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

*** IMPORTANT ***  Week of June 16 - Website Data Outage - Due to a major computer upgrade the week of June 16, nearly all data on the CNRFC web site will not be updated. We anticipate the down time to be approximately 4 days. The latest deterministic hydrologic forecasts for official forecast points will continue to be available at the National Water Prediction Service during this time.
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SAN JOAQUIN RIVER - VERNALIS (VNSC1)
Latitude: 37.68º NLongitude: 121.27º WElevation: 35 Feet
Location: San Joaquin County in CaliforniaBulletin Group: San JoaquinRiver Group: San Joaquin
Issuance Time: Jun 16 2025 at 6:03 AM PDTNext Issuance: Jun 17 2025 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:  06/16/2025 at 06:03 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  06/11/2025 at 11:00 AM PDT
# Maximum Observed Stage:                       9.48 Feet
# Maximum Observed Flow:                        1930 cfs
#
# Earliest Date & Time of Maximum Forecast:     06/21/2025 at 04:00 AM PDT
# Maximum Forecast Stage:                       9.51 Feet
# Maximum Forecast Flow:                        1951 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  06/11/2025 06 AM PDT            9.46           1916                        Normal
  06/11/2025 07 AM PDT            9.47           1923         +              Normal
  06/11/2025 08 AM PDT            9.48           1930         +              Normal
  06/11/2025 09 AM PDT            9.47           1923         -              Normal
  06/11/2025 10 AM PDT            9.48           1930         +              Normal
  06/11/2025 11 AM PDT            9.48           1930         0              Normal
  06/11/2025 12 PM PDT            9.47           1923         -              Normal
  06/11/2025 01 PM PDT            9.47           1923         0              Normal
  06/11/2025 02 PM PDT            9.45           1908         -              Normal
  06/11/2025 03 PM PDT            9.44           1901         -              Normal
  06/11/2025 04 PM PDT            9.43           1894         -              Normal
  06/11/2025 05 PM PDT            9.41           1880         -              Normal
  06/11/2025 06 PM PDT            9.39           1866         -              Normal
  06/11/2025 07 PM PDT            9.37           1852         -              Normal
  06/11/2025 08 PM PDT            9.36           1845         -              Normal
  06/11/2025 09 PM PDT            9.35           1838         -              Normal
  06/11/2025 10 PM PDT            9.34           1831         -              Normal
  06/11/2025 11 PM PDT            9.33           1824         -              Normal
  06/12/2025 12 AM PDT            9.33           1824         0              Normal
  06/12/2025 01 AM PDT            9.32           1817         -              Normal
  06/12/2025 02 AM PDT            9.32           1817         0              Normal
  06/12/2025 03 AM PDT            9.31           1810         -              Normal
  06/12/2025 04 AM PDT            9.31           1810         0              Normal
  06/12/2025 05 AM PDT            9.31           1810         0              Normal
  06/12/2025 06 AM PDT            9.30           1803         -              Normal
  06/12/2025 07 AM PDT            9.30           1803         0              Normal
  06/12/2025 08 AM PDT            9.30           1803         0              Normal
  06/12/2025 09 AM PDT            9.29           1796         -              Normal
  06/12/2025 10 AM PDT            9.30           1803         +              Normal
  06/12/2025 11 AM PDT            9.29           1796         -              Normal
  06/12/2025 12 PM PDT            9.28           1789         -              Normal
  06/12/2025 01 PM PDT            9.27           1782         -              Normal
  06/12/2025 02 PM PDT            9.26           1775         -              Normal
  06/12/2025 03 PM PDT            9.24           1761         -              Normal
  06/12/2025 04 PM PDT            9.23           1754         -              Normal
  06/12/2025 05 PM PDT            9.22           1747         -              Normal
  06/12/2025 06 PM PDT            9.21           1740         -              Normal
  06/12/2025 07 PM PDT            9.20           1734         -              Normal
  06/12/2025 08 PM PDT            9.20           1734         0              Normal
  06/12/2025 09 PM PDT            9.21           1740         +              Normal
  06/12/2025 10 PM PDT            9.21           1740         0              Normal
  06/12/2025 11 PM PDT            9.22           1747         +              Normal
  06/13/2025 12 AM PDT            9.22           1747         0              Normal
  06/13/2025 01 AM PDT            9.23           1754         +              Normal
  06/13/2025 02 AM PDT            9.25           1768         +              Normal
  06/13/2025 03 AM PDT            9.25           1768         0              Normal
  06/13/2025 04 AM PDT            9.25           1768         0              Normal
  06/13/2025 05 AM PDT            9.25           1768         0              Normal
  06/13/2025 06 AM PDT            9.25           1768         0              Normal
