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TUOLUMNE RIVER - MODESTO (MDSC1)
| Latitude: 37.63º N | Longitude: 120.99º W | Elevation: 60 Feet | | Forecast Type: Official Location |
| Location: Stanislaus County in California | Bulletin Group: San Joaquin | River Group: San Joaquin |
| Issuance Time: | Apr 10 2026 at 1:25 PM PDT | Next Issuance: | Apr 11 2026 at 9:00 AM PDT
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| Action/Monitor: 50.5 Feet | Minor Flood: 55.0 Feet | Moderate Flood: 66.0 Feet | Major Flood: 67.0 Feet |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: Tuolumne River - Modesto (MDSC1)
#
# File Generation Time: 04/10/2026 at 01:25 PM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 04/09/2026 at 11:00 PM PDT
# Maximum Observed Stage: 37.31 Feet
# Maximum Observed Flow: 312 cfs
#
# Earliest Date & Time of Maximum Forecast: 04/13/2026 at 02:00 PM PDT
# Maximum Forecast Stage: 37.35 Feet
# Maximum Forecast Flow: 323 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
04/05/2026 01 PM PDT 37.09 254 Normal
04/05/2026 02 PM PDT 37.09 254 0 Normal
04/05/2026 03 PM PDT 37.09 254 0 Normal
04/05/2026 04 PM PDT 37.09 254 0 Normal
04/05/2026 05 PM PDT 37.11 259 + Normal
04/05/2026 06 PM PDT 37.09 254 - Normal
04/05/2026 07 PM PDT 37.09 254 0 Normal
04/05/2026 08 PM PDT 37.09 254 0 Normal
04/05/2026 09 PM PDT 37.09 254 0 Normal
04/05/2026 10 PM PDT 37.09 254 0 Normal
04/05/2026 11 PM PDT 37.09 254 0 Normal
04/06/2026 12 AM PDT 37.09 254 0 Normal
04/06/2026 01 AM PDT 37.09 254 0 Normal
04/06/2026 02 AM PDT 37.10 257 + Normal
04/06/2026 03 AM PDT 37.10 257 0 Normal
04/06/2026 04 AM PDT 37.10 257 0 Normal
04/06/2026 05 AM PDT 37.10 257 0 Normal
04/06/2026 06 AM PDT 37.11 259 + Normal
04/06/2026 07 AM PDT 37.11 259 0 Normal
04/06/2026 08 AM PDT 37.12 262 + Normal
04/06/2026 09 AM PDT 37.12 262 0 Normal
04/06/2026 10 AM PDT 37.13 264 + Normal
04/06/2026 11 AM PDT 37.14 267 + Normal
04/06/2026 12 PM PDT 37.15 270 + Normal
04/06/2026 01 PM PDT 37.13 264 - Normal
04/06/2026 02 PM PDT 37.13 264 0 Normal
04/06/2026 03 PM PDT 37.12 262 - Normal
04/06/2026 04 PM PDT 37.12 262 0 Normal
04/06/2026 05 PM PDT 37.12 262 0 Normal
04/06/2026 06 PM PDT 37.11 259 - Normal
04/06/2026 07 PM PDT 37.11 259 0 Normal
04/06/2026 08 PM PDT 37.10 257 - Normal
04/06/2026 09 PM PDT 37.10 257 0 Normal
04/06/2026 10 PM PDT 37.09 254 - Normal
04/06/2026 11 PM PDT 37.09 254 0 Normal
04/07/2026 12 AM PDT 37.08 251 - Normal
04/07/2026 01 AM PDT 37.10 257 + Normal
04/07/2026 02 AM PDT 37.11 259 + Normal
04/07/2026 03 AM PDT 37.13 264 + Normal
04/07/2026 04 AM PDT 37.14 267 + Normal
