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 27 2026 at 7:18 AM PDTNext Issuance: Mar 27 2026 at 3:00 PM 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:  03/27/2026 at 07:18 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  03/22/2026 at 07:00 AM PDT
# Maximum Observed Stage:                       40.65 Feet
# Maximum Observed Flow:                        1428 cfs
#
# Earliest Date & Time of Maximum Forecast:     03/27/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       37.82 Feet
# Maximum Forecast Flow:                        490 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  03/22/2026 07 AM PDT           40.65           1428                        Normal
  03/22/2026 08 AM PDT           40.61           1413         -              Normal
  03/22/2026 09 AM PDT           40.56           1394         -              Normal
  03/22/2026 10 AM PDT           40.52           1380         -              Normal
  03/22/2026 11 AM PDT           40.48           1365         -              Normal
  03/22/2026 12 PM PDT           40.43           1347         -              Normal
  03/22/2026 01 PM PDT           40.40           1336         -              Normal
  03/22/2026 02 PM PDT           40.38           1328         -              Normal
  03/22/2026 03 PM PDT           40.34           1314         -              Normal
  03/22/2026 04 PM PDT           40.32           1307         -              Normal
  03/22/2026 05 PM PDT           40.30           1299         -              Normal
  03/22/2026 06 PM PDT           40.28           1292         -              Normal
  03/22/2026 07 PM PDT           40.27           1289         -              Normal
  03/22/2026 08 PM PDT           40.24           1278         -              Normal
  03/22/2026 09 PM PDT           40.25           1281         +              Normal
  03/22/2026 10 PM PDT           40.24           1278         -              Normal
  03/22/2026 11 PM PDT           40.22           1271         -              Normal
  03/23/2026 12 AM PDT           40.20           1263         -              Normal
  03/23/2026 01 AM PDT           40.17           1253         -              Normal
  03/23/2026 02 AM PDT           40.14           1242         -              Normal
  03/23/2026 03 AM PDT           40.09           1224         -              Normal
  03/23/2026 04 AM PDT           40.03           1203         -              Normal
  03/23/2026 05 AM PDT           39.98           1185         -              Normal
  03/23/2026 06 AM PDT           39.94           1171         -              Normal
  03/23/2026 07 AM PDT           39.90           1157         -              Normal
  03/23/2026 08 AM PDT           39.84           1136         -              Normal
  03/23/2026 09 AM PDT           39.82           1129         -              Normal
  03/23/2026 10 AM PDT           39.77           1112         -              Normal
  03/23/2026 11 AM PDT           39.75           1105         -              Normal
  03/23/2026 12 PM PDT           39.71           1091         -              Normal
  03/23/2026 01 PM PDT           39.68           1081         -              Normal
  03/23/2026 02 PM PDT           39.66           1074         -              Normal
  03/23/2026 03 PM PDT           39.64           1067         -              Normal
  03/23/2026 04 PM PDT           39.62           1061         -              Normal
  03/23/2026 05 PM PDT           39.60           1054         -              Normal
  03/23/2026 06 PM PDT           39.58           1047         -              Normal
  03/23/2026 07 PM PDT           39.56           1040         -              Normal
  03/23/2026 08 PM PDT           39.54           1034         -              Normal
  03/23/2026 09 PM PDT           39.53           1030         -              Normal
  03/23/2026 10 PM PDT           39.53           1030         0              Normal
  03/23/2026 11 PM PDT           39.53           1030         0              Normal
  03/24/2026 12 AM PDT           39.51           1023         -              Normal
  03/24/2026 01 AM PDT           39.49           1017         -              Normal
  03/24/2026 02 AM PDT           39.47           1010         -              Normal
  03/24/2026 03 AM PDT           39.44           1000         -              Normal
  03/24/2026 04 AM PDT           39.40            986         -              Normal
  03/24/2026 05 AM PDT           39.36            973         -              Normal
  03/24/2026 06 AM PDT           39.31            957         -              Normal
  03/24/2026 07 AM PDT           39.27            943         -              Normal
  03/24/2026 08 AM PDT           39.22            927         -              Normal
  03/24/2026 09 AM PDT           39.19            917         -              Normal
  03/24/2026 10 AM PDT           39.15            904         -              Normal
  03/24/2026 11 AM PDT           39.12            894         -              Normal
  03/24/2026 12 PM PDT           39.09            885         -              Normal
