Illinois lake levels today
8 lakes and reservoirs · 239 river gauges · updated Oct 21, 2026, 4:00 PM CDT
Of 8 Illinois lakes with enough history to compare, 3 are below normal for the date and 4 are above normal.
Nav Project is furthest below full pool, at ▼ 0.3 ft.
Lakes and reservoirs
| Lake | Level (ft) | vs full pool | % full | 7-day change | Vs normal |
|---|---|---|---|---|---|
| Dresden Island Pool | 504.81 | – | – | ▲ 0.17 ft | Much below normal for the date |
| Illinois River Lockport LD | 576.30 | – | – | ▲ 0.31 ft | Much above normal for the date |
| LaGrange Pool | 429.18 | – | – | ▲ 0.28 ft | Below normal for the date |
| Marseilles Pool | 483.25 | – | – | ▲ 0.01 ft | Above normal for the date |
| Nav Project | 368.46 | ▼ 0.34 ft | – | ▲ 0.08 ft | Above normal for the date |
| Peoria Lake | 440.02 | – | – | ▼ 0.19 ft | Below normal for the date |
| Shelbyville Lake Project | 599.47 | ▼ 0.23 ft | – | ▼ 0.09 ft | Normal for the date |
| Starved Rock Pool | 459.30 | – | – | ▲ 0.02 ft | Much above normal for the date |
Tap a column heading to sort. "vs full pool" is shown only where the operator publishes a full-pool level on the same datum.