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: Oct 15 2026 at 7:25 AM PDTNext Issuance: Oct 16 2026 at 9:00 AM PDT
Action: 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:  10/15/2026 at 07:25 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  10/12/2026 at 09:00 PM PDT
# Maximum Observed Stage:                       8.49 Feet
# Maximum Observed Flow:                        1319 cfs
#
# Earliest Date & Time of Maximum Forecast:     10/18/2026 at 08:00 PM PDT
# Maximum Forecast Stage:                       9.86 Feet
# Maximum Forecast Flow:                        2264 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  10/10/2026 07 AM PDT            8.04           1057                        Normal
  10/10/2026 08 AM PDT            8.06           1068         +              Normal
  10/10/2026 09 AM PDT            8.07           1074         +              Normal
  10/10/2026 10 AM PDT            8.08           1079         +              Normal
  10/10/2026 11 AM PDT            8.09           1085         +              Normal
  10/10/2026 12 PM PDT            8.10           1090         +              Normal
  10/10/2026 01 PM PDT            8.10           1090         0              Normal
  10/10/2026 02 PM PDT            8.11           1096         +              Normal
  10/10/2026 03 PM PDT            8.10           1090         -              Normal
  10/10/2026 04 PM PDT            8.10           1090         0              Normal
  10/10/2026 05 PM PDT            8.09           1085         -              Normal
  10/10/2026 06 PM PDT            8.10           1090         +              Normal
  10/10/2026 07 PM PDT            8.10           1090         0              Normal
  10/10/2026 08 PM PDT            8.12           1102         +              Normal
  10/10/2026 09 PM PDT            8.15           1119         +              Normal
  10/10/2026 10 PM PDT            8.16           1124         +              Normal
  10/10/2026 11 PM PDT            8.17           1130         +              Normal
  10/11/2026 12 AM PDT            8.19           1142         +              Normal
  10/11/2026 01 AM PDT            8.20           1147         +              Normal
  10/11/2026 02 AM PDT            8.21           1153         +              Normal
  10/11/2026 03 AM PDT            8.22           1159         +              Normal
  10/11/2026 04 AM PDT            8.22           1159         0              Normal
  10/11/2026 05 AM PDT            8.23           1165         +              Normal
  10/11/2026 06 AM PDT            8.23           1165         0              Normal
  10/11/2026 07 AM PDT            8.23           1165         0              Normal
  10/11/2026 08 AM PDT            8.22           1159         -              Normal
  10/11/2026 09 AM PDT            8.21           1153         -              Normal
  10/11/2026 10 AM PDT            8.20           1147         -              Normal
  10/11/2026 11 AM PDT            8.20           1147         0              Normal
  10/11/2026 12 PM PDT            8.22           1159         +              Normal
  10/11/2026 01 PM PDT            8.22           1159         0              Normal
  10/11/2026 02 PM PDT            8.24           1170         +              Normal
  10/11/2026 03 PM PDT            8.27           1188         +              Normal
  10/11/2026 04 PM PDT            8.28           1194         +              Normal
  10/11/2026 05 PM PDT            8.29           1200         +              Normal
  10/11/2026 06 PM PDT            8.28           1194         -              Normal
  10/11/2026 07 PM PDT            8.30           1205         +              Normal
  10/11/2026 08 PM PDT            8.30           1205         0              Normal
  10/11/2026 09 PM PDT            8.30           1205         0              Normal
  10/11/2026 10 PM PDT            8.32           1217         +              Normal
  10/11/2026 11 PM PDT            8.33           1223         +              Normal
  10/12/2026 12 AM PDT            8.35           1235         +              Normal
  10/12/2026 01 AM PDT            8.37           1247         +              Normal
  10/12/2026 02 AM PDT            8.38           1253         +              Normal
  10/12/2026 03 AM PDT            8.40           1265         +              Normal
  10/12/2026 04 AM PDT            8.41           1271         +              Normal
  10/12/2026 05 AM PDT            8.42           1277         +              Normal
  10/12/2026 06 AM PDT            8.43           1283         +              Normal
  10/12/2026 07 AM PDT            8.43           1283         0              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            7.77            912         -              Normal
  10/15/2026 07 AM PDT            7.76            906         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  10/15/2026 08 AM PDT            7.75            901                        Normal
