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 Feet
Location: Stanislaus County in CaliforniaBulletin Group: San JoaquinRiver Group: San Joaquin
Issuance Time: Jul 09 2025 at 7:48 AM PDTNext Issuance: Jul 10 2025 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:  07/09/2025 at 07:48 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  07/06/2025 at 06:00 PM PDT
# Maximum Observed Stage:                       36.76 Feet
# Maximum Observed Flow:                        131 cfs
#
# Earliest Date & Time of Maximum Forecast:     07/11/2025 at 11:00 PM PDT
# Maximum Forecast Stage:                       36.62 Feet
# Maximum Forecast Flow:                        102 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  07/04/2025 07 AM PDT           36.61            100                        Normal
  07/04/2025 08 AM PDT           36.63            104         +              Normal
  07/04/2025 09 AM PDT           36.64            105         +              Normal
  07/04/2025 10 AM PDT           36.65            107         +              Normal
  07/04/2025 11 AM PDT           36.65            107         0              Normal
  07/04/2025 12 PM PDT           36.64            105         -              Normal
  07/04/2025 01 PM PDT           36.64            105         0              Normal
  07/04/2025 02 PM PDT           36.63            104         -              Normal
  07/04/2025 03 PM PDT           36.61            100         -              Normal
  07/04/2025 04 PM PDT           36.61            100         0              Normal
  07/04/2025 05 PM PDT           36.59             96         -              Normal
  07/04/2025 06 PM PDT           36.60             98         +              Normal
  07/04/2025 07 PM PDT           36.62            102         +              Normal
  07/04/2025 08 PM PDT           36.62            102         0              Normal
  07/04/2025 09 PM PDT           36.62            102         0              Normal
  07/04/2025 10 PM PDT           36.62            102         0              Normal
  07/04/2025 11 PM PDT           36.62            102         0              Normal
  07/05/2025 12 AM PDT           36.60             98         -              Normal
  07/05/2025 01 AM PDT           36.59             96         -              Normal
  07/05/2025 02 AM PDT           36.58             95         -              Normal
  07/05/2025 03 AM PDT           36.57             93         -              Normal
  07/05/2025 04 AM PDT           36.56             91         -              Normal
  07/05/2025 05 AM PDT           36.56             91         0              Normal
  07/05/2025 06 AM PDT           36.57             93         +              Normal
  07/05/2025 07 AM PDT           36.58             95         +              Normal
  07/05/2025 08 AM PDT           36.60             98         +              Normal
  07/05/2025 09 AM PDT           36.62            102         +              Normal
  07/05/2025 10 AM PDT           36.63            104         +              Normal
  07/05/2025 11 AM PDT           36.63            104         0              Normal
  07/05/2025 12 PM PDT           36.64            105         +              Normal
  07/05/2025 01 PM PDT           36.64            105         0              Normal
  07/05/2025 02 PM PDT           36.63            104         -              Normal
  07/05/2025 03 PM PDT           36.62            102         -              Normal
  07/05/2025 04 PM PDT           36.63            104         +              Normal
  07/05/2025 05 PM PDT           36.63            104         0              Normal
  07/05/2025 06 PM PDT           36.62            102         -              Normal
  07/05/2025 07 PM PDT           36.61            100         -              Normal
  07/05/2025 08 PM PDT           36.62            102         +              Normal
  07/05/2025 09 PM PDT           36.63            104         +              Normal
  07/05/2025 10 PM PDT           36.63            104         0              Normal
  07/05/2025 11 PM PDT           36.63            104         0              Normal
  07/06/2025 12 AM PDT           36.62            102         -              Normal
  07/06/2025 01 AM PDT           36.62            102         0              Normal
  07/06/2025 02 AM PDT           36.62            102         0              Normal
  07/06/2025 03 AM PDT           36.63            104         +              Normal
  07/06/2025 04 AM PDT           36.65            107         +              Normal
  07/06/2025 05 AM PDT           36.68            113         +              Normal
  07/06/2025 06 AM PDT           36.71            119         +              Normal
  07/06/2025 07 AM PDT           36.74            126         +              Normal
  07/06/2025 08 AM PDT           36.75            129         +              Normal
  07/06/2025 09 AM PDT           36.76            131         +              Normal
  07/06/2025 10 AM PDT           36.76            131         0              Normal
  07/06/2025 11 AM PDT           36.76            131         0              Normal
