Swan River near Bigfork
Critical Stages
6' - Action
6.5' - Flood
7.5' - Moderate
8' - Major
Latest Observation
Updated: 9:00 PM MST 12/15/25
Status: No Flooding
Stage: 4.42 ft
Flow: 2.93 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 11 PM 12/15 | 4.3 | 2.73 |
| 5 AM 12/16 | 4.23 | 2.61 |
| 11 AM 12/16 | 4.18 | 2.53 |
| 5 PM 12/16 | 4.15 | 2.48 |
| 11 PM 12/16 | 4.13 | 2.45 |
| 5 AM 12/17 | 4.11 | 2.42 |
| 11 AM 12/17 | 4.07 | 2.36 |
| 5 PM 12/17 | 4.04 | 2.31 |
| 11 PM 12/17 | 4 | 2.25 |
| 5 AM 12/18 | 3.98 | 2.22 |
| 11 AM 12/18 | 3.98 | 2.22 |
| 5 PM 12/18 | 3.94 | 2.16 |
| 11 PM 12/18 | 3.89 | 2.09 |
| 5 AM 12/19 | 3.85 | 2.03 |
| 11 AM 12/19 | 3.8 | 1.96 |
| 5 PM 12/19 | 3.76 | 1.9 |
| 11 PM 12/19 | 3.75 | 1.89 |
| 5 AM 12/20 | 3.76 | 1.9 |
| 11 AM 12/20 | 3.76 | 1.9 |
| 5 PM 12/20 | 3.73 | 1.86 |
| 11 PM 12/20 | 3.68 | 1.79 |
| 5 AM 12/21 | 3.62 | 1.71 |
| 11 AM 12/21 | 3.57 | 1.65 |
| 5 PM 12/21 | 3.53 | 1.59 |
| 11 PM 12/21 | 3.49 | 1.54 |
| 5 AM 12/22 | 3.47 | 1.52 |
| 11 AM 12/22 | 3.45 | 1.49 |
| 5 PM 12/22 | 3.43 | 1.47 |
| 11 PM 12/22 | 3.41 | 1.45 |
| 5 AM 12/23 | 3.4 | 1.43 |
| 11 AM 12/23 | 3.39 | 1.42 |
| 5 PM 12/23 | 3.38 | 1.41 |
| 11 PM 12/23 | 3.37 | 1.4 |
| 5 AM 12/24 | 3.36 | 1.39 |
| 11 AM 12/24 | 3.35 | 1.37 |
| 5 PM 12/24 | 3.34 | 1.36 |
| 11 PM 12/24 | 3.33 | 1.35 |
| 5 AM 12/25 | 3.32 | 1.34 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 9:00 PM 12/15 | 4.42 | 2.93 |
| 8:45 PM 12/15 | 4.44 | 2.96 |
| 8:30 PM 12/15 | 4.46 | 3 |
| 8:15 PM 12/15 | 4.44 | 2.96 |
| 8:00 PM 12/15 | 4.44 | 2.96 |
| 7:45 PM 12/15 | 4.46 | 3 |
| 7:30 PM 12/15 | 4.46 | 3 |
| 7:15 PM 12/15 | 4.42 | 2.93 |
| 7:00 PM 12/15 | 4.49 | 3.05 |
| 6:45 PM 12/15 | 4.46 | 3 |
| 6:30 PM 12/15 | 4.45 | 2.98 |
| 6:15 PM 12/15 | 4.47 | 3.02 |
| 6:00 PM 12/15 | 4.49 | 3.05 |
| 5:45 PM 12/15 | 4.45 | 2.98 |
| 5:30 PM 12/15 | 4.45 | 2.98 |
| 5:15 PM 12/15 | 4.47 | 3.02 |
| 5:00 PM 12/15 | 4.45 | 2.98 |
| 4:45 PM 12/15 | 4.45 | 2.98 |
| 4:30 PM 12/15 | 4.45 | 2.98 |
| 4:15 PM 12/15 | 4.46 | 3 |
| 4:00 PM 12/15 | 4.45 | 2.98 |
| 3:45 PM 12/15 | 4.48 | 3.04 |
| 3:30 PM 12/15 | 4.47 | 3.02 |
| 3:15 PM 12/15 | 4.49 | 3.05 |
| 3:00 PM 12/15 | 4.5 | 3.07 |
| 2:45 PM 12/15 | 4.49 | 3.05 |
| 2:30 PM 12/15 | 4.47 | 3.02 |
| 2:15 PM 12/15 | 4.51 | 3.09 |
| 2:00 PM 12/15 | 4.51 | 3.09 |
| 1:45 PM 12/15 | 4.49 | 3.05 |
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.
