« Back to Cascade Locks State Rivers
Columbia River at St. Helens
Critical Stages
14.5' - Action
15.5' - Flood
18' - Moderate
21' - Major
Latest Observation
Updated: 1:48 PM PST 12/16/25
Status: No Flooding
Stage: 7.42 ft
Flow: -999 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 3 PM 12/16 | 7.37 | -999 |
| 4 PM 12/16 | 7.2 | -999 |
| 5 PM 12/16 | 6.96 | -999 |
| 6 PM 12/16 | 6.71 | -999 |
| 7 PM 12/16 | 6.44 | -999 |
| 8 PM 12/16 | 6.17 | -999 |
| 9 PM 12/16 | 5.91 | -999 |
| 10 PM 12/16 | 5.68 | -999 |
| 11 PM 12/16 | 5.55 | -999 |
| 12 AM 12/17 | 5.67 | -999 |
| 1 AM 12/17 | 6.1 | -999 |
| 2 AM 12/17 | 6.7 | -999 |
| 3 AM 12/17 | 7.09 | -999 |
| 4 AM 12/17 | 7.17 | -999 |
| 5 AM 12/17 | 7.1 | -999 |
| 6 AM 12/17 | 6.96 | -999 |
| 7 AM 12/17 | 6.79 | -999 |
| 8 AM 12/17 | 6.63 | -999 |
| 9 AM 12/17 | 6.51 | -999 |
| 10 AM 12/17 | 6.48 | -999 |
| 11 AM 12/17 | 6.66 | -999 |
| 12 PM 12/17 | 7.05 | -999 |
| 1 PM 12/17 | 7.49 | -999 |
| 2 PM 12/17 | 7.72 | -999 |
| 3 PM 12/17 | 7.75 | -999 |
| 4 PM 12/17 | 7.65 | -999 |
| 5 PM 12/17 | 7.47 | -999 |
| 6 PM 12/17 | 7.27 | -999 |
| 7 PM 12/17 | 7.05 | -999 |
| 8 PM 12/17 | 6.82 | -999 |
| 9 PM 12/17 | 6.58 | -999 |
| 10 PM 12/17 | 6.35 | -999 |
| 11 PM 12/17 | 6.14 | -999 |
| 12 AM 12/18 | 6 | -999 |
| 1 AM 12/18 | 6.07 | -999 |
| 2 AM 12/18 | 6.41 | -999 |
| 3 AM 12/18 | 6.85 | -999 |
| 4 AM 12/18 | 7.13 | -999 |
| 5 AM 12/18 | 7.2 | -999 |
| 6 AM 12/18 | 7.14 | -999 |
| 7 AM 12/18 | 7.04 | -999 |
| 8 AM 12/18 | 6.93 | -999 |
| 9 AM 12/18 | 6.81 | -999 |
| 10 AM 12/18 | 6.73 | -999 |
| 11 AM 12/18 | 6.8 | -999 |
| 12 PM 12/18 | 7.14 | -999 |
| 1 PM 12/18 | 7.72 | -999 |
| 2 PM 12/18 | 8.28 | -999 |
| 3 PM 12/18 | 8.56 | -999 |
| 4 PM 12/18 | 8.59 | -999 |
| 5 PM 12/18 | 8.48 | -999 |
| 6 PM 12/18 | 8.31 | -999 |
| 7 PM 12/18 | 8.14 | -999 |
| 8 PM 12/18 | 7.97 | -999 |
| 9 PM 12/18 | 7.83 | -999 |
| 10 PM 12/18 | 7.7 | -999 |
| 11 PM 12/18 | 7.62 | -999 |
| 12 AM 12/19 | 7.59 | -999 |
| 1 AM 12/19 | 7.68 | -999 |
| 2 AM 12/19 | 8.01 | -999 |
| 3 AM 12/19 | 8.52 | -999 |
| 4 AM 12/19 | 9.02 | -999 |
| 5 AM 12/19 | 9.32 | -999 |
| 6 AM 12/19 | 9.54 | -999 |
| 7 AM 12/19 | 9.72 | -999 |
| 8 AM 12/19 | 9.84 | -999 |
| 9 AM 12/19 | 9.93 | -999 |
| 10 AM 12/19 | 9.99 | -999 |
| 11 AM 12/19 | 10.09 | -999 |
