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: Jul 14 2026 at 7:39 AM PDTNext Issuance: Jul 15 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:  07/14/2026 at 07:39 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  07/13/2026 at 11:00 AM PDT
# Maximum Observed Stage:                       36.71 Feet
# Maximum Observed Flow:                        207 cfs
#
# Earliest Date & Time of Maximum Forecast:     07/14/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       36.66 Feet
# Maximum Forecast Flow:                        196 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  07/09/2026 07 AM PDT           36.68            200                        Normal
  07/09/2026 08 AM PDT           36.68            200         0              Normal
  07/09/2026 09 AM PDT           36.66            196         -              Normal
  07/09/2026 10 AM PDT           36.65            194         -              Normal
  07/09/2026 11 AM PDT           36.63            190         -              Normal
  07/09/2026 12 PM PDT           36.61            185         -              Normal
  07/09/2026 01 PM PDT           36.60            183         -              Normal
  07/09/2026 02 PM PDT           36.59            181         -              Normal
  07/09/2026 03 PM PDT           36.58            179         -              Normal
  07/09/2026 04 PM PDT           36.56            175         -              Normal
  07/09/2026 05 PM PDT           36.55            172         -              Normal
  07/09/2026 06 PM PDT           36.54            170         -              Normal
  07/09/2026 07 PM PDT           36.52            166         -              Normal
  07/09/2026 08 PM PDT           36.52            166         0              Normal
  07/09/2026 09 PM PDT           36.51            164         -              Normal
  07/09/2026 10 PM PDT           36.50            162         -              Normal
  07/09/2026 11 PM PDT           36.50            162         0              Normal
  07/10/2026 12 AM PDT           36.50            162         0              Normal
  07/10/2026 01 AM PDT           36.49            160         -              Normal
  07/10/2026 02 AM PDT           36.49            160         0              Normal
  07/10/2026 03 AM PDT           36.49            160         0              Normal
  07/10/2026 04 AM PDT           36.48            158         -              Normal
  07/10/2026 05 AM PDT           36.48            158         0              Normal
  07/10/2026 06 AM PDT           36.48            158         0              Normal
  07/10/2026 07 AM PDT           36.48            158         0              Normal
  07/10/2026 08 AM PDT           36.47            156         -              Normal
  07/10/2026 09 AM PDT           36.47            156         0              Normal
  07/10/2026 10 AM PDT           36.48            158         +              Normal
  07/10/2026 11 AM PDT           36.49            160         +              Normal
  07/10/2026 12 PM PDT           36.50            162         +              Normal
  07/10/2026 01 PM PDT           36.52            166         +              Normal
  07/10/2026 02 PM PDT           36.54            170         +              Normal
  07/10/2026 03 PM PDT           36.55            172         +              Normal
  07/10/2026 04 PM PDT           36.56            175         +              Normal
  07/10/2026 05 PM PDT           36.55            172         -              Normal
  07/10/2026 06 PM PDT           36.54            170         -              Normal
  07/10/2026 07 PM PDT           36.53            168         -              Normal
  07/10/2026 08 PM PDT           36.53            168         0              Normal
  07/10/2026 09 PM PDT           36.53            168         0              Normal
  07/10/2026 10 PM PDT           36.52            166         -              Normal
  07/10/2026 11 PM PDT           36.52            166         0              Normal
  07/11/2026 12 AM PDT           36.53            168         +              Normal
  07/11/2026 01 AM PDT           36.55            172         +              Normal
  07/11/2026 02 AM PDT           36.56            175         +              Normal
  07/11/2026 03 AM PDT           36.59            181         +              Normal
  07/11/2026 04 AM PDT           36.61            185         +              Normal
  07/11/2026 05 AM PDT           36.61            185         0              Normal
  07/11/2026 06 AM PDT           36.60            183         -              Normal
  07/11/2026 07 AM PDT           36.59            181         -              Normal
  07/11/2026 08 AM PDT           36.58            179         -              Normal
  07/11/2026 09 AM PDT           36.57            177         -              Normal
  07/11/2026 10 AM PDT           36.55            172         -              Normal
  07/11/2026 11 AM PDT           36.54            170         -              Normal
  07/11/2026 12 PM PDT           36.53            168         -              Normal
  07/11/2026 01 PM PDT           36.51            164         -              Normal