  07/06/2025 12 PM PDT           36.76            131         0              Normal
  07/06/2025 01 PM PDT           36.76            131         0              Normal
  07/06/2025 02 PM PDT           36.76            131         0              Normal
  07/06/2025 03 PM PDT           36.76            131         0              Normal
  07/06/2025 04 PM PDT           36.76            131         0              Normal
  07/06/2025 05 PM PDT           36.75            129         -              Normal
  07/06/2025 06 PM PDT           36.76            131         +              Normal
  07/06/2025 07 PM PDT           36.73            124         -              Normal
  07/06/2025 08 PM PDT           36.71            119         -              Normal
  07/06/2025 09 PM PDT           36.70            117         -              Normal
  07/06/2025 10 PM PDT           36.70            117         0              Normal
  07/06/2025 11 PM PDT           36.69            115         -              Normal
  07/07/2025 12 AM PDT           36.68            113         -              Normal
  07/07/2025 01 AM PDT           36.68            113         0              Normal
  07/07/2025 02 AM PDT           36.67            111         -              Normal
  07/07/2025 03 AM PDT           36.66            109         -              Normal
  07/07/2025 04 AM PDT           36.66            109         0              Normal
  07/07/2025 05 AM PDT           36.65            107         -              Normal
  07/07/2025 06 AM PDT           36.65            107         0              Normal
  07/07/2025 07 AM PDT           36.65            107         0              Normal
  07/07/2025 08 AM PDT           36.66            109         +              Normal
  07/07/2025 09 AM PDT           36.68            113         +              Normal
  07/07/2025 10 AM PDT           36.68            113         0              Normal
  07/07/2025 11 AM PDT           36.69            115         +              Normal
  07/07/2025 12 PM PDT           36.68            113         -              Normal
  07/07/2025 01 PM PDT           36.68            113         0              Normal
  07/07/2025 02 PM PDT           36.67            111         -              Normal
  07/07/2025 03 PM PDT           36.66            109         -              Normal
  07/07/2025 04 PM PDT           36.65            107         -              Normal
  07/07/2025 05 PM PDT           36.65            107         0              Normal
  07/07/2025 06 PM PDT           36.65            107         0              Normal
  07/07/2025 07 PM PDT           36.64            105         -              Normal
  07/07/2025 08 PM PDT           36.63            104         -              Normal
  07/07/2025 09 PM PDT           36.62            102         -              Normal
  07/07/2025 10 PM PDT           36.61            100         -              Normal
  07/07/2025 11 PM PDT           36.60             98         -              Normal
  07/08/2025 12 AM PDT           36.60             98         0              Normal
  07/08/2025 01 AM PDT           36.59             96         -              Normal
  07/08/2025 02 AM PDT           36.60             98         +              Normal
  07/08/2025 03 AM PDT           36.60             98         0              Normal
  07/08/2025 04 AM PDT           36.61            100         +              Normal
  07/08/2025 05 AM PDT           36.61            100         0              Normal
  07/08/2025 06 AM PDT           36.61            100         0              Normal
  07/08/2025 07 AM PDT           36.61            100         0              Normal
  07/08/2025 08 AM PDT           36.62            102         +              Normal
  07/08/2025 09 AM PDT           36.62            102         0              Normal
  07/08/2025 10 AM PDT           36.61            100         -              Normal
  07/08/2025 11 AM PDT           36.61            100         0              Normal
  07/08/2025 12 PM PDT           36.61            100         0              Normal
  07/08/2025 01 PM PDT           36.62            102         +              Normal
  07/08/2025 02 PM PDT           36.62            102         0              Normal
  07/08/2025 03 PM PDT           36.62            102         0              Normal
  07/08/2025 04 PM PDT           36.62            102         0              Normal
  07/08/2025 05 PM PDT           36.61            100         -              Normal
  07/08/2025 06 PM PDT           36.61            100         0              Normal
  07/08/2025 07 PM PDT           36.61            100         0              Normal
  07/08/2025 08 PM PDT           36.61            100         0              Normal
  07/08/2025 09 PM PDT           36.60             98         -              Normal
  07/08/2025 10 PM PDT           36.60             98         0              Normal
  07/08/2025 11 PM PDT           36.59             96         -              Normal
  07/09/2025 12 AM PDT           36.59             96         0              Normal
  07/09/2025 01 AM PDT           36.59             96         0              Normal
  07/09/2025 02 AM PDT           36.59             96         0              Normal
