RIVER GAUGE · THORNAPPLE RIVER
Thornapple River at Caledonia
Kent County, Michigan
Water level3.53 ft
Flow475 cfs
Last readingSep 16, 2026, 4:45 PM UTC (last recorded)
Action8 ft3,403 cfs
Minor flood10 ft
Moderate flood12 ft
Major flood14 ft
The past week
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What floods at each level
- 13 ft
Thornapple River Drive is flooded.
- 11 ft
High water begins to impact home on island below Cascade Dam.
- 10 ft
Minor flooding of low lying areas occurs.
- 8 ft
River is bankfull. Expect overflow into low lying areas along the river.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Apr 6, 1947 | 14.4 ft | — |
| Feb 23, 2018 | 11.79 ft | 7,560 cfs |
| Apr 19, 2013 | 11.69 ft | 7,440 cfs |
More on Thornapple River
UpstreamThornapple River at Hastings
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