Station operated in cooperation with the Michigan Department of Environment, Great Lakes and Energy.
| Min (1977) | Most Recent Instantaneous Value Nov 15 | 25th percen- tile | Median | Mean | 75th percen- tile | Max (1992) |
|---|---|---|---|---|---|---|
| 4.00 | 6.73 | 9.8 | 13 | 16 | 19 | 67.0 |