National Weather Service California-Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

 | 

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 06 2026 at 7:59 AM PDTNext Issuance: Jun 07 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:  06/06/2026 at 07:59 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  06/01/2026 at 09:00 AM PDT
# Maximum Observed Stage:                       9.72 Feet
# Maximum Observed Flow:                        2158 cfs
#
# Earliest Date & Time of Maximum Forecast:     06/06/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       9.41 Feet
# Maximum Forecast Flow:                        1930 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  06/01/2026 07 AM PDT            9.69           2135                        Normal
  06/01/2026 08 AM PDT            9.71           2150         +              Normal
  06/01/2026 09 AM PDT            9.72           2158         +              Normal
  06/01/2026 10 AM PDT            9.70           2143         -              Normal
  06/01/2026 11 AM PDT            9.68           2128         -              Normal
  06/01/2026 12 PM PDT            9.67           2120         -              Normal
  06/01/2026 01 PM PDT            9.66           2113         -              Normal
  06/01/2026 02 PM PDT            9.65           2105         -              Normal
  06/01/2026 03 PM PDT            9.64           2098         -              Normal
  06/01/2026 04 PM PDT            9.61           2076         -              Normal
  06/01/2026 05 PM PDT            9.58           2053         -              Normal
  06/01/2026 06 PM PDT            9.55           2031         -              Normal
  06/01/2026 07 PM PDT            9.51           2002         -              Normal
  06/01/2026 08 PM PDT            9.48           1980         -              Normal
  06/01/2026 09 PM PDT            9.47           1973         -              Normal
  06/01/2026 10 PM PDT            9.44           1951         -              Normal
  06/01/2026 11 PM PDT            9.42           1937         -              Normal
  06/02/2026 12 AM PDT            9.41           1930         -              Normal
  06/02/2026 01 AM PDT            9.39           1916         -              Normal
  06/02/2026 02 AM PDT            9.38           1908         -              Normal
  06/02/2026 03 AM PDT            9.38           1908         0              Normal
  06/02/2026 04 AM PDT            9.37           1901         -              Normal
  06/02/2026 05 AM PDT            9.37           1901         0              Normal
  06/02/2026 06 AM PDT            9.37           1901         0              Normal
  06/02/2026 07 AM PDT            9.36           1894         -              Normal
  06/02/2026 08 AM PDT            9.36           1894         0              Normal
  06/02/2026 09 AM PDT            9.33           1873         -              Normal
  06/02/2026 10 AM PDT            9.34           1880         +              Normal
  06/02/2026 11 AM PDT            9.35           1887         +              Normal
  06/02/2026 12 PM PDT            9.33           1873         -              Normal
  06/02/2026 01 PM PDT            9.33           1873         0              Normal
  06/02/2026 02 PM PDT            9.34           1880         +              Normal
  06/02/2026 03 PM PDT            9.34           1880         0              Normal
  06/02/2026 04 PM PDT            9.34           1880         0              Normal
  06/02/2026 05 PM PDT            9.34           1880         0              Normal
  06/02/2026 06 PM PDT            9.33           1873         -              Normal
  06/02/2026 07 PM PDT            9.36           1894         +              Normal
  06/02/2026 08 PM PDT            9.36           1894         0              Normal
  06/02/2026 09 PM PDT            9.37           1901         +              Normal
  06/02/2026 10 PM PDT            9.38           1908         +              Normal
  06/02/2026 11 PM PDT            9.38           1908         0              Normal
  06/03/2026 12 AM PDT            9.39           1916         +              Normal
  06/03/2026 01 AM PDT            9.39           1916         0              Normal
  06/03/2026 02 AM PDT            9.41           1930         +              Normal
  06/03/2026 03 AM PDT            9.43           1944         +              Normal
  06/03/2026 04 AM PDT            9.44           1951         +              Normal
  06/03/2026 05 AM PDT            9.45           1959         +              Normal
  06/03/2026 06 AM PDT            9.46           1966         +              Normal
  06/03/2026 07 AM PDT            9.47           1973         +              Normal
  06/03/2026 08 AM PDT            9.47           1973         0              Normal
  06/03/2026 09 AM PDT            9.48           1980         +              Normal
  06/03/2026 10 AM PDT            9.47           1973         -              Normal
  06/03/2026 11 AM PDT            9.46           1966         -              Normal
  06/03/2026 12 PM PDT            9.45           1959         -              Normal