  03/24/2026 01 PM PDT           39.06            875         -              Normal
  03/24/2026 02 PM PDT           39.03            865         -              Normal
  03/24/2026 03 PM PDT           39.02            862         -              Normal
  03/24/2026 04 PM PDT           38.99            852         -              Normal
  03/24/2026 05 PM PDT           38.97            846         -              Normal
  03/24/2026 06 PM PDT           38.96            842         -              Normal
  03/24/2026 07 PM PDT           38.95            839         -              Normal
  03/24/2026 08 PM PDT           38.92            829         -              Normal
  03/24/2026 09 PM PDT           38.90            822         -              Normal
  03/24/2026 10 PM PDT           38.88            816         -              Normal
  03/24/2026 11 PM PDT           38.87            813         -              Normal
  03/25/2026 12 AM PDT           38.85            806         -              Normal
  03/25/2026 01 AM PDT           38.84            803         -              Normal
  03/25/2026 02 AM PDT           38.82            796         -              Normal
  03/25/2026 03 AM PDT           38.82            796         0              Normal
  03/25/2026 04 AM PDT           38.80            790         -              Normal
  03/25/2026 05 AM PDT           38.79            786         -              Normal
  03/25/2026 06 AM PDT           38.78            783         -              Normal
  03/25/2026 07 AM PDT           38.76            777         -              Normal
  03/25/2026 08 AM PDT           38.75            773         -              Normal
  03/25/2026 09 AM PDT           38.73            767         -              Normal
  03/25/2026 10 AM PDT           38.71            760         -              Normal
  03/25/2026 11 AM PDT           38.69            754         -              Normal
  03/25/2026 12 PM PDT           38.66            744         -              Normal
  03/25/2026 01 PM PDT           38.64            738         -              Normal
  03/25/2026 02 PM PDT           38.62            732         -              Normal
  03/25/2026 03 PM PDT           38.59            722         -              Normal
  03/25/2026 04 PM PDT           38.57            716         -              Normal
  03/25/2026 05 PM PDT           38.55            709         -              Normal
  03/25/2026 06 PM PDT           38.51            697         -              Normal
  03/25/2026 07 PM PDT           38.49            690         -              Normal
  03/25/2026 08 PM PDT           38.46            681         -              Normal
  03/25/2026 09 PM PDT           38.45            678         -              Normal
  03/25/2026 10 PM PDT           38.42            669         -              Normal
  03/25/2026 11 PM PDT           38.40            662         -              Normal
  03/26/2026 12 AM PDT           38.38            656         -              Normal
  03/26/2026 01 AM PDT           38.36            650         -              Normal
  03/26/2026 02 AM PDT           38.34            644         -              Normal
  03/26/2026 03 AM PDT           38.31            635         -              Normal
  03/26/2026 04 AM PDT           38.29            629         -              Normal
  03/26/2026 05 AM PDT           38.29            629         0              Normal
  03/26/2026 06 AM PDT           38.28            626         -              Normal
  03/26/2026 07 AM PDT           38.26            619         -              Normal
  03/26/2026 08 AM PDT           38.23            610         -              Normal
  03/26/2026 09 AM PDT           38.20            601         -              Normal
  03/26/2026 10 AM PDT           38.16            589         -              Normal
  03/26/2026 11 AM PDT           38.13            580         -              Normal
  03/26/2026 12 PM PDT           38.11            574         -              Normal
  03/26/2026 01 PM PDT           38.08            565         -              Normal
  03/26/2026 02 PM PDT           38.06            560         -              Normal
  03/26/2026 03 PM PDT           38.05            557         -              Normal
  03/26/2026 04 PM PDT           38.04            554         -              Normal
  03/26/2026 05 PM PDT           38.02            548         -              Normal
  03/26/2026 06 PM PDT           38.00            542         -              Normal
  03/26/2026 07 PM PDT           37.99            539         -              Normal
  03/26/2026 08 PM PDT           37.98            536         -              Normal
  03/26/2026 09 PM PDT           37.97            533         -              Normal
  03/26/2026 10 PM PDT           37.96            530         -              Normal
  03/26/2026 11 PM PDT           37.97            533         +              Normal
  03/27/2026 12 AM PDT           37.97            533         0              Normal
  03/27/2026 01 AM PDT           37.96            530         -              Normal
  03/27/2026 02 AM PDT           37.96            530         0              Normal
