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

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SAN JOAQUIN RIVER - MOSSDALE (MOSC1)
Latitude: 37.79º NLongitude: 121.31º WElevation: 32 FeetForecast Type: Official Location
Location: San Joaquin County in CaliforniaBulletin Group: San JoaquinRiver Group: San Joaquin
Issuance Time: Apr 22 2026 at 7:49 AM PDTNext Issuance: Apr 23 2026 at 9:00 AM PDT
Action/Monitor: 19.5 FeetMinor Flood: 28.5 FeetModerate Flood: 32.1 FeetMajor Flood: 33.1 Feet


# Tabular Observed and Forecast Hydrograph Information
#
# Location: San Joaquin River - Mossdale (MOSC1)
#
# File Generation Time:  04/22/2026 at 07:49 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/21/2026 at 10:00 AM PDT
# Maximum Observed Stage:                       7.44 Feet
#
# Earliest Date & Time of Maximum Forecast:     04/23/2026 at 06:00 AM PDT
# Maximum Forecast Stage:                       6.02 Feet
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Trend     Observed Status
# ------------------------------------------------------------------
  04/17/2026 07 AM PDT            6.04                        Normal
  04/17/2026 08 AM PDT            6.28         +              Normal
  04/17/2026 09 AM PDT            6.20         -              Normal
  04/17/2026 10 AM PDT            6.00         -              Normal
  04/17/2026 11 AM PDT            5.76         -              Normal
  04/17/2026 12 PM PDT            5.51         -              Normal
  04/17/2026 01 PM PDT            5.25         -              Normal
  04/17/2026 02 PM PDT            5.00         -              Normal
  04/17/2026 03 PM PDT            4.76         -              Normal
  04/17/2026 04 PM PDT            4.53         -              Normal
  04/17/2026 05 PM PDT            4.53         0              Normal
  04/17/2026 06 PM PDT            4.86         +              Normal
  04/17/2026 07 PM PDT            5.13         +              Normal
  04/17/2026 08 PM PDT            5.42         +              Normal
  04/17/2026 09 PM PDT            5.63         +              Normal
  04/17/2026 10 PM PDT            5.61         -              Normal
  04/17/2026 11 PM PDT            5.46         -              Normal
  04/18/2026 12 AM PDT            5.26         -              Normal
  04/18/2026 01 AM PDT            5.05         -              Normal
  04/18/2026 02 AM PDT            4.84         -              Normal
  04/18/2026 03 AM PDT            4.65         -              Normal
  04/18/2026 04 AM PDT            4.89         +              Normal
  04/18/2026 05 AM PDT            5.26         +              Normal
  04/18/2026 06 AM PDT            5.63         +              Normal
  04/18/2026 07 AM PDT            5.99         +              Normal
  04/18/2026 08 AM PDT            6.36         +              Normal
  04/18/2026 09 AM PDT            6.48         +              Normal
  04/18/2026 10 AM PDT            6.34         -              Normal
  04/18/2026 11 AM PDT            6.09         -              Normal
  04/18/2026 12 PM PDT            5.83         -              Normal
  04/18/2026 01 PM PDT            5.56         -              Normal
  04/18/2026 02 PM PDT            5.30         -              Normal
  04/18/2026 03 PM PDT            5.05         -              Normal
  04/18/2026 04 PM PDT            4.79         -              Normal
  04/18/2026 05 PM PDT            4.57         -              Normal
  04/18/2026 06 PM PDT            4.63         +              Normal
  04/18/2026 07 PM PDT            4.95         +              Normal
  04/18/2026 08 PM PDT            5.24         +              Normal
  04/18/2026 09 PM PDT            5.51         +              Normal
  04/18/2026 10 PM PDT            5.74         +              Normal
  04/18/2026 11 PM PDT            5.71         -              Normal
  04/19/2026 12 AM PDT            5.57         -              Normal
  04/19/2026 01 AM PDT            5.39         -              Normal
  04/19/2026 02 AM PDT            5.19         -              Normal
  04/19/2026 03 AM PDT            5.00         -              Normal
  04/19/2026 04 AM PDT            5.01         +              Normal
  04/19/2026 05 AM PDT            5.42         +              Normal
  04/19/2026 06 AM PDT            5.79         +              Normal
  04/19/2026 07 AM PDT            6.18         +              Normal
