Illinois River At Lagrange Lock And Dam
Back to River Summary
| Stage Color Key |
| 21 ft - Near Flood |
23 ft - Minor Flood |
27 ft - Moderate Flood |
29 ft - Major Flood |
Latest Observation:
Friday September 18th, 2026 03:00 AM CDT
River Status:
Normal
| |
Height |
Flow |
| Currently |
9.37 ft |
13.3 kcfs |
| Record |
34.66 ft |
126400 cfs |
| Forecast |
| |
Date (CDT) |
Stage (ft) |
Flow (kcfs) |
|
|
Wednesday 12/31/1969 06:00 PM |
0.00 |
N/A |
|
|
Thursday 09/17/2026 07:00 PM |
9.90 |
N/A |
|
|
Friday 09/18/2026 01:00 AM |
9.70 |
N/A |
|
|
Friday 09/18/2026 07:00 AM |
9.50 |
N/A |
|
|
Friday 09/18/2026 01:00 PM |
9.30 |
N/A |
|
|
Friday 09/18/2026 07:00 PM |
9.20 |
N/A |
|
|
Saturday 09/19/2026 01:00 AM |
9.20 |
N/A |
| Observation |
| |
Date (CDT) |
Stage (ft) |
Flow (kcfs) |
|
|
Thursday 09/17/2026 06:00 PM |
9.58 |
N/A |
|
|
Thursday 09/17/2026 06:30 PM |
-9,999.00 |
N/A |
|
|
Thursday 09/17/2026 07:00 PM |
9.42 |
N/A |
|
|
Thursday 09/17/2026 07:30 PM |
9.52 |
N/A |
|
|
Thursday 09/17/2026 08:00 PM |
9.46 |
N/A |
|
|
Thursday 09/17/2026 08:30 PM |
9.66 |
N/A |
|
|
Thursday 09/17/2026 09:00 PM |
9.40 |
N/A |
|
|
Thursday 09/17/2026 09:30 PM |
9.39 |
N/A |
|
|
Thursday 09/17/2026 10:00 PM |
9.52 |
N/A |
|
|
Thursday 09/17/2026 10:30 PM |
9.36 |
N/A |
|
|
Thursday 09/17/2026 11:00 PM |
9.41 |
N/A |
|
|
Thursday 09/17/2026 11:30 PM |
9.35 |
N/A |
|
|
Friday 09/18/2026 12:00 AM |
9.24 |
N/A |
|
|
Friday 09/18/2026 12:30 AM |
9.18 |
N/A |
|
|
Friday 09/18/2026 01:00 AM |
9.18 |
N/A |
|
|
Friday 09/18/2026 01:30 AM |
9.16 |
N/A |
|
|
Friday 09/18/2026 02:00 AM |
9.13 |
N/A |
|
|
Friday 09/18/2026 02:30 AM |
9.12 |
N/A |
|
|
Friday 09/18/2026 03:00 AM |
9.37 |
N/A |
|
|
Friday 09/18/2026 03:30 AM |
9.09 |
N/A |
Data Courtesy of the Advanced Hydrologic Prediction Service
Script Courtesy of Dennis at East Masonville Weather
with mods by Saratoga-weather.org