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 15 2026 at 1:30 PM PDTNext Issuance: Apr 16 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:  04/15/2026 at 01:30 PM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/12/2026 at 04:00 PM PDT
# Maximum Observed Stage:                       6.45 Feet
#
# Earliest Date & Time of Maximum Forecast:     04/16/2026 at 04:00 AM PDT
# Maximum Forecast Stage:                       5.90 Feet
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Trend     Observed Status
# ------------------------------------------------------------------
  04/10/2026 01 PM PDT            6.11                        Normal
  04/10/2026 02 PM PDT            6.06         -              Normal
  04/10/2026 03 PM PDT            5.93         -              Normal
  04/10/2026 04 PM PDT            5.75         -              Normal
  04/10/2026 05 PM PDT            5.52         -              Normal
  04/10/2026 06 PM PDT            5.31         -              Normal
  04/10/2026 07 PM PDT            5.09         -              Normal
  04/10/2026 08 PM PDT            4.87         -              Normal
  04/10/2026 09 PM PDT            4.66         -              Normal
  04/10/2026 10 PM PDT            4.48         -              Normal
  04/10/2026 11 PM PDT            4.32         -              Normal
  04/11/2026 12 AM PDT            4.40         +              Normal
  04/11/2026 01 AM PDT            4.67         +              Normal
  04/11/2026 02 AM PDT            4.93         +              Normal
  04/11/2026 03 AM PDT            5.23         +              Normal
  04/11/2026 04 AM PDT            5.50         +              Normal
  04/11/2026 05 AM PDT            5.72         +              Normal
  04/11/2026 06 AM PDT            5.75         +              Normal
  04/11/2026 07 AM PDT            5.69         -              Normal
  04/11/2026 08 AM PDT            5.58         -              Normal
  04/11/2026 09 AM PDT            5.42         -              Normal
  04/11/2026 10 AM PDT            5.30         -              Normal
  04/11/2026 11 AM PDT            5.28         -              Normal
  04/11/2026 12 PM PDT            5.49         +              Normal
  04/11/2026 01 PM PDT            5.72         +              Normal
  04/11/2026 02 PM PDT            5.93         +              Normal
  04/11/2026 03 PM PDT            6.07         +              Normal
  04/11/2026 04 PM PDT            6.00         -              Normal
  04/11/2026 05 PM PDT            5.86         -              Normal
  04/11/2026 06 PM PDT            5.66         -              Normal
  04/11/2026 07 PM PDT            5.47         -              Normal
  04/11/2026 08 PM PDT            5.33         -              Normal
  04/11/2026 09 PM PDT            5.15         -              Normal
  04/11/2026 10 PM PDT            4.96         -              Normal
  04/11/2026 11 PM PDT            4.78         -              Normal
  04/12/2026 12 AM PDT            4.66         -              Normal
  04/12/2026 01 AM PDT            4.88         +              Normal
  04/12/2026 02 AM PDT            5.14         +              Normal
  04/12/2026 03 AM PDT            5.44         +              Normal
  04/12/2026 04 AM PDT            5.76         +              Normal
  04/12/2026 05 AM PDT            6.05         +              Normal
  04/12/2026 06 AM PDT            6.23         +              Normal
  04/12/2026 07 AM PDT            6.20         -              Normal
  04/12/2026 08 AM PDT            6.10         -              Normal
  04/12/2026 09 AM PDT            5.93         -              Normal
  04/12/2026 10 AM PDT            5.74         -              Normal
  04/12/2026 11 AM PDT            5.57         -              Normal
  04/12/2026 12 PM PDT            5.50         -              Normal
  04/12/2026 01 PM PDT            5.71         +              Normal
  04/12/2026 02 PM PDT            6.00         +              Normal
  04/12/2026 03 PM PDT            6.28         +              Normal
  04/12/2026 04 PM PDT            6.45         +              Normal