  04/19/2026 08 AM PDT            6.58         +              Normal
  04/19/2026 09 AM PDT            6.90         +              Normal
  04/19/2026 10 AM PDT            6.88         -              Normal
  04/19/2026 11 AM PDT            6.70         -              Normal
  04/19/2026 12 PM PDT            6.45         -              Normal
  04/19/2026 01 PM PDT            6.19         -              Normal
  04/19/2026 02 PM PDT            5.93         -              Normal
  04/19/2026 03 PM PDT            5.68         -              Normal
  04/19/2026 04 PM PDT            5.43         -              Normal
  04/19/2026 05 PM PDT            5.19         -              Normal
  04/19/2026 06 PM PDT            4.99         -              Normal
  04/19/2026 07 PM PDT            5.09         +              Normal
  04/19/2026 08 PM PDT            5.43         +              Normal
  04/19/2026 09 PM PDT            5.68         +              Normal
  04/19/2026 10 PM PDT            5.95         +              Normal
  04/19/2026 11 PM PDT            6.17         +              Normal
  04/20/2026 12 AM PDT            6.17         0              Normal
  04/20/2026 01 AM PDT            6.06         -              Normal
  04/20/2026 02 AM PDT            5.88         -              Normal
  04/20/2026 03 AM PDT            5.70         -              Normal
  04/20/2026 04 AM PDT            5.55         -              Normal
  04/20/2026 05 AM PDT            5.73         +              Normal
  04/20/2026 06 AM PDT            6.11         +              Normal
  04/20/2026 07 AM PDT            6.48         +              Normal
  04/20/2026 08 AM PDT            6.86         +              Normal
  04/20/2026 09 AM PDT            7.22         +              Normal
  04/20/2026 10 AM PDT            7.37         +              Normal
  04/20/2026 11 AM PDT            7.23         -              Normal
  04/20/2026 12 PM PDT            7.00         -              Normal
  04/20/2026 01 PM PDT            6.76         -              Normal
  04/20/2026 02 PM PDT            6.46         -              Normal
  04/20/2026 03 PM PDT            6.18         -              Normal
  04/20/2026 04 PM PDT            5.94         -              Normal
  04/20/2026 05 PM PDT            5.68         -              Normal
  04/20/2026 06 PM PDT            5.43         -              Normal
  04/20/2026 07 PM PDT            5.23         -              Normal
  04/20/2026 08 PM PDT            5.30         +              Normal
  04/20/2026 09 PM PDT            5.58         +              Normal
  04/20/2026 10 PM PDT            5.83         +              Normal
  04/20/2026 11 PM PDT            6.11         +              Normal
  04/21/2026 12 AM PDT            6.32         +              Normal
  04/21/2026 01 AM PDT            6.33         +              Normal
  04/21/2026 02 AM PDT            6.27         -              Normal
  04/21/2026 03 AM PDT            6.13         -              Normal
  04/21/2026 04 AM PDT            5.95         -              Normal
  04/21/2026 05 AM PDT            5.82         -              Normal
  04/21/2026 06 AM PDT            6.00         +              Normal
  04/21/2026 07 AM PDT            6.39         +              Normal
  04/21/2026 08 AM PDT            6.76         +              Normal
  04/21/2026 09 AM PDT            7.13         +              Normal
  04/21/2026 10 AM PDT            7.44         +              Normal
  04/21/2026 11 AM PDT            5.94         -              Normal
  04/21/2026 12 PM PDT            5.94         0              Normal
  04/21/2026 01 PM PDT            7.13         +              Normal
  04/21/2026 02 PM PDT            6.89         -              Normal
  04/21/2026 03 PM PDT            6.67         -              Normal
  04/21/2026 04 PM PDT            6.41         -              Normal
  04/21/2026 05 PM PDT            6.16         -              Normal
  04/21/2026 06 PM PDT            5.91         -              Normal
  04/21/2026 07 PM PDT            5.69         -              Normal
  04/21/2026 08 PM PDT            5.49         -              Normal
  04/21/2026 09 PM PDT            5.53         +              Normal
  04/21/2026 10 PM PDT            5.78         +              Normal
  04/21/2026 11 PM PDT            6.01         +              Normal
  04/22/2026 12 AM PDT            6.25         +              Normal
