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: Sunday November 23rd, 2025 02:00 PM CST
River Status: Normal

  Height Flow
Currently 8.29 ft 10.5 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 11/23/2025 06:00 PM 6.90 5.55
  Monday 11/24/2025 12:00 AM 6.80 5.31
  Monday 11/24/2025 06:00 AM 6.80 5.31
  Monday 11/24/2025 12:00 PM 6.70 5.09
  Monday 11/24/2025 06:00 PM 6.70 5.09
  Tuesday 11/25/2025 12:00 AM 6.70 5.09

Observation
  Date (CST) Stage (ft) Flow (kcfs)
Sunday 11/23/2025 04:00 AM 7.04 5.89
Sunday 11/23/2025 04:30 AM 7.04 5.89
Sunday 11/23/2025 05:00 AM 7.04 5.89
Sunday 11/23/2025 05:30 AM 7.01 5.82
Sunday 11/23/2025 06:00 AM 7.02 5.84
Sunday 11/23/2025 06:30 AM 7.02 5.84
Sunday 11/23/2025 07:00 AM 7.03 5.87
Sunday 11/23/2025 07:30 AM 7.01 5.82
Sunday 11/23/2025 08:00 AM 7.02 5.84
Sunday 11/23/2025 08:30 AM 7.02 5.84
Sunday 11/23/2025 09:00 AM 7.03 5.87
Sunday 11/23/2025 09:30 AM 7.03 5.87
Sunday 11/23/2025 10:00 AM 6.85 5.43
Sunday 11/23/2025 10:30 AM 6.86 5.46
Sunday 11/23/2025 11:00 AM 6.86 5.46
Sunday 11/23/2025 11:30 AM 6.86 5.46
Sunday 11/23/2025 12:00 PM 6.82 5.36
Sunday 11/23/2025 12:30 PM 6.81 5.34
Sunday 11/23/2025 01:00 PM 6.79 5.29
Sunday 11/23/2025 01:30 PM 6.79 5.29

Hydrograph

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