04/07/2026 05 AM PDT 37.14 267 0 Normal
04/07/2026 06 AM PDT 37.13 264 - Normal
04/07/2026 07 AM PDT 37.13 264 0 Normal
04/07/2026 08 AM PDT 37.12 262 - Normal
04/07/2026 09 AM PDT 37.12 262 0 Normal
04/07/2026 10 AM PDT 37.13 264 + Normal
04/07/2026 11 AM PDT 37.13 264 0 Normal
04/07/2026 12 PM PDT 37.13 264 0 Normal
04/07/2026 01 PM PDT 37.13 264 0 Normal
04/07/2026 02 PM PDT 37.13 264 0 Normal
04/07/2026 03 PM PDT 37.13 264 0 Normal
04/07/2026 04 PM PDT 37.12 262 - Normal
04/07/2026 05 PM PDT 37.12 262 0 Normal
04/07/2026 06 PM PDT 37.12 262 0 Normal
04/07/2026 07 PM PDT 37.12 262 0 Normal
04/07/2026 08 PM PDT 37.11 259 - Normal
04/07/2026 09 PM PDT 37.11 259 0 Normal
04/07/2026 10 PM PDT 37.11 259 0 Normal
04/07/2026 11 PM PDT 37.12 262 + Normal
04/08/2026 12 AM PDT 37.12 262 0 Normal
04/08/2026 01 AM PDT 37.12 262 0 Normal
04/08/2026 02 AM PDT 37.13 264 + Normal
04/08/2026 03 AM PDT 37.13 264 0 Normal
04/08/2026 04 AM PDT 37.13 264 0 Normal
04/08/2026 05 AM PDT 37.13 264 0 Normal
04/08/2026 06 AM PDT 37.13 264 0 Normal
04/08/2026 07 AM PDT 37.13 264 0 Normal
04/08/2026 08 AM PDT 37.14 267 + Normal
04/08/2026 09 AM PDT 37.14 267 0 Normal
04/08/2026 10 AM PDT 37.15 270 + Normal
04/08/2026 11 AM PDT 37.14 267 - Normal
04/08/2026 12 PM PDT 37.13 264 - Normal
04/08/2026 01 PM PDT 37.12 262 - Normal
04/08/2026 02 PM PDT 37.11 259 - Normal
04/08/2026 03 PM PDT 37.10 257 - Normal
04/08/2026 04 PM PDT 37.09 254 - Normal
04/08/2026 05 PM PDT 37.09 254 0 Normal
04/08/2026 06 PM PDT 37.09 254 0 Normal
04/08/2026 07 PM PDT 37.09 254 0 Normal
04/08/2026 08 PM PDT 37.09 254 0 Normal
04/08/2026 09 PM PDT 37.09 254 0 Normal
04/08/2026 10 PM PDT 37.09 254 0 Normal
04/08/2026 11 PM PDT 37.10 257 + Normal
04/09/2026 12 AM PDT 37.10 257 0 Normal
04/09/2026 01 AM PDT 37.09 254 - Normal
04/09/2026 02 AM PDT 37.10 257 + Normal
04/09/2026 03 AM PDT 37.11 259 + Normal
04/09/2026 04 AM PDT 37.11 259 0 Normal
04/09/2026 05 AM PDT 37.11 259 0 Normal
04/09/2026 06 AM PDT 37.11 259 0 Normal
04/09/2026 07 AM PDT 37.11 259 0 Normal
04/09/2026 08 AM PDT 37.11 259 0 Normal
04/09/2026 09 AM PDT 37.11 259 0 Normal
04/09/2026 10 AM PDT 37.11 259 0 Normal
04/09/2026 11 AM PDT 37.12 262 + Normal
04/09/2026 12 PM PDT 37.11 259 - Normal
04/09/2026 01 PM PDT 37.11 259 0 Normal
04/09/2026 02 PM PDT 37.10 257 - Normal
04/09/2026 03 PM PDT 37.10 257 0 Normal
04/09/2026 04 PM PDT 37.09 254 - Normal
04/09/2026 05 PM PDT 37.09 254 0 Normal
04/09/2026 06 PM PDT 37.09 254 0 Normal
04/09/2026 07 PM PDT 37.11 259 + Normal
04/09/2026 08 PM PDT 37.16 272 + Normal
04/09/2026 09 PM PDT 37.23 291 + Normal
