Station operated in cooperation with the Michigan Department of Environment, Great Lakes and Energy.
| Min (1941) | 25th percen- tile | Most Recent Instantaneous Value May 22 | Median | Mean | 75th percen- tile | Max (1996) |
|---|---|---|---|---|---|---|
| 56.0 | 208 | 341 | 385 | 687 | 706 | 13500 |