  10/15/2026 09 AM PDT            7.74            896         -              Normal
  10/15/2026 10 AM PDT            7.74            896         0              Normal
  10/15/2026 11 AM PDT            7.73            891         -              Normal
  10/15/2026 12 PM PDT            7.73            891         0              Normal
  10/15/2026 01 PM PDT            7.73            891         0              Normal
  10/15/2026 02 PM PDT            7.74            896         +              Normal
  10/15/2026 03 PM PDT            7.74            896         0              Normal
  10/15/2026 04 PM PDT            7.75            901         +              Normal
  10/15/2026 05 PM PDT            7.76            906         +              Normal
  10/15/2026 06 PM PDT            7.77            912         +              Normal
  10/15/2026 07 PM PDT            7.78            917         +              Normal
  10/15/2026 08 PM PDT            7.79            922         +              Normal
  10/15/2026 09 PM PDT            7.81            933         +              Normal
  10/15/2026 10 PM PDT            7.82            938         +              Normal
  10/15/2026 11 PM PDT            7.84            948         +              Normal
  10/16/2026 12 AM PDT            7.86            959         +              Normal
  10/16/2026 01 AM PDT            7.89            975         +              Normal
  10/16/2026 02 AM PDT            7.92            991         +              Normal
  10/16/2026 03 AM PDT            7.95           1007         +              Normal
  10/16/2026 04 AM PDT            7.99           1029         +              Normal
  10/16/2026 05 AM PDT            8.03           1051         +              Normal
  10/16/2026 06 AM PDT            8.08           1079         +              Normal
  10/16/2026 07 AM PDT            8.13           1107         +              Normal
  10/16/2026 08 AM PDT            8.17           1130         +              Normal
  10/16/2026 09 AM PDT            8.22           1159         +              Normal
  10/16/2026 10 AM PDT            8.27           1188         +              Normal
  10/16/2026 11 AM PDT            8.32           1217         +              Normal
  10/16/2026 12 PM PDT            8.37           1247         +              Normal
  10/16/2026 01 PM PDT            8.42           1277         +              Normal
  10/16/2026 02 PM PDT            8.47           1307         +              Normal
  10/16/2026 03 PM PDT            8.52           1338         +              Normal
  10/16/2026 04 PM PDT            8.56           1362         +              Normal
  10/16/2026 05 PM PDT            8.61           1393         +              Normal
  10/16/2026 06 PM PDT            8.65           1418         +              Normal
  10/16/2026 07 PM PDT            8.69           1444         +              Normal
  10/16/2026 08 PM PDT            8.73           1469         +              Normal
  10/16/2026 09 PM PDT            8.78           1501         +              Normal
  10/16/2026 10 PM PDT            8.82           1527         +              Normal
  10/16/2026 11 PM PDT            8.86           1553         +              Normal
  10/17/2026 12 AM PDT            8.90           1579         +              Normal
  10/17/2026 01 AM PDT            8.94           1606         +              Normal
  10/17/2026 02 AM PDT            8.98           1632         +              Normal
  10/17/2026 03 AM PDT            9.02           1659         +              Normal
  10/17/2026 04 AM PDT            9.05           1679         +              Normal
  10/17/2026 05 AM PDT            9.09           1706         +              Normal
  10/17/2026 06 AM PDT            9.13           1734         +              Normal
  10/17/2026 07 AM PDT            9.16           1754         +              Normal
  10/17/2026 08 AM PDT            9.19           1775         +              Normal
  10/17/2026 09 AM PDT            9.22           1796         +              Normal
  10/17/2026 10 AM PDT            9.25           1817         +              Normal
  10/17/2026 11 AM PDT            9.28           1838         +              Normal
  10/17/2026 12 PM PDT            9.30           1852         +              Normal
  10/17/2026 01 PM PDT            9.32           1866         +              Normal
  10/17/2026 02 PM PDT            9.35           1887         +              Normal
  10/17/2026 03 PM PDT            9.37           1901         +              Normal
  10/17/2026 04 PM PDT            9.39           1916         +              Normal
  10/17/2026 05 PM PDT            9.40           1923         +              Normal
  10/17/2026 06 PM PDT            9.42           1937         +              Normal
