Swan River near Bigfork
Critical Stages
6' - Action
6.5' - Flood
7.5' - Moderate
8' - Major
Latest Observation
Updated: 5:00 AM MST 12/18/25
Status: No Flooding
Stage: 4.42 ft
Flow: 2.93 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 11 AM 12/18 | 4.42 | 2.93 |
| 5 PM 12/18 | 4.4 | 2.9 |
| 11 PM 12/18 | 4.36 | 2.83 |
| 5 AM 12/19 | 4.3 | 2.73 |
| 11 AM 12/19 | 4.23 | 2.61 |
| 5 PM 12/19 | 4.16 | 2.5 |
| 11 PM 12/19 | 4.13 | 2.45 |
| 5 AM 12/20 | 4.1 | 2.4 |
| 11 AM 12/20 | 4.06 | 2.34 |
| 5 PM 12/20 | 4 | 2.25 |
| 11 PM 12/20 | 3.93 | 2.15 |
| 5 AM 12/21 | 3.87 | 2.06 |
| 11 AM 12/21 | 3.82 | 1.99 |
| 5 PM 12/21 | 3.77 | 1.92 |
| 11 PM 12/21 | 3.73 | 1.86 |
| 5 AM 12/22 | 3.69 | 1.81 |
| 11 AM 12/22 | 3.66 | 1.77 |
| 5 PM 12/22 | 3.64 | 1.74 |
| 11 PM 12/22 | 3.61 | 1.7 |
| 5 AM 12/23 | 3.59 | 1.67 |
| 11 AM 12/23 | 3.57 | 1.65 |
| 5 PM 12/23 | 3.55 | 1.62 |
| 11 PM 12/23 | 3.54 | 1.61 |
| 5 AM 12/24 | 3.52 | 1.58 |
| 11 AM 12/24 | 3.5 | 1.56 |
| 5 PM 12/24 | 3.49 | 1.54 |
| 11 PM 12/24 | 3.47 | 1.52 |
| 5 AM 12/25 | 3.46 | 1.51 |
| 11 AM 12/25 | 3.45 | 1.49 |
| 5 PM 12/25 | 3.44 | 1.48 |
| 11 PM 12/25 | 3.44 | 1.48 |
| 5 AM 12/26 | 3.43 | 1.47 |
| 11 AM 12/26 | 3.41 | 1.45 |
| 5 PM 12/26 | 3.4 | 1.43 |
| 11 PM 12/26 | 3.39 | 1.42 |
| 5 AM 12/27 | 3.38 | 1.41 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 5:00 AM 12/18 | 4.42 | 2.93 |
| 4:45 AM 12/18 | 4.4 | 2.9 |
| 4:30 AM 12/18 | 4.42 | 2.93 |
| 4:15 AM 12/18 | 4.41 | 2.91 |
| 4:00 AM 12/18 | 4.4 | 2.9 |
| 3:45 AM 12/18 | 4.4 | 2.9 |
| 3:30 AM 12/18 | 4.42 | 2.93 |
| 3:15 AM 12/18 | 4.39 | 2.88 |
| 3:00 AM 12/18 | 4.4 | 2.9 |
| 2:45 AM 12/18 | 4.4 | 2.9 |
| 2:30 AM 12/18 | 4.4 | 2.9 |
| 2:15 AM 12/18 | 4.39 | 2.88 |
| 2:00 AM 12/18 | 4.41 | 2.91 |
| 1:45 AM 12/18 | 4.4 | 2.9 |
| 1:30 AM 12/18 | 4.39 | 2.88 |
| 1:15 AM 12/18 | 4.4 | 2.9 |
| 1:00 AM 12/18 | 4.4 | 2.9 |
| 12:45 AM 12/18 | 4.39 | 2.88 |
| 12:30 AM 12/18 | 4.4 | 2.9 |
| 12:15 AM 12/18 | 4.39 | 2.88 |
| 12:00 AM 12/18 | 4.39 | 2.88 |
| 11:45 PM 12/17 | 4.39 | 2.88 |
| 11:30 PM 12/17 | 4.39 | 2.88 |
| 11:15 PM 12/17 | 4.38 | 2.86 |
| 11:00 PM 12/17 | 4.38 | 2.86 |
| 10:45 PM 12/17 | 4.39 | 2.88 |
| 10:30 PM 12/17 | 4.36 | 2.83 |
| 10:15 PM 12/17 | 4.38 | 2.86 |
| 10:00 PM 12/17 | 4.38 | 2.86 |
| 9:45 PM 12/17 | 4.38 | 2.86 |
7' -
Flooding is possible in the Rippling Waters area near Ferndale.
6.6' -
Flooding affects low lying areas north of Lion Creek Road and adjacent to the river.
6.5' -
Flooding affects low lying areas adjacent to the river.
| Date | Stage (ft) |
|---|---|
| Jun 20, 1974 | 7.34 |
| May 18, 1997 | 7.27 |
| May 24, 1948 | 7.12 |
| Jun 18, 1933 | 7 |
| Jun 10, 1964 | 6.98 |
| Jun 22, 1959 | 6.72 |
| Jun 22, 2022 | 6.61 |
| Jun 8, 1970 | 6.58 |
| Jun 4, 1956 | 6.42 |
| May 29, 1961 | 6.38 |
| May 29, 2018 | 6.27 |
| Jun 12, 1972 | 6.25 |
| Jul 2, 2011 | 6.2 |
| May 27, 2021 | 6.19 |
| Jun 1, 1986 | 6.15 |
| May 11, 1947 | 6.11 |
| May 15, 2013 | 6.08 |
| Jun 2, 2020 | 6.07 |
| Jun 18, 2006 | 6.06 |
| May 27, 1958 | 6.05 |
Data provided by the National Weather Service.
