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 November 10th, 2025 07:00 AM CST
River Status: Normal

  Height Flow
Currently 7.93 ft 9.32 kcfs
Record 34.66 ft 126400 cfs

Forecast
  Date (CST) Stage (ft) Flow (kcfs)
  Wednesday 12/31/1969 06:00 PM 0.00 N/A
  Sunday 11/09/2025 06:00 PM 6.80 5.31
  Monday 11/10/2025 12:00 AM 7.00 5.79
  Monday 11/10/2025 06:00 AM 7.00 5.79
  Monday 11/10/2025 12:00 PM 7.00 5.79
  Monday 11/10/2025 06:00 PM 6.90 5.55
  Tuesday 11/11/2025 12:00 AM 6.80 5.31

Observation
  Date (CST) Stage (ft) Flow (kcfs)
Sunday 11/09/2025 09:00 PM 7.61 8.96
Sunday 11/09/2025 09:30 PM 7.64 9.00
Sunday 11/09/2025 10:00 PM 7.69 9.05
Sunday 11/09/2025 10:30 PM 7.70 9.06
Sunday 11/09/2025 11:00 PM 7.72 9.09
Sunday 11/09/2025 11:30 PM 7.78 9.15
Monday 11/10/2025 12:00 AM 7.79 9.16
Monday 11/10/2025 12:30 AM 7.86 9.24
Monday 11/10/2025 01:00 AM 7.85 9.23
Monday 11/10/2025 01:30 AM 7.86 9.24
Monday 11/10/2025 02:00 AM 7.88 9.26
Monday 11/10/2025 02:30 AM 7.91 9.30
Monday 11/10/2025 03:00 AM 7.94 9.33
Monday 11/10/2025 03:30 AM 7.89 9.27
Monday 11/10/2025 04:00 AM 7.93 9.32
Monday 11/10/2025 04:30 AM 7.87 9.25
Monday 11/10/2025 05:00 AM 7.94 9.33
Monday 11/10/2025 05:30 AM 8.02 9.47
Monday 11/10/2025 06:00 AM 7.96 9.35
Monday 11/10/2025 06:30 AM 7.93 9.32

Hydrograph

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