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: Mar 18 2026 at 1:02 PM PDTNext Issuance: Mar 19 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:  03/18/2026 at 01:02 PM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  03/14/2026 at 03:00 AM PDT
# Maximum Observed Stage:                       44.62 Feet
# Maximum Observed Flow:                        3096 cfs
#
# Earliest Date & Time of Maximum Forecast:     03/18/2026 at 01:00 PM PDT
# Maximum Forecast Stage:                       43.99 Feet
# Maximum Forecast Flow:                        2807 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  03/13/2026 01 PM PDT           44.60           3087                        Normal
  03/13/2026 02 PM PDT           44.60           3087         0              Normal
  03/13/2026 03 PM PDT           44.62           3096         +              Normal
  03/13/2026 04 PM PDT           44.60           3087         -              Normal
  03/13/2026 05 PM PDT           44.61           3092         +              Normal
  03/13/2026 06 PM PDT           44.61           3092         0              Normal
  03/13/2026 07 PM PDT           44.60           3087         -              Normal
  03/13/2026 08 PM PDT           44.60           3087         0              Normal
  03/13/2026 09 PM PDT           44.62           3096         +              Normal
  03/13/2026 10 PM PDT           44.60           3087         -              Normal
  03/13/2026 11 PM PDT           44.59           3082         -              Normal
  03/14/2026 12 AM PDT           44.61           3092         +              Normal
  03/14/2026 01 AM PDT           44.62           3096         +              Normal
  03/14/2026 02 AM PDT           44.61           3092         -              Normal
  03/14/2026 03 AM PDT           44.62           3096         +              Normal
  03/14/2026 04 AM PDT           44.61           3092         -              Normal
  03/14/2026 05 AM PDT           44.61           3092         0              Normal
  03/14/2026 06 AM PDT           44.60           3087         -              Normal
  03/14/2026 07 AM PDT           44.60           3087         0              Normal
  03/14/2026 08 AM PDT           44.59           3082         -              Normal
  03/14/2026 09 AM PDT           44.57           3073         -              Normal
  03/14/2026 10 AM PDT           44.59           3082         +              Normal
  03/14/2026 11 AM PDT           44.57           3073         -              Normal
  03/14/2026 12 PM PDT           44.56           3068         -              Normal
  03/14/2026 01 PM PDT           44.56           3068         0              Normal
  03/14/2026 02 PM PDT           44.56           3068         0              Normal
  03/14/2026 03 PM PDT           44.57           3073         +              Normal
  03/14/2026 04 PM PDT           44.57           3073         0              Normal
  03/14/2026 05 PM PDT           44.57           3073         0              Normal
  03/14/2026 06 PM PDT           44.56           3068         -              Normal
  03/14/2026 07 PM PDT           44.54           3059         -              Normal
  03/14/2026 08 PM PDT           44.55           3063         +              Normal
  03/14/2026 09 PM PDT           44.54           3059         -              Normal
  03/14/2026 10 PM PDT           44.54           3059         0              Normal
  03/14/2026 11 PM PDT           44.54           3059         0              Normal
  03/15/2026 12 AM PDT           44.55           3063         +              Normal
  03/15/2026 01 AM PDT           44.54           3059         -              Normal
  03/15/2026 02 AM PDT           44.54           3059         0              Normal
  03/15/2026 03 AM PDT           44.54           3059         0              Normal
  03/15/2026 04 AM PDT           44.54           3059         0              Normal
  03/15/2026 05 AM PDT           44.54           3059         0              Normal
  03/15/2026 06 AM PDT           44.54           3059         0              Normal
  03/15/2026 07 AM PDT           44.53           3054         -              Normal
  03/15/2026 08 AM PDT           44.55           3063         +              Normal
  03/15/2026 09 AM PDT           44.54           3059         -              Normal
  03/15/2026 10 AM PDT           44.54           3059         0              Normal
  03/15/2026 11 AM PDT           44.54           3059         0              Normal
  03/15/2026 12 PM PDT           44.55           3063         +              Normal
  03/15/2026 01 PM PDT           44.55           3063         0              Normal
  03/15/2026 02 PM PDT           44.56           3068         +              Normal
  03/15/2026 03 PM PDT           44.54           3059         -              Normal
  03/15/2026 04 PM PDT           44.56           3068         +              Normal
  03/15/2026 05 PM PDT           44.56           3068         0              Normal