  07/09/2025 03 AM PDT           36.58             95         -              Normal
  07/09/2025 04 AM PDT           36.59             96         +              Normal
  07/09/2025 05 AM PDT           36.59             96         0              Normal
  07/09/2025 06 AM PDT           36.60             98         +              Normal
  07/09/2025 07 AM PDT           36.60             98         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  07/09/2025 08 AM PDT           36.60             98                        Normal
  07/09/2025 09 AM PDT           36.60             98         0              Normal
  07/09/2025 10 AM PDT           36.60             98         0              Normal
  07/09/2025 11 AM PDT           36.60             98         0              Normal
  07/09/2025 12 PM PDT           36.60             98         0              Normal
  07/09/2025 01 PM PDT           36.60             98         0              Normal
  07/09/2025 02 PM PDT           36.60             98         0              Normal
  07/09/2025 03 PM PDT           36.60             98         0              Normal
  07/09/2025 04 PM PDT           36.60             98         0              Normal
  07/09/2025 05 PM PDT           36.60             98         0              Normal
  07/09/2025 06 PM PDT           36.61            100         +              Normal
  07/09/2025 07 PM PDT           36.61            100         0              Normal
  07/09/2025 08 PM PDT           36.61            100         0              Normal
  07/09/2025 09 PM PDT           36.61            100         0              Normal
  07/09/2025 10 PM PDT           36.61            100         0              Normal
  07/09/2025 11 PM PDT           36.61            100         0              Normal
  07/10/2025 12 AM PDT           36.61            100         0              Normal
  07/10/2025 01 AM PDT           36.61            100         0              Normal
  07/10/2025 02 AM PDT           36.61            100         0              Normal
  07/10/2025 03 AM PDT           36.61            100         0              Normal
  07/10/2025 04 AM PDT           36.61            100         0              Normal
  07/10/2025 05 AM PDT           36.61            100         0              Normal
  07/10/2025 06 AM PDT           36.61            100         0              Normal
  07/10/2025 07 AM PDT           36.61            100         0              Normal
  07/10/2025 08 AM PDT           36.61            100         0              Normal
  07/10/2025 09 AM PDT           36.61            100         0              Normal
  07/10/2025 10 AM PDT           36.61            100         0              Normal
  07/10/2025 11 AM PDT           36.61            100         0              Normal
  07/10/2025 12 PM PDT           36.61            100         0              Normal
  07/10/2025 01 PM PDT           36.61            100         0              Normal
  07/10/2025 02 PM PDT           36.61            100         0              Normal
  07/10/2025 03 PM PDT           36.61            100         0              Normal
  07/10/2025 04 PM PDT           36.61            100         0              Normal
  07/10/2025 05 PM PDT           36.61            100         0              Normal
  07/10/2025 06 PM PDT           36.61            100         0              Normal
  07/10/2025 07 PM PDT           36.61            100         0              Normal
  07/10/2025 08 PM PDT           36.61            100         0              Normal
  07/10/2025 09 PM PDT           36.61            100         0              Normal
  07/10/2025 10 PM PDT           36.61            100         0              Normal
  07/10/2025 11 PM PDT           36.61            100         0              Normal
  07/11/2025 12 AM PDT           36.61            100         0              Normal
  07/11/2025 01 AM PDT           36.61            100         0              Normal
  07/11/2025 02 AM PDT           36.61            100         0              Normal
  07/11/2025 03 AM PDT           36.61            100         0              Normal
  07/11/2025 04 AM PDT           36.61            100         0              Normal
  07/11/2025 05 AM PDT           36.61            100         0              Normal
  07/11/2025 06 AM PDT           36.61            100         0              Normal
  07/11/2025 07 AM PDT           36.61            100         0              Normal
  07/11/2025 08 AM PDT           36.61            100         0              Normal
  07/11/2025 09 AM PDT           36.61            100         0              Normal
  07/11/2025 10 AM PDT           36.61            100         0              Normal
  07/11/2025 11 AM PDT           36.61            100         0              Normal
  07/11/2025 12 PM PDT           36.61            100         0              Normal
  07/11/2025 01 PM PDT           36.61            100         0              Normal
  07/11/2025 02 PM PDT           36.61            100         0              Normal
  07/11/2025 03 PM PDT           36.61            100         0              Normal
