SAN JOAQUIN RIVER - VERNALIS (VNSC1)
Latitude: 37.68º NLongitude: 121.27º WElevation: 35 FeetForecast Type: Official Location
Location: San Joaquin County in CaliforniaBulletin Group: San JoaquinRiver Group: San Joaquin
Issuance Time: Jun 17 2026 at 7:50 AM PDTNext Issuance: Jun 18 2026 at 9:00 AM PDT
Action/Monitor: 24.5 FeetMinor Flood: 29.0 FeetModerate Flood: 32.0 FeetMajor Flood: 37.3 Feet

# Tabular Observed and Forecast Hydrograph Information
#
# Location: San Joaquin River - Vernalis (VNSC1)
#
# File Generation Time:  06/17/2026 at 07:50 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  06/12/2026 at 07:00 AM PDT
# Maximum Observed Stage:                       9.15 Feet
# Maximum Observed Flow:                        1747 cfs
#
# Earliest Date & Time of Maximum Forecast:     06/19/2026 at 02:00 PM PDT
# Maximum Forecast Stage:                       9.20 Feet
# Maximum Forecast Flow:                        1782 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  06/12/2026 07 AM PDT            9.15           1747                        Normal
  06/12/2026 08 AM PDT            9.14           1740         -              Normal
  06/12/2026 09 AM PDT            9.14           1740         0              Normal
  06/12/2026 10 AM PDT            9.13           1734         -              Normal
  06/12/2026 11 AM PDT            9.10           1713         -              Normal
  06/12/2026 12 PM PDT            9.10           1713         0              Normal
  06/12/2026 01 PM PDT            9.10           1713         0              Normal
  06/12/2026 02 PM PDT            9.10           1713         0              Normal
  06/12/2026 03 PM PDT            9.08           1700         -              Normal
  06/12/2026 04 PM PDT            9.09           1706         +              Normal
  06/12/2026 05 PM PDT            9.08           1700         -              Normal
  06/12/2026 06 PM PDT            9.08           1700         0              Normal
  06/12/2026 07 PM PDT            9.11           1720         +              Normal
  06/12/2026 08 PM PDT            9.11           1720         0              Normal
  06/12/2026 09 PM PDT            9.11           1720         0              Normal
  06/12/2026 10 PM PDT            9.11           1720         0              Normal
  06/12/2026 11 PM PDT            9.11           1720         0              Normal
  06/13/2026 12 AM PDT            9.12           1727         +              Normal
  06/13/2026 01 AM PDT            9.12           1727         0              Normal
  06/13/2026 02 AM PDT            9.12           1727         0              Normal
  06/13/2026 03 AM PDT            9.13           1734         +              Normal
  06/13/2026 04 AM PDT            9.12           1727         -              Normal
  06/13/2026 05 AM PDT            9.12           1727         0              Normal
  06/13/2026 06 AM PDT            9.13           1734         +              Normal
  06/13/2026 07 AM PDT            9.13           1734         0              Normal
  06/13/2026 08 AM PDT            9.13           1734         0              Normal
  06/13/2026 09 AM PDT            9.13           1734         0              Normal
  06/13/2026 10 AM PDT            9.12           1727         -              Normal
  06/13/2026 11 AM PDT            9.12           1727         0              Normal
  06/13/2026 12 PM PDT            9.10           1713         -              Normal
  06/13/2026 01 PM PDT            9.10           1713         0              Normal
  06/13/2026 02 PM PDT            9.10           1713         0              Normal
  06/13/2026 03 PM PDT            9.09           1706         -              Normal
  06/13/2026 04 PM PDT            9.08           1700         -              Normal
  06/13/2026 05 PM PDT            9.06           1686         -              Normal
  06/13/2026 06 PM PDT            9.03           1666         -              Normal
  06/13/2026 07 PM PDT            9.03           1666         0              Normal
  06/13/2026 08 PM PDT            9.02           1659         -              Normal
  06/13/2026 09 PM PDT            9.00           1646         -              Normal
  06/13/2026 10 PM PDT            8.98           1632         -              Normal
  06/13/2026 11 PM PDT            8.97           1626         -              Normal
  06/14/2026 12 AM PDT            8.94           1606         -              Normal
  06/14/2026 01 AM PDT            8.92           1592         -              Normal
  06/14/2026 02 AM PDT            8.90           1579         -              Normal
  06/14/2026 03 AM PDT            8.88           1566         -              Normal
  06/14/2026 04 AM PDT            8.85           1546         -              Normal
  06/14/2026 05 AM PDT            8.82           1527         -              Normal
  06/14/2026 06 AM PDT            8.79           1508         -              Normal
  06/14/2026 07 AM PDT            8.73           1469         -              Normal
  06/14/2026 08 AM PDT            8.72           1463         -              Normal
  06/14/2026 09 AM PDT            8.70           1450         -              Normal
  06/14/2026 10 AM PDT            8.67           1431         -              Normal
  06/14/2026 11 AM PDT            8.65           1418         -              Normal
  06/14/2026 12 PM PDT            8.64           1412         -              Normal
  06/14/2026 01 PM PDT            8.60           1387         -              Normal
  06/14/2026 02 PM PDT            8.58           1375         -              Normal