  03/15/2026 06 PM PDT           44.56           3068         0              Normal
  03/15/2026 07 PM PDT           44.56           3068         0              Normal
  03/15/2026 08 PM PDT           44.57           3073         +              Normal
  03/15/2026 09 PM PDT           44.56           3068         -              Normal
  03/15/2026 10 PM PDT           44.55           3063         -              Normal
  03/15/2026 11 PM PDT           44.56           3068         +              Normal
  03/16/2026 12 AM PDT           44.54           3059         -              Normal
  03/16/2026 01 AM PDT           44.55           3063         +              Normal
  03/16/2026 02 AM PDT           44.53           3054         -              Normal
  03/16/2026 03 AM PDT           44.53           3054         0              Normal
  03/16/2026 04 AM PDT           44.53           3054         0              Normal
  03/16/2026 05 AM PDT           44.52           3049         -              Normal
  03/16/2026 06 AM PDT           44.53           3054         +              Normal
  03/16/2026 07 AM PDT           44.52           3049         -              Normal
  03/16/2026 08 AM PDT           44.51           3045         -              Normal
  03/16/2026 09 AM PDT           44.51           3045         0              Normal
  03/16/2026 10 AM PDT           44.51           3045         0              Normal
  03/16/2026 11 AM PDT           44.51           3045         0              Normal
  03/16/2026 12 PM PDT           44.51           3045         0              Normal
  03/16/2026 01 PM PDT           44.51           3045         0              Normal
  03/16/2026 02 PM PDT           44.50           3040         -              Normal
  03/16/2026 03 PM PDT           44.51           3045         +              Normal
  03/16/2026 04 PM PDT           44.51           3045         0              Normal
  03/16/2026 05 PM PDT           44.52           3049         +              Normal
  03/16/2026 06 PM PDT           44.50           3040         -              Normal
  03/16/2026 07 PM PDT           44.51           3045         +              Normal
  03/16/2026 08 PM PDT           44.49           3035         -              Normal
  03/16/2026 09 PM PDT           44.50           3040         +              Normal
  03/16/2026 10 PM PDT           44.50           3040         0              Normal
  03/16/2026 11 PM PDT           44.50           3040         0              Normal
  03/17/2026 12 AM PDT           44.51           3045         +              Normal
  03/17/2026 01 AM PDT           44.52           3049         +              Normal
  03/17/2026 02 AM PDT           44.52           3049         0              Normal
  03/17/2026 03 AM PDT           44.52           3049         0              Normal
  03/17/2026 04 AM PDT           44.53           3054         +              Normal
  03/17/2026 05 AM PDT           44.53           3054         0              Normal
  03/17/2026 06 AM PDT           44.53           3054         0              Normal
  03/17/2026 07 AM PDT           44.54           3059         +              Normal
  03/17/2026 08 AM PDT           44.55           3063         +              Normal
  03/17/2026 09 AM PDT           44.55           3063         0              Normal
  03/17/2026 10 AM PDT           44.56           3068         +              Normal
  03/17/2026 11 AM PDT           44.56           3068         0              Normal
  03/17/2026 12 PM PDT           44.58           3078         +              Normal
  03/17/2026 01 PM PDT           44.60           3087         +              Normal
  03/17/2026 02 PM PDT           44.59           3082         -              Normal
  03/17/2026 03 PM PDT           44.58           3078         -              Normal
  03/17/2026 04 PM PDT           44.61           3092         +              Normal
  03/17/2026 05 PM PDT           44.59           3082         -              Normal
  03/17/2026 06 PM PDT           44.59           3082         0              Normal
  03/17/2026 07 PM PDT           44.60           3087         +              Normal
  03/17/2026 08 PM PDT           44.60           3087         0              Normal
  03/17/2026 09 PM PDT           44.58           3078         -              Normal
  03/17/2026 10 PM PDT           44.61           3092         +              Normal
  03/17/2026 11 PM PDT           44.59           3082         -              Normal
  03/18/2026 12 AM PDT           44.60           3087         +              Normal
  03/18/2026 01 AM PDT           44.60           3087         0              Normal
  03/18/2026 02 AM PDT           44.59           3082         -              Normal
  03/18/2026 03 AM PDT           44.58           3078         -              Normal
  03/18/2026 04 AM PDT           44.54           3059         -              Normal
  03/18/2026 05 AM PDT           44.51           3045         -              Normal
