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SAN JOAQUIN RIVER - VERNALIS (VNSC1)
| Latitude: 37.68º N | Longitude: 121.27º W | Elevation: 35 Feet | | Forecast Type: Official Location |
| Location: San Joaquin County in California | Bulletin Group: San Joaquin | River Group: San Joaquin |
| Issuance Time: | May 05 2026 at 7:46 AM PDT | Next Issuance: | May 06 2026 at 9:00 AM PDT
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| Action/Monitor: 24.5 Feet | Minor Flood: 29.0 Feet | Moderate Flood: 32.0 Feet | Major Flood: 37.3 Feet |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: San Joaquin River - Vernalis (VNSC1)
#
# File Generation Time: 05/05/2026 at 07:46 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 04/30/2026 at 07:00 AM PDT
# Maximum Observed Stage: 10.78 Feet
# Maximum Observed Flow: 3017 cfs
#
# Earliest Date & Time of Maximum Forecast: 05/05/2026 at 08:00 AM PDT
# Maximum Forecast Stage: 9.38 Feet
# Maximum Forecast Flow: 1908 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
04/30/2026 07 AM PDT 10.78 3017 Normal
04/30/2026 08 AM PDT 10.77 3008 - Normal
04/30/2026 09 AM PDT 10.76 2999 - Normal
04/30/2026 10 AM PDT 10.75 2991 - Normal
04/30/2026 11 AM PDT 10.75 2991 0 Normal
04/30/2026 12 PM PDT 10.74 2982 - Normal
04/30/2026 01 PM PDT 10.72 2965 - Normal
04/30/2026 02 PM PDT 10.71 2956 - Normal
04/30/2026 03 PM PDT 10.68 2930 - Normal
04/30/2026 04 PM PDT 10.64 2896 - Normal
04/30/2026 05 PM PDT 10.62 2879 - Normal
04/30/2026 06 PM PDT 10.60 2862 - Normal
04/30/2026 07 PM PDT 10.60 2862 0 Normal
04/30/2026 08 PM PDT 10.61 2871 + Normal
04/30/2026 09 PM PDT 10.59 2854 - Normal
04/30/2026 10 PM PDT 10.58 2845 - Normal
04/30/2026 11 PM PDT 10.56 2828 - Normal
05/01/2026 12 AM PDT 10.56 2828 0 Normal
05/01/2026 01 AM PDT 10.55 2820 - Normal
05/01/2026 02 AM PDT 10.54 2811 - Normal
05/01/2026 03 AM PDT 10.53 2803 - Normal
05/01/2026 04 AM PDT 10.52 2795 - Normal
05/01/2026 05 AM PDT 10.51 2786 - Normal
05/01/2026 06 AM PDT 10.50 2778 - Normal
05/01/2026 07 AM PDT 10.49 2769 - Normal
05/01/2026 08 AM PDT 10.48 2761 - Normal
05/01/2026 09 AM PDT 10.47 2753 - Normal
05/01/2026 10 AM PDT 10.45 2736 - Normal
05/01/2026 11 AM PDT 10.43 2719 - Normal
05/01/2026 12 PM PDT 10.41 2703 - Normal
05/01/2026 01 PM PDT 10.40 2695 - Normal
05/01/2026 02 PM PDT 10.37 2670 - Normal
05/01/2026 03 PM PDT 10.34 2645 - Normal
05/01/2026 04 PM PDT 10.32 2629 - Normal
05/01/2026 05 PM PDT 10.29 2604 - Normal
05/01/2026 06 PM PDT 10.27 2588 - Normal
05/01/2026 07 PM PDT 10.25 2572 - Normal
05/01/2026 08 PM PDT 10.26 2580 + Normal
05/01/2026 09 PM PDT 10.22 2547 - Normal
05/01/2026 10 PM PDT 10.22 2547 0 Normal
05/01/2026 11 PM PDT 10.21 2539 - Normal
