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Umatilla River at Pendleton
Critical Stages
11' - Action
12.3' - Flood
13.5' - Moderate
17' - Major
Latest Observation
Updated: 3:00 AM PST 12/16/25
Status: No Flooding
Stage: 5.34 ft
Flow: 0.331 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 4 AM 12/16 | 5.5 | 0.414 |
| 10 AM 12/16 | 5.54 | 0.437 |
| 4 PM 12/16 | 5.52 | 0.426 |
| 10 PM 12/16 | 5.52 | 0.426 |
| 4 AM 12/17 | 5.7 | 0.543 |
| 10 AM 12/17 | 5.98 | 0.778 |
| 4 PM 12/17 | 6.02 | 0.817 |
| 10 PM 12/17 | 5.97 | 0.769 |
| 4 AM 12/18 | 5.92 | 0.723 |
| 10 AM 12/18 | 5.91 | 0.714 |
| 4 PM 12/18 | 6.22 | 1 |
| 10 PM 12/18 | 6.65 | 1.43 |
| 4 AM 12/19 | 6.86 | 1.64 |
| 10 AM 12/19 | 7.06 | 1.86 |
| 4 PM 12/19 | 7.35 | 2.17 |
| 10 PM 12/19 | 7.36 | 2.18 |
| 4 AM 12/20 | 7.14 | 1.95 |
| 10 AM 12/20 | 6.87 | 1.65 |
| 4 PM 12/20 | 6.64 | 1.42 |
| 10 PM 12/20 | 6.44 | 1.21 |
| 4 AM 12/21 | 6.25 | 1.03 |
| 10 AM 12/21 | 6.1 | 0.898 |
| 4 PM 12/21 | 5.99 | 0.788 |
| 10 PM 12/21 | 5.92 | 0.723 |
| 4 AM 12/22 | 5.88 | 0.687 |
| 10 AM 12/22 | 5.85 | 0.662 |
| 4 PM 12/22 | 5.88 | 0.687 |
| 10 PM 12/22 | 5.96 | 0.759 |
| 4 AM 12/23 | 5.99 | 0.788 |
| 10 AM 12/23 | 6 | 0.797 |
| 4 PM 12/23 | 5.98 | 0.778 |
| 10 PM 12/23 | 5.97 | 0.769 |
| 4 AM 12/24 | 6.01 | 0.807 |
| 10 AM 12/24 | 6.01 | 0.807 |
| 4 PM 12/24 | 5.98 | 0.778 |
| 10 PM 12/24 | 5.93 | 0.732 |
| 4 AM 12/25 | 5.9 | 0.705 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 3:00 AM 12/16 | 5.34 | 0.331 |
| 2:45 AM 12/16 | 5.34 | 0.331 |
| 2:30 AM 12/16 | 5.35 | 0.336 |
| 2:15 AM 12/16 | 5.35 | 0.336 |
| 2:00 AM 12/16 | 5.35 | 0.336 |
| 1:45 AM 12/16 | 5.37 | 0.346 |
| 1:30 AM 12/16 | 5.34 | 0.331 |
| 1:15 AM 12/16 | 5.36 | 0.341 |
| 1:00 AM 12/16 | 5.35 | 0.336 |
| 12:45 AM 12/16 | 5.35 | 0.336 |
| 12:30 AM 12/16 | 5.35 | 0.336 |
| 12:15 AM 12/16 | 5.35 | 0.336 |
| 12:00 AM 12/16 | 5.33 | 0.326 |
| 11:45 PM 12/15 | 5.35 | 0.336 |
| 11:30 PM 12/15 | 5.35 | 0.336 |
| 11:15 PM 12/15 | 5.34 | 0.331 |
| 11:00 PM 12/15 | 5.34 | 0.331 |
| 10:45 PM 12/15 | 5.36 | 0.341 |
| 10:30 PM 12/15 | 5.35 | 0.336 |
| 10:15 PM 12/15 | 5.36 | 0.341 |
| 10:00 PM 12/15 | 5.36 | 0.341 |
| 9:45 PM 12/15 | 5.37 | 0.346 |
| 9:30 PM 12/15 | 5.34 | 0.331 |
| 9:15 PM 12/15 | 5.35 | 0.336 |
| 9:00 PM 12/15 | 5.35 | 0.336 |
| 8:45 PM 12/15 | 5.37 | 0.346 |
| 8:30 PM 12/15 | 5.36 | 0.341 |
| 8:15 PM 12/15 | 5.37 | 0.346 |
| 8:00 PM 12/15 | 5.37 | 0.346 |
| 7:45 PM 12/15 | 5.35 | 0.336 |
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.