  07/11/2025 04 PM PDT           36.61            100         0              Normal
  07/11/2025 05 PM PDT           36.61            100         0              Normal
  07/11/2025 06 PM PDT           36.61            100         0              Normal
  07/11/2025 07 PM PDT           36.61            100         0              Normal
  07/11/2025 08 PM PDT           36.61            100         0              Normal
  07/11/2025 09 PM PDT           36.61            100         0              Normal
  07/11/2025 10 PM PDT           36.61            100         0              Normal
  07/11/2025 11 PM PDT           36.62            102         +              Normal
  07/12/2025 12 AM PDT           36.62            102         0              Normal
  07/12/2025 01 AM PDT           36.62            102         0              Normal
  07/12/2025 02 AM PDT           36.62            102         0              Normal
  07/12/2025 03 AM PDT           36.62            102         0              Normal
  07/12/2025 04 AM PDT           36.62            102         0              Normal
  07/12/2025 05 AM PDT           36.62            102         0              Normal
  07/12/2025 06 AM PDT           36.62            102         0              Normal
  07/12/2025 07 AM PDT           36.62            102         0              Normal
  07/12/2025 08 AM PDT           36.62            102         0              Normal
  07/12/2025 09 AM PDT           36.62            102         0              Normal
  07/12/2025 10 AM PDT           36.62            102         0              Normal
  07/12/2025 11 AM PDT           36.62            102         0              Normal
  07/12/2025 12 PM PDT           36.62            102         0              Normal
  07/12/2025 01 PM PDT           36.62            102         0              Normal
  07/12/2025 02 PM PDT           36.62            102         0              Normal
  07/12/2025 03 PM PDT           36.62            102         0              Normal
  07/12/2025 04 PM PDT           36.62            102         0              Normal
  07/12/2025 05 PM PDT           36.62            102         0              Normal
  07/12/2025 06 PM PDT           36.62            102         0              Normal
  07/12/2025 07 PM PDT           36.62            102         0              Normal
  07/12/2025 08 PM PDT           36.62            102         0              Normal
  07/12/2025 09 PM PDT           36.62            102         0              Normal
  07/12/2025 10 PM PDT           36.62            102         0              Normal
  07/12/2025 11 PM PDT           36.62            102         0              Normal
  07/13/2025 12 AM PDT           36.62            102         0              Normal
  07/13/2025 01 AM PDT           36.62            102         0              Normal
  07/13/2025 02 AM PDT           36.62            102         0              Normal
  07/13/2025 03 AM PDT           36.62            102         0              Normal
  07/13/2025 04 AM PDT           36.62            102         0              Normal
  07/13/2025 05 AM PDT           36.62            102         0              Normal
  07/13/2025 06 AM PDT           36.62            102         0              Normal
  07/13/2025 07 AM PDT           36.62            102         0              Normal
  07/13/2025 08 AM PDT           36.62            102         0              Normal
  07/13/2025 09 AM PDT           36.62            102         0              Normal
  07/13/2025 10 AM PDT           36.62            102         0              Normal
  07/13/2025 11 AM PDT           36.62            102         0              Normal
  07/13/2025 12 PM PDT           36.62            102         0              Normal
  07/13/2025 01 PM PDT           36.62            102         0              Normal
  07/13/2025 02 PM PDT           36.62            102         0              Normal
  07/13/2025 03 PM PDT           36.62            102         0              Normal
  07/13/2025 04 PM PDT           36.62            102         0              Normal
  07/13/2025 05 PM PDT           36.62            102         0              Normal
  07/13/2025 06 PM PDT           36.62            102         0              Normal
  07/13/2025 07 PM PDT           36.62            102         0              Normal
  07/13/2025 08 PM PDT           36.62            102         0              Normal
  07/13/2025 09 PM PDT           36.62            102         0              Normal
  07/13/2025 10 PM PDT           36.62            102         0              Normal
  07/13/2025 11 PM PDT           36.62            102         0              Normal
  07/14/2025 12 AM PDT           36.62            102         0              Normal
  07/14/2025 01 AM PDT           36.62            102         0              Normal
  07/14/2025 02 AM PDT           36.62            102         0              Normal
  07/14/2025 03 AM PDT           36.62            102         0              Normal
  07/14/2025 04 AM PDT           36.62            102         0              Normal
  07/14/2025 05 AM PDT           36.62            102         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.