  06/03/2026 01 PM PDT            9.45           1959         0              Normal
  06/03/2026 02 PM PDT            9.43           1944         -              Normal
  06/03/2026 03 PM PDT            9.43           1944         0              Normal
  06/03/2026 04 PM PDT            9.42           1937         -              Normal
  06/03/2026 05 PM PDT            9.43           1944         +              Normal
  06/03/2026 06 PM PDT            9.41           1930         -              Normal
  06/03/2026 07 PM PDT            9.43           1944         +              Normal
  06/03/2026 08 PM PDT            9.42           1937         -              Normal
  06/03/2026 09 PM PDT            9.41           1930         -              Normal
  06/03/2026 10 PM PDT            9.38           1908         -              Normal
  06/03/2026 11 PM PDT            9.39           1916         +              Normal
  06/04/2026 12 AM PDT            9.40           1923         +              Normal
  06/04/2026 01 AM PDT            9.40           1923         0              Normal
  06/04/2026 02 AM PDT            9.40           1923         0              Normal
  06/04/2026 03 AM PDT            9.41           1930         +              Normal
  06/04/2026 04 AM PDT            9.42           1937         +              Normal
  06/04/2026 05 AM PDT            9.42           1937         0              Normal
  06/04/2026 06 AM PDT            9.42           1937         0              Normal
  06/04/2026 07 AM PDT            9.42           1937         0              Normal
  06/04/2026 08 AM PDT            9.42           1937         0              Normal
  06/04/2026 09 AM PDT            9.41           1930         -              Normal
  06/04/2026 10 AM PDT            9.39           1916         -              Normal
  06/04/2026 11 AM PDT            9.39           1916         0              Normal
  06/04/2026 12 PM PDT            9.39           1916         0              Normal
  06/04/2026 01 PM PDT            9.38           1908         -              Normal
  06/04/2026 02 PM PDT            9.38           1908         0              Normal
  06/04/2026 03 PM PDT            9.36           1894         -              Normal
  06/04/2026 04 PM PDT            9.37           1901         +              Normal
  06/04/2026 05 PM PDT            9.36           1894         -              Normal
  06/04/2026 06 PM PDT            9.35           1887         -              Normal
  06/04/2026 07 PM PDT            9.36           1894         +              Normal
  06/04/2026 08 PM PDT            9.37           1901         +              Normal
  06/04/2026 09 PM PDT            9.36           1894         -              Normal
  06/04/2026 10 PM PDT            9.35           1887         -              Normal
  06/04/2026 11 PM PDT            9.34           1880         -              Normal
  06/05/2026 12 AM PDT            9.34           1880         0              Normal
  06/05/2026 01 AM PDT            9.34           1880         0              Normal
  06/05/2026 02 AM PDT            9.34           1880         0              Normal
  06/05/2026 03 AM PDT            9.33           1873         -              Normal
  06/05/2026 04 AM PDT            9.33           1873         0              Normal
  06/05/2026 05 AM PDT            9.33           1873         0              Normal
  06/05/2026 06 AM PDT            9.32           1866         -              Normal
  06/05/2026 07 AM PDT            9.32           1866         0              Normal
  06/05/2026 08 AM PDT            9.32           1866         0              Normal
  06/05/2026 09 AM PDT            9.32           1866         0              Normal
  06/05/2026 10 AM PDT            9.31           1859         -              Normal
  06/05/2026 11 AM PDT            9.31           1859         0              Normal
  06/05/2026 12 PM PDT            9.30           1852         -              Normal
  06/05/2026 01 PM PDT            9.30           1852         0              Normal
  06/05/2026 02 PM PDT            9.31           1859         +              Normal
  06/05/2026 03 PM PDT            9.31           1859         0              Normal
  06/05/2026 04 PM PDT            9.30           1852         -              Normal
  06/05/2026 05 PM PDT            9.31           1859         +              Normal
  06/05/2026 06 PM PDT            9.32           1866         +              Normal
  06/05/2026 07 PM PDT            9.34           1880         +              Normal
  06/05/2026 08 PM PDT            9.35           1887         +              Normal
  06/05/2026 09 PM PDT            9.36           1894         +              Normal
  06/05/2026 10 PM PDT            9.37           1901         +              Normal
  06/05/2026 11 PM PDT            9.38           1908         +              Normal
  06/06/2026 12 AM PDT            9.39           1916         +              Normal
  06/06/2026 01 AM PDT            9.40           1923         +              Normal
  06/06/2026 02 AM PDT            9.41           1930         +              Normal
