Levels of 200 cfs plus are reportedly class I. Somewhere above that, some large standing waves appear.
Benjamin Swain provides (2008-04-07):
Prime window is said to be 800 cfs to 1200 cfs. Around 1000 cfs it gets borderline Class II. A group ran it at 1600 cfs and said it was fast and there were few eddies. Looked like a bad level to swim at.
| Name | Range | Difficulty | Updated | Level | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| FLATROCK RIVER AT ST. PAUL, IN | ||||||||||||||||||||||||||||||||
| usgs-03363500 | 200 - 2000 cfs | II | 01h02m | 302 cfs (rc= 0.1 ) | ||||||||||||||||||||||||||||
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| When | River/Gauge | Subject | Level | Reporter |
|---|---|---|---|---|
| 225d19h45m | flatrock [IN] |
Flatrock surfing |
550 | Dennis Wortman |