Illinois River At Lagrange Lock And Dam

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Stage Color Key
21 ft - Near Flood 23 ft - Minor Flood 27 ft - Moderate Flood 29 ft - Major Flood

Latest Observation: Monday October 27th, 2025 09:00 AM CDT
River Status: Normal

  Height Flow
Currently 7.16 ft 6.2 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
  Sunday 10/26/2025 07:00 PM 7.10 6.04
  Monday 10/27/2025 01:00 AM 7.00 5.79
  Monday 10/27/2025 07:00 AM 7.00 5.79
  Monday 10/27/2025 01:00 PM 7.00 5.79
  Monday 10/27/2025 07:00 PM 6.90 5.55
  Tuesday 10/28/2025 01:00 AM 6.90 5.55

Observation
  Date (CDT) Stage (ft) Flow (kcfs)
Sunday 10/26/2025 11:00 PM 7.27 6.83
Sunday 10/26/2025 11:30 PM 7.26 6.75
Monday 10/27/2025 12:00 AM 7.28 6.91
Monday 10/27/2025 12:30 AM 7.29 6.99
Monday 10/27/2025 01:00 AM 7.39 7.82
Monday 10/27/2025 01:30 AM 7.27 6.83
Monday 10/27/2025 02:00 AM 7.30 7.07
Monday 10/27/2025 02:30 AM 7.34 7.39
Monday 10/27/2025 03:00 AM 7.35 7.48
Monday 10/27/2025 03:30 AM 7.27 6.83
Monday 10/27/2025 04:00 AM 7.27 6.83
Monday 10/27/2025 04:30 AM 7.25 6.67
Monday 10/27/2025 05:00 AM 7.33 7.31
Monday 10/27/2025 05:30 AM 7.26 6.75
Monday 10/27/2025 06:00 AM 7.26 6.75
Monday 10/27/2025 06:30 AM 7.23 6.52
Monday 10/27/2025 07:00 AM 7.21 6.37
Monday 10/27/2025 07:30 AM 7.21 6.37
Monday 10/27/2025 08:00 AM 7.18 6.25
Monday 10/27/2025 08:30 AM 7.22 6.45

Hydrograph

Data Courtesy of the Advanced Hydrologic Prediction Service
Script Courtesy of Dennis at East Masonville Weather with mods by Saratoga-weather.org