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

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TUOLUMNE RIVER - MODESTO (MDSC1)
Latitude: 37.63º NLongitude: 120.99º WElevation: 60 FeetForecast Type: Official Location
Location: Stanislaus County in CaliforniaBulletin Group: San JoaquinRiver Group: San Joaquin
Issuance Time: Jun 08 2026 at 6:55 AM PDTNext Issuance: Jun 09 2026 at 9:00 AM PDT
Action/Monitor: 50.5 FeetMinor Flood: 55.0 FeetModerate Flood: 66.0 FeetMajor Flood: 67.0 Feet


# Tabular Observed and Forecast Hydrograph Information
#
# Location: Tuolumne River - Modesto (MDSC1)
#
# File Generation Time:  06/08/2026 at 06:55 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  06/03/2026 at 06:00 AM PDT
# Maximum Observed Stage:                       36.53 Feet
# Maximum Observed Flow:                        126 cfs
#
# Earliest Date & Time of Maximum Forecast:     06/10/2026 at 09:00 PM PDT
# Maximum Forecast Stage:                       36.42 Feet
# Maximum Forecast Flow:                        105 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  06/03/2026 06 AM PDT           36.53            126                        Normal
  06/03/2026 07 AM PDT           36.52            124         -              Normal
  06/03/2026 08 AM PDT           36.51            122         -              Normal
  06/03/2026 09 AM PDT           36.51            122         0              Normal
  06/03/2026 10 AM PDT           36.50            120         -              Normal
  06/03/2026 11 AM PDT           36.49            118         -              Normal
  06/03/2026 12 PM PDT           36.48            117         -              Normal
  06/03/2026 01 PM PDT           36.46            113         -              Normal
  06/03/2026 02 PM PDT           36.45            111         -              Normal
  06/03/2026 03 PM PDT           36.44            109         -              Normal
  06/03/2026 04 PM PDT           36.42            105         -              Normal
  06/03/2026 05 PM PDT           36.41            104         -              Normal
  06/03/2026 06 PM PDT           36.40            102         -              Normal
  06/03/2026 07 PM PDT           36.39            100         -              Normal
  06/03/2026 08 PM PDT           36.40            102         +              Normal
  06/03/2026 09 PM PDT           36.38             98         -              Normal
  06/03/2026 10 PM PDT           36.37             96         -              Normal
  06/03/2026 11 PM PDT           36.36             95         -              Normal
  06/04/2026 12 AM PDT           36.35             93         -              Normal
  06/04/2026 01 AM PDT           36.34             91         -              Normal
  06/04/2026 02 AM PDT           36.34             91         0              Normal
  06/04/2026 03 AM PDT           36.34             91         0              Normal
  06/04/2026 04 AM PDT           36.34             91         0              Normal
  06/04/2026 05 AM PDT           36.34             91         0              Normal
  06/04/2026 06 AM PDT           36.34             91         0              Normal
  06/04/2026 07 AM PDT           36.33             89         -              Normal
  06/04/2026 08 AM PDT           36.33             89         0              Normal
  06/04/2026 09 AM PDT           36.33             89         0              Normal
  06/04/2026 10 AM PDT           36.33             89         0              Normal
  06/04/2026 11 AM PDT           36.33             89         0              Normal
  06/04/2026 12 PM PDT           36.38             98         +              Normal
  06/04/2026 01 PM PDT           36.39            100         +              Normal
  06/04/2026 02 PM PDT           36.38             98         -              Normal
  06/04/2026 03 PM PDT           36.37             96         -              Normal
  06/04/2026 04 PM PDT           36.36             95         -              Normal
  06/04/2026 05 PM PDT           36.34             91         -              Normal
  06/04/2026 06 PM PDT           36.33             89         -              Normal
  06/04/2026 07 PM PDT           36.32             88         -              Normal
  06/04/2026 08 PM PDT           36.31             86         -              Normal
  06/04/2026 09 PM PDT           36.31             86         0              Normal
  06/04/2026 10 PM PDT           36.31             86         0              Normal
  06/04/2026 11 PM PDT           36.31             86         0              Normal
  06/05/2026 12 AM PDT           36.30             84         -              Normal
  06/05/2026 01 AM PDT           36.30             84         0              Normal
  06/05/2026 02 AM PDT           36.30             84         0              Normal
  06/05/2026 03 AM PDT           36.31             86         +              Normal
  06/05/2026 04 AM PDT           36.34             91         +              Normal
  06/05/2026 05 AM PDT           36.37             96         +              Normal
  06/05/2026 06 AM PDT           36.41            104         +              Normal
  06/05/2026 07 AM PDT           36.43            107         +              Normal
