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 20 2026 at 7:29 AM PDTNext Issuance: Oct 21 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:  10/20/2026 at 07:29 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  10/19/2026 at 09:00 AM PDT
# Maximum Observed Stage:                       10.21 Feet
# Maximum Observed Flow:                        2539 cfs
#
# Earliest Date & Time of Maximum Forecast:     10/24/2026 at 10:00 PM PDT
# Maximum Forecast Stage:                       10.40 Feet
# Maximum Forecast Flow:                        2695 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  10/15/2026 07 AM PDT            7.78            917                        Normal
  10/15/2026 08 AM PDT            7.78            917         0              Normal
  10/15/2026 09 AM PDT            7.78            917         0              Normal
  10/15/2026 10 AM PDT            7.78            917         0              Normal
  10/15/2026 11 AM PDT            7.78            917         0              Normal
  10/15/2026 12 PM PDT            7.78            917         0              Normal
  10/15/2026 01 PM PDT            7.78            917         0              Normal
  10/15/2026 02 PM PDT            7.78            917         0              Normal
  10/15/2026 03 PM PDT            7.79            922         +              Normal
  10/15/2026 04 PM PDT            7.79            922         0              Normal
  10/15/2026 05 PM PDT            7.79            922         0              Normal
  10/15/2026 06 PM PDT            7.79            922         0              Normal
  10/15/2026 07 PM PDT            7.80            927         +              Normal
  10/15/2026 08 PM PDT            7.82            938         +              Normal
  10/15/2026 09 PM PDT            7.82            938         0              Normal
  10/15/2026 10 PM PDT            7.84            948         +              Normal
  10/15/2026 11 PM PDT            7.85            954         +              Normal
  10/16/2026 12 AM PDT            7.86            959         +              Normal
  10/16/2026 01 AM PDT            7.88            970         +              Normal
  10/16/2026 02 AM PDT            7.90            980         +              Normal
  10/16/2026 03 AM PDT            7.92            991         +              Normal
  10/16/2026 04 AM PDT            7.94           1002         +              Normal
  10/16/2026 05 AM PDT            7.96           1013         +              Normal
  10/16/2026 06 AM PDT            7.97           1018         +              Normal
  10/16/2026 07 AM PDT            8.00           1035         +              Normal
  10/16/2026 08 AM PDT            8.02           1046         +              Normal
  10/16/2026 09 AM PDT            8.04           1057         +              Normal
  10/16/2026 10 AM PDT            8.07           1074         +              Normal
  10/16/2026 11 AM PDT            8.10           1090         +              Normal
  10/16/2026 12 PM PDT            8.13           1107         +              Normal
  10/16/2026 01 PM PDT            8.16           1124         +              Normal
  10/16/2026 02 PM PDT            8.19           1142         +              Normal
  10/16/2026 03 PM PDT            8.22           1159         +              Normal
  10/16/2026 04 PM PDT            8.25           1176         +              Normal
  10/16/2026 05 PM PDT            8.28           1194         +              Normal
  10/16/2026 06 PM PDT            8.32           1217         +              Normal
  10/16/2026 07 PM PDT            8.35           1235         +              Normal
  10/16/2026 08 PM PDT            8.39           1259         +              Normal
  10/16/2026 09 PM PDT            8.43           1283         +              Normal
  10/16/2026 10 PM PDT            8.46           1301         +              Normal
  10/16/2026 11 PM PDT            8.51           1331         +              Normal
  10/17/2026 12 AM PDT            8.54           1350         +              Normal
  10/17/2026 01 AM PDT            8.58           1375         +              Normal
  10/17/2026 02 AM PDT            8.62           1400         +              Normal
  10/17/2026 03 AM PDT            8.66           1425         +              Normal
  10/17/2026 04 AM PDT            8.70           1450         +              Normal
  10/17/2026 05 AM PDT            8.73           1469         +              Normal
  10/17/2026 06 AM PDT            8.78           1501         +              Normal
  10/17/2026 07 AM PDT            8.82           1527         +              Normal
  10/17/2026 08 AM PDT            8.86           1553         +              Normal
  10/17/2026 09 AM PDT            8.90           1579         +              Normal
  10/17/2026 10 AM PDT            8.93           1599         +              Normal
  10/17/2026 11 AM PDT            8.97           1626         +              Normal
  10/17/2026 12 PM PDT            9.00           1646         +              Normal
