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: May 16 2026 at 8:07 AM PDTNext Issuance: May 17 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:  05/16/2026 at 08:07 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/16/2026 at 07:00 AM PDT
# Maximum Observed Stage:                       9.61 Feet
# Maximum Observed Flow:                        2076 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/21/2026 at 02:00 AM PDT
# Maximum Forecast Stage:                       10.06 Feet
# Maximum Forecast Flow:                        2420 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/11/2026 08 AM PDT            8.59           1381                        Normal
  05/11/2026 09 AM PDT            8.57           1368         -              Normal
  05/11/2026 10 AM PDT            8.53           1344         -              Normal
  05/11/2026 11 AM PDT            8.49           1319         -              Normal
  05/11/2026 12 PM PDT            8.47           1307         -              Normal
  05/11/2026 01 PM PDT            8.46           1301         -              Normal
  05/11/2026 02 PM PDT            8.44           1289         -              Normal
  05/11/2026 03 PM PDT            8.42           1277         -              Normal
  05/11/2026 04 PM PDT            8.42           1277         0              Normal
  05/11/2026 05 PM PDT            8.37           1247         -              Normal
  05/11/2026 06 PM PDT            8.40           1265         +              Normal
  05/11/2026 07 PM PDT            8.38           1253         -              Normal
  05/11/2026 08 PM PDT            8.34           1229         -              Normal
  05/11/2026 09 PM PDT            8.35           1235         +              Normal
  05/11/2026 10 PM PDT            8.33           1223         -              Normal
  05/11/2026 11 PM PDT            8.31           1211         -              Normal
  05/12/2026 12 AM PDT            8.31           1211         0              Normal
  05/12/2026 01 AM PDT            8.30           1205         -              Normal
  05/12/2026 02 AM PDT            8.29           1200         -              Normal
  05/12/2026 03 AM PDT            8.29           1200         0              Normal
  05/12/2026 04 AM PDT            8.29           1200         0              Normal
  05/12/2026 05 AM PDT            8.28           1194         -              Normal
  05/12/2026 06 AM PDT            8.28           1194         0              Normal
  05/12/2026 07 AM PDT            8.28           1194         0              Normal
  05/12/2026 08 AM PDT            8.26           1182         -              Normal
  05/12/2026 09 AM PDT            8.26           1182         0              Normal
  05/12/2026 10 AM PDT            8.27           1188         +              Normal
  05/12/2026 11 AM PDT            8.24           1170         -              Normal
  05/12/2026 12 PM PDT            8.22           1159         -              Normal
  05/12/2026 01 PM PDT            8.18           1136         -              Normal
  05/12/2026 02 PM PDT            8.16           1124         -              Normal
  05/12/2026 03 PM PDT            8.13           1107         -              Normal
  05/12/2026 04 PM PDT            8.13           1107         0              Normal
  05/12/2026 05 PM PDT            8.12           1102         -              Normal
  05/12/2026 06 PM PDT            8.13           1107         +              Normal
  05/12/2026 07 PM PDT            8.14           1113         +              Normal
  05/12/2026 08 PM PDT            8.17           1130         +              Normal
  05/12/2026 09 PM PDT            8.19           1142         +              Normal
  05/12/2026 10 PM PDT            8.23           1165         +              Normal
  05/12/2026 11 PM PDT            8.23           1165         0              Normal
  05/13/2026 12 AM PDT            8.26           1182         +              Normal
  05/13/2026 01 AM PDT            8.30           1205         +              Normal
  05/13/2026 02 AM PDT            8.35           1235         +              Normal
  05/13/2026 03 AM PDT            8.40           1265         +              Normal
  05/13/2026 04 AM PDT            8.45           1295         +              Normal
  05/13/2026 05 AM PDT            8.48           1313         +              Normal
  05/13/2026 06 AM PDT            8.52           1338         +              Normal
  05/13/2026 07 AM PDT            8.55           1356         +              Normal
  05/13/2026 08 AM PDT            8.58           1375         +              Normal
  05/13/2026 09 AM PDT            8.61           1393         +              Normal
  05/13/2026 10 AM PDT            8.65           1418         +              Normal
  05/13/2026 11 AM PDT            8.65           1418         0              Normal
  05/13/2026 12 PM PDT            8.66           1425         +              Normal
  05/13/2026 01 PM PDT            8.68           1437         +              Normal