  06/06/2026 03 AM PDT            9.42           1937         +              Normal
  06/06/2026 04 AM PDT            9.43           1944         +              Normal
  06/06/2026 05 AM PDT            9.44           1951         +              Normal
  06/06/2026 06 AM PDT            9.43           1944         -              Normal
  06/06/2026 07 AM PDT            9.42           1937         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  06/06/2026 08 AM PDT            9.41           1930                        Normal
  06/06/2026 09 AM PDT            9.40           1923         -              Normal
  06/06/2026 10 AM PDT            9.38           1908         -              Normal
  06/06/2026 11 AM PDT            9.37           1901         -              Normal
  06/06/2026 12 PM PDT            9.35           1887         -              Normal
  06/06/2026 01 PM PDT            9.33           1873         -              Normal
  06/06/2026 02 PM PDT            9.31           1859         -              Normal
  06/06/2026 03 PM PDT            9.29           1845         -              Normal
  06/06/2026 04 PM PDT            9.27           1831         -              Normal
  06/06/2026 05 PM PDT            9.25           1817         -              Normal
  06/06/2026 06 PM PDT            9.23           1803         -              Normal
  06/06/2026 07 PM PDT            9.21           1789         -              Normal
  06/06/2026 08 PM PDT            9.18           1768         -              Normal
  06/06/2026 09 PM PDT            9.16           1754         -              Normal
  06/06/2026 10 PM PDT            9.14           1740         -              Normal
  06/06/2026 11 PM PDT            9.11           1720         -              Normal
  06/07/2026 12 AM PDT            9.09           1706         -              Normal
  06/07/2026 01 AM PDT            9.07           1693         -              Normal
  06/07/2026 02 AM PDT            9.04           1672         -              Normal
  06/07/2026 03 AM PDT            9.02           1659         -              Normal
  06/07/2026 04 AM PDT            9.00           1646         -              Normal
  06/07/2026 05 AM PDT            8.97           1626         -              Normal
  06/07/2026 06 AM PDT            8.95           1612         -              Normal
  06/07/2026 07 AM PDT            8.93           1599         -              Normal
  06/07/2026 08 AM PDT            8.91           1586         -              Normal
  06/07/2026 09 AM PDT            8.89           1573         -              Normal
  06/07/2026 10 AM PDT            8.87           1560         -              Normal
  06/07/2026 11 AM PDT            8.85           1546         -              Normal
  06/07/2026 12 PM PDT            8.83           1533         -              Normal
  06/07/2026 01 PM PDT            8.81           1520         -              Normal
  06/07/2026 02 PM PDT            8.80           1514         -              Normal
  06/07/2026 03 PM PDT            8.78           1501         -              Normal
  06/07/2026 04 PM PDT            8.77           1495         -              Normal
  06/07/2026 05 PM PDT            8.75           1482         -              Normal
  06/07/2026 06 PM PDT            8.73           1469         -              Normal
  06/07/2026 07 PM PDT            8.72           1463         -              Normal
  06/07/2026 08 PM PDT            8.71           1456         -              Normal
  06/07/2026 09 PM PDT            8.69           1444         -              Normal
  06/07/2026 10 PM PDT            8.68           1437         -              Normal
  06/07/2026 11 PM PDT            8.67           1431         -              Normal
  06/08/2026 12 AM PDT            8.65           1418         -              Normal
  06/08/2026 01 AM PDT            8.64           1412         -              Normal
  06/08/2026 02 AM PDT            8.63           1406         -              Normal
  06/08/2026 03 AM PDT            8.62           1400         -              Normal
  06/08/2026 04 AM PDT            8.61           1393         -              Normal
  06/08/2026 05 AM PDT            8.60           1387         -              Normal
  06/08/2026 06 AM PDT            8.60           1387         0              Normal
  06/08/2026 07 AM PDT            8.59           1381         -              Normal
  06/08/2026 08 AM PDT            8.58           1375         -              Normal
  06/08/2026 09 AM PDT            8.57           1368         -              Normal
  06/08/2026 10 AM PDT            8.56           1362         -              Normal
  06/08/2026 11 AM PDT            8.56           1362         0              Normal
  06/08/2026 12 PM PDT            8.55           1356         -              Normal
  06/08/2026 01 PM PDT            8.54           1350         -              Normal
  06/08/2026 02 PM PDT            8.54           1350         0              Normal
  06/08/2026 03 PM PDT            8.53           1344         -              Normal