  04/22/2026 01 AM PDT            6.42         +              Normal
  04/22/2026 02 AM PDT            6.43         +              Normal
  04/22/2026 03 AM PDT            6.37         -              Normal
  04/22/2026 04 AM PDT            6.24         -              Normal
  04/22/2026 05 AM PDT            6.09         -              Normal
  04/22/2026 06 AM PDT            5.99         -              Normal
  04/22/2026 07 AM PDT            5.99         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Trend     Forecast Status
# ------------------------------------------------------------------
  04/22/2026 08 AM PDT            5.99                        Normal
  04/22/2026 09 AM PDT            5.99         0              Normal
  04/22/2026 10 AM PDT            5.99         0              Normal
  04/22/2026 11 AM PDT            5.99         0              Normal
  04/22/2026 12 PM PDT            5.99         0              Normal
  04/22/2026 01 PM PDT            5.99         0              Normal
  04/22/2026 02 PM PDT            5.99         0              Normal
  04/22/2026 03 PM PDT            5.99         0              Normal
  04/22/2026 04 PM PDT            5.99         0              Normal
  04/22/2026 05 PM PDT            6.00         +              Normal
  04/22/2026 06 PM PDT            6.00         0              Normal
  04/22/2026 07 PM PDT            6.00         0              Normal
  04/22/2026 08 PM PDT            6.00         0              Normal
  04/22/2026 09 PM PDT            6.00         0              Normal
  04/22/2026 10 PM PDT            6.00         0              Normal
  04/22/2026 11 PM PDT            6.00         0              Normal
  04/23/2026 12 AM PDT            6.00         0              Normal
  04/23/2026 01 AM PDT            6.01         +              Normal
  04/23/2026 02 AM PDT            6.01         0              Normal
  04/23/2026 03 AM PDT            6.01         0              Normal
  04/23/2026 04 AM PDT            6.01         0              Normal
  04/23/2026 05 AM PDT            6.01         0              Normal
  04/23/2026 06 AM PDT            6.02         +              Normal
  04/23/2026 07 AM PDT            6.02         0              Normal
  04/23/2026 08 AM PDT            6.02         0              Normal
  04/23/2026 09 AM PDT            6.02         0              Normal
  04/23/2026 10 AM PDT            6.02         0              Normal
  04/23/2026 11 AM PDT            6.02         0              Normal
  04/23/2026 12 PM PDT            6.02         0              Normal
  04/23/2026 01 PM PDT            6.02         0              Normal
  04/23/2026 02 PM PDT            6.02         0              Normal
  04/23/2026 03 PM PDT            6.02         0              Normal
  04/23/2026 04 PM PDT            6.01         -              Normal
  04/23/2026 05 PM PDT            6.01         0              Normal
  04/23/2026 06 PM PDT            6.01         0              Normal
  04/23/2026 07 PM PDT            6.01         0              Normal
  04/23/2026 08 PM PDT            6.00         -              Normal
  04/23/2026 09 PM PDT            6.00         0              Normal
  04/23/2026 10 PM PDT            6.00         0              Normal
  04/23/2026 11 PM PDT            6.00         0              Normal
  04/24/2026 12 AM PDT            6.00         0              Normal
  04/24/2026 01 AM PDT            6.00         0              Normal
  04/24/2026 02 AM PDT            6.00         0              Normal
  04/24/2026 03 AM PDT            5.99         -              Normal
  04/24/2026 04 AM PDT            5.99         0              Normal
  04/24/2026 05 AM PDT            5.99         0              Normal
  04/24/2026 06 AM PDT            5.99         0              Normal
  04/24/2026 07 AM PDT            5.99         0              Normal
  04/24/2026 08 AM PDT            5.99         0              Normal
  04/24/2026 09 AM PDT            5.99         0              Normal
  04/24/2026 10 AM PDT            5.99         0              Normal
  04/24/2026 11 AM PDT            5.99         0              Normal
  04/24/2026 12 PM PDT            5.99         0              Normal
  04/24/2026 01 PM PDT            5.99         0              Normal
  04/24/2026 02 PM PDT            5.99         0              Normal
  04/24/2026 03 PM PDT            5.99         0              Normal
