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: Oct 03 2026 at 7:13 AM PDTNext Issuance: Oct 04 2026 at 9:00 AM PDT
Action: 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:  10/03/2026 at 07:13 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  10/03/2026 at 06:00 AM PDT
# Maximum Observed Stage:                       37.73 Feet
# Maximum Observed Flow:                        426 cfs
#
# Earliest Date & Time of Maximum Forecast:     10/03/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       37.58 Feet
# Maximum Forecast Flow:                        381 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  09/28/2026 07 AM PDT           36.72            160                        Normal
  09/28/2026 08 AM PDT           36.73            162         +              Normal
  09/28/2026 09 AM PDT           36.74            164         +              Normal
  09/28/2026 10 AM PDT           36.74            164         0              Normal
  09/28/2026 11 AM PDT           36.74            164         0              Normal
  09/28/2026 12 PM PDT           36.74            164         0              Normal
  09/28/2026 01 PM PDT           36.75            166         +              Normal
  09/28/2026 02 PM PDT           36.76            168         +              Normal
  09/28/2026 03 PM PDT           36.76            168         0              Normal
  09/28/2026 04 PM PDT           36.76            168         0              Normal
  09/28/2026 05 PM PDT           36.77            170         +              Normal
  09/28/2026 06 PM PDT           36.77            170         0              Normal
  09/28/2026 07 PM PDT           36.78            172         +              Normal
  09/28/2026 08 PM PDT           36.77            170         -              Normal
  09/28/2026 09 PM PDT           36.77            170         0              Normal
  09/28/2026 10 PM PDT           36.77            170         0              Normal
  09/28/2026 11 PM PDT           36.77            170         0              Normal
  09/29/2026 12 AM PDT           36.77            170         0              Normal
  09/29/2026 01 AM PDT           36.77            170         0              Normal
  09/29/2026 02 AM PDT           36.78            172         +              Normal
  09/29/2026 03 AM PDT           36.78            172         0              Normal
  09/29/2026 04 AM PDT           36.79            175         +              Normal
  09/29/2026 05 AM PDT           36.79            175         0              Normal
  09/29/2026 06 AM PDT           36.80            177         +              Normal
  09/29/2026 07 AM PDT           36.81            179         +              Normal
  09/29/2026 08 AM PDT           36.82            181         +              Normal
  09/29/2026 09 AM PDT           36.83            183         +              Normal
  09/29/2026 10 AM PDT           36.83            183         0              Normal
  09/29/2026 11 AM PDT           36.83            183         0              Normal
  09/29/2026 12 PM PDT           36.83            183         0              Normal
  09/29/2026 01 PM PDT           36.85            187         +              Normal
  09/29/2026 02 PM PDT           36.85            187         0              Normal
  09/29/2026 03 PM PDT           36.85            187         0              Normal
  09/29/2026 04 PM PDT           36.87            192         +              Normal
  09/29/2026 05 PM PDT           36.87            192         0              Normal
  09/29/2026 06 PM PDT           36.86            190         -              Normal
  09/29/2026 07 PM PDT           36.85            187         -              Normal
  09/29/2026 08 PM PDT           36.84            185         -              Normal
  09/29/2026 09 PM PDT           36.83            183         -              Normal
  09/29/2026 10 PM PDT           36.82            181         -              Normal
  09/29/2026 11 PM PDT           36.80            177         -              Normal
  09/30/2026 12 AM PDT           36.80            177         0              Normal
  09/30/2026 01 AM PDT           36.80            177         0              Normal
  09/30/2026 02 AM PDT           36.80            177         0              Normal
  09/30/2026 03 AM PDT           36.78            172         -              Normal
  09/30/2026 04 AM PDT           36.78            172         0              Normal
  09/30/2026 05 AM PDT           36.78            172         0              Normal
  09/30/2026 06 AM PDT           36.78            172         0              Normal
  09/30/2026 07 AM PDT           36.79            175         +              Normal
  09/30/2026 08 AM PDT           36.80            177         +              Normal
  09/30/2026 09 AM PDT           36.81            179         +              Normal
  09/30/2026 10 AM PDT           36.83            183         +              Normal
  09/30/2026 11 AM PDT           36.84            185         +              Normal
  09/30/2026 12 PM PDT           36.84            185         0              Normal
