Illinois River At Lagrange Lock And Dam

Back to River Summary

Stage Color Key
21 ft - Near Flood 23 ft - Minor Flood 27 ft - Moderate Flood 29 ft - Major Flood

Latest Observation: Thursday November 6th, 2025 01:00 PM CST
River Status: Normal

  Height Flow
Currently 7.45 ft 8.37 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
  Thursday 11/06/2025 06:00 PM 7.00 5.79
  Friday 11/07/2025 12:00 AM 6.80 5.31
  Friday 11/07/2025 06:00 AM 6.70 5.09
  Friday 11/07/2025 12:00 PM 6.70 5.09
  Friday 11/07/2025 06:00 PM 6.60 4.20
  Saturday 11/08/2025 12:00 AM 6.60 4.20

Observation
  Date (CST) Stage (ft) Flow (kcfs)
Thursday 11/06/2025 03:00 AM 7.24 6.60
Thursday 11/06/2025 03:30 AM 7.29 6.99
Thursday 11/06/2025 04:00 AM 7.34 7.39
Thursday 11/06/2025 04:30 AM 7.42 8.09
Thursday 11/06/2025 05:00 AM 7.46 8.46
Thursday 11/06/2025 05:30 AM 7.51 8.85
Thursday 11/06/2025 06:00 AM 7.48 8.65
Thursday 11/06/2025 06:30 AM 7.50 8.84
Thursday 11/06/2025 07:00 AM 7.51 8.85
Thursday 11/06/2025 07:30 AM 7.50 8.84
Thursday 11/06/2025 08:00 AM 7.46 8.46
Thursday 11/06/2025 08:30 AM 7.44 8.27
Thursday 11/06/2025 09:00 AM 7.43 8.18
Thursday 11/06/2025 09:30 AM 7.47 8.55
Thursday 11/06/2025 10:00 AM 7.50 8.84
Thursday 11/06/2025 10:30 AM 7.48 8.65
Thursday 11/06/2025 11:00 AM 7.41 8.00
Thursday 11/06/2025 11:30 AM 7.48 8.65
Thursday 11/06/2025 12:00 PM 7.41 8.00
Thursday 11/06/2025 12:30 PM 7.44 8.27

Hydrograph

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