Rivers in California
San Joaquin River at Patterson
Below flood stage
30.69ftStage
Observed Tue, Sep 22, 2:45 AM PDT
- Flood stage
- 54.70 ft
- Forecast crest
- 30.83 ftFri, Sep 25, 9:00 PM PDT
- Record crest
- 52.24 ft2023
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 58.30 ft |
| Moderate flood | 57.30 ft |
| Minor flood | 54.70 ft |
| Action | 48.00 ft |
- 58.30 ftStages above 58.3 feet result in flooding outside the levee. Top of levee.
Crest history
45 crests on NOAA’s list since 1938.
| # | Date | Stage |
|---|---|---|
| 1 | March 27, 2023 | 52.24 ft |
| 2 | February 22, 2017 | 51.71 ft |
| 3 | March 4, 1983 | 51.26 ft |
| 4 | April 10, 2006 | 50.97 ft |
| 5 | February 25, 1980 | 50.57 ft |
| 6 | June 13, 1938 | 50.50 ft |
| 7 | March 18, 1986 | 49.65 ft |
| 8 | March 31, 2011 | 49.63 ft |
| 9 | February 11, 1998 | 49.16 ft |
| 10 | April 29, 1978 | 48.89 ft |
| 11 | January 6, 1965 | 48.66 ft |
| 12 | January 3, 1984 | 47.42 ft |
| 13 | February 16, 1973 | 46.12 ft |
| 14 | June 2, 2005 | 45.58 ft |
| 15 | June 5, 2019 | 45.31 ft |
| 16 | February 21, 2019 | 44.92 ft |
| 17 | February 26, 1979 | 43.16 ft |
| 18 | March 9, 1970 | 42.65 ft |
| 19 | January 3, 1966 | 42.61 ft |
| 20 | March 7, 2024 | 41.64 ft |
| 21 | February 15, 1963 | 41.20 ft |
| 22 | February 15, 1975 | 40.52 ft |
| 23 | February 13, 1999 | 40.18 ft |
| 24 | April 12, 2018 | 39.68 ft |
| 25 | January 11, 1974 | 39.64 ft |
Most recent crests
- February 24, 2026: 38.58 ft
- March 22, 2025: 37.63 ft
- March 7, 2024: 41.64 ft
- March 27, 2023: 52.24 ft
- December 31, 2021: 33.41 ft
- February 1, 2021: 34.50 ft
- September 30, 2019: 37.54 ft
- June 5, 2019: 45.31 ft
- February 21, 2019: 44.92 ft
- April 12, 2018: 39.68 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the California Nevada River Forecast Center. Forecasts are issued routinely year-round.
Sources
Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service.