  04/12/2026 05 PM PDT            6.41         -              Normal
  04/12/2026 06 PM PDT            6.29         -              Normal
  04/12/2026 07 PM PDT            6.10         -              Normal
  04/12/2026 08 PM PDT            5.90         -              Normal
  04/12/2026 09 PM PDT            5.68         -              Normal
  04/12/2026 10 PM PDT            5.47         -              Normal
  04/12/2026 11 PM PDT            5.27         -              Normal
  04/13/2026 12 AM PDT            5.07         -              Normal
  04/13/2026 01 AM PDT            4.94         -              Normal
  04/13/2026 02 AM PDT            5.17         +              Normal
  04/13/2026 03 AM PDT            5.46         +              Normal
  04/13/2026 04 AM PDT            5.77         +              Normal
  04/13/2026 05 AM PDT            6.05         +              Normal
  04/13/2026 06 AM PDT            6.23         +              Normal
  04/13/2026 07 AM PDT            6.21         -              Normal
  04/13/2026 08 AM PDT            6.10         -              Normal
  04/13/2026 09 AM PDT            5.94         -              Normal
  04/13/2026 10 AM PDT            5.74         -              Normal
  04/13/2026 11 AM PDT            5.55         -              Normal
  04/13/2026 12 PM PDT            5.37         -              Normal
  04/13/2026 01 PM PDT            5.26         -              Normal
  04/13/2026 02 PM PDT            5.52         +              Normal
  04/13/2026 03 PM PDT            5.80         +              Normal
  04/13/2026 04 PM PDT            6.05         +              Normal
  04/13/2026 05 PM PDT            6.23         +              Normal
  04/13/2026 06 PM PDT            6.21         -              Normal
  04/13/2026 07 PM PDT            6.08         -              Normal
  04/13/2026 08 PM PDT            5.89         -              Normal
  04/13/2026 09 PM PDT            5.67         -              Normal
  04/13/2026 10 PM PDT            5.45         -              Normal
  04/13/2026 11 PM PDT            5.24         -              Normal
  04/14/2026 12 AM PDT            5.03         -              Normal
  04/14/2026 01 AM PDT            4.85         -              Normal
  04/14/2026 02 AM PDT            4.84         -              Normal
  04/14/2026 03 AM PDT            5.16         +              Normal
  04/14/2026 04 AM PDT            5.44         +              Normal
  04/14/2026 05 AM PDT            5.73         +              Normal
  04/14/2026 06 AM PDT            6.01         +              Normal
  04/14/2026 07 AM PDT            6.08         +              Normal
  04/14/2026 08 AM PDT            6.00         -              Normal
  04/14/2026 09 AM PDT            5.82         -              Normal
  04/14/2026 10 AM PDT            5.60         -              Normal
  04/14/2026 11 AM PDT            5.38         -              Normal
  04/14/2026 12 PM PDT            5.16         -              Normal
  04/14/2026 01 PM PDT            4.95         -              Normal
  04/14/2026 02 PM PDT            4.86         -              Normal
  04/14/2026 03 PM PDT            5.20         +              Normal
  04/14/2026 04 PM PDT            5.51         +              Normal
  04/14/2026 05 PM PDT            5.81         +              Normal
  04/14/2026 06 PM PDT            6.05         +              Normal
  04/14/2026 07 PM PDT            6.05         0              Normal
  04/14/2026 08 PM PDT            5.92         -              Normal
  04/14/2026 09 PM PDT            5.71         -              Normal
  04/14/2026 10 PM PDT            5.51         -              Normal
  04/14/2026 11 PM PDT            5.29         -              Normal
  04/15/2026 12 AM PDT            5.07         -              Normal
  04/15/2026 01 AM PDT            4.86         -              Normal
  04/15/2026 02 AM PDT            4.71         -              Normal
  04/15/2026 03 AM PDT            4.97         +              Normal
  04/15/2026 04 AM PDT            5.26         +              Normal
  04/15/2026 05 AM PDT            5.57         +              Normal
