/23/2026 05 AM PDT 7.99 1029 + Normal
06/23/2026 06 AM PDT 8.02 1046 + Normal
06/23/2026 07 AM PDT 8.05 1062 + Normal
06/23/2026 08 AM PDT 8.09 1085 + Normal
06/23/2026 09 AM PDT 8.12 1102 + Normal
06/23/2026 10 AM PDT 8.16 1124 + Normal
06/23/2026 11 AM PDT 8.21 1153 + Normal
06/23/2026 12 PM PDT 8.25 1176 + Normal
06/23/2026 01 PM PDT 8.29 1200 + Normal
06/23/2026 02 PM PDT 8.34 1229 + Normal
06/23/2026 03 PM PDT 8.38 1253 + Normal
06/23/2026 04 PM PDT 8.43 1283 + Normal
06/23/2026 05 PM PDT 8.47 1307 + Normal
06/23/2026 06 PM PDT 8.51 1331 + Normal
06/23/2026 07 PM PDT 8.55 1356 + Normal
06/23/2026 08 PM PDT 8.60 1387 + Normal
06/23/2026 09 PM PDT 8.63 1406 + Normal
06/23/2026 10 PM PDT 8.67 1431 + Normal
06/23/2026 11 PM PDT 8.71 1456 + Normal
06/24/2026 12 AM PDT 8.74 1475 + Normal
06/24/2026 01 AM PDT 8.78 1501 + Normal
06/24/2026 02 AM PDT 8.81 1520 + Normal
06/24/2026 03 AM PDT 8.84 1540 + Normal
06/24/2026 04 AM PDT 8.87 1560 + Normal
06/24/2026 05 AM PDT 8.90 1579 + Normal
06/24/2026 06 AM PDT 8.93 1599 + Normal
06/24/2026 07 AM PDT 8.96 1619 + Normal
06/24/2026 08 AM PDT 8.98 1632 + Normal
06/24/2026 09 AM PDT 9.00 1646 + Normal
06/24/2026 10 AM PDT 9.03 1666 + Normal
06/24/2026 11 AM PDT 9.05 1679 + Normal
06/24/2026 12 PM PDT 9.07 1693 + Normal
06/24/2026 01 PM PDT 9.09 1706 + Normal
06/24/2026 02 PM PDT 9.10 1713 + Normal
06/24/2026 03 PM PDT 9.12 1727 + Normal
06/24/2026 04 PM PDT 9.14 1740 + Normal
06/24/2026 05 PM PDT 9.15 1747 + Normal
06/24/2026 06 PM PDT 9.17 1761 + Normal
06/24/2026 07 PM PDT 9.18 1768 + Normal
06/24/2026 08 PM PDT 9.19 1775 + Normal
06/24/2026 09 PM PDT 9.21 1789 + Normal
06/24/2026 10 PM PDT 9.22 1796 + Normal
06/24/2026 11 PM PDT 9.23 1803 + Normal
06/25/2026 12 AM PDT 9.24 1810 + Normal
06/25/2026 01 AM PDT 9.25 1817 + Normal
06/25/2026 02 AM PDT 9.26 1824 + Normal
06/25/2026 03 AM PDT 9.27 1831 + Normal
06/25/2026 04 AM PDT 9.28 1838 + Normal
06/25/2026 05 AM PDT 9.29 1845 + 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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