Prospect Creek at Thompson Falls
Critical Stages
6.5' - Action
7.5' - Flood
8' - Moderate
9' - Major
Latest Observation
Updated: 5:15 PM MST 12/15/25
Status: No Flooding
Stage: 3.92 ft
Flow: 0.869 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 11 PM 12/15 | 4 | 0.909 |
| 5 AM 12/16 | 4.17 | 0.998 |
| 11 AM 12/16 | 4.22 | 1.03 |
| 5 PM 12/16 | 4.16 | 0.992 |
| 11 PM 12/16 | 4.1 | 0.96 |
| 5 AM 12/17 | 4.19 | 1.01 |
| 11 AM 12/17 | 4.46 | 1.16 |
| 5 PM 12/17 | 4.71 | 1.32 |
| 11 PM 12/17 | 4.76 | 1.35 |
| 5 AM 12/18 | 4.64 | 1.27 |
| 11 AM 12/18 | 4.41 | 1.13 |
| 5 PM 12/18 | 4.15 | 0.987 |
| 11 PM 12/18 | 3.91 | 0.864 |
| 5 AM 12/19 | 3.87 | 0.845 |
| 11 AM 12/19 | 4.15 | 0.987 |
| 5 PM 12/19 | 4.49 | 1.18 |
| 11 PM 12/19 | 4.64 | 1.27 |
| 5 AM 12/20 | 4.59 | 1.24 |
| 11 AM 12/20 | 4.41 | 1.13 |
| 5 PM 12/20 | 4.18 | 1 |
| 11 PM 12/20 | 3.95 | 0.884 |
| 5 AM 12/21 | 3.75 | 0.789 |
| 11 AM 12/21 | 3.59 | 0.718 |
| 5 PM 12/21 | 3.47 | 0.666 |
| 11 PM 12/21 | 3.38 | 0.629 |
| 5 AM 12/22 | 3.32 | 0.605 |
| 11 AM 12/22 | 3.28 | 0.59 |
| 5 PM 12/22 | 3.24 | 0.575 |
| 11 PM 12/22 | 3.23 | 0.571 |
| 5 AM 12/23 | 3.22 | 0.567 |
| 11 AM 12/23 | 3.21 | 0.563 |
| 5 PM 12/23 | 3.22 | 0.567 |
| 11 PM 12/23 | 3.22 | 0.567 |
| 5 AM 12/24 | 3.21 | 0.563 |
| 11 AM 12/24 | 3.19 | 0.556 |
| 5 PM 12/24 | 3.18 | 0.552 |
| 11 PM 12/24 | 3.17 | 0.549 |
| 5 AM 12/25 | 3.18 | 0.552 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 5:15 PM 12/15 | 3.92 | 0.869 |
| 5:00 PM 12/15 | 3.92 | 0.869 |
| 4:45 PM 12/15 | 3.92 | 0.869 |
| 4:30 PM 12/15 | 3.91 | 0.864 |
| 4:15 PM 12/15 | 3.93 | 0.874 |
| 4:00 PM 12/15 | 3.9 | 0.86 |
| 3:45 PM 12/15 | 3.88 | 0.85 |
| 3:30 PM 12/15 | 3.9 | 0.86 |
| 3:15 PM 12/15 | 3.91 | 0.864 |
| 3:00 PM 12/15 | 3.89 | 0.855 |
| 2:45 PM 12/15 | 3.88 | 0.85 |
| 2:30 PM 12/15 | 3.89 | 0.855 |
| 2:15 PM 12/15 | 3.88 | 0.85 |
| 2:00 PM 12/15 | 3.89 | 0.855 |
| 1:45 PM 12/15 | 3.89 | 0.855 |
| 1:30 PM 12/15 | 3.89 | 0.855 |
| 1:15 PM 12/15 | 3.89 | 0.855 |
| 1:00 PM 12/15 | 3.88 | 0.85 |
| 12:45 PM 12/15 | 3.88 | 0.85 |
| 12:30 PM 12/15 | 3.87 | 0.845 |
| 12:15 PM 12/15 | 3.85 | 0.835 |
| 12:00 PM 12/15 | 3.86 | 0.84 |
| 11:45 AM 12/15 | 3.86 | 0.84 |
| 11:30 AM 12/15 | 3.85 | 0.835 |
| 11:15 AM 12/15 | 3.86 | 0.84 |
| 11:00 AM 12/15 | 3.86 | 0.84 |
| 10:45 AM 12/15 | 3.86 | 0.84 |
| 10:30 AM 12/15 | 3.87 | 0.845 |
| 10:15 AM 12/15 | 3.87 | 0.845 |
| 10:00 AM 12/15 | 3.88 | 0.85 |
8.5' -
A petroleum gas pipeline becomes exposed underneath the creek due to high flood flows.
8.19' -
Homes along Prospect Creek become surrounded with water from Prospect Creek.
8.1' -
Water begins flowing across Prospect Creek Road.
7.5' -
Road washouts are possible along Prospect Creek Road.
| Date | Stage (ft) |
|---|---|
| Jan 16, 1974 | 9.86 |
| Feb 9, 1996 | 9.54 |
| Mar 19, 2017 | 8.1 |
| May 13, 1971 | 7.6 |
| May 21, 1956 | 7.6 |
| May 19, 2008 | 7.27 |
| Jun 1, 1972 | 7.09 |
| May 11, 1976 | 7.09 |
| May 17, 1997 | 6.94 |
| Apr 25, 2012 | 6.52 |
| Apr 14, 2002 | 6.23 |
| May 7, 2022 | 5.01 |
| May 31, 2020 | 4.54 |
| May 2, 2021 | 3.99 |
| Mar 28, 2025 | 3.55 |
Data provided by the National Weather Service.