  04/15/2026 06 AM PDT            5.89         +              Normal
  04/15/2026 07 AM PDT            6.10         +              Normal
  04/15/2026 08 AM PDT            6.04         -              Normal
  04/15/2026 09 AM PDT            5.87         -              Normal
  04/15/2026 10 AM PDT            5.64         -              Normal
  04/15/2026 11 AM PDT            5.40         -              Normal
  04/15/2026 12 PM PDT            5.89         +              Normal
  04/15/2026 01 PM PDT            5.88         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Trend     Forecast Status
# ------------------------------------------------------------------
  04/15/2026 02 PM PDT            5.88                        Normal
  04/15/2026 03 PM PDT            5.88         0              Normal
  04/15/2026 04 PM PDT            5.88         0              Normal
  04/15/2026 05 PM PDT            5.88         0              Normal
  04/15/2026 06 PM PDT            5.88         0              Normal
  04/15/2026 07 PM PDT            5.88         0              Normal
  04/15/2026 08 PM PDT            5.89         +              Normal
  04/15/2026 09 PM PDT            5.89         0              Normal
  04/15/2026 10 PM PDT            5.89         0              Normal
  04/15/2026 11 PM PDT            5.89         0              Normal
  04/16/2026 12 AM PDT            5.89         0              Normal
  04/16/2026 01 AM PDT            5.89         0              Normal
  04/16/2026 02 AM PDT            5.89         0              Normal
  04/16/2026 03 AM PDT            5.89         0              Normal
  04/16/2026 04 AM PDT            5.90         +              Normal
  04/16/2026 05 AM PDT            5.90         0              Normal
  04/16/2026 06 AM PDT            5.90         0              Normal
  04/16/2026 07 AM PDT            5.90         0              Normal
  04/16/2026 08 AM PDT            5.90         0              Normal
  04/16/2026 09 AM PDT            5.90         0              Normal
  04/16/2026 10 AM PDT            5.90         0              Normal
  04/16/2026 11 AM PDT            5.90         0              Normal
  04/16/2026 12 PM PDT            5.90         0              Normal
  04/16/2026 01 PM PDT            5.90         0              Normal
  04/16/2026 02 PM PDT            5.90         0              Normal
  04/16/2026 03 PM PDT            5.90         0              Normal
  04/16/2026 04 PM PDT            5.90         0              Normal
  04/16/2026 05 PM PDT            5.90         0              Normal
  04/16/2026 06 PM PDT            5.90         0              Normal
  04/16/2026 07 PM PDT            5.90         0              Normal
  04/16/2026 08 PM PDT            5.90         0              Normal
  04/16/2026 09 PM PDT            5.90         0              Normal
  04/16/2026 10 PM PDT            5.90         0              Normal
  04/16/2026 11 PM PDT            5.90         0              Normal
  04/17/2026 12 AM PDT            5.90         0              Normal
  04/17/2026 01 AM PDT            5.89         -              Normal
  04/17/2026 02 AM PDT            5.89         0              Normal
  04/17/2026 03 AM PDT            5.89         0              Normal
  04/17/2026 04 AM PDT            5.89         0              Normal
  04/17/2026 05 AM PDT            5.89         0              Normal
  04/17/2026 06 AM PDT            5.89         0              Normal
  04/17/2026 07 AM PDT            5.89         0              Normal
  04/17/2026 08 AM PDT            5.89         0              Normal
  04/17/2026 09 AM PDT            5.89         0              Normal
  04/17/2026 10 AM PDT            5.89         0              Normal
  04/17/2026 11 AM PDT            5.88         -              Normal
  04/17/2026 12 PM PDT            5.88         0              Normal
  04/17/2026 01 PM PDT            5.88         0              Normal
  04/17/2026 02 PM PDT            5.88         0              Normal
  04/17/2026 03 PM PDT            5.88         0              Normal
  04/17/2026 04 PM PDT            5.88         0              Normal