  10/17/2026 01 PM PDT            9.05           1679         +              Normal
  10/17/2026 02 PM PDT            9.08           1700         +              Normal
  10/17/2026 03 PM PDT            9.12           1727         +              Normal
  10/17/2026 04 PM PDT            9.17           1761         +              Normal
  10/17/2026 05 PM PDT            9.20           1782         +              Normal
  10/17/2026 06 PM PDT            9.21           1789         +              Normal
  10/17/2026 07 PM PDT            9.25           1817         +              Normal
  10/17/2026 08 PM PDT            9.28           1838         +              Normal
  10/17/2026 09 PM PDT            9.31           1859         +              Normal
  10/17/2026 10 PM PDT            9.33           1873         +              Normal
  10/17/2026 11 PM PDT            9.38           1908         +              Normal
  10/18/2026 12 AM PDT            9.41           1930         +              Normal
  10/18/2026 01 AM PDT            9.43           1944         +              Normal
  10/18/2026 02 AM PDT            9.47           1973         +              Normal
  10/18/2026 03 AM PDT            9.50           1995         +              Normal
  10/18/2026 04 AM PDT            9.54           2024         +              Normal
  10/18/2026 05 AM PDT            9.57           2046         +              Normal
  10/18/2026 06 AM PDT            9.60           2068         +              Normal
  10/18/2026 07 AM PDT            9.63           2090         +              Normal
  10/18/2026 08 AM PDT            9.65           2105         +              Normal
  10/18/2026 09 AM PDT            9.68           2128         +              Normal
  10/18/2026 10 AM PDT            9.71           2150         +              Normal
  10/18/2026 11 AM PDT            9.75           2180         +              Normal
  10/18/2026 12 PM PDT            9.77           2195         +              Normal
  10/18/2026 01 PM PDT            9.81           2226         +              Normal
  10/18/2026 02 PM PDT            9.85           2256         +              Normal
  10/18/2026 03 PM PDT            9.87           2272         +              Normal
  10/18/2026 04 PM PDT            9.90           2295         +              Normal
  10/18/2026 05 PM PDT            9.91           2302         +              Normal
  10/18/2026 06 PM PDT            9.96           2341         +              Normal
  10/18/2026 07 PM PDT            9.98           2357         +              Normal
  10/18/2026 08 PM PDT           10.00           2373         +              Normal
  10/18/2026 09 PM PDT           10.03           2396         +              Normal
  10/18/2026 10 PM PDT           10.04           2404         +              Normal
  10/18/2026 11 PM PDT           10.07           2428         +              Normal
  10/19/2026 12 AM PDT           10.09           2443         +              Normal
  10/19/2026 01 AM PDT           10.11           2459         +              Normal
  10/19/2026 02 AM PDT           10.14           2483         +              Normal
  10/19/2026 03 AM PDT           10.15           2491         +              Normal
  10/19/2026 04 AM PDT           10.18           2515         +              Normal
  10/19/2026 05 AM PDT           10.20           2531         +              Normal
  10/19/2026 06 AM PDT           10.21           2539         +              Normal
  10/19/2026 07 AM PDT           10.21           2539         0              Normal
  10/19/2026 08 AM PDT           10.21           2539         0              Normal
  10/19/2026 09 AM PDT           10.21           2539         0              Normal
  10/19/2026 10 AM PDT           10.20           2531         -              Normal
  10/19/2026 11 AM PDT           10.19           2523         -              Normal
  10/19/2026 12 PM PDT           10.18           2515         -              Normal
  10/19/2026 01 PM PDT           10.16           2499         -              Normal
  10/19/2026 02 PM PDT           10.15           2491         -              Normal
  10/19/2026 03 PM PDT           10.10           2451         -              Normal
  10/19/2026 04 PM PDT           10.08           2436         -              Normal
  10/19/2026 05 PM PDT           10.04           2404         -              Normal
  10/19/2026 06 PM PDT           10.01           2380         -              Normal
  10/19/2026 07 PM PDT            9.98           2357         -              Normal
  10/19/2026 08 PM PDT            9.97           2349         -              Normal
  10/19/2026 09 PM PDT            9.93           2318         -              Normal
  10/19/2026 10 PM PDT            9.90           2295         -              Normal
  10/19/2026 11 PM PDT            9.87           2272         -              Normal
  10/20/2026 12 AM PDT            9.85           2256         -              Normal
  10/20/2026 01 AM PDT            9.84           2249         -              Normal
  10/20/2026 02 AM PDT            9.83           2241         -              Normal
