Umatilla River at Pendleton
Critical Stages
11' - Action
12.3' - Flood
13.5' - Moderate
17' - Major
Latest Observation
Updated: 7:00 PM PST 12/17/25
Status: No Flooding
Stage: 5.34 ft
Flow: 0.331 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 10 PM 12/17 | 5.23 | 0.281 |
| 4 AM 12/18 | 5.27 | 0.298 |
| 10 AM 12/18 | 5.31 | 0.317 |
| 4 PM 12/18 | 5.87 | 0.679 |
| 10 PM 12/18 | 6.48 | 1.25 |
| 4 AM 12/19 | 6.94 | 1.73 |
| 10 AM 12/19 | 7.55 | 2.39 |
| 4 PM 12/19 | 8.33 | 3.33 |
| 10 PM 12/19 | 8.05 | 2.99 |
| 4 AM 12/20 | 7.64 | 2.5 |
| 10 AM 12/20 | 7.22 | 2.03 |
| 4 PM 12/20 | 6.88 | 1.66 |
| 10 PM 12/20 | 6.62 | 1.4 |
| 4 AM 12/21 | 6.65 | 1.43 |
| 10 AM 12/21 | 6.29 | 1.07 |
| 4 PM 12/21 | 6.13 | 0.925 |
| 10 PM 12/21 | 6.05 | 0.846 |
| 4 AM 12/22 | 6.07 | 0.867 |
| 10 AM 12/22 | 6.08 | 0.877 |
| 4 PM 12/22 | 6.05 | 0.846 |
| 10 PM 12/22 | 6.02 | 0.817 |
| 4 AM 12/23 | 6 | 0.797 |
| 10 AM 12/23 | 5.97 | 0.769 |
| 4 PM 12/23 | 5.92 | 0.723 |
| 10 PM 12/23 | 5.87 | 0.679 |
| 4 AM 12/24 | 5.82 | 0.637 |
| 10 AM 12/24 | 5.78 | 0.604 |
| 4 PM 12/24 | 5.91 | 0.714 |
| 10 PM 12/24 | 6.06 | 0.856 |
| 4 AM 12/25 | 6.04 | 0.836 |
| 10 AM 12/25 | 5.95 | 0.75 |
| 4 PM 12/25 | 5.88 | 0.687 |
| 10 PM 12/25 | 5.85 | 0.662 |
| 4 AM 12/26 | 5.81 | 0.628 |
| 10 AM 12/26 | 5.77 | 0.596 |
| 4 PM 12/26 | 5.73 | 0.565 |
| 10 PM 12/26 | 5.69 | 0.535 |
| 4 AM 12/27 | 5.65 | 0.507 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 8:00 PM 12/17 | 5.34 | 0.331 |
| 7:45 PM 12/17 | 5.35 | 0.336 |
| 7:30 PM 12/17 | 5.35 | 0.336 |
| 7:15 PM 12/17 | 5.36 | 0.341 |
| 7:00 PM 12/17 | 5.34 | 0.331 |
| 6:45 PM 12/17 | 5.34 | 0.331 |
| 6:30 PM 12/17 | 5.34 | 0.331 |
| 6:15 PM 12/17 | 5.34 | 0.331 |
| 6:00 PM 12/17 | 5.33 | 0.326 |
| 5:45 PM 12/17 | 5.33 | 0.326 |
| 5:30 PM 12/17 | 5.33 | 0.326 |
| 5:15 PM 12/17 | 5.33 | 0.326 |
| 5:00 PM 12/17 | 5.32 | 0.321 |
| 4:45 PM 12/17 | 5.32 | 0.321 |
| 4:30 PM 12/17 | 5.32 | 0.321 |
| 4:15 PM 12/17 | 5.31 | 0.317 |
| 4:00 PM 12/17 | 5.29 | 0.307 |
| 3:45 PM 12/17 | 5.32 | 0.321 |
| 3:30 PM 12/17 | 5.31 | 0.317 |
| 3:15 PM 12/17 | 5.31 | 0.317 |
| 3:00 PM 12/17 | 5.31 | 0.317 |
| 2:45 PM 12/17 | 5.31 | 0.317 |
| 2:30 PM 12/17 | 5.31 | 0.317 |
| 2:15 PM 12/17 | 5.31 | 0.317 |
| 2:00 PM 12/17 | 5.29 | 0.307 |
| 1:45 PM 12/17 | 5.31 | 0.317 |
| 1:30 PM 12/17 | 5.3 | 0.312 |
| 1:15 PM 12/17 | 5.31 | 0.317 |
| 1:00 PM 12/17 | 5.28 | 0.303 |
| 12:45 PM 12/17 | 5.31 | 0.317 |
12.3' -
At this stage...minor flooding of lowland areas along the river from Riverside through Pendleton and to Reith can be expected.
| Date | Stage (ft) |
|---|---|
| Feb 6, 2020 | 19.2 |
| Apr 10, 2019 | 13.17 |
| Feb 9, 1996 | 11.08 |
| May 30, 1906 | 11 |
| Jan 17, 2011 | 10.31 |
| Jan 30, 1965 | 9.4 |
| Mar 3, 1972 | 9.15 |
| Dec 3, 1977 | 9.1 |
| Mar 10, 2014 | 9.07 |
| Feb 22, 1949 | 9.01 |
| Dec 13, 1977 | 8.7 |
| Dec 12, 1946 | 8.45 |
| Apr 20, 2013 | 8.43 |
| Dec 29, 1945 | 7.92 |
| Dec 7, 1973 | 7.5 |
| Apr 14, 2002 | 7.18 |
| Apr 21, 1958 | 5.84 |
| Feb 26, 1948 | 5.79 |
| Jan 19, 1953 | 5.41 |
| Apr 13, 1936 | 5.2 |
Data provided by the National Weather Service.
