Willamette River at Corvallis
Critical Stages
26' - Action
30' - Flood
33' - Moderate
36' - Major
Latest Observation
Updated: 4:15 AM PST 12/5/25
Status: No Flooding
Stage: 9.84 ft
Flow: 4.18 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 10 AM 12/5 | 9.86 | 4.22 |
| 4 PM 12/5 | 9.98 | 4.42 |
| 10 PM 12/5 | 10.23 | 4.87 |
| 4 AM 12/6 | 10.95 | 6.24 |
| 10 AM 12/6 | 11.93 | 8.29 |
| 4 PM 12/6 | 12.73 | 10.1 |
| 10 PM 12/6 | 13.19 | 11.2 |
| 4 AM 12/7 | 13.23 | 11.3 |
| 10 AM 12/7 | 13.21 | 11.3 |
| 4 PM 12/7 | 13.3 | 11.5 |
| 10 PM 12/7 | 13.27 | 11.4 |
| 4 AM 12/8 | 13.16 | 11.2 |
| 10 AM 12/8 | 13.14 | 11.1 |
| 4 PM 12/8 | 13.23 | 11.3 |
| 10 PM 12/8 | 13.35 | 11.6 |
| 4 AM 12/9 | 13.44 | 11.8 |
| 10 AM 12/9 | 13.67 | 12.4 |
| 4 PM 12/9 | 13.99 | 13.3 |
| 10 PM 12/9 | 14.32 | 14.1 |
| 4 AM 12/10 | 15.1 | 16.3 |
| 10 AM 12/10 | 16.08 | 19.1 |
| 4 PM 12/10 | 16.81 | 21.3 |
| 10 PM 12/10 | 17.36 | 23.1 |
| 4 AM 12/11 | 17.92 | 24.9 |
| 10 AM 12/11 | 18.44 | 26.6 |
| 4 PM 12/11 | 18.75 | 27.7 |
| 10 PM 12/11 | 18.88 | 28.1 |
| 4 AM 12/12 | 18.95 | 28.3 |
| 10 AM 12/12 | 18.88 | 28.1 |
| 4 PM 12/12 | 18.61 | 27.2 |
| 10 PM 12/12 | 18.39 | 26.4 |
| 4 AM 12/13 | 18.23 | 25.9 |
| 10 AM 12/13 | 18.15 | 25.6 |
| 4 PM 12/13 | 18.15 | 25.6 |
| 10 PM 12/13 | 18.23 | 25.9 |
| 4 AM 12/14 | 18.33 | 26.2 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 4:15 AM 12/5 | 9.84 | 4.18 |
| 4:00 AM 12/5 | 9.84 | 4.18 |
| 3:45 AM 12/5 | 9.84 | 4.18 |
| 3:30 AM 12/5 | 9.84 | 4.18 |
| 3:15 AM 12/5 | 9.84 | 4.18 |
| 3:00 AM 12/5 | 9.84 | 4.18 |
| 2:45 AM 12/5 | 9.84 | 4.18 |
| 2:30 AM 12/5 | 9.84 | 4.18 |
| 2:15 AM 12/5 | 9.84 | 4.18 |
| 2:00 AM 12/5 | 9.84 | 4.18 |
| 1:45 AM 12/5 | 9.85 | 4.2 |
| 1:30 AM 12/5 | 9.84 | 4.18 |
| 1:15 AM 12/5 | 9.84 | 4.18 |
| 1:00 AM 12/5 | 9.84 | 4.18 |
| 12:45 AM 12/5 | 9.84 | 4.18 |
| 12:30 AM 12/5 | 9.84 | 4.18 |
| 12:15 AM 12/5 | 9.85 | 4.2 |
| 12:00 AM 12/5 | 9.84 | 4.18 |
| 11:45 PM 12/4 | 9.84 | 4.18 |
| 11:30 PM 12/4 | 9.84 | 4.18 |
| 11:15 PM 12/4 | 9.84 | 4.18 |
| 11:00 PM 12/4 | 9.84 | 4.18 |
| 10:45 PM 12/4 | 9.84 | 4.18 |
| 10:30 PM 12/4 | 9.84 | 4.18 |
| 10:15 PM 12/4 | 9.84 | 4.18 |
| 10:00 PM 12/4 | 9.84 | 4.18 |
| 9:45 PM 12/4 | 9.84 | 4.18 |
| 9:30 PM 12/4 | 9.84 | 4.18 |
| 9:15 PM 12/4 | 9.84 | 4.18 |
| 9:00 PM 12/4 | 9.85 | 4.2 |
36' -
expect widespread flooding, with serious flooding possible between Corvallis and Albany on the west bank of the river. At this and higher stages, the Willamette River between Harrisburg and Corvallis has historically been up to 3 miles wide.
32' -
expect flooding of low spots of Hwy 99 south of Corvallis, the Corvallis-Albany Hwy, and Hwy 34 near Corvallis.
30' -
expect extensive flooding of low-lying agricultural land east and south of Corvallis. Flooding of low areas of Hwy 34 and numerous roads in and near Corvallis begins.
28' -
expect flooding of some river island access roads and secondary roads east of Corvallis.
26' -
the river is at bankfull level and may spill out of its banks at some locations between Harrisburg and Albany.
| Date | Stage (ft) |
|---|---|
| Dec 1, 1861 | 42.4 |
| Dec 29, 1945 | 38.2 |
| Jan 2, 1943 | 38.1 |
| Jan 8, 1948 | 36.8 |
| Jan 19, 1953 | 36.2 |
| Dec 23, 1964 | 36 |
| Dec 24, 1964 | 36 |
| Feb 11, 1961 | 35.9 |
| Dec 15, 1946 | 35.6 |
| Jan 18, 1971 | 35.4 |
| Oct 30, 1950 | 35.2 |
| Dec 7, 1981 | 34.9 |
| Dec 23, 1955 | 34.8 |
| Dec 13, 1948 | 34.1 |
| Jan 17, 1974 | 34 |
| Dec 4, 1980 | 33.8 |
| Mar 3, 1972 | 33.5 |
| Feb 9, 1996 | 33.5 |
| Feb 23, 1948 | 33.2 |
| Apr 10, 2019 | 32.84 |
Data provided by the National Weather Service.
