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Illinois Department of
Natural Resources
| Most Recent Instantaneous Value Jan 31 | Min (1945) | 25th percen- tile | Median | Mean | 75th percen- tile | Max (1969) |
|---|---|---|---|---|---|---|
| -- unavailable -- | 25.0 | 361 | 1190 | 1970 | 2350 | 12800 |
Gage height, feet |
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