04/09/2026 10 PM PDT 37.25 296 + Normal
04/09/2026 11 PM PDT 37.31 312 + Normal
04/10/2026 12 AM PDT 37.28 304 - Normal
04/10/2026 01 AM PDT 37.24 293 - Normal
04/10/2026 02 AM PDT 37.20 283 - Normal
04/10/2026 03 AM PDT 37.17 275 - Normal
04/10/2026 04 AM PDT 37.15 270 - Normal
04/10/2026 05 AM PDT 37.14 267 - Normal
04/10/2026 06 AM PDT 37.13 264 - Normal
04/10/2026 07 AM PDT 37.12 262 - Normal
04/10/2026 08 AM PDT 37.12 262 0 Normal
04/10/2026 09 AM PDT 37.11 259 - Normal
04/10/2026 10 AM PDT 37.12 262 + Normal
04/10/2026 11 AM PDT 37.13 264 + Normal
04/10/2026 12 PM PDT 37.13 264 0 Normal
04/10/2026 01 PM PDT 37.13 264 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
04/10/2026 02 PM PDT 37.13 264 Normal
04/10/2026 03 PM PDT 37.13 264 0 Normal
04/10/2026 04 PM PDT 37.13 264 0 Normal
04/10/2026 05 PM PDT 37.13 264 0 Normal
04/10/2026 06 PM PDT 37.13 264 0 Normal
04/10/2026 07 PM PDT 37.14 267 + Normal
04/10/2026 08 PM PDT 37.14 267 0 Normal
04/10/2026 09 PM PDT 37.14 267 0 Normal
04/10/2026 10 PM PDT 37.14 267 0 Normal
04/10/2026 11 PM PDT 37.14 267 0 Normal
04/11/2026 12 AM PDT 37.14 267 0 Normal
04/11/2026 01 AM PDT 37.14 267 0 Normal
04/11/2026 02 AM PDT 37.14 267 0 Normal
04/11/2026 03 AM PDT 37.14 267 0 Normal
04/11/2026 04 AM PDT 37.14 267 0 Normal
04/11/2026 05 AM PDT 37.14 267 0 Normal
04/11/2026 06 AM PDT 37.14 267 0 Normal
04/11/2026 07 AM PDT 37.14 267 0 Normal
04/11/2026 08 AM PDT 37.14 267 0 Normal
04/11/2026 09 AM PDT 37.14 267 0 Normal
04/11/2026 10 AM PDT 37.14 267 0 Normal
04/11/2026 11 AM PDT 37.13 264 - Normal
04/11/2026 12 PM PDT 37.13 264 0 Normal
04/11/2026 01 PM PDT 37.13 264 0 Normal
04/11/2026 02 PM PDT 37.13 264 0 Normal
04/11/2026 03 PM PDT 37.13 264 0 Normal
04/11/2026 04 PM PDT 37.14 267 + Normal
04/11/2026 05 PM PDT 37.14 267 0 Normal
04/11/2026 06 PM PDT 37.15 270 + Normal
04/11/2026 07 PM PDT 37.15 270 0 Normal
04/11/2026 08 PM PDT 37.16 272 + Normal
04/11/2026 09 PM PDT 37.16 272 0 Normal
04/11/2026 10 PM PDT 37.17 275 + Normal
04/11/2026 11 PM PDT 37.18 277 + Normal
04/12/2026 12 AM PDT 37.18 277 0 Normal
04/12/2026 01 AM PDT 37.19 280 + Normal
04/12/2026 02 AM PDT 37.19 280 0 Normal
04/12/2026 03 AM PDT 37.20 283 + Normal
04/12/2026 04 AM PDT 37.20 283 0 Normal
04/12/2026 05 AM PDT 37.20 283 0 Normal
04/12/2026 06 AM PDT 37.21 285 + Normal
04/12/2026 07 AM PDT 37.21 285 0 Normal
04/12/2026 08 AM PDT 37.21 285 0 Normal
04/12/2026 09 AM PDT 37.21 285 0 Normal
04/12/2026 10 AM PDT 37.21 285 0 Normal
04/12/2026 11 AM PDT 37.21 285 0 Normal
04/12/2026 12 PM PDT 37.21 285 0 Normal
04/12/2026 01 PM PDT 37.21 285 0 Normal
04/12/2026 02 PM PDT 37.20 283 - Normal
