Prospect Creek at Thompson Falls
Critical Stages
6.5' - Action
7.5' - Flood
8' - Moderate
9' - Major
Latest Observation
Updated: 3:15 AM MST 12/16/25
Status: No Flooding
Stage: 3.52 ft
Flow: 0.687 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 5 AM 12/16 | 4.35 | 1.1 |
| 11 AM 12/16 | 4.42 | 1.14 |
| 5 PM 12/16 | 4.37 | 1.11 |
| 11 PM 12/16 | 4.3 | 1.07 |
| 5 AM 12/17 | 4.38 | 1.12 |
| 11 AM 12/17 | 4.63 | 1.27 |
| 5 PM 12/17 | 4.86 | 1.41 |
| 11 PM 12/17 | 4.89 | 1.43 |
| 5 AM 12/18 | 4.71 | 1.32 |
| 11 AM 12/18 | 4.47 | 1.17 |
| 5 PM 12/18 | 4.2 | 1.01 |
| 11 PM 12/18 | 3.96 | 0.889 |
| 5 AM 12/19 | 3.93 | 0.874 |
| 11 AM 12/19 | 4.14 | 0.982 |
| 5 PM 12/19 | 4.38 | 1.12 |
| 11 PM 12/19 | 4.48 | 1.17 |
| 5 AM 12/20 | 4.41 | 1.13 |
| 11 AM 12/20 | 4.24 | 1.04 |
| 5 PM 12/20 | 4.04 | 0.929 |
| 11 PM 12/20 | 3.84 | 0.831 |
| 5 AM 12/21 | 3.67 | 0.753 |
| 11 AM 12/21 | 3.53 | 0.692 |
| 5 PM 12/21 | 3.43 | 0.65 |
| 11 PM 12/21 | 3.36 | 0.621 |
| 5 AM 12/22 | 3.3 | 0.598 |
| 11 AM 12/22 | 3.27 | 0.586 |
| 5 PM 12/22 | 3.26 | 0.582 |
| 11 PM 12/22 | 3.26 | 0.582 |
| 5 AM 12/23 | 3.26 | 0.582 |
| 11 AM 12/23 | 3.26 | 0.582 |
| 5 PM 12/23 | 3.24 | 0.575 |
| 11 PM 12/23 | 3.21 | 0.563 |
| 5 AM 12/24 | 3.18 | 0.552 |
| 11 AM 12/24 | 3.15 | 0.541 |
| 5 PM 12/24 | 3.13 | 0.534 |
| 11 PM 12/24 | 3.1 | 0.523 |
| 5 AM 12/25 | 3.08 | 0.516 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 3:15 AM 12/16 | 3.52 | 0.687 |
| 3:00 AM 12/16 | 3.54 | 0.696 |
| 2:45 AM 12/16 | 3.54 | 0.696 |
| 2:30 AM 12/16 | 3.53 | 0.692 |
| 2:15 AM 12/16 | 3.53 | 0.692 |
| 2:00 AM 12/16 | 3.54 | 0.696 |
| 1:45 AM 12/16 | 3.54 | 0.696 |
| 1:30 AM 12/16 | 3.54 | 0.696 |
| 1:15 AM 12/16 | 3.56 | 0.704 |
| 1:00 AM 12/16 | 3.55 | 0.7 |
| 12:45 AM 12/16 | 3.55 | 0.7 |
| 12:30 AM 12/16 | 3.55 | 0.7 |
| 12:15 AM 12/16 | 3.56 | 0.704 |
| 12:00 AM 12/16 | 3.56 | 0.704 |
| 11:45 PM 12/15 | 3.56 | 0.704 |
| 11:30 PM 12/15 | 3.56 | 0.704 |
| 11:15 PM 12/15 | 3.56 | 0.704 |
| 11:00 PM 12/15 | 3.56 | 0.704 |
| 10:45 PM 12/15 | 3.58 | 0.713 |
| 10:30 PM 12/15 | 3.59 | 0.718 |
| 10:15 PM 12/15 | 3.91 | 0.864 |
| 10:00 PM 12/15 | 3.9 | 0.86 |
| 9:45 PM 12/15 | 3.92 | 0.869 |
| 9:30 PM 12/15 | 3.91 | 0.864 |
| 9:15 PM 12/15 | 3.92 | 0.869 |
| 9:00 PM 12/15 | 3.92 | 0.869 |
| 8:45 PM 12/15 | 3.92 | 0.869 |
| 8:30 PM 12/15 | 3.94 | 0.879 |
| 8:15 PM 12/15 | 3.92 | 0.869 |
| 8:00 PM 12/15 | 3.93 | 0.874 |
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.