  10/17/2026 07 PM PDT            9.44           1951         +              Normal
  10/17/2026 08 PM PDT            9.46           1966         +              Normal
  10/17/2026 09 PM PDT            9.48           1980         +              Normal
  10/17/2026 10 PM PDT            9.50           1995         +              Normal
  10/17/2026 11 PM PDT            9.52           2009         +              Normal
  10/18/2026 12 AM PDT            9.54           2024         +              Normal
  10/18/2026 01 AM PDT            9.56           2039         +              Normal
  10/18/2026 02 AM PDT            9.58           2053         +              Normal
  10/18/2026 03 AM PDT            9.60           2068         +              Normal
  10/18/2026 04 AM PDT            9.62           2083         +              Normal
  10/18/2026 05 AM PDT            9.64           2098         +              Normal
  10/18/2026 06 AM PDT            9.66           2113         +              Normal
  10/18/2026 07 AM PDT            9.68           2128         +              Normal
  10/18/2026 08 AM PDT            9.70           2143         +              Normal
  10/18/2026 09 AM PDT            9.71           2150         +              Normal
  10/18/2026 10 AM PDT            9.73           2165         +              Normal
  10/18/2026 11 AM PDT            9.75           2180         +              Normal
  10/18/2026 12 PM PDT            9.76           2188         +              Normal
  10/18/2026 01 PM PDT            9.78           2203         +              Normal
  10/18/2026 02 PM PDT            9.79           2210         +              Normal
  10/18/2026 03 PM PDT            9.81           2226         +              Normal
  10/18/2026 04 PM PDT            9.82           2233         +              Normal
  10/18/2026 05 PM PDT            9.83           2241         +              Normal
  10/18/2026 06 PM PDT            9.84           2249         +              Normal
  10/18/2026 07 PM PDT            9.85           2256         +              Normal
  10/18/2026 08 PM PDT            9.86           2264         +              Normal
  10/18/2026 09 PM PDT            9.86           2264         0              Normal
  10/18/2026 10 PM PDT            9.86           2264         0              Normal
  10/18/2026 11 PM PDT            9.86           2264         0              Normal
  10/19/2026 12 AM PDT            9.86           2264         0              Normal
  10/19/2026 01 AM PDT            9.85           2256         -              Normal
  10/19/2026 02 AM PDT            9.85           2256         0              Normal
  10/19/2026 03 AM PDT            9.84           2249         -              Normal
  10/19/2026 04 AM PDT            9.82           2233         -              Normal
  10/19/2026 05 AM PDT            9.81           2226         -              Normal
  10/19/2026 06 AM PDT            9.79           2210         -              Normal
  10/19/2026 07 AM PDT            9.78           2203         -              Normal
  10/19/2026 08 AM PDT            9.76           2188         -              Normal
  10/19/2026 09 AM PDT            9.74           2173         -              Normal
  10/19/2026 10 AM PDT            9.72           2158         -              Normal
  10/19/2026 11 AM PDT            9.71           2150         -              Normal
  10/19/2026 12 PM PDT            9.69           2135         -              Normal
  10/19/2026 01 PM PDT            9.67           2120         -              Normal
  10/19/2026 02 PM PDT            9.65           2105         -              Normal
  10/19/2026 03 PM PDT            9.63           2090         -              Normal
  10/19/2026 04 PM PDT            9.62           2083         -              Normal
  10/19/2026 05 PM PDT            9.60           2068         -              Normal
  10/19/2026 06 PM PDT            9.58           2053         -              Normal
  10/19/2026 07 PM PDT            9.57           2046         -              Normal
  10/19/2026 08 PM PDT            9.55           2031         -              Normal
  10/19/2026 09 PM PDT            9.53           2017         -              Normal
  10/19/2026 10 PM PDT            9.51           2002         -              Normal
  10/19/2026 11 PM PDT            9.49           1988         -              Normal
  10/20/2026 12 AM PDT            9.47           1973         -              Normal
  10/20/2026 01 AM PDT            9.44           1951         -              Normal
  10/20/2026 02 AM PDT            9.41           1930         -              Normal
  10/20/2026 03 AM PDT            9.39           1916         -              Normal
  10/20/2026 04 AM PDT            9.36           1894         -              Normal
  10/20/2026 05 AM PDT            9.32           1866         -              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.