  07/11/2026 02 PM PDT           36.51            164         0              Normal
  07/11/2026 03 PM PDT           36.52            166         +              Normal
  07/11/2026 04 PM PDT           36.52            166         0              Normal
  07/11/2026 05 PM PDT           36.52            166         0              Normal
  07/11/2026 06 PM PDT           36.51            164         -              Normal
  07/11/2026 07 PM PDT           36.51            164         0              Normal
  07/11/2026 08 PM PDT           36.51            164         0              Normal
  07/11/2026 09 PM PDT           36.51            164         0              Normal
  07/11/2026 10 PM PDT           36.53            168         +              Normal
  07/11/2026 11 PM PDT           36.54            170         +              Normal
  07/12/2026 12 AM PDT           36.55            172         +              Normal
  07/12/2026 01 AM PDT           36.56            175         +              Normal
  07/12/2026 02 AM PDT           36.57            177         +              Normal
  07/12/2026 03 AM PDT           36.59            181         +              Normal
  07/12/2026 04 AM PDT           36.60            183         +              Normal
  07/12/2026 05 AM PDT           36.61            185         +              Normal
  07/12/2026 06 AM PDT           36.62            187         +              Normal
  07/12/2026 07 AM PDT           36.62            187         0              Normal
  07/12/2026 08 AM PDT           36.62            187         0              Normal
  07/12/2026 09 AM PDT           36.62            187         0              Normal
  07/12/2026 10 AM PDT           36.63            190         +              Normal
  07/12/2026 11 AM PDT           36.63            190         0              Normal
  07/12/2026 12 PM PDT           36.63            190         0              Normal
  07/12/2026 01 PM PDT           36.64            192         +              Normal
  07/12/2026 02 PM PDT           36.63            190         -              Normal
  07/12/2026 03 PM PDT           36.63            190         0              Normal
  07/12/2026 04 PM PDT           36.63            190         0              Normal
  07/12/2026 05 PM PDT           36.62            187         -              Normal
  07/12/2026 06 PM PDT           36.61            185         -              Normal
  07/12/2026 07 PM PDT           36.61            185         0              Normal
  07/12/2026 08 PM PDT           36.61            185         0              Normal
  07/12/2026 09 PM PDT           36.61            185         0              Normal
  07/12/2026 10 PM PDT           36.61            185         0              Normal
  07/12/2026 11 PM PDT           36.61            185         0              Normal
  07/13/2026 12 AM PDT           36.61            185         0              Normal
  07/13/2026 01 AM PDT           36.62            187         +              Normal
  07/13/2026 02 AM PDT           36.63            190         +              Normal
  07/13/2026 03 AM PDT           36.63            190         0              Normal
  07/13/2026 04 AM PDT           36.64            192         +              Normal
  07/13/2026 05 AM PDT           36.64            192         0              Normal
  07/13/2026 06 AM PDT           36.65            194         +              Normal
  07/13/2026 07 AM PDT           36.67            198         +              Normal
  07/13/2026 08 AM PDT           36.68            200         +              Normal
  07/13/2026 09 AM PDT           36.71            207         +              Normal
  07/13/2026 10 AM PDT           36.71            207         0              Normal
  07/13/2026 11 AM PDT           36.71            207         0              Normal
  07/13/2026 12 PM PDT           36.70            205         -              Normal
  07/13/2026 01 PM PDT           36.68            200         -              Normal
  07/13/2026 02 PM PDT           36.66            196         -              Normal
  07/13/2026 03 PM PDT           36.64            192         -              Normal
  07/13/2026 04 PM PDT           36.63            190         -              Normal
  07/13/2026 05 PM PDT           36.62            187         -              Normal
  07/13/2026 06 PM PDT           36.62            187         0              Normal
  07/13/2026 07 PM PDT           36.62            187         0              Normal
  07/13/2026 08 PM PDT           36.63            190         +              Normal
  07/13/2026 09 PM PDT           36.64            192         +              Normal
  07/13/2026 10 PM PDT           36.64            192         0              Normal
  07/13/2026 11 PM PDT           36.64            192         0              Normal
  07/14/2026 12 AM PDT           36.64            192         0              Normal
  07/14/2026 01 AM PDT           36.64            192         0              Normal
  07/14/2026 02 AM PDT           36.64            192         0              Normal