  06/13/2025 07 AM PDT            9.25           1768         0              Normal
  06/13/2025 08 AM PDT            9.24           1761         -              Normal
  06/13/2025 09 AM PDT            9.23           1754         -              Normal
  06/13/2025 10 AM PDT            9.22           1747         -              Normal
  06/13/2025 11 AM PDT            9.22           1747         0              Normal
  06/13/2025 12 PM PDT            9.20           1734         -              Normal
  06/13/2025 01 PM PDT            9.18           1720         -              Normal
  06/13/2025 02 PM PDT            9.14           1693         -              Normal
  06/13/2025 03 PM PDT            9.12           1679         -              Normal
  06/13/2025 04 PM PDT            9.10           1666         -              Normal
  06/13/2025 05 PM PDT            9.09           1659         -              Normal
  06/13/2025 06 PM PDT            9.08           1652         -              Normal
  06/13/2025 07 PM PDT            9.07           1646         -              Normal
  06/13/2025 08 PM PDT            9.05           1632         -              Normal
  06/13/2025 09 PM PDT            9.04           1626         -              Normal
  06/13/2025 10 PM PDT            9.03           1619         -              Normal
  06/13/2025 11 PM PDT            9.03           1619         0              Normal
  06/14/2025 12 AM PDT            9.02           1612         -              Normal
  06/14/2025 01 AM PDT            9.03           1619         +              Normal
  06/14/2025 02 AM PDT            9.03           1619         0              Normal
  06/14/2025 03 AM PDT            9.03           1619         0              Normal
  06/14/2025 04 AM PDT            9.03           1619         0              Normal
  06/14/2025 05 AM PDT            9.04           1626         +              Normal
  06/14/2025 06 AM PDT            9.04           1626         0              Normal
  06/14/2025 07 AM PDT            9.04           1626         0              Normal
  06/14/2025 08 AM PDT            9.04           1626         0              Normal
  06/14/2025 09 AM PDT            9.04           1626         0              Normal
  06/14/2025 10 AM PDT            9.03           1619         -              Normal
  06/14/2025 11 AM PDT            9.02           1612         -              Normal
  06/14/2025 12 PM PDT            9.01           1606         -              Normal
  06/14/2025 01 PM PDT            8.98           1586         -              Normal
  06/14/2025 02 PM PDT            8.96           1573         -              Normal
  06/14/2025 03 PM PDT            8.94           1560         -              Normal
  06/14/2025 04 PM PDT            8.92           1546         -              Normal
  06/14/2025 05 PM PDT            8.89           1527         -              Normal
  06/14/2025 06 PM PDT            8.87           1514         -              Normal
  06/14/2025 07 PM PDT            8.86           1508         -              Normal
  06/14/2025 08 PM PDT            8.84           1495         -              Normal
  06/14/2025 09 PM PDT            8.82           1482         -              Normal
  06/14/2025 10 PM PDT            8.81           1475         -              Normal
  06/14/2025 11 PM PDT            8.80           1469         -              Normal
  06/15/2025 12 AM PDT            8.79           1463         -              Normal
  06/15/2025 01 AM PDT            8.78           1456         -              Normal
  06/15/2025 02 AM PDT            8.77           1450         -              Normal
  06/15/2025 03 AM PDT            8.76           1444         -              Normal
  06/15/2025 04 AM PDT            8.76           1444         0              Normal
  06/15/2025 05 AM PDT            8.75           1437         -              Normal
  06/15/2025 06 AM PDT            8.74           1431         -              Normal
  06/15/2025 07 AM PDT            8.73           1425         -              Normal
  06/15/2025 08 AM PDT            8.72           1418         -              Normal
  06/15/2025 09 AM PDT            8.71           1412         -              Normal
  06/15/2025 10 AM PDT            8.70           1406         -              Normal
  06/15/2025 11 AM PDT            8.69           1400         -              Normal
  06/15/2025 12 PM PDT            8.67           1387         -              Normal
  06/15/2025 01 PM PDT            8.67           1387         0              Normal
  06/15/2025 02 PM PDT            8.66           1381         -              Normal
  06/15/2025 03 PM PDT            8.65           1375         -              Normal
  06/15/2025 04 PM PDT            8.65           1375         0              Normal
  06/15/2025 05 PM PDT            8.64           1368         -              Normal
  06/15/2025 06 PM PDT            8.64           1368         0              Normal
  06/15/2025 07 PM PDT            8.64           1368         0              Normal
  06/15/2025 08 PM PDT            8.63           1362         -              Normal
  06/15/2025 09 PM PDT            8.63           1362         0              Normal
  06/15/2025 10 PM PDT            8.62           1356         -              Normal