  03/18/2026 06 AM PDT           44.46           3021         -              Normal
  03/18/2026 07 AM PDT           44.40           2993         -              Normal
  03/18/2026 08 AM PDT           44.34           2966         -              Normal
  03/18/2026 09 AM PDT           44.27           2934         -              Normal
  03/18/2026 10 AM PDT           44.20           2902         -              Normal
  03/18/2026 11 AM PDT           44.12           2865         -              Normal
  03/18/2026 12 PM PDT           44.05           2834         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  03/18/2026 01 PM PDT           43.99           2807                        Normal
  03/18/2026 02 PM PDT           43.93           2780         -              Normal
  03/18/2026 03 PM PDT           43.88           2757         -              Normal
  03/18/2026 04 PM PDT           43.84           2739         -              Normal
  03/18/2026 05 PM PDT           43.81           2726         -              Normal
  03/18/2026 06 PM PDT           43.78           2712         -              Normal
  03/18/2026 07 PM PDT           43.75           2699         -              Normal
  03/18/2026 08 PM PDT           43.72           2686         -              Normal
  03/18/2026 09 PM PDT           43.69           2672         -              Normal
  03/18/2026 10 PM PDT           43.67           2664         -              Normal
  03/18/2026 11 PM PDT           43.65           2655         -              Normal
  03/19/2026 12 AM PDT           43.60           2632         -              Normal
  03/19/2026 01 AM PDT           43.52           2597         -              Normal
  03/19/2026 02 AM PDT           43.43           2558         -              Normal
  03/19/2026 03 AM PDT           43.34           2518         -              Normal
  03/19/2026 04 AM PDT           43.25           2479         -              Normal
  03/19/2026 05 AM PDT           43.18           2449         -              Normal
  03/19/2026 06 AM PDT           43.11           2418         -              Normal
  03/19/2026 07 AM PDT           43.05           2392         -              Normal
  03/19/2026 08 AM PDT           43.00           2371         -              Normal
  03/19/2026 09 AM PDT           42.95           2349         -              Normal
  03/19/2026 10 AM PDT           42.90           2328         -              Normal
  03/19/2026 11 AM PDT           42.86           2311         -              Normal
  03/19/2026 12 PM PDT           42.83           2298         -              Normal
  03/19/2026 01 PM PDT           42.80           2285         -              Normal
  03/19/2026 02 PM PDT           42.77           2273         -              Normal
  03/19/2026 03 PM PDT           42.74           2260         -              Normal
  03/19/2026 04 PM PDT           42.72           2251         -              Normal
  03/19/2026 05 PM PDT           42.70           2243         -              Normal
  03/19/2026 06 PM PDT           42.68           2235         -              Normal
  03/19/2026 07 PM PDT           42.66           2226         -              Normal
  03/19/2026 08 PM PDT           42.65           2222         -              Normal
  03/19/2026 09 PM PDT           42.64           2218         -              Normal
  03/19/2026 10 PM PDT           42.62           2209         -              Normal
  03/19/2026 11 PM PDT           42.59           2197         -              Normal
  03/20/2026 12 AM PDT           42.53           2171         -              Normal
  03/20/2026 01 AM PDT           42.46           2142         -              Normal
  03/20/2026 02 AM PDT           42.38           2109         -              Normal
  03/20/2026 03 AM PDT           42.30           2076         -              Normal
  03/20/2026 04 AM PDT           42.23           2047         -              Normal
  03/20/2026 05 AM PDT           42.16           2018         -              Normal
  03/20/2026 06 AM PDT           42.10           1994         -              Normal
  03/20/2026 07 AM PDT           42.05           1973         -              Normal
  03/20/2026 08 AM PDT           42.00           1953         -              Normal
  03/20/2026 09 AM PDT           41.96           1937         -              Normal
  03/20/2026 10 AM PDT           41.92           1920         -              Normal
  03/20/2026 11 AM PDT           41.89           1908         -              Normal
  03/20/2026 12 PM PDT           41.85           1892         -              Normal
  03/20/2026 01 PM PDT           41.83           1884         -              Normal
  03/20/2026 02 PM PDT           41.80           1872         -              Normal
  03/20/2026 03 PM PDT           41.78           1864         -              Normal
  03/20/2026 04 PM PDT           41.76           1856         -              Normal
  03/20/2026 05 PM PDT           41.74           1848         -              Normal
