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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: | Mar 19 2026 at 2:21 PM PDT | Next Issuance: | Mar 20 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: 03/19/2026 at 02:22 PM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 03/17/2026 at 10:00 PM PDT
# Maximum Observed Stage: 44.61 Feet
# Maximum Observed Flow: 3092 cfs
#
# Earliest Date & Time of Maximum Forecast: 03/19/2026 at 03:00 PM PDT
# Maximum Forecast Stage: 42.90 Feet
# Maximum Forecast Flow: 2328 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
03/14/2026 02 PM PDT 44.56 3068 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 44.06 2838 - Normal
03/18/2026 01 PM PDT 44.00 2811 - Normal
03/18/2026 02 PM PDT 43.94 2784 - Normal
03/18/2026 03 PM PDT 43.89 2762 - Normal
03/18/2026 04 PM PDT 43.84 2739 - Normal
03/18/2026 05 PM PDT 43.80 2721 - Normal
03/18/2026 06 PM PDT 43.75 2699 - Normal
03/18/2026 07 PM PDT 43.71 2681 - Normal
03/18/2026 08 PM PDT 43.68 2668 - Normal
03/18/2026 09 PM PDT 43.65 2655 - Normal
03/18/2026 10 PM PDT 43.63 2646 - Normal
03/18/2026 11 PM PDT 43.58 2624 - Normal
03/19/2026 12 AM PDT 43.56 2615 - Normal
03/19/2026 01 AM PDT 43.51 2593 - Normal
03/19/2026 02 AM PDT 43.44 2562 - Normal
03/19/2026 03 AM PDT 43.37 2531 - Normal
03/19/2026 04 AM PDT 43.32 2509 - Normal
03/19/2026 05 AM PDT 43.27 2488 - Normal
03/19/2026 06 AM PDT 43.21 2462 - Normal
03/19/2026 07 AM PDT 43.15 2436 - Normal
03/19/2026 08 AM PDT 43.09 2410 - Normal
03/19/2026 09 AM PDT 43.06 2397 - Normal
03/19/2026 10 AM PDT 43.03 2384 - Normal
03/19/2026 11 AM PDT 42.99 2367 - Normal
03/19/2026 12 PM PDT 42.98 2362 - Normal
03/19/2026 01 PM PDT 42.95 2349 - Normal
03/19/2026 02 PM PDT 42.93 2341 - Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
03/19/2026 03 PM PDT 42.90 2328 Normal
03/19/2026 04 PM PDT 42.88 2319 - Normal
03/19/2026 05 PM PDT 42.87 2315 - Normal
03/19/2026 06 PM PDT 42.85 2307 - Normal
03/19/2026 07 PM PDT 42.84 2302 - Normal
03/19/2026 08 PM PDT 42.84 2302 0 Normal
03/19/2026 09 PM PDT 42.83 2298 - Normal
03/19/2026 10 PM PDT 42.81 2290 - Normal
03/19/2026 11 PM PDT 42.79 2281 - Normal
03/20/2026 12 AM PDT 42.74 2260 - Normal
03/20/2026 01 AM PDT 42.66 2226 - Normal
03/20/2026 02 AM PDT 42.57 2188 - Normal
03/20/2026 03 AM PDT 42.50 2159 - Normal
03/20/2026 04 AM PDT 42.44 2134 - Normal
03/20/2026 05 AM PDT 42.39 2113 - Normal
03/20/2026 06 AM PDT 42.35 2097 - Normal
03/20/2026 07 AM PDT 42.31 2080 - Normal
03/20/2026 08 AM PDT 42.27 2063 - Normal
03/20/2026 09 AM PDT 42.24 2051 - Normal
03/20/2026 10 AM PDT 42.21 2039 - Normal
03/20/2026 11 AM PDT 42.19 2030 - Normal
03/20/2026 12 PM PDT 42.16 2018 - Normal
03/20/2026 01 PM PDT 42.14 2010 - Normal
03/20/2026 02 PM PDT 42.12 2002 - Normal
03/20/2026 03 PM PDT 42.11 1998 - Normal
03/20/2026 04 PM PDT 42.09 1990 - Normal
03/20/2026 05 PM PDT 42.08 1985 - Normal
03/20/2026 06 PM PDT 42.06 1977 - Normal
03/20/2026 07 PM PDT 42.05 1973 - Normal
03/20/2026 08 PM PDT 42.04 1969 - Normal
03/20/2026 09 PM PDT 42.04 1969 0 Normal
03/20/2026 10 PM PDT 42.02 1961 - Normal
03/20/2026 11 PM PDT 42.00 1953 - Normal
03/21/2026 12 AM PDT 41.95 1933 - Normal
03/21/2026 01 AM PDT 41.88 1904 - Normal