05/02/2026 12 AM PDT 10.21 2539 0 Normal
05/02/2026 01 AM PDT 10.20 2531 - Normal
05/02/2026 02 AM PDT 10.19 2523 - Normal
05/02/2026 03 AM PDT 10.18 2515 - Normal
05/02/2026 04 AM PDT 10.18 2515 0 Normal
05/02/2026 05 AM PDT 10.17 2507 - Normal
05/02/2026 06 AM PDT 10.15 2491 - Normal
05/02/2026 07 AM PDT 10.15 2491 0 Normal
05/02/2026 08 AM PDT 10.13 2475 - Normal
05/02/2026 09 AM PDT 10.13 2475 0 Normal
05/02/2026 10 AM PDT 10.11 2459 - Normal
05/02/2026 11 AM PDT 10.10 2451 - Normal
05/02/2026 12 PM PDT 10.08 2436 - Normal
05/02/2026 01 PM PDT 10.06 2420 - Normal
05/02/2026 02 PM PDT 10.05 2412 - Normal
05/02/2026 03 PM PDT 10.03 2396 - Normal
05/02/2026 04 PM PDT 10.01 2380 - Normal
05/02/2026 05 PM PDT 9.99 2365 - Normal
05/02/2026 06 PM PDT 9.98 2357 - Normal
05/02/2026 07 PM PDT 9.95 2333 - Normal
05/02/2026 08 PM PDT 9.95 2333 0 Normal
05/02/2026 09 PM PDT 9.93 2318 - Normal
05/02/2026 10 PM PDT 9.91 2302 - Normal
05/02/2026 11 PM PDT 9.91 2302 0 Normal
05/03/2026 12 AM PDT 9.91 2302 0 Normal
05/03/2026 01 AM PDT 9.91 2302 0 Normal
05/03/2026 02 AM PDT 9.91 2302 0 Normal
05/03/2026 03 AM PDT 9.92 2310 + Normal
05/03/2026 04 AM PDT 9.92 2310 0 Normal
05/03/2026 05 AM PDT 9.91 2302 - Normal
05/03/2026 06 AM PDT 9.91 2302 0 Normal
05/03/2026 07 AM PDT 9.90 2295 - Normal
05/03/2026 08 AM PDT 9.89 2287 - Normal
05/03/2026 09 AM PDT 9.88 2279 - Normal
05/03/2026 10 AM PDT 9.87 2272 - Normal
05/03/2026 11 AM PDT 9.88 2279 + Normal
05/03/2026 12 PM PDT 9.88 2279 0 Normal
05/03/2026 01 PM PDT 9.88 2279 0 Normal
05/03/2026 02 PM PDT 9.85 2256 - Normal
05/03/2026 03 PM PDT 9.84 2249 - Normal
05/03/2026 04 PM PDT 9.84 2249 0 Normal
05/03/2026 05 PM PDT 9.83 2241 - Normal
05/03/2026 06 PM PDT 9.80 2218 - Normal
05/03/2026 07 PM PDT 9.80 2218 0 Normal
05/03/2026 08 PM PDT 9.80 2218 0 Normal
05/03/2026 09 PM PDT 9.80 2218 0 Normal
05/03/2026 10 PM PDT 9.78 2203 - Normal
05/03/2026 11 PM PDT 9.80 2218 + Normal
05/04/2026 12 AM PDT 9.78 2203 - Normal
05/04/2026 01 AM PDT 9.78 2203 0 Normal
05/04/2026 02 AM PDT 9.77 2195 - Normal
05/04/2026 03 AM PDT 9.79 2210 + Normal
05/04/2026 04 AM PDT 9.79 2210 0 Normal
05/04/2026 05 AM PDT 9.78 2203 - Normal
05/04/2026 06 AM PDT 9.78 2203 0 Normal
05/04/2026 07 AM PDT 9.77 2195 - Normal
05/04/2026 08 AM PDT 9.77 2195 0 Normal
05/04/2026 09 AM PDT 9.75 2180 - Normal
05/04/2026 10 AM PDT 9.72 2158 - Normal
05/04/2026 11 AM PDT 9.69 2135 - Normal
05/04/2026 12 PM PDT 9.66 2113 - Normal
05/04/2026 01 PM PDT 9.63 2090 - Normal
05/04/2026 02 PM PDT 9.61 2076 - Normal
05/04/2026 03 PM PDT 9.58 2053 - Normal
05/04/2026 04 PM PDT 9.55 2031 - Normal
05/04/2026 05 PM PDT 9.53 2017 - Normal
05/04/2026 06 PM PDT 9.52 2009 - Normal