  09/30/2026 01 PM PDT           36.84            185         0              Normal
  09/30/2026 02 PM PDT           36.83            183         -              Normal
  09/30/2026 03 PM PDT           36.83            183         0              Normal
  09/30/2026 04 PM PDT           36.82            181         -              Normal
  09/30/2026 05 PM PDT           36.82            181         0              Normal
  09/30/2026 06 PM PDT           36.81            179         -              Normal
  09/30/2026 07 PM PDT           36.81            179         0              Normal
  09/30/2026 08 PM PDT           36.81            179         0              Normal
  09/30/2026 09 PM PDT           36.81            179         0              Normal
  09/30/2026 10 PM PDT           36.80            177         -              Normal
  09/30/2026 11 PM PDT           36.81            179         +              Normal
  10/01/2026 12 AM PDT           36.82            181         +              Normal
  10/01/2026 01 AM PDT           36.82            181         0              Normal
  10/01/2026 02 AM PDT           36.83            183         +              Normal
  10/01/2026 03 AM PDT           36.84            185         +              Normal
  10/01/2026 04 AM PDT           36.84            185         0              Normal
  10/01/2026 05 AM PDT           36.85            187         +              Normal
  10/01/2026 06 AM PDT           36.86            190         +              Normal
  10/01/2026 07 AM PDT           36.87            192         +              Normal
  10/01/2026 08 AM PDT           36.88            194         +              Normal
  10/01/2026 09 AM PDT           36.89            196         +              Normal
  10/01/2026 10 AM PDT           36.91            200         +              Normal
  10/01/2026 11 AM PDT           36.92            203         +              Normal
  10/01/2026 12 PM PDT           36.92            203         0              Normal
  10/01/2026 01 PM PDT           36.92            203         0              Normal
  10/01/2026 02 PM PDT           36.92            203         0              Normal
  10/01/2026 03 PM PDT           36.90            198         -              Normal
  10/01/2026 04 PM PDT           36.90            198         0              Normal
  10/01/2026 05 PM PDT           36.88            194         -              Normal
  10/01/2026 06 PM PDT           36.87            192         -              Normal
  10/01/2026 07 PM PDT           36.85            187         -              Normal
  10/01/2026 08 PM PDT           36.82            181         -              Normal
  10/01/2026 09 PM PDT           36.81            179         -              Normal
  10/01/2026 10 PM PDT           36.80            177         -              Normal
  10/01/2026 11 PM PDT           36.79            175         -              Normal
  10/02/2026 12 AM PDT           36.79            175         0              Normal
  10/02/2026 01 AM PDT           36.79            175         0              Normal
  10/02/2026 02 AM PDT           36.79            175         0              Normal
  10/02/2026 03 AM PDT           36.79            175         0              Normal
  10/02/2026 04 AM PDT           36.80            177         +              Normal
  10/02/2026 05 AM PDT           36.80            177         0              Normal
  10/02/2026 06 AM PDT           36.81            179         +              Normal
  10/02/2026 07 AM PDT           36.83            183         +              Normal
  10/02/2026 08 AM PDT           36.85            187         +              Normal
  10/02/2026 09 AM PDT           36.88            194         +              Normal
  10/02/2026 10 AM PDT           36.92            203         +              Normal
  10/02/2026 11 AM PDT           36.95            210         +              Normal
  10/02/2026 12 PM PDT           37.00            223         +              Normal
  10/02/2026 01 PM PDT           37.06            238         +              Normal
  10/02/2026 02 PM PDT           37.12            253         +              Normal
  10/02/2026 03 PM PDT           37.18            269         +              Normal
  10/02/2026 04 PM PDT           37.24            285         +              Normal
  10/02/2026 05 PM PDT           37.29            299         +              Normal
  10/02/2026 06 PM PDT           37.34            313         +              Normal
  10/02/2026 07 PM PDT           37.39            327         +              Normal
  10/02/2026 08 PM PDT           37.44            341         +              Normal
  10/02/2026 09 PM PDT           37.49            355         +              Normal
  10/02/2026 10 PM PDT           37.51            361         +              Normal
  10/02/2026 11 PM PDT           37.54            370         +              Normal
  10/03/2026 12 AM PDT           37.58            381         +              Normal
  10/03/2026 01 AM PDT           37.61            390         +              Normal
  10/03/2026 02 AM PDT           37.65            402         +              Normal
