Illinois Lake Water Levels
3 lakes & reservoirs · 2 river systems
We track 3 Illinois lakes and reservoirs, operated by U.S. Army Corps of Engineers. Each level below is that lake's most recent official gauge reading, with the date it was taken — open any lake for its full-pool comparison, 12-month history chart and record high and low.
Of the 3 Illinois lakes with a current reading, 3 are within a foot of full pool.
| Lake | Level | Vs full pool | Full pool | Reading |
|---|---|---|---|---|
| Carlyle Lake | 445.10 ft | +0.10 ft | 445 ft | Sep 11, 2026 |
| Rend Lake | 404.48 ft | −0.52 ft | 405 ft | Sep 11, 2026 |
| Lake Shelbyville | 599.82 ft | +0.12 ft | 599.7 ft | Sep 11, 2026 |
Readings are the latest values published by each lake's managing agency and are provisional, subject to revision. Open a lake page for its live gauge.
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