  04/24/2026 04 PM PDT            5.99         0              Normal
  04/24/2026 05 PM PDT            5.99         0              Normal
  04/24/2026 06 PM PDT            5.99         0              Normal
  04/24/2026 07 PM PDT            5.99         0              Normal
  04/24/2026 08 PM PDT            5.99         0              Normal
  04/24/2026 09 PM PDT            5.99         0              Normal
  04/24/2026 10 PM PDT            5.99         0              Normal
  04/24/2026 11 PM PDT            5.98         -              Normal
  04/25/2026 12 AM PDT            5.98         0              Normal
  04/25/2026 01 AM PDT            5.98         0              Normal
  04/25/2026 02 AM PDT            5.98         0              Normal
  04/25/2026 03 AM PDT            5.98         0              Normal
  04/25/2026 04 AM PDT            5.98         0              Normal
  04/25/2026 05 AM PDT            5.98         0              Normal
  04/25/2026 06 AM PDT            5.98         0              Normal
  04/25/2026 07 AM PDT            5.98         0              Normal
  04/25/2026 08 AM PDT            5.98         0              Normal
  04/25/2026 09 AM PDT            5.98         0              Normal
  04/25/2026 10 AM PDT            5.98         0              Normal
  04/25/2026 11 AM PDT            5.98         0              Normal
  04/25/2026 12 PM PDT            5.98         0              Normal
  04/25/2026 01 PM PDT            5.98         0              Normal
  04/25/2026 02 PM PDT            5.98         0              Normal
  04/25/2026 03 PM PDT            5.98         0              Normal
  04/25/2026 04 PM PDT            5.98         0              Normal
  04/25/2026 05 PM PDT            5.98         0              Normal
  04/25/2026 06 PM PDT            5.99         +              Normal
  04/25/2026 07 PM PDT            5.99         0              Normal
  04/25/2026 08 PM PDT            5.99         0              Normal
  04/25/2026 09 PM PDT            5.99         0              Normal
  04/25/2026 10 PM PDT            5.99         0              Normal
  04/25/2026 11 PM PDT            5.99         0              Normal
  04/26/2026 12 AM PDT            5.99         0              Normal
  04/26/2026 01 AM PDT            5.99         0              Normal
  04/26/2026 02 AM PDT            5.99         0              Normal
  04/26/2026 03 AM PDT            6.00         +              Normal
  04/26/2026 04 AM PDT            6.00         0              Normal
  04/26/2026 05 AM PDT            6.00         0              Normal
  04/26/2026 06 AM PDT            6.00         0              Normal
  04/26/2026 07 AM PDT            6.00         0              Normal
  04/26/2026 08 AM PDT            6.00         0              Normal
  04/26/2026 09 AM PDT            6.00         0              Normal
  04/26/2026 10 AM PDT            6.00         0              Normal
  04/26/2026 11 AM PDT            6.00         0              Normal
  04/26/2026 12 PM PDT            6.00         0              Normal
  04/26/2026 01 PM PDT            6.00         0              Normal
  04/26/2026 02 PM PDT            6.00         0              Normal
  04/26/2026 03 PM PDT            6.00         0              Normal
  04/26/2026 04 PM PDT            6.00         0              Normal
  04/26/2026 05 PM PDT            6.00         0              Normal
  04/26/2026 06 PM PDT            6.00         0              Normal
  04/26/2026 07 PM PDT            6.00         0              Normal
  04/26/2026 08 PM PDT            6.00         0              Normal
  04/26/2026 09 PM PDT            6.01         +              Normal
  04/26/2026 10 PM PDT            6.01         0              Normal
  04/26/2026 11 PM PDT            6.01         0              Normal
  04/27/2026 12 AM PDT            6.01         0              Normal
  04/27/2026 01 AM PDT            6.01         0              Normal
  04/27/2026 02 AM PDT            6.01         0              Normal
  04/27/2026 03 AM PDT            6.01         0              Normal
  04/27/2026 04 AM PDT            6.01         0              Normal
  04/27/2026 05 AM PDT            6.01         0              Normal
#
# NOTE 1: Stages are rounded to the nearest hundredth (.01) of a foot.
# NOTE 2: Trends are determined using hourly change in unrounded stage.
# NOTE 3: Maximum Values are determined using unrounded stage.