  10/03/2026 03 AM PDT           37.67            408         +              Normal
  10/03/2026 04 AM PDT           37.69            414         +              Normal
  10/03/2026 05 AM PDT           37.71            420         +              Normal
  10/03/2026 06 AM PDT           37.73            426         +              Normal
  10/03/2026 07 AM PDT           37.66            405         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  10/03/2026 08 AM PDT           37.58            381                        Normal
  10/03/2026 09 AM PDT           37.51            361         -              Normal
  10/03/2026 10 AM PDT           37.43            338         -              Normal
  10/03/2026 11 AM PDT           37.35            315         -              Normal
  10/03/2026 12 PM PDT           37.27            293         -              Normal
  10/03/2026 01 PM PDT           37.19            272         -              Normal
  10/03/2026 02 PM PDT           37.11            251         -              Normal
  10/03/2026 03 PM PDT           37.02            228         -              Normal
  10/03/2026 04 PM PDT           36.94            208         -              Normal
  10/03/2026 05 PM PDT           36.84            185         -              Normal
  10/03/2026 06 PM PDT           36.74            164         -              Normal
  10/03/2026 07 PM PDT           36.73            162         -              Normal
  10/03/2026 08 PM PDT           36.73            162         0              Normal
  10/03/2026 09 PM PDT           36.73            162         0              Normal
  10/03/2026 10 PM PDT           36.73            162         0              Normal
  10/03/2026 11 PM PDT           36.73            162         0              Normal
  10/04/2026 12 AM PDT           36.73            162         0              Normal
  10/04/2026 01 AM PDT           36.73            162         0              Normal
  10/04/2026 02 AM PDT           36.73            162         0              Normal
  10/04/2026 03 AM PDT           36.73            162         0              Normal
  10/04/2026 04 AM PDT           36.73            162         0              Normal
  10/04/2026 05 AM PDT           36.73            162         0              Normal
  10/04/2026 06 AM PDT           36.73            162         0              Normal
  10/04/2026 07 AM PDT           36.73            162         0              Normal
  10/04/2026 08 AM PDT           36.73            162         0              Normal
  10/04/2026 09 AM PDT           36.73            162         0              Normal
  10/04/2026 10 AM PDT           36.73            162         0              Normal
  10/04/2026 11 AM PDT           36.73            162         0              Normal
  10/04/2026 12 PM PDT           36.73            162         0              Normal
  10/04/2026 01 PM PDT           36.73            162         0              Normal
  10/04/2026 02 PM PDT           36.73            162         0              Normal
  10/04/2026 03 PM PDT           36.73            162         0              Normal
  10/04/2026 04 PM PDT           36.73            162         0              Normal
  10/04/2026 05 PM PDT           36.73            162         0              Normal
  10/04/2026 06 PM PDT           36.73            162         0              Normal
  10/04/2026 07 PM PDT           36.73            162         0              Normal
  10/04/2026 08 PM PDT           36.73            162         0              Normal
  10/04/2026 09 PM PDT           36.73            162         0              Normal
  10/04/2026 10 PM PDT           36.73            162         0              Normal
  10/04/2026 11 PM PDT           36.73            162         0              Normal
  10/05/2026 12 AM PDT           36.73            162         0              Normal
  10/05/2026 01 AM PDT           36.73            162         0              Normal
  10/05/2026 02 AM PDT           36.72            160         -              Normal
  10/05/2026 03 AM PDT           36.72            160         0              Normal
  10/05/2026 04 AM PDT           36.72            160         0              Normal
  10/05/2026 05 AM PDT           36.72            160         0              Normal
  10/05/2026 06 AM PDT           36.72            160         0              Normal
  10/05/2026 07 AM PDT           36.72            160         0              Normal
  10/05/2026 08 AM PDT           36.72            160         0              Normal
  10/05/2026 09 AM PDT           36.72            160         0              Normal
  10/05/2026 10 AM PDT           36.72            160         0              Normal
  10/05/2026 11 AM PDT           36.72            160         0              Normal
  10/05/2026 12 PM PDT           36.72            160         0              Normal
  10/05/2026 01 PM PDT           36.72            160         0              Normal
  10/05/2026 02 PM PDT           36.72            160         0              Normal
  10/05/2026 03 PM PDT           36.72            160         0              Normal
  10/05/2026 04 PM PDT           36.72            160         0              Normal
