Rivers in Oregon
Johnson Creek near Sycamore
Below flood stage
1.23ftStage
Observed Sun, Sep 27, 12:30 PM PDT
- Flood stage
- 11.00 ft
- Forecast crest
- 1.23 ftSun, Sep 27, 5:00 PM PDT
- Record crest
- 15.33 ft2015
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 14.00 ft |
| Moderate flood | 13.00 ft |
| Minor flood | 11.00 ft |
| Action | 10.00 ft |
- 14.00 ftexpect widespread flooding of residential and commercial areas along Johnson Creek.
- 13.00 ftexpect flooding to begin at numerous locations along Johnson Creek. Evacuations of several homes have historically taken place at this and higher stages.
- 11.00 ftminor flooding begins along Johnson Creek between SE 92nd Street to SE 122nd Street and between Johnson Creek and SE Harold Street.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 7% |
| Moderate flooding | Under 5% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued September 27, 2026.
Crest history
46 crests on NOAA’s list since 1937.
| # | Date | Stage |
|---|---|---|
| 1 | December 7, 2015 | 15.33 ft |
| 2 | November 19, 1996 | 15.30 ft |
| 3 | January 2, 2009 | 14.69 ft |
| 4 | December 22, 1964 | 14.68 ft |
| 5 | December 1, 1937 | 14.50 ft |
| 6 | February 7, 1996 | 14.28 ft |
| 7 | February 8, 1996 | 14.08 ft |
| 8 | January 12, 1980 | 14.03 ft |
| 9 | November 11, 1995 | 14.00 ft |
| 10 | December 13, 1977 | 13.89 ft |
| 11 | November 24, 1960 | 13.78 ft |
| 12 | February 10, 1949 | 13.77 ft |
| 13 | February 20, 1982 | 13.66 ft |
| 14 | February 1, 2003 | 13.24 ft |
| 15 | January 4, 1956 | 13.23 ft |
| 16 | January 19, 2012 | 13.21 ft |
| 17 | February 24, 1994 | 13.21 ft |
| 18 | January 7, 1948 | 13.06 ft |
| 19 | December 19, 2025 | 12.98 ft |
| 20 | January 15, 1974 | 12.72 ft |
| 21 | January 21, 1972 | 12.70 ft |
| 22 | November 20, 1962 | 12.50 ft |
| 23 | January 15, 1956 | 12.30 ft |
| 24 | January 7, 1969 | 12.29 ft |
| 25 | November 1, 1994 | 12.26 ft |
Most recent crests
- December 19, 2025: 12.98 ft
- December 9, 2025: 11.30 ft
- January 13, 2021: 11.33 ft
- February 5, 2017: 10.73 ft
- December 7, 2015: 15.33 ft
- January 19, 2012: 13.21 ft
- January 2, 2009: 14.69 ft
- December 3, 2007: 11.90 ft
- December 14, 2003: 11.28 ft
- February 1, 2003: 13.24 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the Northwest River Forecast Center. Forecasts are issued routinely year-round.
Sources
Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.