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: Jan 16 2026 at 1:38 PM PSTNext Issuance: Jan 17 2026 at 9:00 AM PST
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:  01/16/2026 at 01:38 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  01/11/2026 at 02:00 PM PST
# Maximum Observed Stage:                       37.51 Feet
# Maximum Observed Flow:                        404 cfs
#
# Earliest Date & Time of Maximum Forecast:     01/16/2026 at 02:00 PM PST
# Maximum Forecast Stage:                       37.33 Feet
# Maximum Forecast Flow:                        357 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  01/11/2026 01 PM PST           37.51            404                        Normal
  01/11/2026 02 PM PST           37.51            404         0              Normal
  01/11/2026 03 PM PST           37.50            402         -              Normal
  01/11/2026 04 PM PST           37.50            402         0              Normal
  01/11/2026 05 PM PST           37.49            399         -              Normal
  01/11/2026 06 PM PST           37.49            399         0              Normal
  01/11/2026 07 PM PST           37.48            396         -              Normal
  01/11/2026 08 PM PST           37.49            399         +              Normal
  01/11/2026 09 PM PST           37.48            396         -              Normal
  01/11/2026 10 PM PST           37.48            396         0              Normal
  01/11/2026 11 PM PST           37.48            396         0              Normal
  01/12/2026 12 AM PST           37.48            396         0              Normal
  01/12/2026 01 AM PST           37.48            396         0              Normal
  01/12/2026 02 AM PST           37.48            396         0              Normal
  01/12/2026 03 AM PST           37.48            396         0              Normal
  01/12/2026 04 AM PST           37.48            396         0              Normal
  01/12/2026 05 AM PST           37.48            396         0              Normal
  01/12/2026 06 AM PST           37.48            396         0              Normal
  01/12/2026 07 AM PST           37.48            396         0              Normal
  01/12/2026 08 AM PST           37.47            394         -              Normal
  01/12/2026 09 AM PST           37.47            394         0              Normal
  01/12/2026 10 AM PST           37.47            394         0              Normal
  01/12/2026 11 AM PST           37.48            396         +              Normal
  01/12/2026 12 PM PST           37.47            394         -              Normal
  01/12/2026 01 PM PST           37.48            396         +              Normal
  01/12/2026 02 PM PST           37.48            396         0              Normal
  01/12/2026 03 PM PST           37.47            394         -              Normal
  01/12/2026 04 PM PST           37.47            394         0              Normal
  01/12/2026 05 PM PST           37.47            394         0              Normal
  01/12/2026 06 PM PST           37.46            391         -              Normal
  01/12/2026 07 PM PST           37.46            391         0              Normal
  01/12/2026 08 PM PST           37.46            391         0              Normal
  01/12/2026 09 PM PST           37.45            388         -              Normal
  01/12/2026 10 PM PST           37.45            388         0              Normal
  01/12/2026 11 PM PST           37.45            388         0              Normal
  01/13/2026 12 AM PST           37.44            386         -              Normal
  01/13/2026 01 AM PST           37.44            386         0              Normal
  01/13/2026 02 AM PST           37.44            386         0              Normal
  01/13/2026 03 AM PST           37.43            383         -              Normal
  01/13/2026 04 AM PST           37.44            386         +              Normal
  01/13/2026 05 AM PST           37.44            386         0              Normal
  01/13/2026 06 AM PST           37.44            386         0              Normal
  01/13/2026 07 AM PST           37.44            386         0              Normal
  01/13/2026 08 AM PST           37.44            386         0              Normal
  01/13/2026 09 AM PST           37.43            383         -              Normal
  01/13/2026 10 AM PST           37.43            383         0              Normal
  01/13/2026 11 AM PST           37.44            386         +              Normal
  01/13/2026 12 PM PST           37.44            386         0              Normal
  01/13/2026 01 PM PST           37.44            386         0              Normal
  01/13/2026 02 PM PST           37.44            386         0              Normal
  01/13/2026 03 PM PST           37.44            386         0              Normal
  01/13/2026 04 PM PST           37.43            383         -              Normal