  04/17/2026 05 PM PDT            5.88         0              Normal
  04/17/2026 06 PM PDT            5.88         0              Normal
  04/17/2026 07 PM PDT            5.88         0              Normal
  04/17/2026 08 PM PDT            5.88         0              Normal
  04/17/2026 09 PM PDT            5.87         -              Normal
  04/17/2026 10 PM PDT            5.87         0              Normal
  04/17/2026 11 PM PDT            5.87         0              Normal
  04/18/2026 12 AM PDT            5.87         0              Normal
  04/18/2026 01 AM PDT            5.87         0              Normal
  04/18/2026 02 AM PDT            5.87         0              Normal
  04/18/2026 03 AM PDT            5.87         0              Normal
  04/18/2026 04 AM PDT            5.87         0              Normal
  04/18/2026 05 AM PDT            5.87         0              Normal
  04/18/2026 06 AM PDT            5.87         0              Normal
  04/18/2026 07 AM PDT            5.87         0              Normal
  04/18/2026 08 AM PDT            5.87         0              Normal
  04/18/2026 09 AM PDT            5.87         0              Normal
  04/18/2026 10 AM PDT            5.86         -              Normal
  04/18/2026 11 AM PDT            5.86         0              Normal
  04/18/2026 12 PM PDT            5.86         0              Normal
  04/18/2026 01 PM PDT            5.86         0              Normal
  04/18/2026 02 PM PDT            5.86         0              Normal
  04/18/2026 03 PM PDT            5.86         0              Normal
  04/18/2026 04 PM PDT            5.86         0              Normal
  04/18/2026 05 PM PDT            5.86         0              Normal
  04/18/2026 06 PM PDT            5.86         0              Normal
  04/18/2026 07 PM PDT            5.86         0              Normal
  04/18/2026 08 PM PDT            5.86         0              Normal
  04/18/2026 09 PM PDT            5.86         0              Normal
  04/18/2026 10 PM PDT            5.86         0              Normal
  04/18/2026 11 PM PDT            5.86         0              Normal
  04/19/2026 12 AM PDT            5.86         0              Normal
  04/19/2026 01 AM PDT            5.86         0              Normal
  04/19/2026 02 AM PDT            5.86         0              Normal
  04/19/2026 03 AM PDT            5.86         0              Normal
  04/19/2026 04 AM PDT            5.86         0              Normal
  04/19/2026 05 AM PDT            5.86         0              Normal
  04/19/2026 06 AM PDT            5.86         0              Normal
  04/19/2026 07 AM PDT            5.86         0              Normal
  04/19/2026 08 AM PDT            5.86         0              Normal
  04/19/2026 09 AM PDT            5.86         0              Normal
  04/19/2026 10 AM PDT            5.86         0              Normal
  04/19/2026 11 AM PDT            5.86         0              Normal
  04/19/2026 12 PM PDT            5.86         0              Normal
  04/19/2026 01 PM PDT            5.86         0              Normal
  04/19/2026 02 PM PDT            5.86         0              Normal
  04/19/2026 03 PM PDT            5.85         -              Normal
  04/19/2026 04 PM PDT            5.85         0              Normal
  04/19/2026 05 PM PDT            5.85         0              Normal
  04/19/2026 06 PM PDT            5.85         0              Normal
  04/19/2026 07 PM PDT            5.85         0              Normal
  04/19/2026 08 PM PDT            5.85         0              Normal
  04/19/2026 09 PM PDT            5.85         0              Normal
  04/19/2026 10 PM PDT            5.85         0              Normal
  04/19/2026 11 PM PDT            5.85         0              Normal
  04/20/2026 12 AM PDT            5.85         0              Normal
  04/20/2026 01 AM PDT            5.85         0              Normal
  04/20/2026 02 AM PDT            5.85         0              Normal
  04/20/2026 03 AM PDT            5.85         0              Normal
  04/20/2026 04 AM PDT            5.85         0              Normal
  04/20/2026 05 AM PDT            5.85         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.