  06/05/2026 08 AM PDT           36.44            109         +              Normal
  06/05/2026 09 AM PDT           36.44            109         0              Normal
  06/05/2026 10 AM PDT           36.43            107         -              Normal
  06/05/2026 11 AM PDT           36.43            107         0              Normal
  06/05/2026 12 PM PDT           36.43            107         0              Normal
  06/05/2026 01 PM PDT           36.41            104         -              Normal
  06/05/2026 02 PM PDT           36.40            102         -              Normal
  06/05/2026 03 PM PDT           36.39            100         -              Normal
  06/05/2026 04 PM PDT           36.38             98         -              Normal
  06/05/2026 05 PM PDT           36.36             95         -              Normal
  06/05/2026 06 PM PDT           36.35             93         -              Normal
  06/05/2026 07 PM PDT           36.34             91         -              Normal
  06/05/2026 08 PM PDT           36.34             91         0              Normal
  06/05/2026 09 PM PDT           36.34             91         0              Normal
  06/05/2026 10 PM PDT           36.33             89         -              Normal
  06/05/2026 11 PM PDT           36.33             89         0              Normal
  06/06/2026 12 AM PDT           36.32             88         -              Normal
  06/06/2026 01 AM PDT           36.31             86         -              Normal
  06/06/2026 02 AM PDT           36.31             86         0              Normal
  06/06/2026 03 AM PDT           36.30             84         -              Normal
  06/06/2026 04 AM PDT           36.30             84         0              Normal
  06/06/2026 05 AM PDT           36.32             88         +              Normal
  06/06/2026 06 AM PDT           36.33             89         +              Normal
  06/06/2026 07 AM PDT           36.36             95         +              Normal
  06/06/2026 08 AM PDT           36.38             98         +              Normal
  06/06/2026 09 AM PDT           36.40            102         +              Normal
  06/06/2026 10 AM PDT           36.41            104         +              Normal
  06/06/2026 11 AM PDT           36.40            102         -              Normal
  06/06/2026 12 PM PDT           36.39            100         -              Normal
  06/06/2026 01 PM PDT           36.37             96         -              Normal
  06/06/2026 02 PM PDT           36.37             96         0              Normal
  06/06/2026 03 PM PDT           36.36             95         -              Normal
  06/06/2026 04 PM PDT           36.35             93         -              Normal
  06/06/2026 05 PM PDT           36.35             93         0              Normal
  06/06/2026 06 PM PDT           36.35             93         0              Normal
  06/06/2026 07 PM PDT           36.36             95         +              Normal
  06/06/2026 08 PM PDT           36.37             96         +              Normal
  06/06/2026 09 PM PDT           36.37             96         0              Normal
  06/06/2026 10 PM PDT           36.36             95         -              Normal
  06/06/2026 11 PM PDT           36.34             91         -              Normal
  06/07/2026 12 AM PDT           36.33             89         -              Normal
  06/07/2026 01 AM PDT           36.32             88         -              Normal
  06/07/2026 02 AM PDT           36.32             88         0              Normal
  06/07/2026 03 AM PDT           36.32             88         0              Normal
  06/07/2026 04 AM PDT           36.33             89         +              Normal
  06/07/2026 05 AM PDT           36.36             95         +              Normal
  06/07/2026 06 AM PDT           36.38             98         +              Normal
  06/07/2026 07 AM PDT           36.40            102         +              Normal
  06/07/2026 08 AM PDT           36.42            105         +              Normal
  06/07/2026 09 AM PDT           36.44            109         +              Normal
  06/07/2026 10 AM PDT           36.45            111         +              Normal
  06/07/2026 11 AM PDT           36.46            113         +              Normal
  06/07/2026 12 PM PDT           36.46            113         0              Normal
  06/07/2026 01 PM PDT           36.45            111         -              Normal
  06/07/2026 02 PM PDT           36.45            111         0              Normal
  06/07/2026 03 PM PDT           36.43            107         -              Normal
  06/07/2026 04 PM PDT           36.42            105         -              Normal
  06/07/2026 05 PM PDT           36.41            104         -              Normal
  06/07/2026 06 PM PDT           36.40            102         -              Normal
  06/07/2026 07 PM PDT           36.42            105         +              Normal
  06/07/2026 08 PM PDT           36.44            109         +              Normal
  06/07/2026 09 PM PDT           36.46            113         +              Normal
  06/07/2026 10 PM PDT           36.46            113         0              Normal
  06/07/2026 11 PM PDT           36.45            111         -              Normal