  07/14/2026 03 AM PDT           36.65            194         +              Normal
  07/14/2026 04 AM PDT           36.66            196         +              Normal
  07/14/2026 05 AM PDT           36.67            198         +              Normal
  07/14/2026 06 AM PDT           36.66            196         -              Normal
  07/14/2026 07 AM PDT           36.66            196         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  07/14/2026 08 AM PDT           36.66            196                        Normal
  07/14/2026 09 AM PDT           36.66            196         0              Normal
  07/14/2026 10 AM PDT           36.66            196         0              Normal
  07/14/2026 11 AM PDT           36.65            194         -              Normal
  07/14/2026 12 PM PDT           36.65            194         0              Normal
  07/14/2026 01 PM PDT           36.65            194         0              Normal
  07/14/2026 02 PM PDT           36.65            194         0              Normal
  07/14/2026 03 PM PDT           36.65            194         0              Normal
  07/14/2026 04 PM PDT           36.65            194         0              Normal
  07/14/2026 05 PM PDT           36.65            194         0              Normal
  07/14/2026 06 PM PDT           36.65            194         0              Normal
  07/14/2026 07 PM PDT           36.65            194         0              Normal
  07/14/2026 08 PM PDT           36.65            194         0              Normal
  07/14/2026 09 PM PDT           36.65            194         0              Normal
  07/14/2026 10 PM PDT           36.64            192         -              Normal
  07/14/2026 11 PM PDT           36.64            192         0              Normal
  07/15/2026 12 AM PDT           36.64            192         0              Normal
  07/15/2026 01 AM PDT           36.64            192         0              Normal
  07/15/2026 02 AM PDT           36.64            192         0              Normal
  07/15/2026 03 AM PDT           36.64            192         0              Normal
  07/15/2026 04 AM PDT           36.64            192         0              Normal
  07/15/2026 05 AM PDT           36.64            192         0              Normal
  07/15/2026 06 AM PDT           36.64            192         0              Normal
  07/15/2026 07 AM PDT           36.64            192         0              Normal
  07/15/2026 08 AM PDT           36.64            192         0              Normal
  07/15/2026 09 AM PDT           36.64            192         0              Normal
  07/15/2026 10 AM PDT           36.64            192         0              Normal
  07/15/2026 11 AM PDT           36.64            192         0              Normal
  07/15/2026 12 PM PDT           36.64            192         0              Normal
  07/15/2026 01 PM PDT           36.64            192         0              Normal
  07/15/2026 02 PM PDT           36.64            192         0              Normal
  07/15/2026 03 PM PDT           36.64            192         0              Normal
  07/15/2026 04 PM PDT           36.64            192         0              Normal
  07/15/2026 05 PM PDT           36.64            192         0              Normal
  07/15/2026 06 PM PDT           36.64            192         0              Normal
  07/15/2026 07 PM PDT           36.64            192         0              Normal
  07/15/2026 08 PM PDT           36.64            192         0              Normal
  07/15/2026 09 PM PDT           36.64            192         0              Normal
  07/15/2026 10 PM PDT           36.64            192         0              Normal
  07/15/2026 11 PM PDT           36.64            192         0              Normal
  07/16/2026 12 AM PDT           36.64            192         0              Normal
  07/16/2026 01 AM PDT           36.64            192         0              Normal
  07/16/2026 02 AM PDT           36.64            192         0              Normal
  07/16/2026 03 AM PDT           36.64            192         0              Normal
  07/16/2026 04 AM PDT           36.64            192         0              Normal
  07/16/2026 05 AM PDT           36.64            192         0              Normal
  07/16/2026 06 AM PDT           36.64            192         0              Normal
  07/16/2026 07 AM PDT           36.64            192         0              Normal
  07/16/2026 08 AM PDT           36.65            194         +              Normal
  07/16/2026 09 AM PDT           36.65            194         0              Normal
  07/16/2026 10 AM PDT           36.65            194         0              Normal
  07/16/2026 11 AM PDT           36.65            194         0              Normal
  07/16/2026 12 PM PDT           36.65            194         0              Normal
  07/16/2026 01 PM PDT           36.65            194         0              Normal
  07/16/2026 02 PM PDT           36.65            194         0              Normal
  07/16/2026 03 PM PDT           36.65            194         0              Normal
  07/16/2026 04 PM PDT           36.65            194         0              Normal