  01/13/2026 05 PM PST           37.43            383         0              Normal
  01/13/2026 06 PM PST           37.43            383         0              Normal
  01/13/2026 07 PM PST           37.42            380         -              Normal
  01/13/2026 08 PM PST           37.41            378         -              Normal
  01/13/2026 09 PM PST           37.41            378         0              Normal
  01/13/2026 10 PM PST           37.41            378         0              Normal
  01/13/2026 11 PM PST           37.40            375         -              Normal
  01/14/2026 12 AM PST           37.39            372         -              Normal
  01/14/2026 01 AM PST           37.39            372         0              Normal
  01/14/2026 02 AM PST           37.38            370         -              Normal
  01/14/2026 03 AM PST           37.38            370         0              Normal
  01/14/2026 04 AM PST           37.37            367         -              Normal
  01/14/2026 05 AM PST           37.37            367         0              Normal
  01/14/2026 06 AM PST           37.38            370         +              Normal
  01/14/2026 07 AM PST           37.37            367         -              Normal
  01/14/2026 08 AM PST           37.37            367         0              Normal
  01/14/2026 09 AM PST           37.37            367         0              Normal
  01/14/2026 10 AM PST           37.37            367         0              Normal
  01/14/2026 11 AM PST           37.37            367         0              Normal
  01/14/2026 12 PM PST           37.37            367         0              Normal
  01/14/2026 01 PM PST           37.37            367         0              Normal
  01/14/2026 02 PM PST           37.37            367         0              Normal
  01/14/2026 03 PM PST           37.37            367         0              Normal
  01/14/2026 04 PM PST           37.37            367         0              Normal
  01/14/2026 05 PM PST           37.37            367         0              Normal
  01/14/2026 06 PM PST           37.37            367         0              Normal
  01/14/2026 07 PM PST           37.36            364         -              Normal
  01/14/2026 08 PM PST           37.36            364         0              Normal
  01/14/2026 09 PM PST           37.36            364         0              Normal
  01/14/2026 10 PM PST           37.35            362         -              Normal
  01/14/2026 11 PM PST           37.35            362         0              Normal
  01/15/2026 12 AM PST           37.35            362         0              Normal
  01/15/2026 01 AM PST           37.34            359         -              Normal
  01/15/2026 02 AM PST           37.34            359         0              Normal
  01/15/2026 03 AM PST           37.34            359         0              Normal
  01/15/2026 04 AM PST           37.34            359         0              Normal
  01/15/2026 05 AM PST           37.34            359         0              Normal
  01/15/2026 06 AM PST           37.34            359         0              Normal
  01/15/2026 07 AM PST           37.34            359         0              Normal
  01/15/2026 08 AM PST           37.34            359         0              Normal
  01/15/2026 09 AM PST           37.34            359         0              Normal
  01/15/2026 10 AM PST           37.34            359         0              Normal
  01/15/2026 11 AM PST           37.35            362         +              Normal
  01/15/2026 12 PM PST           37.35            362         0              Normal
  01/15/2026 01 PM PST           37.36            364         +              Normal
  01/15/2026 02 PM PST           37.36            364         0              Normal
  01/15/2026 03 PM PST           37.36            364         0              Normal
  01/15/2026 04 PM PST           37.36            364         0              Normal
  01/15/2026 05 PM PST           37.36            364         0              Normal
  01/15/2026 06 PM PST           37.36            364         0              Normal
  01/15/2026 07 PM PST           37.35            362         -              Normal
  01/15/2026 08 PM PST           37.35            362         0              Normal
  01/15/2026 09 PM PST           37.35            362         0              Normal
  01/15/2026 10 PM PST           37.34            359         -              Normal
  01/15/2026 11 PM PST           37.34            359         0              Normal
  01/16/2026 12 AM PST           37.34            359         0              Normal
  01/16/2026 01 AM PST           37.34            359         0              Normal
  01/16/2026 02 AM PST           37.35            362         +              Normal
  01/16/2026 03 AM PST           37.35            362         0              Normal
  01/16/2026 04 AM PST           37.35            362         0              Normal
  01/16/2026 05 AM PST           37.35            362         0              Normal
