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 30th, 2025 02:00 PM CST
River Status: Normal

  Height Flow
Currently 7.07 ft 5.97 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 11/30/2025 06:00 PM 7.00 5.79
  Monday 12/01/2025 12:00 AM 7.00 5.79
  Monday 12/01/2025 06:00 AM 7.10 6.04
  Monday 12/01/2025 12:00 PM 7.10 6.04
  Monday 12/01/2025 06:00 PM 7.20 6.30
  Tuesday 12/02/2025 12:00 AM 7.20 6.30

Observation
  Date (CST) Stage (ft) Flow (kcfs)
Sunday 11/30/2025 04:00 AM 7.02 5.84
Sunday 11/30/2025 04:30 AM 6.96 5.70
Sunday 11/30/2025 05:00 AM 6.94 5.65
Sunday 11/30/2025 05:30 AM 6.89 5.53
Sunday 11/30/2025 06:00 AM 6.88 5.50
Sunday 11/30/2025 06:30 AM 7.08 5.99
Sunday 11/30/2025 07:00 AM 6.83 5.38
Sunday 11/30/2025 07:30 AM 7.38 7.73
Sunday 11/30/2025 08:00 AM 6.80 5.31
Sunday 11/30/2025 08:30 AM 8.43 11.00
Sunday 11/30/2025 09:00 AM 6.93 5.62
Sunday 11/30/2025 09:30 AM 7.10 6.04
Sunday 11/30/2025 10:00 AM 7.94 9.33
Sunday 11/30/2025 10:30 AM 7.20 6.30
Sunday 11/30/2025 11:00 AM 7.22 6.45
Sunday 11/30/2025 11:30 AM 7.20 6.30
Sunday 11/30/2025 12:00 PM 7.20 6.30
Sunday 11/30/2025 12:30 PM 7.22 6.45
Sunday 11/30/2025 01:00 PM 7.11 6.07
Sunday 11/30/2025 01:30 PM 7.08 5.99

Hydrograph

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