  07/16/2026 05 PM PDT           36.65            194         0              Normal
  07/16/2026 06 PM PDT           36.65            194         0              Normal
  07/16/2026 07 PM PDT           36.65            194         0              Normal
  07/16/2026 08 PM PDT           36.65            194         0              Normal
  07/16/2026 09 PM PDT           36.65            194         0              Normal
  07/16/2026 10 PM PDT           36.65            194         0              Normal
  07/16/2026 11 PM PDT           36.65            194         0              Normal
  07/17/2026 12 AM PDT           36.65            194         0              Normal
  07/17/2026 01 AM PDT           36.65            194         0              Normal
  07/17/2026 02 AM PDT           36.65            194         0              Normal
  07/17/2026 03 AM PDT           36.65            194         0              Normal
  07/17/2026 04 AM PDT           36.65            194         0              Normal
  07/17/2026 05 AM PDT           36.65            194         0              Normal
  07/17/2026 06 AM PDT           36.65            194         0              Normal
  07/17/2026 07 AM PDT           36.65            194         0              Normal
  07/17/2026 08 AM PDT           36.65            194         0              Normal
  07/17/2026 09 AM PDT           36.65            194         0              Normal
  07/17/2026 10 AM PDT           36.65            194         0              Normal
  07/17/2026 11 AM PDT           36.65            194         0              Normal
  07/17/2026 12 PM PDT           36.65            194         0              Normal
  07/17/2026 01 PM PDT           36.65            194         0              Normal
  07/17/2026 02 PM PDT           36.65            194         0              Normal
  07/17/2026 03 PM PDT           36.65            194         0              Normal
  07/17/2026 04 PM PDT           36.65            194         0              Normal
  07/17/2026 05 PM PDT           36.65            194         0              Normal
  07/17/2026 06 PM PDT           36.65            194         0              Normal
  07/17/2026 07 PM PDT           36.65            194         0              Normal
  07/17/2026 08 PM PDT           36.65            194         0              Normal
  07/17/2026 09 PM PDT           36.65            194         0              Normal
  07/17/2026 10 PM PDT           36.65            194         0              Normal
  07/17/2026 11 PM PDT           36.65            194         0              Normal
  07/18/2026 12 AM PDT           36.65            194         0              Normal
  07/18/2026 01 AM PDT           36.65            194         0              Normal
  07/18/2026 02 AM PDT           36.65            194         0              Normal
  07/18/2026 03 AM PDT           36.65            194         0              Normal
  07/18/2026 04 AM PDT           36.65            194         0              Normal
  07/18/2026 05 AM PDT           36.65            194         0              Normal
  07/18/2026 06 AM PDT           36.65            194         0              Normal
  07/18/2026 07 AM PDT           36.65            194         0              Normal
  07/18/2026 08 AM PDT           36.65            194         0              Normal
  07/18/2026 09 AM PDT           36.65            194         0              Normal
  07/18/2026 10 AM PDT           36.65            194         0              Normal
  07/18/2026 11 AM PDT           36.65            194         0              Normal
  07/18/2026 12 PM PDT           36.65            194         0              Normal
  07/18/2026 01 PM PDT           36.65            194         0              Normal
  07/18/2026 02 PM PDT           36.65            194         0              Normal
  07/18/2026 03 PM PDT           36.65            194         0              Normal
  07/18/2026 04 PM PDT           36.65            194         0              Normal
  07/18/2026 05 PM PDT           36.65            194         0              Normal
  07/18/2026 06 PM PDT           36.65            194         0              Normal
  07/18/2026 07 PM PDT           36.65            194         0              Normal
  07/18/2026 08 PM PDT           36.65            194         0              Normal
  07/18/2026 09 PM PDT           36.65            194         0              Normal
  07/18/2026 10 PM PDT           36.65            194         0              Normal
  07/18/2026 11 PM PDT           36.65            194         0              Normal
  07/19/2026 12 AM PDT           36.65            194         0              Normal
  07/19/2026 01 AM PDT           36.65            194         0              Normal
  07/19/2026 02 AM PDT           36.65            194         0              Normal
  07/19/2026 03 AM PDT           36.65            194         0              Normal
  07/19/2026 04 AM PDT           36.65            194         0              Normal
  07/19/2026 05 AM PDT           36.65            194         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.