Tualatin River near Dilley
Critical Stages
16' - Action
17.5' - Flood
18.5' - Moderate
19.5' - Major
Latest Observation
Updated: 1:45 PM PST 12/10/25
Status: Action
Stage: 17.14 ft
Flow: 1.85 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 4 PM 12/10 | 17.08 | 1.76 |
| 10 PM 12/10 | 16.99 | 1.63 |
| 4 AM 12/11 | 16.9 | 1.51 |
| 10 AM 12/11 | 16.84 | 1.43 |
| 4 PM 12/11 | 16.81 | 1.4 |
| 10 PM 12/11 | 16.78 | 1.36 |
| 4 AM 12/12 | 16.74 | 1.32 |
| 10 AM 12/12 | 16.64 | 1.24 |
| 4 PM 12/12 | 16.5 | 1.15 |
| 10 PM 12/12 | 16.35 | 1.04 |
| 4 AM 12/13 | 16.16 | 0.938 |
| 10 AM 12/13 | 15.94 | 0.858 |
| 4 PM 12/13 | 15.7 | 0.788 |
| 10 PM 12/13 | 15.51 | 0.736 |
| 4 AM 12/14 | 15.34 | 0.693 |
| 10 AM 12/14 | 15.2 | 0.662 |
| 4 PM 12/14 | 15.07 | 0.635 |
| 10 PM 12/14 | 14.98 | 0.618 |
| 4 AM 12/15 | 14.91 | 0.606 |
| 10 AM 12/15 | 14.91 | 0.606 |
| 4 PM 12/15 | 15.03 | 0.627 |
| 10 PM 12/15 | 15.29 | 0.682 |
| 4 AM 12/16 | 15.65 | 0.774 |
| 10 AM 12/16 | 15.98 | 0.87 |
| 4 PM 12/16 | 16.15 | 0.933 |
| 10 PM 12/16 | 16.17 | 0.942 |
| 4 AM 12/17 | 16.13 | 0.925 |
| 10 AM 12/17 | 16.08 | 0.903 |
| 4 PM 12/17 | 16.08 | 0.903 |
| 10 PM 12/17 | 16.13 | 0.925 |
| 4 AM 12/18 | 16.23 | 0.969 |
| 10 AM 12/18 | 16.36 | 1.05 |
| 4 PM 12/18 | 16.51 | 1.16 |
| 10 PM 12/18 | 16.69 | 1.28 |
| 4 AM 12/19 | 16.83 | 1.42 |
| 10 AM 12/19 | 16.93 | 1.55 |
| 4 PM 12/19 | 17 | 1.64 |
| 10 PM 12/19 | 17.03 | 1.69 |
| 4 AM 12/20 | 17.04 | 1.7 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 2:00 PM 12/10 | 17.12 | 1.82 |
| 1:45 PM 12/10 | 17.14 | 1.85 |
| 1:30 PM 12/10 | 17.14 | 1.85 |
| 1:15 PM 12/10 | 17.15 | 1.87 |
| 1:00 PM 12/10 | 17.15 | 1.87 |
| 12:45 PM 12/10 | 17.14 | 1.85 |
| 12:30 PM 12/10 | 17.15 | 1.87 |
| 12:15 PM 12/10 | 17.16 | 1.88 |
| 12:00 PM 12/10 | 17.17 | 1.9 |
| 11:45 AM 12/10 | 17.17 | 1.9 |
| 11:30 AM 12/10 | 17.16 | 1.88 |
| 11:15 AM 12/10 | 17.18 | 1.92 |
| 11:00 AM 12/10 | 17.15 | 1.87 |
| 10:45 AM 12/10 | 17.16 | 1.88 |
| 10:30 AM 12/10 | 17.16 | 1.88 |
| 10:15 AM 12/10 | 17.16 | 1.88 |
| 10:00 AM 12/10 | 17.17 | 1.9 |
| 9:45 AM 12/10 | 17.17 | 1.9 |
| 9:30 AM 12/10 | 17.17 | 1.9 |
| 9:15 AM 12/10 | 17.18 | 1.92 |
| 9:00 AM 12/10 | 17.18 | 1.92 |
| 8:45 AM 12/10 | 17.18 | 1.92 |
| 8:30 AM 12/10 | 17.19 | 1.93 |
| 8:15 AM 12/10 | 17.21 | 1.97 |
| 8:00 AM 12/10 | 17.19 | 1.93 |
| 7:45 AM 12/10 | 17.18 | 1.92 |
| 7:30 AM 12/10 | 17.2 | 1.95 |
| 7:15 AM 12/10 | 17.19 | 1.93 |
| 7:00 AM 12/10 | 17.21 | 1.97 |
| 6:45 AM 12/10 | 17.21 | 1.97 |
19.5' -
expect major and widespread flooding in the upper Tualatin Valley, with numerou road closures likely and several homes flooded or isolated due to surrounding flood waters.
18.5' -
a few homes are threatened by floodwaters. Numerous roads are flooded and may be closed, and widespread lowland agricultural flooding occurs.
17.5' -
several minor roads begin to flood and may be closed. Widespread lowland agricultural flooding occurs at this and higher stages.
17' -
expect inundation of low areas, including some farmland, along the river channel.
| Date | Stage (ft) |
|---|---|
| Dec 22, 1964 | 19.34 |
| Jan 21, 1972 | 19.27 |
| Feb 8, 1996 | 19.06 |
| Dec 5, 2007 | 19 |
| Dec 22, 1955 | 18.8 |
| Dec 14, 1977 | 18.63 |
| Jan 16, 1974 | 18.53 |
| Apr 5, 1991 | 18.47 |
| Dec 13, 1966 | 18.42 |
| Dec 26, 1980 | 18.2 |
| Feb 1, 1987 | 18.19 |
| Jan 15, 1988 | 18.14 |
| Dec 30, 1996 | 18.02 |
| Nov 26, 1962 | 18 |
| Nov 26, 1998 | 18 |
| Dec 29, 1998 | 17.99 |
| Dec 9, 2015 | 17.93 |
| Feb 20, 1982 | 17.93 |
| Jan 17, 1971 | 17.91 |
| Feb 17, 1949 | 17.9 |
Data provided by the National Weather Service.
