Yakima River at Umtanum
Critical Stages
33.5' - Action
35.5' - Flood
38' - Moderate
39' - Major
Latest Observation
Updated: 10:15 PM PST 12/16/25
Status: No Flooding
Stage: 33.2 ft
Flow: 5.1 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 4 AM 12/17 | 33.22 | 5.15 |
| 10 AM 12/17 | 33.36 | 5.52 |
| 4 PM 12/17 | 33.53 | 5.98 |
| 10 PM 12/17 | 33.68 | 6.41 |
| 4 AM 12/18 | 33.71 | 6.49 |
| 10 AM 12/18 | 33.59 | 6.15 |
| 4 PM 12/18 | 33.44 | 5.73 |
| 10 PM 12/18 | 33.33 | 5.44 |
| 4 AM 12/19 | 33.33 | 5.44 |
| 10 AM 12/19 | 33.44 | 5.73 |
| 4 PM 12/19 | 33.58 | 6.12 |
| 10 PM 12/19 | 33.63 | 6.26 |
| 4 AM 12/20 | 33.55 | 6.04 |
| 10 AM 12/20 | 33.39 | 5.6 |
| 4 PM 12/20 | 33.19 | 5.07 |
| 10 PM 12/20 | 33 | 4.6 |
| 4 AM 12/21 | 32.82 | 4.17 |
| 10 AM 12/21 | 32.66 | 3.81 |
| 4 PM 12/21 | 32.53 | 3.53 |
| 10 PM 12/21 | 32.43 | 3.32 |
| 4 AM 12/22 | 32.35 | 3.16 |
| 10 AM 12/22 | 32.31 | 3.08 |
| 4 PM 12/22 | 32.28 | 3.03 |
| 10 PM 12/22 | 32.27 | 3.01 |
| 4 AM 12/23 | 32.26 | 2.99 |
| 10 AM 12/23 | 32.24 | 2.95 |
| 4 PM 12/23 | 32.22 | 2.91 |
| 10 PM 12/23 | 32.18 | 2.83 |
| 4 AM 12/24 | 32.15 | 2.78 |
| 10 AM 12/24 | 32.1 | 2.69 |
| 4 PM 12/24 | 32.06 | 2.61 |
| 10 PM 12/24 | 32.01 | 2.52 |
| 4 AM 12/25 | 31.97 | 2.45 |
| 10 AM 12/25 | 31.93 | 2.38 |
| 4 PM 12/25 | 31.9 | 2.33 |
| 10 PM 12/25 | 31.86 | 2.27 |
| 4 AM 12/26 | 31.84 | 2.23 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 10:15 PM 12/16 | 33.2 | 5.1 |
| 10:00 PM 12/16 | 33.2 | 5.1 |
| 9:45 PM 12/16 | 33.2 | 5.1 |
| 9:30 PM 12/16 | 33.2 | 5.1 |
| 9:15 PM 12/16 | 33.21 | 5.12 |
| 9:00 PM 12/16 | 33.21 | 5.12 |
| 8:45 PM 12/16 | 33.21 | 5.12 |
| 8:30 PM 12/16 | 33.2 | 5.1 |
| 8:15 PM 12/16 | 33.21 | 5.12 |
| 8:00 PM 12/16 | 33.21 | 5.12 |
| 7:45 PM 12/16 | 33.21 | 5.12 |
| 7:30 PM 12/16 | 33.21 | 5.12 |
| 7:15 PM 12/16 | 33.21 | 5.12 |
| 7:00 PM 12/16 | 33.21 | 5.12 |
| 6:45 PM 12/16 | 33.22 | 5.15 |
| 6:30 PM 12/16 | 33.22 | 5.15 |
| 6:15 PM 12/16 | 33.22 | 5.15 |
| 6:00 PM 12/16 | 33.23 | 5.18 |
| 5:45 PM 12/16 | 33.22 | 5.15 |
| 5:30 PM 12/16 | 33.23 | 5.18 |
| 5:15 PM 12/16 | 33.24 | 5.2 |
| 5:00 PM 12/16 | 33.24 | 5.2 |
| 4:45 PM 12/16 | 33.24 | 5.2 |
| 4:30 PM 12/16 | 33.25 | 5.23 |
| 4:15 PM 12/16 | 33.25 | 5.23 |
| 4:00 PM 12/16 | 33.25 | 5.23 |
| 3:45 PM 12/16 | 33.25 | 5.23 |
| 3:30 PM 12/16 | 33.25 | 5.23 |
| 3:15 PM 12/16 | 33.25 | 5.23 |
| 3:00 PM 12/16 | 33.26 | 5.25 |
39' -
This will produce major flooding of residential and commercial areas, highways and pastures from Teanaway downstream to Ellensburg, especially in the town of Thorp.
38' -
At this level, flooding of roads and pastures in the vicinity of the river will occur. The Ellensburg water supply pumphouse is threatened.
36.5' -
There will be flooding in pastures along the river.
35.5' -
At this level, there will be minor flooding in areas along the river from Teanaway to Ellensburg including Irene Rienhart Park in Ellensburg.
33.5' -
At this stage, the river is near bankfull at Ellensburg. Lowland flooding is possible in the low areas along the river.
| Date | Stage (ft) |
|---|---|
| Nov 15, 1906 | 41.1 |
| May 29, 1948 | 38.98 |
| Feb 9, 1996 | 38.77 |
| Nov 25, 1990 | 37.93 |
| Jan 8, 2009 | 37.84 |
| Dec 3, 1977 | 37.63 |
| Nov 23, 1959 | 37.08 |
| Jan 17, 2011 | 36.69 |
| May 16, 2011 | 36.5 |
| Dec 10, 2015 | 35.7 |
| Feb 16, 2016 | 35.67 |
| Jan 31, 1965 | 35.22 |
| Dec 30, 1999 | 34.44 |
Data provided by the National Weather Service.