  10/20/2026 03 AM PDT            9.82           2233         -              Normal
  10/20/2026 04 AM PDT            9.81           2226         -              Normal
  10/20/2026 05 AM PDT            9.80           2218         -              Normal
  10/20/2026 06 AM PDT            9.78           2203         -              Normal
  10/20/2026 07 AM PDT            9.75           2180         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  10/20/2026 08 AM PDT            9.72           2158                        Normal
  10/20/2026 09 AM PDT            9.69           2135         -              Normal
  10/20/2026 10 AM PDT            9.66           2113         -              Normal
  10/20/2026 11 AM PDT            9.63           2090         -              Normal
  10/20/2026 12 PM PDT            9.61           2076         -              Normal
  10/20/2026 01 PM PDT            9.57           2046         -              Normal
  10/20/2026 02 PM PDT            9.54           2024         -              Normal
  10/20/2026 03 PM PDT            9.51           2002         -              Normal
  10/20/2026 04 PM PDT            9.48           1980         -              Normal
  10/20/2026 05 PM PDT            9.45           1959         -              Normal
  10/20/2026 06 PM PDT            9.41           1930         -              Normal
  10/20/2026 07 PM PDT            9.38           1908         -              Normal
  10/20/2026 08 PM PDT            9.35           1887         -              Normal
  10/20/2026 09 PM PDT            9.32           1866         -              Normal
  10/20/2026 10 PM PDT            9.29           1845         -              Normal
  10/20/2026 11 PM PDT            9.26           1824         -              Normal
  10/21/2026 12 AM PDT            9.23           1803         -              Normal
  10/21/2026 01 AM PDT            9.19           1775         -              Normal
  10/21/2026 02 AM PDT            9.16           1754         -              Normal
  10/21/2026 03 AM PDT            9.12           1727         -              Normal
  10/21/2026 04 AM PDT            9.09           1706         -              Normal
  10/21/2026 05 AM PDT            9.05           1679         -              Normal
  10/21/2026 06 AM PDT            9.02           1659         -              Normal
  10/21/2026 07 AM PDT            8.98           1632         -              Normal
  10/21/2026 08 AM PDT            8.94           1606         -              Normal
  10/21/2026 09 AM PDT            8.90           1579         -              Normal
  10/21/2026 10 AM PDT            8.87           1560         -              Normal
  10/21/2026 11 AM PDT            8.83           1533         -              Normal
  10/21/2026 12 PM PDT            8.79           1508         -              Normal
  10/21/2026 01 PM PDT            8.76           1488         -              Normal
  10/21/2026 02 PM PDT            8.72           1463         -              Normal
  10/21/2026 03 PM PDT            8.69           1444         -              Normal
  10/21/2026 04 PM PDT            8.66           1425         -              Normal
  10/21/2026 05 PM PDT            8.62           1400         -              Normal
  10/21/2026 06 PM PDT            8.59           1381         -              Normal
  10/21/2026 07 PM PDT            8.56           1362         -              Normal
  10/21/2026 08 PM PDT            8.53           1344         -              Normal
  10/21/2026 09 PM PDT            8.51           1331         -              Normal
  10/21/2026 10 PM PDT            8.48           1313         -              Normal
  10/21/2026 11 PM PDT            8.46           1301         -              Normal
  10/22/2026 12 AM PDT            8.44           1289         -              Normal
  10/22/2026 01 AM PDT            8.42           1277         -              Normal
  10/22/2026 02 AM PDT            8.41           1271         -              Normal
  10/22/2026 03 AM PDT            8.40           1265         -              Normal
  10/22/2026 04 AM PDT            8.39           1259         -              Normal
  10/22/2026 05 AM PDT            8.39           1259         0              Normal
  10/22/2026 06 AM PDT            8.40           1265         +              Normal
  10/22/2026 07 AM PDT            8.40           1265         0              Normal
  10/22/2026 08 AM PDT            8.42           1277         +              Normal
  10/22/2026 09 AM PDT            8.43           1283         +              Normal
  10/22/2026 10 AM PDT            8.45           1295         +              Normal
  10/22/2026 11 AM PDT            8.46           1301         +              Normal
  10/22/2026 12 PM PDT            8.48           1313         +              Normal
  10/22/2026 01 PM PDT            8.50           1325         +              Normal
  10/22/2026 02 PM PDT            8.52           1338         +              Normal
  10/22/2026 03 PM PDT            8.55           1356         +              Normal
  10/22/2026 04 PM PDT            8.57           1368         +              Normal