  10/05/2026 05 PM PDT           36.73            162         +              Normal
  10/05/2026 06 PM PDT           36.73            162         0              Normal
  10/05/2026 07 PM PDT           36.72            160         -              Normal
  10/05/2026 08 PM PDT           36.72            160         0              Normal
  10/05/2026 09 PM PDT           36.72            160         0              Normal
  10/05/2026 10 PM PDT           36.72            160         0              Normal
  10/05/2026 11 PM PDT           36.72            160         0              Normal
  10/06/2026 12 AM PDT           36.72            160         0              Normal
  10/06/2026 01 AM PDT           36.72            160         0              Normal
  10/06/2026 02 AM PDT           36.72            160         0              Normal
  10/06/2026 03 AM PDT           36.72            160         0              Normal
  10/06/2026 04 AM PDT           36.72            160         0              Normal
  10/06/2026 05 AM PDT           36.72            160         0              Normal
  10/06/2026 06 AM PDT           36.72            160         0              Normal
  10/06/2026 07 AM PDT           36.72            160         0              Normal
  10/06/2026 08 AM PDT           36.72            160         0              Normal
  10/06/2026 09 AM PDT           36.72            160         0              Normal
  10/06/2026 10 AM PDT           36.72            160         0              Normal
  10/06/2026 11 AM PDT           36.72            160         0              Normal
  10/06/2026 12 PM PDT           36.72            160         0              Normal
  10/06/2026 01 PM PDT           36.72            160         0              Normal
  10/06/2026 02 PM PDT           36.72            160         0              Normal
  10/06/2026 03 PM PDT           36.72            160         0              Normal
  10/06/2026 04 PM PDT           36.72            160         0              Normal
  10/06/2026 05 PM PDT           36.72            160         0              Normal
  10/06/2026 06 PM PDT           36.72            160         0              Normal
  10/06/2026 07 PM PDT           36.72            160         0              Normal
  10/06/2026 08 PM PDT           36.72            160         0              Normal
  10/06/2026 09 PM PDT           36.72            160         0              Normal
  10/06/2026 10 PM PDT           36.72            160         0              Normal
  10/06/2026 11 PM PDT           36.71            158         -              Normal
  10/07/2026 12 AM PDT           36.71            158         0              Normal
  10/07/2026 01 AM PDT           36.71            158         0              Normal
  10/07/2026 02 AM PDT           36.71            158         0              Normal
  10/07/2026 03 AM PDT           36.71            158         0              Normal
  10/07/2026 04 AM PDT           36.71            158         0              Normal
  10/07/2026 05 AM PDT           36.71            158         0              Normal
  10/07/2026 06 AM PDT           36.71            158         0              Normal
  10/07/2026 07 AM PDT           36.71            158         0              Normal
  10/07/2026 08 AM PDT           36.71            158         0              Normal
  10/07/2026 09 AM PDT           36.71            158         0              Normal
  10/07/2026 10 AM PDT           36.71            158         0              Normal
  10/07/2026 11 AM PDT           36.71            158         0              Normal
  10/07/2026 12 PM PDT           36.71            158         0              Normal
  10/07/2026 01 PM PDT           36.71            158         0              Normal
  10/07/2026 02 PM PDT           36.71            158         0              Normal
  10/07/2026 03 PM PDT           36.71            158         0              Normal
  10/07/2026 04 PM PDT           36.71            158         0              Normal
  10/07/2026 05 PM PDT           36.71            158         0              Normal
  10/07/2026 06 PM PDT           36.71            158         0              Normal
  10/07/2026 07 PM PDT           36.71            158         0              Normal
  10/07/2026 08 PM PDT           36.71            158         0              Normal
  10/07/2026 09 PM PDT           36.71            158         0              Normal
  10/07/2026 10 PM PDT           36.71            158         0              Normal
  10/07/2026 11 PM PDT           36.71            158         0              Normal
  10/08/2026 12 AM PDT           36.71            158         0              Normal
  10/08/2026 01 AM PDT           36.71            158         0              Normal
  10/08/2026 02 AM PDT           36.71            158         0              Normal
  10/08/2026 03 AM PDT           36.71            158         0              Normal
  10/08/2026 04 AM PDT           36.71            158         0              Normal
  10/08/2026 05 AM PDT           36.71            158         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.