  03/27/2026 03 AM PDT           37.94            524         -              Normal
  03/27/2026 04 AM PDT           37.93            522         -              Normal
  03/27/2026 05 AM PDT           37.90            513         -              Normal
  03/27/2026 06 AM PDT           37.88            507         -              Normal
  03/27/2026 07 AM PDT           37.85            499         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  03/27/2026 08 AM PDT           37.82            490                        Normal
  03/27/2026 09 AM PDT           37.80            484         -              Normal
  03/27/2026 10 AM PDT           37.78            479         -              Normal
  03/27/2026 11 AM PDT           37.76            473         -              Normal
  03/27/2026 12 PM PDT           37.74            467         -              Normal
  03/27/2026 01 PM PDT           37.72            462         -              Normal
  03/27/2026 02 PM PDT           37.71            459         -              Normal
  03/27/2026 03 PM PDT           37.70            456         -              Normal
  03/27/2026 04 PM PDT           37.68            451         -              Normal
  03/27/2026 05 PM PDT           37.67            448         -              Normal
  03/27/2026 06 PM PDT           37.66            445         -              Normal
  03/27/2026 07 PM PDT           37.66            445         0              Normal
  03/27/2026 08 PM PDT           37.65            442         -              Normal
  03/27/2026 09 PM PDT           37.64            440         -              Normal
  03/27/2026 10 PM PDT           37.63            437         -              Normal
  03/27/2026 11 PM PDT           37.62            434         -              Normal
  03/28/2026 12 AM PDT           37.62            434         0              Normal
  03/28/2026 01 AM PDT           37.62            434         0              Normal
  03/28/2026 02 AM PDT           37.61            431         -              Normal
  03/28/2026 03 AM PDT           37.59            426         -              Normal
  03/28/2026 04 AM PDT           37.57            420         -              Normal
  03/28/2026 05 AM PDT           37.55            415         -              Normal
  03/28/2026 06 AM PDT           37.52            407         -              Normal
  03/28/2026 07 AM PDT           37.51            404         -              Normal
  03/28/2026 08 AM PDT           37.49            399         -              Normal
  03/28/2026 09 AM PDT           37.48            396         -              Normal
  03/28/2026 10 AM PDT           37.46            391         -              Normal
  03/28/2026 11 AM PDT           37.45            388         -              Normal
  03/28/2026 12 PM PDT           37.44            386         -              Normal
  03/28/2026 01 PM PDT           37.43            383         -              Normal
  03/28/2026 02 PM PDT           37.42            380         -              Normal
  03/28/2026 03 PM PDT           37.41            378         -              Normal
  03/28/2026 04 PM PDT           37.41            378         0              Normal
  03/28/2026 05 PM PDT           37.40            375         -              Normal
  03/28/2026 06 PM PDT           37.39            372         -              Normal
  03/28/2026 07 PM PDT           37.39            372         0              Normal
  03/28/2026 08 PM PDT           37.38            370         -              Normal
  03/28/2026 09 PM PDT           37.38            370         0              Normal
  03/28/2026 10 PM PDT           37.38            370         0              Normal
  03/28/2026 11 PM PDT           37.38            370         0              Normal
  03/29/2026 12 AM PDT           37.37            367         -              Normal
  03/29/2026 01 AM PDT           37.37            367         0              Normal
  03/29/2026 02 AM PDT           37.37            367         0              Normal
  03/29/2026 03 AM PDT           37.37            367         0              Normal
  03/29/2026 04 AM PDT           37.36            364         -              Normal
  03/29/2026 05 AM PDT           37.36            364         0              Normal
  03/29/2026 06 AM PDT           37.36            364         0              Normal
  03/29/2026 07 AM PDT           37.36            364         0              Normal
  03/29/2026 08 AM PDT           37.36            364         0              Normal
  03/29/2026 09 AM PDT           37.36            364         0              Normal
  03/29/2026 10 AM PDT           37.35            362         -              Normal
  03/29/2026 11 AM PDT           37.35            362         0              Normal
  03/29/2026 12 PM PDT           37.35            362         0              Normal
  03/29/2026 01 PM PDT           37.35            362         0              Normal
  03/29/2026 02 PM PDT           37.35            362         0              Normal
  03/29/2026 03 PM PDT           37.35            362         0              Normal
  03/29/2026 04 PM PDT           37.35            362         0              Normal