  01/16/2026 06 AM PST           37.35            362         0              Normal
  01/16/2026 07 AM PST           37.35            362         0              Normal
  01/16/2026 08 AM PST           37.34            359         -              Normal
  01/16/2026 09 AM PST           37.34            359         0              Normal
  01/16/2026 10 AM PST           37.34            359         0              Normal
  01/16/2026 11 AM PST           37.33            357         -              Normal
  01/16/2026 12 PM PST           37.34            359         +              Normal
  01/16/2026 01 PM PST           37.34            359         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  01/16/2026 02 PM PST           37.33            357                        Normal
  01/16/2026 03 PM PST           37.33            357         0              Normal
  01/16/2026 04 PM PST           37.32            354         -              Normal
  01/16/2026 05 PM PST           37.32            354         0              Normal
  01/16/2026 06 PM PST           37.32            354         0              Normal
  01/16/2026 07 PM PST           37.31            351         -              Normal
  01/16/2026 08 PM PST           37.31            351         0              Normal
  01/16/2026 09 PM PST           37.31            351         0              Normal
  01/16/2026 10 PM PST           37.31            351         0              Normal
  01/16/2026 11 PM PST           37.31            351         0              Normal
  01/17/2026 12 AM PST           37.31            351         0              Normal
  01/17/2026 01 AM PST           37.31            351         0              Normal
  01/17/2026 02 AM PST           37.31            351         0              Normal
  01/17/2026 03 AM PST           37.31            351         0              Normal
  01/17/2026 04 AM PST           37.31            351         0              Normal
  01/17/2026 05 AM PST           37.31            351         0              Normal
  01/17/2026 06 AM PST           37.31            351         0              Normal
  01/17/2026 07 AM PST           37.31            351         0              Normal
  01/17/2026 08 AM PST           37.31            351         0              Normal
  01/17/2026 09 AM PST           37.31            351         0              Normal
  01/17/2026 10 AM PST           37.31            351         0              Normal
  01/17/2026 11 AM PST           37.31            351         0              Normal
  01/17/2026 12 PM PST           37.31            351         0              Normal
  01/17/2026 01 PM PST           37.31            351         0              Normal
  01/17/2026 02 PM PST           37.31            351         0              Normal
  01/17/2026 03 PM PST           37.31            351         0              Normal
  01/17/2026 04 PM PST           37.31            351         0              Normal
  01/17/2026 05 PM PST           37.31            351         0              Normal
  01/17/2026 06 PM PST           37.31            351         0              Normal
  01/17/2026 07 PM PST           37.31            351         0              Normal
  01/17/2026 08 PM PST           37.31            351         0              Normal
  01/17/2026 09 PM PST           37.31            351         0              Normal
  01/17/2026 10 PM PST           37.30            349         -              Normal
  01/17/2026 11 PM PST           37.30            349         0              Normal
  01/18/2026 12 AM PST           37.30            349         0              Normal
  01/18/2026 01 AM PST           37.30            349         0              Normal
  01/18/2026 02 AM PST           37.30            349         0              Normal
  01/18/2026 03 AM PST           37.30            349         0              Normal
  01/18/2026 04 AM PST           37.30            349         0              Normal
  01/18/2026 05 AM PST           37.30            349         0              Normal
  01/18/2026 06 AM PST           37.30            349         0              Normal
  01/18/2026 07 AM PST           37.30            349         0              Normal
  01/18/2026 08 AM PST           37.30            349         0              Normal
  01/18/2026 09 AM PST           37.30            349         0              Normal
  01/18/2026 10 AM PST           37.30            349         0              Normal
  01/18/2026 11 AM PST           37.30            349         0              Normal
  01/18/2026 12 PM PST           37.30            349         0              Normal
  01/18/2026 01 PM PST           37.30            349         0              Normal
  01/18/2026 02 PM PST           37.29            346         -              Normal
  01/18/2026 03 PM PST           37.29            346         0              Normal
  01/18/2026 04 PM PST           37.29            346         0              Normal