03/21/2026 02 AM PDT 41.82 1880 - Normal
03/21/2026 03 AM PDT 41.74 1848 - Normal
03/21/2026 04 AM PDT 41.68 1824 - Normal
03/21/2026 05 AM PDT 41.62 1800 - Normal
03/21/2026 06 AM PDT 41.56 1777 - Normal
03/21/2026 07 AM PDT 41.52 1761 - Normal
03/21/2026 08 AM PDT 41.47 1741 - Normal
03/21/2026 09 AM PDT 41.43 1725 - Normal
03/21/2026 10 AM PDT 41.40 1714 - Normal
03/21/2026 11 AM PDT 41.37 1702 - Normal
03/21/2026 12 PM PDT 41.34 1690 - Normal
03/21/2026 01 PM PDT 41.31 1679 - Normal
03/21/2026 02 PM PDT 41.29 1671 - Normal
03/21/2026 03 PM PDT 41.27 1663 - Normal
03/21/2026 04 PM PDT 41.25 1655 - Normal
03/21/2026 05 PM PDT 41.24 1651 - Normal
03/21/2026 06 PM PDT 41.22 1644 - Normal
03/21/2026 07 PM PDT 41.21 1640 - Normal
03/21/2026 08 PM PDT 41.20 1636 - Normal
03/21/2026 09 PM PDT 41.19 1632 - Normal
03/21/2026 10 PM PDT 41.18 1628 - Normal
03/21/2026 11 PM PDT 41.15 1617 - Normal
03/22/2026 12 AM PDT 41.10 1597 - Normal
03/22/2026 01 AM PDT 41.05 1578 - Normal
03/22/2026 02 AM PDT 40.98 1552 - Normal
03/22/2026 03 AM PDT 40.92 1529 - Normal
03/22/2026 04 AM PDT 40.85 1502 - Normal
03/22/2026 05 AM PDT 40.80 1484 - Normal
03/22/2026 06 AM PDT 40.75 1465 - Normal
03/22/2026 07 AM PDT 40.70 1446 - Normal
03/22/2026 08 AM PDT 40.66 1431 - Normal
03/22/2026 09 AM PDT 40.63 1420 - Normal
03/22/2026 10 AM PDT 40.60 1409 - Normal
03/22/2026 11 AM PDT 40.57 1398 - Normal
03/22/2026 12 PM PDT 40.54 1387 - Normal
03/22/2026 01 PM PDT 40.52 1380 - Normal
03/22/2026 02 PM PDT 40.50 1372 - Normal
03/22/2026 03 PM PDT 40.48 1365 - Normal
03/22/2026 04 PM PDT 40.46 1358 - Normal
03/22/2026 05 PM PDT 40.45 1354 - Normal
03/22/2026 06 PM PDT 40.43 1347 - Normal
03/22/2026 07 PM PDT 40.42 1343 - Normal
03/22/2026 08 PM PDT 40.41 1339 - Normal
03/22/2026 09 PM PDT 40.40 1336 - Normal
03/22/2026 10 PM PDT 40.39 1332 - Normal
03/22/2026 11 PM PDT 40.39 1332 0 Normal
03/23/2026 12 AM PDT 40.38 1328 - Normal
03/23/2026 01 AM PDT 40.37 1325 - Normal
03/23/2026 02 AM PDT 40.37 1325 0 Normal
03/23/2026 03 AM PDT 40.36 1321 - Normal
03/23/2026 04 AM PDT 40.36 1321 0 Normal
03/23/2026 05 AM PDT 40.35 1318 - Normal
03/23/2026 06 AM PDT 40.35 1318 0 Normal
03/23/2026 07 AM PDT 40.35 1318 0 Normal
03/23/2026 08 AM PDT 40.34 1314 - Normal
03/23/2026 09 AM PDT 40.34 1314 0 Normal
03/23/2026 10 AM PDT 40.34 1314 0 Normal
03/23/2026 11 AM PDT 40.34 1314 0 Normal
03/23/2026 12 PM PDT 40.34 1314 0 Normal
03/23/2026 01 PM PDT 40.33 1310 - Normal
03/23/2026 02 PM PDT 40.33 1310 0 Normal
03/23/2026 03 PM PDT 40.33 1310 0 Normal
03/23/2026 04 PM PDT 40.33 1310 0 Normal
03/23/2026 05 PM PDT 40.33 1310 0 Normal
03/23/2026 06 PM PDT 40.33 1310 0 Normal
03/23/2026 07 PM PDT 40.33 1310 0 Normal
03/23/2026 08 PM PDT 40.33 1310 0 Normal
03/23/2026 09 PM PDT 40.33 1310 0 Normal
03/23/2026 10 PM PDT 40.33 1310 0 Normal
03/23/2026 11 PM PDT 40.32 1307 - Normal
03/24/2026 12 AM PDT 40.32 1307 0 Normal
03/24/2026 01 AM PDT 40.32 1307 0 Normal
03/24/2026 02 AM PDT 40.32 1307 0 Normal
03/24/2026 03 AM PDT 40.32 1307 0 Normal
03/24/2026 04 AM PDT 40.32 1307 0 Normal
03/24/2026 05 AM PDT 40.32 1307 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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