Thornapple River at Caledonia, MI
River level and flood forecast · Kent County
The river is 6.5 ft below flood stage (10 ft).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 7 PM. Forecasts change as rain falls and as upstream water arrives.
Get flood alerts for this river
An email when the National Weather Service forecasts Thornapple River at Caledonia to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 14 ft |
| Moderate flood stage | 12 ft |
| Flood stage | 10 ft |
| Action stage | 8 ft |
| Record crest (April 7, 1947) | 14.4 ft |
What floods at each level
From the National Weather Service, highest first.
- 13 ftThornapple River Drive is flooded.
- 11 ftHigh water begins to impact home on island below Cascade Dam.
- 10 ftMinor flooding of low lying areas occurs.
- 8 ftRiver is bankfull. Expect overflow into low lying areas along the river.
Highest crests on record
- 14.4 ft — April 7, 1947
- 11.79 ft — February 24, 2018
- 11.69 ft — April 19, 2013
- 11.5 ft — May 21, 2020
- 11.43 ft — February 27, 1985
Recent crests: 8.14 ft (January 30, 2024) · 11.35 ft (April 6, 2023) · 8.01 ft (February 24, 2022) · 8.73 ft (June 27, 2021) · 11.5 ft (May 21, 2020)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (CLDM4); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.