  01/18/2026 05 PM PST           37.29            346         0              Normal
  01/18/2026 06 PM PST           37.29            346         0              Normal
  01/18/2026 07 PM PST           37.29            346         0              Normal
  01/18/2026 08 PM PST           37.29            346         0              Normal
  01/18/2026 09 PM PST           37.29            346         0              Normal
  01/18/2026 10 PM PST           37.29            346         0              Normal
  01/18/2026 11 PM PST           37.29            346         0              Normal
  01/19/2026 12 AM PST           37.29            346         0              Normal
  01/19/2026 01 AM PST           37.29            346         0              Normal
  01/19/2026 02 AM PST           37.29            346         0              Normal
  01/19/2026 03 AM PST           37.29            346         0              Normal
  01/19/2026 04 AM PST           37.29            346         0              Normal
  01/19/2026 05 AM PST           37.28            344         -              Normal
  01/19/2026 06 AM PST           37.28            344         0              Normal
  01/19/2026 07 AM PST           37.28            344         0              Normal
  01/19/2026 08 AM PST           37.28            344         0              Normal
  01/19/2026 09 AM PST           37.28            344         0              Normal
  01/19/2026 10 AM PST           37.28            344         0              Normal
  01/19/2026 11 AM PST           37.28            344         0              Normal
  01/19/2026 12 PM PST           37.28            344         0              Normal
  01/19/2026 01 PM PST           37.28            344         0              Normal
  01/19/2026 02 PM PST           37.28            344         0              Normal
  01/19/2026 03 PM PST           37.28            344         0              Normal
  01/19/2026 04 PM PST           37.28            344         0              Normal
  01/19/2026 05 PM PST           37.28            344         0              Normal
  01/19/2026 06 PM PST           37.28            344         0              Normal
  01/19/2026 07 PM PST           37.28            344         0              Normal
  01/19/2026 08 PM PST           37.28            344         0              Normal
  01/19/2026 09 PM PST           37.28            344         0              Normal
  01/19/2026 10 PM PST           37.28            344         0              Normal
  01/19/2026 11 PM PST           37.27            341         -              Normal
  01/20/2026 12 AM PST           37.27            341         0              Normal
  01/20/2026 01 AM PST           37.27            341         0              Normal
  01/20/2026 02 AM PST           37.27            341         0              Normal
  01/20/2026 03 AM PST           37.27            341         0              Normal
  01/20/2026 04 AM PST           37.27            341         0              Normal
  01/20/2026 05 AM PST           37.27            341         0              Normal
  01/20/2026 06 AM PST           37.27            341         0              Normal
  01/20/2026 07 AM PST           37.27            341         0              Normal
  01/20/2026 08 AM PST           37.27            341         0              Normal
  01/20/2026 09 AM PST           37.27            341         0              Normal
  01/20/2026 10 AM PST           37.27            341         0              Normal
  01/20/2026 11 AM PST           37.27            341         0              Normal
  01/20/2026 12 PM PST           37.27            341         0              Normal
  01/20/2026 01 PM PST           37.27            341         0              Normal
  01/20/2026 02 PM PST           37.27            341         0              Normal
  01/20/2026 03 PM PST           37.27            341         0              Normal
  01/20/2026 04 PM PST           37.27            341         0              Normal
  01/20/2026 05 PM PST           37.27            341         0              Normal
  01/20/2026 06 PM PST           37.27            341         0              Normal
  01/20/2026 07 PM PST           37.26            339         -              Normal
  01/20/2026 08 PM PST           37.26            339         0              Normal
  01/20/2026 09 PM PST           37.26            339         0              Normal
  01/20/2026 10 PM PST           37.26            339         0              Normal
  01/20/2026 11 PM PST           37.26            339         0              Normal
  01/21/2026 12 AM PST           37.26            339         0              Normal
  01/21/2026 01 AM PST           37.26            339         0              Normal
  01/21/2026 02 AM PST           37.26            339         0              Normal
  01/21/2026 03 AM PST           37.26            339         0              Normal
  01/21/2026 04 AM PST           37.26            339         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.