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: Saturday February 14th, 2026 09:00 AM CST
River Status: Normal

  Height Flow
Currently 7.48 ft 8.65 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
  Saturday 02/14/2026 06:00 PM 7.50 8.84
  Sunday 02/15/2026 12:00 AM 7.50 8.84
  Sunday 02/15/2026 06:00 AM 7.50 8.84
  Sunday 02/15/2026 12:00 PM 7.60 8.95
  Sunday 02/15/2026 06:00 PM 7.60 8.95
  Monday 02/16/2026 12:00 AM 7.60 8.95

Observation
  Date (CST) Stage (ft) Flow (kcfs)
Saturday 02/14/2026 12:00 AM 7.34 7.39
Saturday 02/14/2026 12:30 AM 7.36 7.56
Saturday 02/14/2026 01:00 AM 7.37 7.65
Saturday 02/14/2026 01:30 AM 7.34 7.39
Saturday 02/14/2026 02:00 AM 7.31 7.15
Saturday 02/14/2026 02:30 AM 7.35 7.48
Saturday 02/14/2026 03:00 AM 7.42 8.09
Saturday 02/14/2026 03:30 AM 7.47 8.55
Saturday 02/14/2026 04:00 AM 7.54 8.89
Saturday 02/14/2026 04:30 AM 7.50 8.84
Saturday 02/14/2026 05:00 AM 7.48 8.65
Saturday 02/14/2026 05:30 AM 7.43 8.18
Saturday 02/14/2026 06:00 AM 7.42 8.09
Saturday 02/14/2026 06:30 AM 7.43 8.18
Saturday 02/14/2026 07:00 AM 7.46 8.46
Saturday 02/14/2026 07:30 AM 7.42 8.09
Saturday 02/14/2026 08:00 AM 7.45 8.37
Saturday 02/14/2026 08:30 AM 7.44 8.27
Saturday 02/14/2026 09:00 AM 7.48 8.65
Saturday 02/14/2026 09:30 AM 7.48 8.65

Hydrograph

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