| TUOLUMNE RIVER - MODESTO (MDSC1) | ||
| Latitude: 37.63º N | Longitude: 120.99º W | Elevation: 60 Feet |
| Location: Stanislaus County in CA | ||
| River Group: San Joaquin | ||
| Forecast Issued: | Jan 05 2026 at 7:40 PM PST | Next Issuance: | Jan 06 2026 at 9:00 AM PST |
| Action/ Monitor: 50.5 Ft | Minor Flood: 55.0 Ft | Moderate Flood: 66.0 Ft | Major Flood: 67.0 Ft |
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Historical Stage/Flow Data |
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Note: Water Year 2025 is currently showing peak daily mean values. These will be updated to instantaneous peaks in the coming months. |
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Water Year
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Peak Discharge (cfs)
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Stage (feet)
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Date
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| Most Recent 5 Years | |||
| 2025* | 1,420 | 40.56 | Mar 19, 2025 |
| 2024* | 5,750 | 48.86 | Mar 3, 2024 |
| 2023* | 10,800 | 54.79 | Mar 31, 2023 |
| 2022* | 1,710 | 41.32 | Apr 17, 2022 |
| 2021* | 2,220 | 42.45 | Apr 16, 2021 |
| Historical High Stage/Flow Events (Period of Record - February 1895 to Present)** - Ranked by Flow | |||
| 1951* | 57,000 | 69.19 | Dec 9, 1950 |
| 1997* | 55,800 | 71.21*** | Jan 4, 1997 |
| 1956* | 37,600 | 66.43 | Dec 25, 1955 |
| 1969* | 32,600 | 65.42 | Jan 27, 1969 |
| 1895 | 19,600 | 20.70 | Feb 13, 1895 |
| 1940* | 18,200 | 63.10 | Mar 27, 1940 |
| * Discharge affected to unknown degree by regulation or diversion ** Most recent continuous record back to 1943 with segmented periods back to Feb 1895 *** Backwater effect caused by debris on railroad trestle 1500 ft downstream of gage |
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| Location Photographs | ||
| ESRI™ Locator Map |
| Flood Impacts | |
| 67.0 Feet | Extensive flooding occurs. Flows in excess of 40,000 cfs could cause extensive damage to residential, industrial and commercial development in Modesto downstream of gage. |
| 55.0 Feet | This is channel capacity through downtown Modesto. |