  05/13/2026 02 PM PDT            8.68           1437         0              Normal
  05/13/2026 03 PM PDT            8.69           1444         +              Normal
  05/13/2026 04 PM PDT            8.71           1456         +              Normal
  05/13/2026 05 PM PDT            8.70           1450         -              Normal
  05/13/2026 06 PM PDT            8.72           1463         +              Normal
  05/13/2026 07 PM PDT            8.72           1463         0              Normal
  05/13/2026 08 PM PDT            8.76           1488         +              Normal
  05/13/2026 09 PM PDT            8.78           1501         +              Normal
  05/13/2026 10 PM PDT            8.78           1501         0              Normal
  05/13/2026 11 PM PDT            8.78           1501         0              Normal
  05/14/2026 12 AM PDT            8.79           1508         +              Normal
  05/14/2026 01 AM PDT            8.79           1508         0              Normal
  05/14/2026 02 AM PDT            8.79           1508         0              Normal
  05/14/2026 03 AM PDT            8.79           1508         0              Normal
  05/14/2026 04 AM PDT            8.80           1514         +              Normal
  05/14/2026 05 AM PDT            8.81           1520         +              Normal
  05/14/2026 06 AM PDT            8.82           1527         +              Normal
  05/14/2026 07 AM PDT            8.83           1533         +              Normal
  05/14/2026 08 AM PDT            8.85           1546         +              Normal
  05/14/2026 09 AM PDT            8.85           1546         0              Normal
  05/14/2026 10 AM PDT            8.84           1540         -              Normal
  05/14/2026 11 AM PDT            8.85           1546         +              Normal
  05/14/2026 12 PM PDT            8.86           1553         +              Normal
  05/14/2026 01 PM PDT            8.89           1573         +              Normal
  05/14/2026 02 PM PDT            8.90           1579         +              Normal
  05/14/2026 03 PM PDT            8.93           1599         +              Normal
  05/14/2026 04 PM PDT            8.95           1612         +              Normal
  05/14/2026 05 PM PDT            8.96           1619         +              Normal
  05/14/2026 06 PM PDT            8.99           1639         +              Normal
  05/14/2026 07 PM PDT            9.02           1659         +              Normal
  05/14/2026 08 PM PDT            9.05           1679         +              Normal
  05/14/2026 09 PM PDT            9.07           1693         +              Normal
  05/14/2026 10 PM PDT            9.09           1706         +              Normal
  05/14/2026 11 PM PDT            9.10           1713         +              Normal
  05/15/2026 12 AM PDT            9.11           1720         +              Normal
  05/15/2026 01 AM PDT            9.13           1734         +              Normal
  05/15/2026 02 AM PDT            9.14           1740         +              Normal
  05/15/2026 03 AM PDT            9.17           1761         +              Normal
  05/15/2026 04 AM PDT            9.19           1775         +              Normal
  05/15/2026 05 AM PDT            9.20           1782         +              Normal
  05/15/2026 06 AM PDT            9.22           1796         +              Normal
  05/15/2026 07 AM PDT            9.24           1810         +              Normal
  05/15/2026 08 AM PDT            9.25           1817         +              Normal
  05/15/2026 09 AM PDT            9.24           1810         -              Normal
  05/15/2026 10 AM PDT            9.25           1817         +              Normal
  05/15/2026 11 AM PDT            9.27           1831         +              Normal
  05/15/2026 12 PM PDT            9.28           1838         +              Normal
  05/15/2026 01 PM PDT            9.30           1852         +              Normal
  05/15/2026 02 PM PDT            9.30           1852         0              Normal
  05/15/2026 03 PM PDT            9.31           1859         +              Normal
  05/15/2026 04 PM PDT            9.32           1866         +              Normal
  05/15/2026 05 PM PDT            9.34           1880         +              Normal
  05/15/2026 06 PM PDT            9.38           1908         +              Normal
  05/15/2026 07 PM PDT            9.43           1944         +              Normal
  05/15/2026 08 PM PDT            9.45           1959         +              Normal
  05/15/2026 09 PM PDT            9.46           1966         +              Normal
  05/15/2026 10 PM PDT            9.48           1980         +              Normal
  05/15/2026 11 PM PDT            9.48           1980         0              Normal
  05/16/2026 12 AM PDT            9.49           1988         +              Normal
  05/16/2026 01 AM PDT            9.50           1995         +              Normal
  05/16/2026 02 AM PDT            9.52           2009         +              Normal
  05/16/2026 03 AM PDT            9.51           2002         -              Normal
