Thunder Bay River near Bolton
Critical Stages
Action
Flood
Moderate
Major
Latest Observation
Updated: 1:30 AM EST 12/18/25
Status: Not Defined
Stage: 12.58 ft
Flow: 0.652 kcfs
Forecast
Forecast not available for this location.
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 1:30 AM 12/18 | 12.58 | 0.652 |
| 1:15 AM 12/18 | 12.67 | 0.684 |
| 1:00 AM 12/18 | 12.71 | 0.699 |
| 12:45 AM 12/18 | 12.8 | 0.731 |
| 12:30 AM 12/18 | 12.84 | 0.746 |
| 12:15 AM 12/18 | 12.48 | 0.616 |
| 12:00 AM 12/18 | 12.34 | 0.565 |
| 11:45 PM 12/17 | 12.28 | 0.544 |
| 11:30 PM 12/17 | 12.19 | 0.513 |
| 11:15 PM 12/17 | 12.15 | 0.499 |
| 11:00 PM 12/17 | 12.11 | 0.485 |
| 10:45 PM 12/17 | 12.56 | 0.644 |
| 10:30 PM 12/17 | 12.72 | 0.702 |
| 10:15 PM 12/17 | 12.74 | 0.709 |
| 10:00 PM 12/17 | 13.06 | 0.828 |
| 9:45 PM 12/17 | 12.92 | 0.775 |
| 9:30 PM 12/17 | 12.84 | 0.746 |
| 9:15 PM 12/17 | 12.82 | 0.738 |
| 9:00 PM 12/17 | 13.79 | 1.11 |
| 8:45 PM 12/17 | 13.19 | 0.876 |
| 8:30 PM 12/17 | 12.52 | 0.63 |
| 8:15 PM 12/17 | 12.26 | 0.537 |
| 8:00 PM 12/17 | 12.14 | 0.495 |
| 7:45 PM 12/17 | 12.1 | 0.482 |
| 7:30 PM 12/17 | 12.08 | 0.475 |
| 7:15 PM 12/17 | 13.23 | 0.891 |
| 7:00 PM 12/17 | 13.1 | 0.843 |
| 6:45 PM 12/17 | 13.42 | 0.965 |
| 6:30 PM 12/17 | 12.72 | 0.702 |
| 6:15 PM 12/17 | 12.45 | 0.605 |
No flood impact data available for this location.
| Date | Stage (ft) |
|---|---|
| Oct 26, 2017 | 18.24 |
| Apr 2, 2016 | 17.99 |
| Mar 25, 2022 | 17.89 |
| Apr 26, 2018 | 17.72 |
| Apr 29, 2011 | 17.69 |
| Apr 2, 2025 | 17.19 |
| Apr 16, 2014 | 17.18 |
| Apr 20, 2013 | 17.12 |
| Dec 28, 2022 | 16.82 |
| Apr 7, 2023 | 16.8 |
| Mar 14, 2006 | 16.77 |
| May 26, 2004 | 16.31 |
| Apr 13, 2008 | 16.23 |
| Apr 5, 2009 | 16.22 |
| Mar 15, 2012 | 16.14 |
| Apr 18, 2017 | 16.13 |
| Jan 1, 2020 | 16.13 |
| May 2, 2020 | 16.12 |
| Apr 20, 2019 | 16.09 |
| Feb 23, 2018 | 16 |
Data provided by the National Weather Service.
