Thornapple River at Caledonia
Observed Tue, Sep 22, 9:45 PM EDT
- Flood stage
- 10.00 ft
- Record crest
- 14.40 ft1947
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 14.00 ft |
| Moderate flood | 12.00 ft |
| Minor flood | 10.00 ft |
| Action | 8.00 ft |
- 13.00 ftThornapple River Drive is flooded.
- 11.00 ftHigh water begins to impact home on island below Cascade Dam.
- 10.00 ftMinor flooding of low lying areas occurs.
- 8.00 ftRiver is bankfull. Expect overflow into low lying areas along the river.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 6% |
| Moderate flooding | Under 5% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.
Crest history
71 crests on NOAA’s list since 1947.
| # | Date | Stage |
|---|---|---|
| 1 | April 7, 1947 | 14.40 ft |
| 2 | February 24, 2018 | 11.79 ft |
| 3 | April 19, 2013 | 11.69 ft |
| 4 | May 21, 2020 | 11.50 ft |
| 5 | February 27, 1985 | 11.43 ft |
| 6 | April 6, 2023 | 11.35 ft |
| 7 | May 26, 2004 | 11.21 ft |
| 8 | April 22, 1975 | 10.96 ft |
| 9 | May 10, 1956 | 10.79 ft |
| 10 | February 22, 1997 | 10.60 ft |
| 11 | April 2, 1960 | 10.60 ft |
| 12 | December 28, 2008 | 10.33 ft |
| 13 | April 9, 2017 | 9.87 ft |
| 14 | March 15, 1986 | 9.87 ft |
| 15 | March 9, 1979 | 9.86 ft |
| 16 | June 4, 1989 | 9.82 ft |
| 17 | May 19, 2000 | 9.79 ft |
| 18 | October 5, 1986 | 9.59 ft |
| 19 | April 23, 1993 | 9.58 ft |
| 20 | June 11, 2008 | 9.47 ft |
| 21 | December 1, 1990 | 9.44 ft |
| 22 | February 15, 2001 | 9.37 ft |
| 23 | March 8, 1976 | 9.25 ft |
| 24 | January 16, 2005 | 9.15 ft |
| 25 | January 5, 1993 | 9.10 ft |
Most recent crests
- January 30, 2024: 8.14 ft
- April 6, 2023: 11.35 ft
- February 24, 2022: 8.01 ft
- June 27, 2021: 8.73 ft
- May 21, 2020: 11.50 ft
- March 15, 2019: 8.20 ft
- February 24, 2018: 11.79 ft
- April 9, 2017: 9.87 ft
- April 11, 2016: 7.17 ft
- June 15, 2015: 7.05 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the North Central River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time. Stage may be affected by ice during winter months.
Sources
Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.