  06/14/2026 03 PM PDT            8.55           1356         -              Normal
  06/14/2026 04 PM PDT            8.52           1338         -              Normal
  06/14/2026 05 PM PDT            8.49           1319         -              Normal
  06/14/2026 06 PM PDT            8.47           1307         -              Normal
  06/14/2026 07 PM PDT            8.45           1295         -              Normal
  06/14/2026 08 PM PDT            8.43           1283         -              Normal
  06/14/2026 09 PM PDT            8.42           1277         -              Normal
  06/14/2026 10 PM PDT            8.42           1277         0              Normal
  06/14/2026 11 PM PDT            8.45           1295         +              Normal
  06/15/2026 12 AM PDT            8.44           1289         -              Normal
  06/15/2026 01 AM PDT            8.44           1289         0              Normal
  06/15/2026 02 AM PDT            8.43           1283         -              Normal
  06/15/2026 03 AM PDT            8.43           1283         0              Normal
  06/15/2026 04 AM PDT            8.43           1283         0              Normal
  06/15/2026 05 AM PDT            8.43           1283         0              Normal
  06/15/2026 06 AM PDT            8.43           1283         0              Normal
  06/15/2026 07 AM PDT            8.42           1277         -              Normal
  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            8.72           1463         +              Normal
  06/17/2026 07 AM PDT            8.74           1475         +              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  06/17/2026 08 AM PDT            8.77           1495                        Normal
  06/17/2026 09 AM PDT            8.79           1508         +              Normal
  06/17/2026 10 AM PDT            8.81           1520         +              Normal
  06/17/2026 11 AM PDT            8.83           1533         +              Normal
  06/17/2026 12 PM PDT            8.85           1546         +              Normal
  06/17/2026 01 PM PDT            8.87           1560         +              Normal
  06/17/2026 02 PM PDT            8.88           1566         +              Normal
  06/17/2026 03 PM PDT            8.90           1579         +              Normal
  06/17/2026 04 PM PDT            8.91           1586         +              Normal
  06/17/2026 05 PM PDT            8.93           1599         +              Normal
  06/17/2026 06 PM PDT            8.94           1606         +              Normal
  06/17/2026 07 PM PDT            8.96           1619         +              Normal
  06/17/2026 08 PM PDT            8.97           1626         +              Normal
  06/17/2026 09 PM PDT            8.98           1632         +              Normal
  06/17/2026 10 PM PDT            8.99           1639         +              Normal
  06/17/2026 11 PM PDT            9.00           1646         +              Normal
  06/18/2026 12 AM PDT            9.01           1652         +              Normal
  06/18/2026 01 AM PDT            9.02           1659         +              Normal
  06/18/2026 02 AM PDT            9.03           1666         +              Normal
  06/18/2026 03 AM PDT            9.04           1672         +              Normal
  06/18/2026 04 AM PDT            9.05           1679         +              Normal
  06/18/2026 05 AM PDT            9.06           1686         +              Normal
  06/18/2026 06 AM PDT            9.07           1693         +              Normal
  06/18/2026 07 AM PDT            9.08           1700         +              Normal
  06/18/2026 08 AM PDT            9.08           1700         0              Normal
  06/18/2026 09 AM PDT            9.09           1706         +              Normal
  06/18/2026 10 AM PDT            9.10           1713         +              Normal
  06/18/2026 11 AM PDT            9.10           1713         0              Normal
  06/18/2026 12 PM PDT            9.11           1720         +              Normal
  06/18/2026 01 PM PDT            9.11           1720         0              Normal
  06/18/2026 02 PM PDT            9.12           1727         +              Normal
  06/18/2026 03 PM PDT            9.12           1727         0              Normal
  06/18/2026 04 PM PDT            9.13           1734         +              Normal
  06/18/2026 05 PM PDT            9.13           1734         0              Normal
  06/18/2026 06 PM PDT            9.14           1740         +              Normal
  06/18/2026 07 PM PDT            9.14           1740         0              Normal
  06/18/2026 08 PM PDT            9.15           1747         +              Normal
  06/18/2026 09 PM PDT            9.15           1747         0              Normal
  06/18/2026 10 PM PDT            9.15           1747         0              Normal
  06/18/2026 11 PM PDT            9.16           1754         +              Normal
  06/19/2026 12 AM PDT            9.16           1754         0              Normal
  06/19/2026 01 AM PDT            9.16           1754         0              Normal
  06/19/2026 02 AM PDT            9.17           1761         +              Normal
  06/19/2026 03 AM PDT            9.17           1761         0              Normal
  06/19/2026 04 AM PDT            9.17           1761         0              Normal
  06/19/2026 05 AM PDT            9.18           1768         +              Normal
  06/19/2026 06 AM PDT            9.18           1768         0              Normal
  06/19/2026 07 AM PDT            9.18           1768         0              Normal
  06/19/2026 08 AM PDT            9.18           1768         0              Normal