  06/08/2026 12 AM PDT           36.44            109         -              Normal
  06/08/2026 01 AM PDT           36.43            107         -              Normal
  06/08/2026 02 AM PDT           36.42            105         -              Normal
  06/08/2026 03 AM PDT           36.41            104         -              Normal
  06/08/2026 04 AM PDT           36.41            104         0              Normal
  06/08/2026 05 AM PDT           36.41            104         0              Normal
  06/08/2026 06 AM PDT           36.41            104         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  06/08/2026 07 AM PDT           36.41            104                        Normal
  06/08/2026 08 AM PDT           36.41            104         0              Normal
  06/08/2026 09 AM PDT           36.41            104         0              Normal
  06/08/2026 10 AM PDT           36.41            104         0              Normal
  06/08/2026 11 AM PDT           36.41            104         0              Normal
  06/08/2026 12 PM PDT           36.41            104         0              Normal
  06/08/2026 01 PM PDT           36.41            104         0              Normal
  06/08/2026 02 PM PDT           36.41            104         0              Normal
  06/08/2026 03 PM PDT           36.41            104         0              Normal
  06/08/2026 04 PM PDT           36.41            104         0              Normal
  06/08/2026 05 PM PDT           36.41            104         0              Normal
  06/08/2026 06 PM PDT           36.41            104         0              Normal
  06/08/2026 07 PM PDT           36.41            104         0              Normal
  06/08/2026 08 PM PDT           36.41            104         0              Normal
  06/08/2026 09 PM PDT           36.41            104         0              Normal
  06/08/2026 10 PM PDT           36.41            104         0              Normal
  06/08/2026 11 PM PDT           36.41            104         0              Normal
  06/09/2026 12 AM PDT           36.41            104         0              Normal
  06/09/2026 01 AM PDT           36.41            104         0              Normal
  06/09/2026 02 AM PDT           36.41            104         0              Normal
  06/09/2026 03 AM PDT           36.41            104         0              Normal
  06/09/2026 04 AM PDT           36.41            104         0              Normal
  06/09/2026 05 AM PDT           36.41            104         0              Normal
  06/09/2026 06 AM PDT           36.41            104         0              Normal
  06/09/2026 07 AM PDT           36.41            104         0              Normal
  06/09/2026 08 AM PDT           36.41            104         0              Normal
  06/09/2026 09 AM PDT           36.41            104         0              Normal
  06/09/2026 10 AM PDT           36.41            104         0              Normal
  06/09/2026 11 AM PDT           36.41            104         0              Normal
  06/09/2026 12 PM PDT           36.41            104         0              Normal
  06/09/2026 01 PM PDT           36.41            104         0              Normal
  06/09/2026 02 PM PDT           36.41            104         0              Normal
  06/09/2026 03 PM PDT           36.41            104         0              Normal
  06/09/2026 04 PM PDT           36.41            104         0              Normal
  06/09/2026 05 PM PDT           36.41            104         0              Normal
  06/09/2026 06 PM PDT           36.41            104         0              Normal
  06/09/2026 07 PM PDT           36.41            104         0              Normal
  06/09/2026 08 PM PDT           36.41            104         0              Normal
  06/09/2026 09 PM PDT           36.41            104         0              Normal
  06/09/2026 10 PM PDT           36.41            104         0              Normal
  06/09/2026 11 PM PDT           36.41            104         0              Normal
  06/10/2026 12 AM PDT           36.41            104         0              Normal
  06/10/2026 01 AM PDT           36.41            104         0              Normal
  06/10/2026 02 AM PDT           36.41            104         0              Normal
  06/10/2026 03 AM PDT           36.41            104         0              Normal
  06/10/2026 04 AM PDT           36.41            104         0              Normal
  06/10/2026 05 AM PDT           36.41            104         0              Normal
  06/10/2026 06 AM PDT           36.41            104         0              Normal
  06/10/2026 07 AM PDT           36.41            104         0              Normal
  06/10/2026 08 AM PDT           36.41            104         0              Normal
  06/10/2026 09 AM PDT           36.41            104         0              Normal
  06/10/2026 10 AM PDT           36.41            104         0              Normal
  06/10/2026 11 AM PDT           36.41            104         0              Normal
  06/10/2026 12 PM PDT           36.41            104         0              Normal
  06/10/2026 01 PM PDT           36.41            104         0              Normal
  06/10/2026 02 PM PDT           36.41            104         0              Normal