| 12 PM 12/19 | 10.27 | -999 |
| 1 PM 12/19 | 10.57 | -999 |
| 2 PM 12/19 | 10.95 | -999 |
| 3 PM 12/19 | 11.27 | -999 |
| 4 PM 12/19 | 11.43 | -999 |
| 5 PM 12/19 | 11.52 | -999 |
| 6 PM 12/19 | 11.58 | -999 |
| 7 PM 12/19 | 11.58 | -999 |
| 8 PM 12/19 | 11.55 | -999 |
| 9 PM 12/19 | 11.49 | -999 |
| 10 PM 12/19 | 11.38 | -999 |
| 11 PM 12/19 | 11.26 | -999 |
| 12 AM 12/20 | 11.15 | -999 |
| 1 AM 12/20 | 11.1 | -999 |
| 2 AM 12/20 | 11.18 | -999 |
| 3 AM 12/20 | 11.3 | -999 |
| 4 AM 12/20 | 11.44 | -999 |
| 5 AM 12/20 | 11.59 | -999 |
| 6 AM 12/20 | 11.69 | -999 |
| 7 AM 12/20 | 11.73 | -999 |
| 8 AM 12/20 | 11.74 | -999 |
| 9 AM 12/20 | 11.73 | -999 |
| 10 AM 12/20 | 11.69 | -999 |
| 11 AM 12/20 | 11.65 | -999 |
| 12 PM 12/20 | 11.61 | -999 |
| 1 PM 12/20 | 11.61 | -999 |
| 2 PM 12/20 | 11.68 | -999 |
| 3 PM 12/20 | 11.82 | -999 |
| 4 PM 12/20 | 11.94 | -999 |
| 5 PM 12/20 | 12 | -999 |
| 6 PM 12/20 | 12 | -999 |
| 7 PM 12/20 | 11.95 | -999 |
| 8 PM 12/20 | 11.87 | -999 |
| 9 PM 12/20 | 11.75 | -999 |
| 10 PM 12/20 | 11.58 | -999 |
| 11 PM 12/20 | 11.4 | -999 |
| 12 AM 12/21 | 11.24 | -999 |
| 1 AM 12/21 | 11.11 | -999 |
| 2 AM 12/21 | 11.08 | -999 |
| 3 AM 12/21 | 11.12 | -999 |
| 4 AM 12/21 | 11.2 | -999 |
| 5 AM 12/21 | 11.33 | -999 |
| 6 AM 12/21 | 11.46 | -999 |
| 7 AM 12/21 | 11.52 | -999 |
| 8 AM 12/21 | 11.54 | -999 |
| 9 AM 12/21 | 11.52 | -999 |
| 10 AM 12/21 | 11.48 | -999 |
| 11 AM 12/21 | 11.41 | -999 |
| 12 PM 12/21 | 11.35 | -999 |
| 1 PM 12/21 | 11.31 | -999 |
| 2 PM 12/21 | 11.37 | -999 |
| 3 PM 12/21 | 11.56 | -999 |
| 4 PM 12/21 | 11.75 | -999 |
| 5 PM 12/21 | 11.83 | -999 |
| 6 PM 12/21 | 11.82 | -999 |
| 7 PM 12/21 | 11.77 | -999 |
| 8 PM 12/21 | 11.68 | -999 |
| 9 PM 12/21 | 11.55 | -999 |
| 10 PM 12/21 | 11.4 | -999 |
| 11 PM 12/21 | 11.23 | -999 |
| 12 AM 12/22 | 11.04 | -999 |
| 1 AM 12/22 | 10.86 | -999 |
| 2 AM 12/22 | 10.75 | -999 |
| 3 AM 12/22 | 10.69 | -999 |
| 4 AM 12/22 | 10.69 | -999 |
| 5 AM 12/22 | 10.79 | -999 |
| 6 AM 12/22 | 10.92 | -999 |
| 7 AM 12/22 | 10.97 | -999 |
| 8 AM 12/22 | 10.96 | -999 |
| 9 AM 12/22 | 10.92 | -999 |
| 10 AM 12/22 | 10.86 | -999 |
| 11 AM 12/22 | 10.76 | -999 |
| 12 PM 12/22 | 10.64 | -999 |
| 1 PM 12/22 | 10.53 | -999 |
| 2 PM 12/22 | 10.46 | -999 |
| 3 PM 12/22 | 10.52 | -999 |
| 4 PM 12/22 | 10.71 | -999 |