  06/19/2026 09 AM PDT            9.19           1775         +              Normal
  06/19/2026 10 AM PDT            9.19           1775         0              Normal
  06/19/2026 11 AM PDT            9.19           1775         0              Normal
  06/19/2026 12 PM PDT            9.19           1775         0              Normal
  06/19/2026 01 PM PDT            9.19           1775         0              Normal
  06/19/2026 02 PM PDT            9.20           1782         +              Normal
  06/19/2026 03 PM PDT            9.20           1782         0              Normal
  06/19/2026 04 PM PDT            9.20           1782         0              Normal
  06/19/2026 05 PM PDT            9.20           1782         0              Normal
  06/19/2026 06 PM PDT            9.20           1782         0              Normal
  06/19/2026 07 PM PDT            9.19           1775         -              Normal
  06/19/2026 08 PM PDT            9.19           1775         0              Normal
  06/19/2026 09 PM PDT            9.19           1775         0              Normal
  06/19/2026 10 PM PDT            9.18           1768         -              Normal
  06/19/2026 11 PM PDT            9.17           1761         -              Normal
  06/20/2026 12 AM PDT            9.16           1754         -              Normal
  06/20/2026 01 AM PDT            9.15           1747         -              Normal
  06/20/2026 02 AM PDT            9.13           1734         -              Normal
  06/20/2026 03 AM PDT            9.12           1727         -              Normal
  06/20/2026 04 AM PDT            9.10           1713         -              Normal
  06/20/2026 05 AM PDT            9.08           1700         -              Normal
  06/20/2026 06 AM PDT            9.06           1686         -              Normal
  06/20/2026 07 AM PDT            9.04           1672         -              Normal
  06/20/2026 08 AM PDT            9.01           1652         -              Normal
  06/20/2026 09 AM PDT            8.98           1632         -              Normal
  06/20/2026 10 AM PDT            8.95           1612         -              Normal
  06/20/2026 11 AM PDT            8.92           1592         -              Normal
  06/20/2026 12 PM PDT            8.89           1573         -              Normal
  06/20/2026 01 PM PDT            8.85           1546         -              Normal
  06/20/2026 02 PM PDT            8.81           1520         -              Normal
  06/20/2026 03 PM PDT            8.78           1501         -              Normal
  06/20/2026 04 PM PDT            8.74           1475         -              Normal
  06/20/2026 05 PM PDT            8.70           1450         -              Normal
  06/20/2026 06 PM PDT            8.67           1431         -              Normal
  06/20/2026 07 PM PDT            8.63           1406         -              Normal
  06/20/2026 08 PM PDT            8.59           1381         -              Normal
  06/20/2026 09 PM PDT            8.56           1362         -              Normal
  06/20/2026 10 PM PDT            8.52           1338         -              Normal
  06/20/2026 11 PM PDT            8.48           1313         -              Normal
  06/21/2026 12 AM PDT            8.45           1295         -              Normal
  06/21/2026 01 AM PDT            8.42           1277         -              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            8.32           1217         -              Normal
  06/21/2026 05 AM PDT            8.29           1200         -              Normal
  06/21/2026 06 AM PDT            8.26           1182         -              Normal
  06/21/2026 07 AM PDT            8.24           1170         -              Normal
  06/21/2026 08 AM PDT            8.21           1153         -              Normal
  06/21/2026 09 AM PDT            8.19           1142         -              Normal
  06/21/2026 10 AM PDT            8.16           1124         -              Normal
  06/21/2026 11 AM PDT            8.14           1113         -              Normal
  06/21/2026 12 PM PDT            8.12           1102         -              Normal
  06/21/2026 01 PM PDT            8.09           1085         -              Normal
  06/21/2026 02 PM PDT            8.07           1074         -              Normal
  06/21/2026 03 PM PDT            8.05           1062         -              Normal
  06/21/2026 04 PM PDT            8.04           1057         -              Normal
  06/21/2026 05 PM PDT            8.02           1046         -              Normal
  06/21/2026 06 PM PDT            8.00           1035         -              Normal
  06/21/2026 07 PM PDT            7.99           1029         -              Normal
  06/21/2026 08 PM PDT            7.97           1018         -              Normal
  06/21/2026 09 PM PDT            7.96           1013         -              Normal
  06/21/2026 10 PM PDT            7.94           1002         -              Normal
  06/21/2026 11 PM PDT            7.93            997         -              Normal
  06/22/2026 12 AM PDT            7.92            991         -              Normal
  06/22/2026 01 AM PDT            7.90            980         -              Normal
  06/22/2026 02 AM PDT            7.89            975         -              Normal
  06/22/2026 03 AM PDT            7.88            970         -              Normal
  06/22/2026 04 AM PDT            7.87            964         -              Normal
  06/22/2026 05 AM PDT            7.86            959         -              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.