  03/29/2026 05 PM PDT           37.35            362         0              Normal
  03/29/2026 06 PM PDT           37.35            362         0              Normal
  03/29/2026 07 PM PDT           37.35            362         0              Normal
  03/29/2026 08 PM PDT           37.35            362         0              Normal
  03/29/2026 09 PM PDT           37.35            362         0              Normal
  03/29/2026 10 PM PDT           37.35            362         0              Normal
  03/29/2026 11 PM PDT           37.35            362         0              Normal
  03/30/2026 12 AM PDT           37.35            362         0              Normal
  03/30/2026 01 AM PDT           37.35            362         0              Normal
  03/30/2026 02 AM PDT           37.35            362         0              Normal
  03/30/2026 03 AM PDT           37.35            362         0              Normal
  03/30/2026 04 AM PDT           37.35            362         0              Normal
  03/30/2026 05 AM PDT           37.35            362         0              Normal
  03/30/2026 06 AM PDT           37.35            362         0              Normal
  03/30/2026 07 AM PDT           37.35            362         0              Normal
  03/30/2026 08 AM PDT           37.35            362         0              Normal
  03/30/2026 09 AM PDT           37.35            362         0              Normal
  03/30/2026 10 AM PDT           37.35            362         0              Normal
  03/30/2026 11 AM PDT           37.35            362         0              Normal
  03/30/2026 12 PM PDT           37.35            362         0              Normal
  03/30/2026 01 PM PDT           37.35            362         0              Normal
  03/30/2026 02 PM PDT           37.35            362         0              Normal
  03/30/2026 03 PM PDT           37.35            362         0              Normal
  03/30/2026 04 PM PDT           37.35            362         0              Normal
  03/30/2026 05 PM PDT           37.35            362         0              Normal
  03/30/2026 06 PM PDT           37.35            362         0              Normal
  03/30/2026 07 PM PDT           37.35            362         0              Normal
  03/30/2026 08 PM PDT           37.35            362         0              Normal
  03/30/2026 09 PM PDT           37.35            362         0              Normal
  03/30/2026 10 PM PDT           37.35            362         0              Normal
  03/30/2026 11 PM PDT           37.35            362         0              Normal
  03/31/2026 12 AM PDT           37.35            362         0              Normal
  03/31/2026 01 AM PDT           37.35            362         0              Normal
  03/31/2026 02 AM PDT           37.35            362         0              Normal
  03/31/2026 03 AM PDT           37.35            362         0              Normal
  03/31/2026 04 AM PDT           37.35            362         0              Normal
  03/31/2026 05 AM PDT           37.35            362         0              Normal
  03/31/2026 06 AM PDT           37.35            362         0              Normal
  03/31/2026 07 AM PDT           37.35            362         0              Normal
  03/31/2026 08 AM PDT           37.35            362         0              Normal
  03/31/2026 09 AM PDT           37.35            362         0              Normal
  03/31/2026 10 AM PDT           37.35            362         0              Normal
  03/31/2026 11 AM PDT           37.35            362         0              Normal
  03/31/2026 12 PM PDT           37.35            362         0              Normal
  03/31/2026 01 PM PDT           37.35            362         0              Normal
  03/31/2026 02 PM PDT           37.35            362         0              Normal
  03/31/2026 03 PM PDT           37.35            362         0              Normal
  03/31/2026 04 PM PDT           37.35            362         0              Normal
  03/31/2026 05 PM PDT           37.35            362         0              Normal
  03/31/2026 06 PM PDT           37.35            362         0              Normal
  03/31/2026 07 PM PDT           37.35            362         0              Normal
  03/31/2026 08 PM PDT           37.35            362         0              Normal
  03/31/2026 09 PM PDT           37.35            362         0              Normal
  03/31/2026 10 PM PDT           37.35            362         0              Normal
  03/31/2026 11 PM PDT           37.35            362         0              Normal
  04/01/2026 12 AM PDT           37.35            362         0              Normal
  04/01/2026 01 AM PDT           37.35            362         0              Normal
  04/01/2026 02 AM PDT           37.35            362         0              Normal
  04/01/2026 03 AM PDT           37.35            362         0              Normal
  04/01/2026 04 AM PDT           37.35            362         0              Normal
  04/01/2026 05 AM PDT           37.35            362         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.