| 5 PM 12/22 | 10.87 | -999 |
| 6 PM 12/22 | 10.88 | -999 |
| 7 PM 12/22 | 10.83 | -999 |
| 8 PM 12/22 | 10.74 | -999 |
| 9 PM 12/22 | 10.59 | -999 |
| 10 PM 12/22 | 10.41 | -999 |
| 11 PM 12/22 | 10.22 | -999 |
| 12 AM 12/23 | 10.02 | -999 |
| 1 AM 12/23 | 9.81 | -999 |
| 2 AM 12/23 | 9.61 | -999 |
| 3 AM 12/23 | 9.44 | -999 |
| 4 AM 12/23 | 9.36 | -999 |
| 5 AM 12/23 | 9.45 | -999 |
| 6 AM 12/23 | 9.64 | -999 |
| 7 AM 12/23 | 9.71 | -999 |
| 8 AM 12/23 | 9.69 | -999 |
| 9 AM 12/23 | 9.66 | -999 |
| 10 AM 12/23 | 9.58 | -999 |
| 11 AM 12/23 | 9.46 | -999 |
| 12 PM 12/23 | 9.31 | -999 |
| 1 PM 12/23 | 9.16 | -999 |
| 2 PM 12/23 | 9.05 | -999 |
| 3 PM 12/23 | 9.04 | -999 |
| 4 PM 12/23 | 9.15 | -999 |
| 5 PM 12/23 | 9.32 | -999 |
| 6 PM 12/23 | 9.44 | -999 |
| 7 PM 12/23 | 9.45 | -999 |
| 8 PM 12/23 | 9.41 | -999 |
| 9 PM 12/23 | 9.34 | -999 |
| 10 PM 12/23 | 9.2 | -999 |
| 11 PM 12/23 | 9.02 | -999 |
| 12 AM 12/24 | 8.83 | -999 |
| 1 AM 12/24 | 8.62 | -999 |
| 2 AM 12/24 | 8.41 | -999 |
| 3 AM 12/24 | 8.21 | -999 |
| 4 AM 12/24 | 8.1 | -999 |
| 5 AM 12/24 | 8.16 | -999 |
| 6 AM 12/24 | 8.35 | -999 |
| 7 AM 12/24 | 8.53 | -999 |
| 8 AM 12/24 | 8.57 | -999 |
| 9 AM 12/24 | 8.54 | -999 |
| 10 AM 12/24 | 8.51 | -999 |
| 11 AM 12/24 | 8.43 | -999 |
| 12 PM 12/24 | 8.31 | -999 |
| 1 PM 12/24 | 8.17 | -999 |
| 2 PM 12/24 | 8.05 | -999 |
| 3 PM 12/24 | 8 | -999 |
| 4 PM 12/24 | 8.11 | -999 |
| 5 PM 12/24 | 8.38 | -999 |
| 6 PM 12/24 | 8.63 | -999 |
| 7 PM 12/24 | 8.67 | -999 |
| 8 PM 12/24 | 8.59 | -999 |
| 9 PM 12/24 | 8.51 | -999 |
| 10 PM 12/24 | 8.39 | -999 |
| 11 PM 12/24 | 8.24 | -999 |
| 12 AM 12/25 | 8.05 | -999 |
| 1 AM 12/25 | 7.85 | -999 |
| 2 AM 12/25 | 7.66 | -999 |
| 3 AM 12/25 | 7.5 | -999 |
| 4 AM 12/25 | 7.39 | -999 |
| 5 AM 12/25 | 7.43 | -999 |
| 6 AM 12/25 | 7.66 | -999 |
| 7 AM 12/25 | 7.97 | -999 |
| 8 AM 12/25 | 8.19 | -999 |
| 9 AM 12/25 | 8.26 | -999 |
| 10 AM 12/25 | 8.24 | -999 |
| 11 AM 12/25 | 8.2 | -999 |
| 12 PM 12/25 | 8.14 | -999 |
| 1 PM 12/25 | 8.04 | -999 |
| 2 PM 12/25 | 7.92 | -999 |
| 3 PM 12/25 | 7.81 | -999 |
| 4 PM 12/25 | 7.77 | -999 |
| 5 PM 12/25 | 7.87 | -999 |
| 6 PM 12/25 | 8.1 | -999 |
| 7 PM 12/25 | 8.33 | -999 |
| 8 PM 12/25 | 8.39 | -999 |
| 9 PM 12/25 | 8.34 | -999 |
| 10 PM 12/25 | 8.28 | -999 |
| 11 PM 12/25 | 8.2 | -999 |