  05/16/2026 04 AM PDT            9.56           2039         +              Normal
  05/16/2026 05 AM PDT            9.59           2061         +              Normal
  05/16/2026 06 AM PDT            9.60           2068         +              Normal
  05/16/2026 07 AM PDT            9.61           2076         +              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/16/2026 08 AM PDT            9.62           2083                        Normal
  05/16/2026 09 AM PDT            9.63           2090         +              Normal
  05/16/2026 10 AM PDT            9.64           2098         +              Normal
  05/16/2026 11 AM PDT            9.65           2105         +              Normal
  05/16/2026 12 PM PDT            9.66           2113         +              Normal
  05/16/2026 01 PM PDT            9.68           2128         +              Normal
  05/16/2026 02 PM PDT            9.69           2135         +              Normal
  05/16/2026 03 PM PDT            9.70           2143         +              Normal
  05/16/2026 04 PM PDT            9.71           2150         +              Normal
  05/16/2026 05 PM PDT            9.71           2150         0              Normal
  05/16/2026 06 PM PDT            9.72           2158         +              Normal
  05/16/2026 07 PM PDT            9.73           2165         +              Normal
  05/16/2026 08 PM PDT            9.74           2173         +              Normal
  05/16/2026 09 PM PDT            9.75           2180         +              Normal
  05/16/2026 10 PM PDT            9.76           2188         +              Normal
  05/16/2026 11 PM PDT            9.77           2195         +              Normal
  05/17/2026 12 AM PDT            9.78           2203         +              Normal
  05/17/2026 01 AM PDT            9.79           2210         +              Normal
  05/17/2026 02 AM PDT            9.79           2210         0              Normal
  05/17/2026 03 AM PDT            9.80           2218         +              Normal
  05/17/2026 04 AM PDT            9.81           2226         +              Normal
  05/17/2026 05 AM PDT            9.82           2233         +              Normal
  05/17/2026 06 AM PDT            9.82           2233         0              Normal
  05/17/2026 07 AM PDT            9.83           2241         +              Normal
  05/17/2026 08 AM PDT            9.84           2249         +              Normal
  05/17/2026 09 AM PDT            9.84           2249         0              Normal
  05/17/2026 10 AM PDT            9.85           2256         +              Normal
  05/17/2026 11 AM PDT            9.85           2256         0              Normal
  05/17/2026 12 PM PDT            9.86           2264         +              Normal
  05/17/2026 01 PM PDT            9.86           2264         0              Normal
  05/17/2026 02 PM PDT            9.87           2272         +              Normal
  05/17/2026 03 PM PDT            9.87           2272         0              Normal
  05/17/2026 04 PM PDT            9.88           2279         +              Normal
  05/17/2026 05 PM PDT            9.88           2279         0              Normal
  05/17/2026 06 PM PDT            9.89           2287         +              Normal
  05/17/2026 07 PM PDT            9.89           2287         0              Normal
  05/17/2026 08 PM PDT            9.89           2287         0              Normal
  05/17/2026 09 PM PDT            9.90           2295         +              Normal
  05/17/2026 10 PM PDT            9.90           2295         0              Normal
  05/17/2026 11 PM PDT            9.90           2295         0              Normal
  05/18/2026 12 AM PDT            9.91           2302         +              Normal
  05/18/2026 01 AM PDT            9.91           2302         0              Normal
  05/18/2026 02 AM PDT            9.91           2302         0              Normal
  05/18/2026 03 AM PDT            9.92           2310         +              Normal
  05/18/2026 04 AM PDT            9.92           2310         0              Normal
  05/18/2026 05 AM PDT            9.92           2310         0              Normal
  05/18/2026 06 AM PDT            9.93           2318         +              Normal
  05/18/2026 07 AM PDT            9.93           2318         0              Normal
  05/18/2026 08 AM PDT            9.93           2318         0              Normal
  05/18/2026 09 AM PDT            9.93           2318         0              Normal
  05/18/2026 10 AM PDT            9.94           2326         +              Normal
  05/18/2026 11 AM PDT            9.94           2326         0              Normal
  05/18/2026 12 PM PDT            9.94           2326         0              Normal
  05/18/2026 01 PM PDT            9.94           2326         0              Normal
  05/18/2026 02 PM PDT            9.94           2326         0              Normal
  05/18/2026 03 PM PDT            9.95           2333         +              Normal
  05/18/2026 04 PM PDT            9.95           2333         0              Normal
