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Illinois Department of
Natural Resources
| Most Recent Instantaneous Value Feb 1 | Min (1945) | 25th percen- tile | Median | Mean | 75th percen- tile | Max (1968) |
|---|---|---|---|---|---|---|
| -- unavailable -- | 20.0 | 408 | 1200 | 2080 | 2330 | 14500 |
Gage height, feet |
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