05/04/2026 07 PM PDT 9.50 1995 - Normal
05/04/2026 08 PM PDT 9.49 1988 - Normal
05/04/2026 09 PM PDT 9.46 1966 - Normal
05/04/2026 10 PM PDT 9.44 1951 - Normal
05/04/2026 11 PM PDT 9.45 1959 + Normal
05/05/2026 12 AM PDT 9.43 1944 - Normal
05/05/2026 01 AM PDT 9.42 1937 - Normal
05/05/2026 02 AM PDT 9.43 1944 + Normal
05/05/2026 03 AM PDT 9.42 1937 - Normal
05/05/2026 04 AM PDT 9.41 1930 - Normal
05/05/2026 05 AM PDT 9.40 1923 - Normal
05/05/2026 06 AM PDT 9.39 1916 - Normal
05/05/2026 07 AM PDT 9.39 1916 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
05/05/2026 08 AM PDT 9.38 1908 Normal
05/05/2026 09 AM PDT 9.37 1901 - Normal
05/05/2026 10 AM PDT 9.36 1894 - Normal
05/05/2026 11 AM PDT 9.36 1894 0 Normal
05/05/2026 12 PM PDT 9.35 1887 - Normal
05/05/2026 01 PM PDT 9.34 1880 - Normal
05/05/2026 02 PM PDT 9.33 1873 - Normal
05/05/2026 03 PM PDT 9.32 1866 - Normal
05/05/2026 04 PM PDT 9.31 1859 - Normal
05/05/2026 05 PM PDT 9.31 1859 0 Normal
05/05/2026 06 PM PDT 9.30 1852 - Normal
05/05/2026 07 PM PDT 9.29 1845 - Normal
05/05/2026 08 PM PDT 9.28 1838 - Normal
05/05/2026 09 PM PDT 9.28 1838 0 Normal
05/05/2026 10 PM PDT 9.27 1831 - Normal
05/05/2026 11 PM PDT 9.26 1824 - Normal
05/06/2026 12 AM PDT 9.26 1824 0 Normal
05/06/2026 01 AM PDT 9.25 1817 - Normal
05/06/2026 02 AM PDT 9.24 1810 - Normal
05/06/2026 03 AM PDT 9.23 1803 - Normal
05/06/2026 04 AM PDT 9.22 1796 - Normal
05/06/2026 05 AM PDT 9.21 1789 - Normal
05/06/2026 06 AM PDT 9.20 1782 - Normal
05/06/2026 07 AM PDT 9.19 1775 - Normal
05/06/2026 08 AM PDT 9.18 1768 - Normal
05/06/2026 09 AM PDT 9.17 1761 - Normal
05/06/2026 10 AM PDT 9.16 1754 - Normal
05/06/2026 11 AM PDT 9.14 1740 - Normal
05/06/2026 12 PM PDT 9.13 1734 - Normal
05/06/2026 01 PM PDT 9.12 1727 - Normal
05/06/2026 02 PM PDT 9.11 1720 - Normal
05/06/2026 03 PM PDT 9.10 1713 - Normal
05/06/2026 04 PM PDT 9.09 1706 - Normal
05/06/2026 05 PM PDT 9.08 1700 - Normal
05/06/2026 06 PM PDT 9.06 1686 - Normal
05/06/2026 07 PM PDT 9.05 1679 - Normal
05/06/2026 08 PM PDT 9.04 1672 - Normal
05/06/2026 09 PM PDT 9.03 1666 - Normal
05/06/2026 10 PM PDT 9.02 1659 - Normal
05/06/2026 11 PM PDT 9.01 1652 - Normal
05/07/2026 12 AM PDT 9.00 1646 - Normal
05/07/2026 01 AM PDT 8.99 1639 - Normal
05/07/2026 02 AM PDT 8.98 1632 - Normal
05/07/2026 03 AM PDT 8.98 1632 0 Normal
05/07/2026 04 AM PDT 8.97 1626 - Normal
05/07/2026 05 AM PDT 8.96 1619 - Normal
05/07/2026 06 AM PDT 8.95 1612 - Normal
05/07/2026 07 AM PDT 8.94 1606 - Normal
05/07/2026 08 AM PDT 8.93 1599 - Normal
05/07/2026 09 AM PDT 8.93 1599 0 Normal
05/07/2026 10 AM PDT 8.92 1592 - Normal
05/07/2026 11 AM PDT 8.91 1586 - Normal
05/07/2026 12 PM PDT 8.90 1579 - Normal
