Station operated in cooperation with the Michigan Department of Environment, Great Lakes and Energy.
| Min (1977) | 25th percen- tile | Median | Most Recent Instantaneous Value May 28 | Mean | 75th percen- tile | Max (2001) |
|---|---|---|---|---|---|---|
| 3.30 | 8.8 | 12 | 12.7 | 16 | 18 | 57.0 |