  10/22/2026 05 PM PDT            8.59           1381         +              Normal
  10/22/2026 06 PM PDT            8.61           1393         +              Normal
  10/22/2026 07 PM PDT            8.64           1412         +              Normal
  10/22/2026 08 PM PDT            8.66           1425         +              Normal
  10/22/2026 09 PM PDT            8.68           1437         +              Normal
  10/22/2026 10 PM PDT            8.71           1456         +              Normal
  10/22/2026 11 PM PDT            8.74           1475         +              Normal
  10/23/2026 12 AM PDT            8.78           1501         +              Normal
  10/23/2026 01 AM PDT            8.81           1520         +              Normal
  10/23/2026 02 AM PDT            8.86           1553         +              Normal
  10/23/2026 03 AM PDT            8.90           1579         +              Normal
  10/23/2026 04 AM PDT            8.95           1612         +              Normal
  10/23/2026 05 AM PDT            9.01           1652         +              Normal
  10/23/2026 06 AM PDT            9.06           1686         +              Normal
  10/23/2026 07 AM PDT            9.11           1720         +              Normal
  10/23/2026 08 AM PDT            9.17           1761         +              Normal
  10/23/2026 09 AM PDT            9.23           1803         +              Normal
  10/23/2026 10 AM PDT            9.28           1838         +              Normal
  10/23/2026 11 AM PDT            9.34           1880         +              Normal
  10/23/2026 12 PM PDT            9.39           1916         +              Normal
  10/23/2026 01 PM PDT            9.45           1959         +              Normal
  10/23/2026 02 PM PDT            9.50           1995         +              Normal
  10/23/2026 03 PM PDT            9.55           2031         +              Normal
  10/23/2026 04 PM PDT            9.61           2076         +              Normal
  10/23/2026 05 PM PDT            9.65           2105         +              Normal
  10/23/2026 06 PM PDT            9.70           2143         +              Normal
  10/23/2026 07 PM PDT            9.75           2180         +              Normal
  10/23/2026 08 PM PDT            9.79           2210         +              Normal
  10/23/2026 09 PM PDT            9.84           2249         +              Normal
  10/23/2026 10 PM PDT            9.88           2279         +              Normal
  10/23/2026 11 PM PDT            9.92           2310         +              Normal
  10/24/2026 12 AM PDT            9.96           2341         +              Normal
  10/24/2026 01 AM PDT           10.00           2373         +              Normal
  10/24/2026 02 AM PDT           10.04           2404         +              Normal
  10/24/2026 03 AM PDT           10.07           2428         +              Normal
  10/24/2026 04 AM PDT           10.11           2459         +              Normal
  10/24/2026 05 AM PDT           10.14           2483         +              Normal
  10/24/2026 06 AM PDT           10.17           2507         +              Normal
  10/24/2026 07 AM PDT           10.20           2531         +              Normal
  10/24/2026 08 AM PDT           10.22           2547         +              Normal
  10/24/2026 09 AM PDT           10.25           2572         +              Normal
  10/24/2026 10 AM PDT           10.27           2588         +              Normal
  10/24/2026 11 AM PDT           10.29           2604         +              Normal
  10/24/2026 12 PM PDT           10.31           2621         +              Normal
  10/24/2026 01 PM PDT           10.33           2637         +              Normal
  10/24/2026 02 PM PDT           10.34           2645         +              Normal
  10/24/2026 03 PM PDT           10.35           2653         +              Normal
  10/24/2026 04 PM PDT           10.36           2662         +              Normal
  10/24/2026 05 PM PDT           10.37           2670         +              Normal
  10/24/2026 06 PM PDT           10.38           2678         +              Normal
  10/24/2026 07 PM PDT           10.39           2686         +              Normal
  10/24/2026 08 PM PDT           10.39           2686         0              Normal
  10/24/2026 09 PM PDT           10.39           2686         0              Normal
  10/24/2026 10 PM PDT           10.40           2695         +              Normal
  10/24/2026 11 PM PDT           10.40           2695         0              Normal
  10/25/2026 12 AM PDT           10.39           2686         -              Normal
  10/25/2026 01 AM PDT           10.39           2686         0              Normal
  10/25/2026 02 AM PDT           10.39           2686         0              Normal
  10/25/2026 03 AM PDT           10.38           2678         -              Normal
  10/25/2026 04 AM PDT           10.38           2678         0              Normal
  10/25/2026 05 AM PDT           10.37           2670         -              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.