05/07/2026 01 PM PDT 8.90 1579 0 Normal
05/07/2026 02 PM PDT 8.89 1573 - Normal
05/07/2026 03 PM PDT 8.88 1566 - Normal
05/07/2026 04 PM PDT 8.88 1566 0 Normal
05/07/2026 05 PM PDT 8.87 1560 - Normal
05/07/2026 06 PM PDT 8.87 1560 0 Normal
05/07/2026 07 PM PDT 8.86 1553 - Normal
05/07/2026 08 PM PDT 8.86 1553 0 Normal
05/07/2026 09 PM PDT 8.85 1546 - Normal
05/07/2026 10 PM PDT 8.85 1546 0 Normal
05/07/2026 11 PM PDT 8.84 1540 - Normal
05/08/2026 12 AM PDT 8.84 1540 0 Normal
05/08/2026 01 AM PDT 8.84 1540 0 Normal
05/08/2026 02 AM PDT 8.83 1533 - Normal
05/08/2026 03 AM PDT 8.83 1533 0 Normal
05/08/2026 04 AM PDT 8.82 1527 - Normal
05/08/2026 05 AM PDT 8.82 1527 0 Normal
05/08/2026 06 AM PDT 8.81 1520 - Normal
05/08/2026 07 AM PDT 8.81 1520 0 Normal
05/08/2026 08 AM PDT 8.81 1520 0 Normal
05/08/2026 09 AM PDT 8.80 1514 - Normal
05/08/2026 10 AM PDT 8.80 1514 0 Normal
05/08/2026 11 AM PDT 8.80 1514 0 Normal
05/08/2026 12 PM PDT 8.79 1508 - Normal
05/08/2026 01 PM PDT 8.79 1508 0 Normal
05/08/2026 02 PM PDT 8.79 1508 0 Normal
05/08/2026 03 PM PDT 8.79 1508 0 Normal
05/08/2026 04 PM PDT 8.78 1501 - Normal
05/08/2026 05 PM PDT 8.78 1501 0 Normal
05/08/2026 06 PM PDT 8.78 1501 0 Normal
05/08/2026 07 PM PDT 8.78 1501 0 Normal
05/08/2026 08 PM PDT 8.77 1495 - Normal
05/08/2026 09 PM PDT 8.77 1495 0 Normal
05/08/2026 10 PM PDT 8.77 1495 0 Normal
05/08/2026 11 PM PDT 8.77 1495 0 Normal
05/09/2026 12 AM PDT 8.77 1495 0 Normal
05/09/2026 01 AM PDT 8.76 1488 - Normal
05/09/2026 02 AM PDT 8.76 1488 0 Normal
05/09/2026 03 AM PDT 8.76 1488 0 Normal
05/09/2026 04 AM PDT 8.76 1488 0 Normal
05/09/2026 05 AM PDT 8.75 1482 - Normal
05/09/2026 06 AM PDT 8.75 1482 0 Normal
05/09/2026 07 AM PDT 8.75 1482 0 Normal
05/09/2026 08 AM PDT 8.75 1482 0 Normal
05/09/2026 09 AM PDT 8.74 1475 - Normal
05/09/2026 10 AM PDT 8.74 1475 0 Normal
05/09/2026 11 AM PDT 8.74 1475 0 Normal
05/09/2026 12 PM PDT 8.74 1475 0 Normal
05/09/2026 01 PM PDT 8.73 1469 - Normal
05/09/2026 02 PM PDT 8.73 1469 0 Normal
05/09/2026 03 PM PDT 8.73 1469 0 Normal
05/09/2026 04 PM PDT 8.73 1469 0 Normal
05/09/2026 05 PM PDT 8.73 1469 0 Normal
05/09/2026 06 PM PDT 8.73 1469 0 Normal
05/09/2026 07 PM PDT 8.72 1463 - Normal
05/09/2026 08 PM PDT 8.72 1463 0 Normal
05/09/2026 09 PM PDT 8.72 1463 0 Normal
05/09/2026 10 PM PDT 8.72 1463 0 Normal
05/09/2026 11 PM PDT 8.72 1463 0 Normal
05/10/2026 12 AM PDT 8.72 1463 0 Normal
05/10/2026 01 AM PDT 8.72 1463 0 Normal
05/10/2026 02 AM PDT 8.71 1456 - Normal
05/10/2026 03 AM PDT 8.71 1456 0 Normal
05/10/2026 04 AM PDT 8.71 1456 0 Normal
05/10/2026 05 AM PDT 8.71 1456 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.
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