04/12/2026 03 PM PDT 37.20 283 0 Normal
04/12/2026 04 PM PDT 37.20 283 0 Normal
04/12/2026 05 PM PDT 37.20 283 0 Normal
04/12/2026 06 PM PDT 37.20 283 0 Normal
04/12/2026 07 PM PDT 37.20 283 0 Normal
04/12/2026 08 PM PDT 37.20 283 0 Normal
04/12/2026 09 PM PDT 37.20 283 0 Normal
04/12/2026 10 PM PDT 37.21 285 + Normal
04/12/2026 11 PM PDT 37.22 288 + Normal
04/13/2026 12 AM PDT 37.23 291 + Normal
04/13/2026 01 AM PDT 37.24 293 + Normal
04/13/2026 02 AM PDT 37.25 296 + Normal
04/13/2026 03 AM PDT 37.27 301 + Normal
04/13/2026 04 AM PDT 37.28 304 + Normal
04/13/2026 05 AM PDT 37.29 307 + Normal
04/13/2026 06 AM PDT 37.30 310 + Normal
04/13/2026 07 AM PDT 37.31 312 + Normal
04/13/2026 08 AM PDT 37.32 315 + Normal
04/13/2026 09 AM PDT 37.33 318 + Normal
04/13/2026 10 AM PDT 37.34 321 + Normal
04/13/2026 11 AM PDT 37.34 321 0 Normal
04/13/2026 12 PM PDT 37.34 321 0 Normal
04/13/2026 01 PM PDT 37.34 321 0 Normal
04/13/2026 02 PM PDT 37.35 323 + Normal
04/13/2026 03 PM PDT 37.35 323 0 Normal
04/13/2026 04 PM PDT 37.35 323 0 Normal
04/13/2026 05 PM PDT 37.35 323 0 Normal
04/13/2026 06 PM PDT 37.35 323 0 Normal
04/13/2026 07 PM PDT 37.35 323 0 Normal
04/13/2026 08 PM PDT 37.35 323 0 Normal
04/13/2026 09 PM PDT 37.35 323 0 Normal
04/13/2026 10 PM PDT 37.35 323 0 Normal
04/13/2026 11 PM PDT 37.35 323 0 Normal
04/14/2026 12 AM PDT 37.35 323 0 Normal
04/14/2026 01 AM PDT 37.35 323 0 Normal
04/14/2026 02 AM PDT 37.35 323 0 Normal
04/14/2026 03 AM PDT 37.34 321 - Normal
04/14/2026 04 AM PDT 37.34 321 0 Normal
04/14/2026 05 AM PDT 37.33 318 - Normal
04/14/2026 06 AM PDT 37.32 315 - Normal
04/14/2026 07 AM PDT 37.31 312 - Normal
04/14/2026 08 AM PDT 37.30 310 - Normal
04/14/2026 09 AM PDT 37.29 307 - Normal
04/14/2026 10 AM PDT 37.28 304 - Normal
04/14/2026 11 AM PDT 37.27 301 - Normal
04/14/2026 12 PM PDT 37.26 299 - Normal
04/14/2026 01 PM PDT 37.24 293 - Normal
04/14/2026 02 PM PDT 37.23 291 - Normal
04/14/2026 03 PM PDT 37.22 288 - Normal
04/14/2026 04 PM PDT 37.21 285 - Normal
04/14/2026 05 PM PDT 37.20 283 - Normal
04/14/2026 06 PM PDT 37.19 280 - Normal
04/14/2026 07 PM PDT 37.19 280 0 Normal
04/14/2026 08 PM PDT 37.18 277 - Normal
04/14/2026 09 PM PDT 37.17 275 - Normal
04/14/2026 10 PM PDT 37.16 272 - Normal
04/14/2026 11 PM PDT 37.16 272 0 Normal
04/15/2026 12 AM PDT 37.15 270 - Normal
04/15/2026 01 AM PDT 37.15 270 0 Normal
04/15/2026 02 AM PDT 37.14 267 - Normal
04/15/2026 03 AM PDT 37.14 267 0 Normal
04/15/2026 04 AM PDT 37.13 264 - Normal
04/15/2026 05 AM PDT 37.13 264 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.
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