| 12 AM 12/26 | 8.06 | -999 |
| 1 AM 12/26 | 7.9 | -999 |
| 2 AM 12/26 | 7.73 | -999 |
| 3 AM 12/26 | 7.56 | -999 |
| 4 AM 12/26 | 7.4 | -999 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 2:12 PM 12/16 | 7.4 | -999 |
| 2:06 PM 12/16 | 7.4 | -999 |
| 1:48 PM 12/16 | 7.42 | -999 |
| 1:42 PM 12/16 | 7.42 | -999 |
| 1:36 PM 12/16 | 7.42 | -999 |
| 1:24 PM 12/16 | 7.4 | -999 |
| 1:18 PM 12/16 | 7.39 | -999 |
| 1:12 PM 12/16 | 7.37 | -999 |
| 1:06 PM 12/16 | 7.35 | -999 |
| 12:54 PM 12/16 | 7.3 | -999 |
| 12:48 PM 12/16 | 7.28 | -999 |
| 12:42 PM 12/16 | 7.24 | -999 |
| 12:36 PM 12/16 | 7.2 | -999 |
| 12:24 PM 12/16 | 7.14 | -999 |
| 12:18 PM 12/16 | 7.09 | -999 |
| 12:12 PM 12/16 | 7.03 | -999 |
| 12:06 PM 12/16 | 6.99 | -999 |
| 11:54 AM 12/16 | 6.83 | -999 |
| 11:48 AM 12/16 | 6.77 | -999 |
| 11:42 AM 12/16 | 6.7 | -999 |
| 11:36 AM 12/16 | -9999 | -999 |
| 11:18 AM 12/16 | 6.52 | -999 |
| 9:48 AM 12/16 | 5.79 | -999 |
| 9:42 AM 12/16 | 5.76 | -999 |
| 9:36 AM 12/16 | 5.74 | -999 |
| 9:24 AM 12/16 | 5.71 | -999 |
| 9:18 AM 12/16 | 5.69 | -999 |
| 9:12 AM 12/16 | 5.67 | -999 |
| 9:06 AM 12/16 | 5.65 | -999 |
| 8:54 AM 12/16 | 5.63 | -999 |
23' -
expect major flooding, especially near Kalama Washington. This river level historically nears the tops of several levees along the Columbia and Lewis Rivers.
21' -
expect major flooding near St. Helens Oregon and Kalama Washington, along with widespread flooding of lowland agricultural areas.
19' -
expect widespread lowland flooding. Levee watches have historically been in effect at this and higher stages for Bachelor Island and locations near Lewis River confluence.
17' -
expect flooding of low lying farmland to begin. Levee watches along the Lewis River historically have been in effect at this level.
15.5' -
expect flooding of low areas along the Columbia.
| Date | Stage (ft) |
|---|---|
| Jun 14, 1948 | 27.1 |
| Dec 25, 1964 | 24 |
| Jun 5, 1956 | 23.2 |
| Feb 10, 1996 | 23 |
| Jun 27, 1950 | 21.6 |
| Jun 10, 1961 | 20.1 |
| May 23, 1957 | 19.8 |
| Jan 3, 1996 | 19.78 |
| Jan 31, 1965 | 19.6 |
| May 19, 1949 | 19.2 |
| Jun 16, 1953 | 18.4 |
| Jun 1, 1946 | 18.1 |
| Jun 23, 1967 | 17.8 |
| Dec 25, 1955 | 17.8 |
| Jun 1, 1958 | 17.4 |
| Jun 19, 1954 | 17.1 |
| Mar 30, 2017 | 15.8 |
Data provided by the National Weather Service.