  06/15/2025 11 PM PDT            8.63           1362         +              Normal
  06/16/2025 12 AM PDT            8.63           1362         0              Normal
  06/16/2025 01 AM PDT            8.63           1362         0              Normal
  06/16/2025 02 AM PDT            8.63           1362         0              Normal
  06/16/2025 03 AM PDT            8.63           1362         0              Normal
  06/16/2025 04 AM PDT            8.63           1362         0              Normal
  06/16/2025 05 AM PDT            8.62           1356         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  06/16/2025 06 AM PDT            8.61           1350                        Normal
  06/16/2025 07 AM PDT            8.60           1344         -              Normal
  06/16/2025 08 AM PDT            8.59           1338         -              Normal
  06/16/2025 09 AM PDT            8.58           1331         -              Normal
  06/16/2025 10 AM PDT            8.57           1325         -              Normal
  06/16/2025 11 AM PDT            8.56           1319         -              Normal
  06/16/2025 12 PM PDT            8.56           1319         0              Normal
  06/16/2025 01 PM PDT            8.55           1313         -              Normal
  06/16/2025 02 PM PDT            8.54           1307         -              Normal
  06/16/2025 03 PM PDT            8.54           1307         0              Normal
  06/16/2025 04 PM PDT            8.54           1307         0              Normal
  06/16/2025 05 PM PDT            8.53           1301         -              Normal
  06/16/2025 06 PM PDT            8.53           1301         0              Normal
  06/16/2025 07 PM PDT            8.52           1295         -              Normal
  06/16/2025 08 PM PDT            8.52           1295         0              Normal
  06/16/2025 09 PM PDT            8.52           1295         0              Normal
  06/16/2025 10 PM PDT            8.52           1295         0              Normal
  06/16/2025 11 PM PDT            8.52           1295         0              Normal
  06/17/2025 12 AM PDT            8.52           1295         0              Normal
  06/17/2025 01 AM PDT            8.53           1301         +              Normal
  06/17/2025 02 AM PDT            8.54           1307         +              Normal
  06/17/2025 03 AM PDT            8.55           1313         +              Normal
  06/17/2025 04 AM PDT            8.56           1319         +              Normal
  06/17/2025 05 AM PDT            8.57           1325         +              Normal
  06/17/2025 06 AM PDT            8.59           1338         +              Normal
  06/17/2025 07 AM PDT            8.61           1350         +              Normal
  06/17/2025 08 AM PDT            8.62           1356         +              Normal
  06/17/2025 09 AM PDT            8.64           1368         +              Normal
  06/17/2025 10 AM PDT            8.66           1381         +              Normal
  06/17/2025 11 AM PDT            8.68           1393         +              Normal
  06/17/2025 12 PM PDT            8.70           1406         +              Normal
  06/17/2025 01 PM PDT            8.72           1418         +              Normal
  06/17/2025 02 PM PDT            8.74           1431         +              Normal
  06/17/2025 03 PM PDT            8.76           1444         +              Normal
  06/17/2025 04 PM PDT            8.77           1450         +              Normal
  06/17/2025 05 PM PDT            8.79           1463         +              Normal
  06/17/2025 06 PM PDT            8.81           1475         +              Normal
  06/17/2025 07 PM PDT            8.83           1488         +              Normal
  06/17/2025 08 PM PDT            8.84           1495         +              Normal
  06/17/2025 09 PM PDT            8.86           1508         +              Normal
  06/17/2025 10 PM PDT            8.88           1520         +              Normal
  06/17/2025 11 PM PDT            8.90           1533         +              Normal
  06/18/2025 12 AM PDT            8.91           1540         +              Normal
  06/18/2025 01 AM PDT            8.93           1553         +              Normal
  06/18/2025 02 AM PDT            8.95           1566         +              Normal
  06/18/2025 03 AM PDT            8.97           1579         +              Normal
  06/18/2025 04 AM PDT            8.99           1592         +              Normal
  06/18/2025 05 AM PDT            9.01           1606         +              Normal
  06/18/2025 06 AM PDT            9.04           1626         +              Normal
  06/18/2025 07 AM PDT            9.06           1639         +              Normal
  06/18/2025 08 AM PDT            9.08           1652         +              Normal
  06/18/2025 09 AM PDT            9.10           1666         +              Normal
  06/18/2025 10 AM PDT            9.12           1679         +              Normal
  06/18/2025 11 AM PDT            9.14           1693         +              Normal
  06/18/2025 12 PM PDT            9.16           1706         +              Normal
  06/18/2025 01 PM PDT            9.18           1720         +              Normal