  05/18/2026 05 PM PDT            9.95           2333         0              Normal
  05/18/2026 06 PM PDT            9.95           2333         0              Normal
  05/18/2026 07 PM PDT            9.96           2341         +              Normal
  05/18/2026 08 PM PDT            9.96           2341         0              Normal
  05/18/2026 09 PM PDT            9.96           2341         0              Normal
  05/18/2026 10 PM PDT            9.96           2341         0              Normal
  05/18/2026 11 PM PDT            9.96           2341         0              Normal
  05/19/2026 12 AM PDT            9.96           2341         0              Normal
  05/19/2026 01 AM PDT            9.97           2349         +              Normal
  05/19/2026 02 AM PDT            9.97           2349         0              Normal
  05/19/2026 03 AM PDT            9.97           2349         0              Normal
  05/19/2026 04 AM PDT            9.97           2349         0              Normal
  05/19/2026 05 AM PDT            9.97           2349         0              Normal
  05/19/2026 06 AM PDT            9.98           2357         +              Normal
  05/19/2026 07 AM PDT            9.98           2357         0              Normal
  05/19/2026 08 AM PDT            9.98           2357         0              Normal
  05/19/2026 09 AM PDT            9.98           2357         0              Normal
  05/19/2026 10 AM PDT            9.98           2357         0              Normal
  05/19/2026 11 AM PDT            9.98           2357         0              Normal
  05/19/2026 12 PM PDT            9.99           2365         +              Normal
  05/19/2026 01 PM PDT            9.99           2365         0              Normal
  05/19/2026 02 PM PDT            9.99           2365         0              Normal
  05/19/2026 03 PM PDT            9.99           2365         0              Normal
  05/19/2026 04 PM PDT            9.99           2365         0              Normal
  05/19/2026 05 PM PDT           10.00           2373         +              Normal
  05/19/2026 06 PM PDT           10.00           2373         0              Normal
  05/19/2026 07 PM PDT           10.00           2373         0              Normal
  05/19/2026 08 PM PDT           10.00           2373         0              Normal
  05/19/2026 09 PM PDT           10.00           2373         0              Normal
  05/19/2026 10 PM PDT           10.01           2380         +              Normal
  05/19/2026 11 PM PDT           10.01           2380         0              Normal
  05/20/2026 12 AM PDT           10.01           2380         0              Normal
  05/20/2026 01 AM PDT           10.01           2380         0              Normal
  05/20/2026 02 AM PDT           10.01           2380         0              Normal
  05/20/2026 03 AM PDT           10.02           2388         +              Normal
  05/20/2026 04 AM PDT           10.02           2388         0              Normal
  05/20/2026 05 AM PDT           10.02           2388         0              Normal
  05/20/2026 06 AM PDT           10.02           2388         0              Normal
  05/20/2026 07 AM PDT           10.02           2388         0              Normal
  05/20/2026 08 AM PDT           10.02           2388         0              Normal
  05/20/2026 09 AM PDT           10.03           2396         +              Normal
  05/20/2026 10 AM PDT           10.03           2396         0              Normal
  05/20/2026 11 AM PDT           10.03           2396         0              Normal
  05/20/2026 12 PM PDT           10.03           2396         0              Normal
  05/20/2026 01 PM PDT           10.03           2396         0              Normal
  05/20/2026 02 PM PDT           10.04           2404         +              Normal
  05/20/2026 03 PM PDT           10.04           2404         0              Normal
  05/20/2026 04 PM PDT           10.04           2404         0              Normal
  05/20/2026 05 PM PDT           10.04           2404         0              Normal
  05/20/2026 06 PM PDT           10.04           2404         0              Normal
  05/20/2026 07 PM PDT           10.04           2404         0              Normal
  05/20/2026 08 PM PDT           10.05           2412         +              Normal
  05/20/2026 09 PM PDT           10.05           2412         0              Normal
  05/20/2026 10 PM PDT           10.05           2412         0              Normal
  05/20/2026 11 PM PDT           10.05           2412         0              Normal
  05/21/2026 12 AM PDT           10.05           2412         0              Normal
  05/21/2026 01 AM PDT           10.05           2412         0              Normal
  05/21/2026 02 AM PDT           10.06           2420         +              Normal
  05/21/2026 03 AM PDT           10.06           2420         0              Normal
  05/21/2026 04 AM PDT           10.06           2420         0              Normal
  05/21/2026 05 AM PDT           10.06           2420         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.