  06/10/2026 03 PM PDT           36.41            104         0              Normal
  06/10/2026 04 PM PDT           36.41            104         0              Normal
  06/10/2026 05 PM PDT           36.41            104         0              Normal
  06/10/2026 06 PM PDT           36.41            104         0              Normal
  06/10/2026 07 PM PDT           36.41            104         0              Normal
  06/10/2026 08 PM PDT           36.41            104         0              Normal
  06/10/2026 09 PM PDT           36.42            105         +              Normal
  06/10/2026 10 PM PDT           36.42            105         0              Normal
  06/10/2026 11 PM PDT           36.42            105         0              Normal
  06/11/2026 12 AM PDT           36.42            105         0              Normal
  06/11/2026 01 AM PDT           36.42            105         0              Normal
  06/11/2026 02 AM PDT           36.42            105         0              Normal
  06/11/2026 03 AM PDT           36.42            105         0              Normal
  06/11/2026 04 AM PDT           36.42            105         0              Normal
  06/11/2026 05 AM PDT           36.42            105         0              Normal
  06/11/2026 06 AM PDT           36.42            105         0              Normal
  06/11/2026 07 AM PDT           36.42            105         0              Normal
  06/11/2026 08 AM PDT           36.42            105         0              Normal
  06/11/2026 09 AM PDT           36.42            105         0              Normal
  06/11/2026 10 AM PDT           36.42            105         0              Normal
  06/11/2026 11 AM PDT           36.42            105         0              Normal
  06/11/2026 12 PM PDT           36.42            105         0              Normal
  06/11/2026 01 PM PDT           36.42            105         0              Normal
  06/11/2026 02 PM PDT           36.42            105         0              Normal
  06/11/2026 03 PM PDT           36.42            105         0              Normal
  06/11/2026 04 PM PDT           36.42            105         0              Normal
  06/11/2026 05 PM PDT           36.42            105         0              Normal
  06/11/2026 06 PM PDT           36.42            105         0              Normal
  06/11/2026 07 PM PDT           36.42            105         0              Normal
  06/11/2026 08 PM PDT           36.42            105         0              Normal
  06/11/2026 09 PM PDT           36.42            105         0              Normal
  06/11/2026 10 PM PDT           36.42            105         0              Normal
  06/11/2026 11 PM PDT           36.42            105         0              Normal
  06/12/2026 12 AM PDT           36.42            105         0              Normal
  06/12/2026 01 AM PDT           36.42            105         0              Normal
  06/12/2026 02 AM PDT           36.42            105         0              Normal
  06/12/2026 03 AM PDT           36.42            105         0              Normal
  06/12/2026 04 AM PDT           36.42            105         0              Normal
  06/12/2026 05 AM PDT           36.42            105         0              Normal
  06/12/2026 06 AM PDT           36.42            105         0              Normal
  06/12/2026 07 AM PDT           36.42            105         0              Normal
  06/12/2026 08 AM PDT           36.42            105         0              Normal
  06/12/2026 09 AM PDT           36.42            105         0              Normal
  06/12/2026 10 AM PDT           36.42            105         0              Normal
  06/12/2026 11 AM PDT           36.42            105         0              Normal
  06/12/2026 12 PM PDT           36.42            105         0              Normal
  06/12/2026 01 PM PDT           36.42            105         0              Normal
  06/12/2026 02 PM PDT           36.42            105         0              Normal
  06/12/2026 03 PM PDT           36.42            105         0              Normal
  06/12/2026 04 PM PDT           36.42            105         0              Normal
  06/12/2026 05 PM PDT           36.42            105         0              Normal
  06/12/2026 06 PM PDT           36.42            105         0              Normal
  06/12/2026 07 PM PDT           36.42            105         0              Normal
  06/12/2026 08 PM PDT           36.42            105         0              Normal
  06/12/2026 09 PM PDT           36.42            105         0              Normal
  06/12/2026 10 PM PDT           36.42            105         0              Normal
  06/12/2026 11 PM PDT           36.42            105         0              Normal
  06/13/2026 12 AM PDT           36.42            105         0              Normal
  06/13/2026 01 AM PDT           36.42            105         0              Normal
  06/13/2026 02 AM PDT           36.42            105         0              Normal
  06/13/2026 03 AM PDT           36.42            105         0              Normal
  06/13/2026 04 AM PDT           36.42            105         0              Normal
  06/13/2026 05 AM PDT           36.42            105         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.