  03/20/2026 06 PM PDT           41.73           1844         -              Normal
  03/20/2026 07 PM PDT           41.71           1836         -              Normal
  03/20/2026 08 PM PDT           41.70           1832         -              Normal
  03/20/2026 09 PM PDT           41.69           1828         -              Normal
  03/20/2026 10 PM PDT           41.68           1824         -              Normal
  03/20/2026 11 PM PDT           41.65           1812         -              Normal
  03/21/2026 12 AM PDT           41.59           1788         -              Normal
  03/21/2026 01 AM PDT           41.53           1765         -              Normal
  03/21/2026 02 AM PDT           41.46           1737         -              Normal
  03/21/2026 03 AM PDT           41.38           1706         -              Normal
  03/21/2026 04 AM PDT           41.31           1679         -              Normal
  03/21/2026 05 AM PDT           41.25           1655         -              Normal
  03/21/2026 06 AM PDT           41.19           1632         -              Normal
  03/21/2026 07 AM PDT           41.14           1613         -              Normal
  03/21/2026 08 AM PDT           41.10           1597         -              Normal
  03/21/2026 09 AM PDT           41.06           1582         -              Normal
  03/21/2026 10 AM PDT           41.02           1567         -              Normal
  03/21/2026 11 AM PDT           40.99           1555         -              Normal
  03/21/2026 12 PM PDT           40.96           1544         -              Normal
  03/21/2026 01 PM PDT           40.93           1533         -              Normal
  03/21/2026 02 PM PDT           40.91           1525         -              Normal
  03/21/2026 03 PM PDT           40.89           1518         -              Normal
  03/21/2026 04 PM PDT           40.87           1510         -              Normal
  03/21/2026 05 PM PDT           40.85           1502         -              Normal
  03/21/2026 06 PM PDT           40.84           1499         -              Normal
  03/21/2026 07 PM PDT           40.82           1491         -              Normal
  03/21/2026 08 PM PDT           40.81           1487         -              Normal
  03/21/2026 09 PM PDT           40.80           1484         -              Normal
  03/21/2026 10 PM PDT           40.79           1480         -              Normal
  03/21/2026 11 PM PDT           40.76           1469         -              Normal
  03/22/2026 12 AM PDT           40.72           1454         -              Normal
  03/22/2026 01 AM PDT           40.66           1431         -              Normal
  03/22/2026 02 AM PDT           40.59           1405         -              Normal
  03/22/2026 03 AM PDT           40.52           1380         -              Normal
  03/22/2026 04 AM PDT           40.46           1358         -              Normal
  03/22/2026 05 AM PDT           40.40           1336         -              Normal
  03/22/2026 06 AM PDT           40.35           1318         -              Normal
  03/22/2026 07 AM PDT           40.30           1299         -              Normal
  03/22/2026 08 AM PDT           40.26           1285         -              Normal
  03/22/2026 09 AM PDT           40.23           1274         -              Normal
  03/22/2026 10 AM PDT           40.19           1260         -              Normal
  03/22/2026 11 AM PDT           40.16           1249         -              Normal
  03/22/2026 12 PM PDT           40.13           1238         -              Normal
  03/22/2026 01 PM PDT           40.11           1231         -              Normal
  03/22/2026 02 PM PDT           40.09           1224         -              Normal
  03/22/2026 03 PM PDT           40.07           1217         -              Normal
  03/22/2026 04 PM PDT           40.05           1210         -              Normal
  03/22/2026 05 PM PDT           40.04           1207         -              Normal
  03/22/2026 06 PM PDT           40.02           1199         -              Normal
  03/22/2026 07 PM PDT           40.01           1196         -              Normal
  03/22/2026 08 PM PDT           40.00           1192         -              Normal
  03/22/2026 09 PM PDT           39.99           1189         -              Normal
  03/22/2026 10 PM PDT           39.98           1185         -              Normal
  03/22/2026 11 PM PDT           39.97           1182         -              Normal
  03/23/2026 12 AM PDT           39.97           1182         0              Normal
  03/23/2026 01 AM PDT           39.96           1178         -              Normal
  03/23/2026 02 AM PDT           39.95           1175         -              Normal
  03/23/2026 03 AM PDT           39.95           1175         0              Normal
  03/23/2026 04 AM PDT           39.94           1171         -              Normal
  03/23/2026 05 AM PDT           39.94           1171         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.