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: Tuesday October 28th, 2025 12:00 AM CDT
River Status: Normal

  Height Flow
Currently 6.84 ft 5.41 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
  Monday 10/27/2025 07:00 PM 7.00 5.79
  Tuesday 10/28/2025 01:00 AM 6.90 5.55
  Tuesday 10/28/2025 07:00 AM 6.80 5.31
  Tuesday 10/28/2025 01:00 PM 6.80 5.31
  Tuesday 10/28/2025 07:00 PM 6.80 5.31
  Wednesday 10/29/2025 01:00 AM 6.80 5.31

Observation
  Date (CDT) Stage (ft) Flow (kcfs)
Monday 10/27/2025 02:00 PM 7.09 6.02
Monday 10/27/2025 02:30 PM 7.05 5.92
Monday 10/27/2025 03:00 PM 7.04 5.89
Monday 10/27/2025 03:30 PM 6.99 5.77
Monday 10/27/2025 04:00 PM 7.01 5.82
Monday 10/27/2025 04:30 PM 7.09 6.02
Monday 10/27/2025 05:00 PM 7.00 5.79
Monday 10/27/2025 05:30 PM 6.99 5.77
Monday 10/27/2025 06:00 PM 7.00 5.79
Monday 10/27/2025 06:30 PM 7.04 5.89
Monday 10/27/2025 07:00 PM 7.06 5.94
Monday 10/27/2025 07:30 PM 6.96 5.70
Monday 10/27/2025 08:00 PM 6.93 5.62
Monday 10/27/2025 08:30 PM 6.92 5.60
Monday 10/27/2025 09:00 PM 6.88 5.50
Monday 10/27/2025 09:30 PM 6.86 5.46
Monday 10/27/2025 10:00 PM 6.85 5.43
Monday 10/27/2025 10:30 PM 6.89 5.53
Monday 10/27/2025 11:00 PM 6.83 5.38
Monday 10/27/2025 11:30 PM 6.80 5.31

Hydrograph

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