  06/18/2025 02 PM PDT            9.19           1727         +              Normal
  06/18/2025 03 PM PDT            9.21           1740         +              Normal
  06/18/2025 04 PM PDT            9.23           1754         +              Normal
  06/18/2025 05 PM PDT            9.24           1761         +              Normal
  06/18/2025 06 PM PDT            9.26           1775         +              Normal
  06/18/2025 07 PM PDT            9.27           1782         +              Normal
  06/18/2025 08 PM PDT            9.29           1796         +              Normal
  06/18/2025 09 PM PDT            9.30           1803         +              Normal
  06/18/2025 10 PM PDT            9.31           1810         +              Normal
  06/18/2025 11 PM PDT            9.32           1817         +              Normal
  06/19/2025 12 AM PDT            9.34           1831         +              Normal
  06/19/2025 01 AM PDT            9.35           1838         +              Normal
  06/19/2025 02 AM PDT            9.36           1845         +              Normal
  06/19/2025 03 AM PDT            9.37           1852         +              Normal
  06/19/2025 04 AM PDT            9.38           1859         +              Normal
  06/19/2025 05 AM PDT            9.38           1859         0              Normal
  06/19/2025 06 AM PDT            9.39           1866         +              Normal
  06/19/2025 07 AM PDT            9.40           1873         +              Normal
  06/19/2025 08 AM PDT            9.41           1880         +              Normal
  06/19/2025 09 AM PDT            9.41           1880         0              Normal
  06/19/2025 10 AM PDT            9.42           1887         +              Normal
  06/19/2025 11 AM PDT            9.42           1887         0              Normal
  06/19/2025 12 PM PDT            9.43           1894         +              Normal
  06/19/2025 01 PM PDT            9.43           1894         0              Normal
  06/19/2025 02 PM PDT            9.44           1901         +              Normal
  06/19/2025 03 PM PDT            9.44           1901         0              Normal
  06/19/2025 04 PM PDT            9.45           1908         +              Normal
  06/19/2025 05 PM PDT            9.45           1908         0              Normal
  06/19/2025 06 PM PDT            9.45           1908         0              Normal
  06/19/2025 07 PM PDT            9.46           1916         +              Normal
  06/19/2025 08 PM PDT            9.46           1916         0              Normal
  06/19/2025 09 PM PDT            9.46           1916         0              Normal
  06/19/2025 10 PM PDT            9.46           1916         0              Normal
  06/19/2025 11 PM PDT            9.47           1923         +              Normal
  06/20/2025 12 AM PDT            9.47           1923         0              Normal
  06/20/2025 01 AM PDT            9.47           1923         0              Normal
  06/20/2025 02 AM PDT            9.47           1923         0              Normal
  06/20/2025 03 AM PDT            9.47           1923         0              Normal
  06/20/2025 04 AM PDT            9.48           1930         +              Normal
  06/20/2025 05 AM PDT            9.48           1930         0              Normal
  06/20/2025 06 AM PDT            9.48           1930         0              Normal
  06/20/2025 07 AM PDT            9.48           1930         0              Normal
  06/20/2025 08 AM PDT            9.48           1930         0              Normal
  06/20/2025 09 AM PDT            9.48           1930         0              Normal
  06/20/2025 10 AM PDT            9.48           1930         0              Normal
  06/20/2025 11 AM PDT            9.49           1937         +              Normal
  06/20/2025 12 PM PDT            9.49           1937         0              Normal
  06/20/2025 01 PM PDT            9.49           1937         0              Normal
  06/20/2025 02 PM PDT            9.49           1937         0              Normal
  06/20/2025 03 PM PDT            9.49           1937         0              Normal
  06/20/2025 04 PM PDT            9.49           1937         0              Normal
  06/20/2025 05 PM PDT            9.49           1937         0              Normal
  06/20/2025 06 PM PDT            9.49           1937         0              Normal
  06/20/2025 07 PM PDT            9.49           1937         0              Normal
  06/20/2025 08 PM PDT            9.49           1937         0              Normal
  06/20/2025 09 PM PDT            9.50           1944         +              Normal
  06/20/2025 10 PM PDT            9.50           1944         0              Normal
  06/20/2025 11 PM PDT            9.50           1944         0              Normal
  06/21/2025 12 AM PDT            9.50           1944         0              Normal
  06/21/2025 01 AM PDT            9.50           1944         0              Normal
  06/21/2025 02 AM PDT            9.50           1944         0              Normal
  06/21/2025 03 AM PDT            9.50           1944         0              Normal
  06/21/2025 04 AM PDT            9.51           1951         +              Normal
  06/21/2025 05 AM PDT            9.51           1951         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.