  06/08/2026 04 PM PDT            8.53           1344         0              Normal
  06/08/2026 05 PM PDT            8.52           1338         -              Normal
  06/08/2026 06 PM PDT            8.52           1338         0              Normal
  06/08/2026 07 PM PDT            8.51           1331         -              Normal
  06/08/2026 08 PM PDT            8.51           1331         0              Normal
  06/08/2026 09 PM PDT            8.50           1325         -              Normal
  06/08/2026 10 PM PDT            8.50           1325         0              Normal
  06/08/2026 11 PM PDT            8.49           1319         -              Normal
  06/09/2026 12 AM PDT            8.49           1319         0              Normal
  06/09/2026 01 AM PDT            8.49           1319         0              Normal
  06/09/2026 02 AM PDT            8.48           1313         -              Normal
  06/09/2026 03 AM PDT            8.48           1313         0              Normal
  06/09/2026 04 AM PDT            8.48           1313         0              Normal
  06/09/2026 05 AM PDT            8.48           1313         0              Normal
  06/09/2026 06 AM PDT            8.48           1313         0              Normal
  06/09/2026 07 AM PDT            8.48           1313         0              Normal
  06/09/2026 08 AM PDT            8.49           1319         +              Normal
  06/09/2026 09 AM PDT            8.50           1325         +              Normal
  06/09/2026 10 AM PDT            8.51           1331         +              Normal
  06/09/2026 11 AM PDT            8.53           1344         +              Normal
  06/09/2026 12 PM PDT            8.54           1350         +              Normal
  06/09/2026 01 PM PDT            8.56           1362         +              Normal
  06/09/2026 02 PM PDT            8.59           1381         +              Normal
  06/09/2026 03 PM PDT            8.61           1393         +              Normal
  06/09/2026 04 PM PDT            8.63           1406         +              Normal
  06/09/2026 05 PM PDT            8.65           1418         +              Normal
  06/09/2026 06 PM PDT            8.68           1437         +              Normal
  06/09/2026 07 PM PDT            8.70           1450         +              Normal
  06/09/2026 08 PM PDT            8.73           1469         +              Normal
  06/09/2026 09 PM PDT            8.75           1482         +              Normal
  06/09/2026 10 PM PDT            8.78           1501         +              Normal
  06/09/2026 11 PM PDT            8.80           1514         +              Normal
  06/10/2026 12 AM PDT            8.83           1533         +              Normal
  06/10/2026 01 AM PDT            8.85           1546         +              Normal
  06/10/2026 02 AM PDT            8.88           1566         +              Normal
  06/10/2026 03 AM PDT            8.90           1579         +              Normal
  06/10/2026 04 AM PDT            8.92           1592         +              Normal
  06/10/2026 05 AM PDT            8.94           1606         +              Normal
  06/10/2026 06 AM PDT            8.96           1619         +              Normal
  06/10/2026 07 AM PDT            8.98           1632         +              Normal
  06/10/2026 08 AM PDT            9.00           1646         +              Normal
  06/10/2026 09 AM PDT            9.02           1659         +              Normal
  06/10/2026 10 AM PDT            9.04           1672         +              Normal
  06/10/2026 11 AM PDT            9.05           1679         +              Normal
  06/10/2026 12 PM PDT            9.07           1693         +              Normal
  06/10/2026 01 PM PDT            9.09           1706         +              Normal
  06/10/2026 02 PM PDT            9.10           1713         +              Normal
  06/10/2026 03 PM PDT            9.12           1727         +              Normal
  06/10/2026 04 PM PDT            9.13           1734         +              Normal
  06/10/2026 05 PM PDT            9.14           1740         +              Normal
  06/10/2026 06 PM PDT            9.16           1754         +              Normal
  06/10/2026 07 PM PDT            9.17           1761         +              Normal
  06/10/2026 08 PM PDT            9.18           1768         +              Normal
  06/10/2026 09 PM PDT            9.19           1775         +              Normal
  06/10/2026 10 PM PDT            9.20           1782         +              Normal
  06/10/2026 11 PM PDT            9.21           1789         +              Normal
  06/11/2026 12 AM PDT            9.22           1796         +              Normal
  06/11/2026 01 AM PDT            9.23           1803         +              Normal
  06/11/2026 02 AM PDT            9.24           1810         +              Normal
  06/11/2026 03 AM PDT            9.25           1817         +              Normal
  06/11/2026 04 AM PDT            9.26           1824         +              Normal
  06/11/2026 05 AM PDT            9.26           1824         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.