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: Tuesday December 2nd, 2025 05:00 AM CST
River Status: Normal

  Height Flow
Currently 7.22 ft 6.45 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
  Monday 12/01/2025 06:00 PM 6.90 5.55
  Tuesday 12/02/2025 12:00 AM 7.00 5.79
  Tuesday 12/02/2025 06:00 AM 7.10 6.04
  Tuesday 12/02/2025 12:00 PM 7.10 6.04
  Tuesday 12/02/2025 06:00 PM 7.10 6.04
  Wednesday 12/03/2025 12:00 AM 7.10 6.04

Observation
  Date (CST) Stage (ft) Flow (kcfs)
Monday 12/01/2025 07:00 PM 7.06 5.94
Monday 12/01/2025 07:30 PM 7.06 5.94
Monday 12/01/2025 08:00 PM 7.07 5.97
Monday 12/01/2025 08:30 PM 7.10 6.04
Monday 12/01/2025 09:00 PM 7.10 6.04
Monday 12/01/2025 09:30 PM 7.10 6.04
Monday 12/01/2025 10:00 PM 7.10 6.04
Monday 12/01/2025 10:30 PM 7.10 6.04
Monday 12/01/2025 11:00 PM 7.14 6.15
Monday 12/01/2025 11:30 PM 7.16 6.20
Tuesday 12/02/2025 12:00 AM -9,999.00 N/A
Tuesday 12/02/2025 12:30 AM 7.13 6.12
Tuesday 12/02/2025 01:00 AM 7.16 6.20
Tuesday 12/02/2025 01:30 AM 7.14 6.15
Tuesday 12/02/2025 02:00 AM 7.16 6.20
Tuesday 12/02/2025 02:30 AM 7.14 6.15
Tuesday 12/02/2025 03:00 AM 7.13 6.12
Tuesday 12/02/2025 03:30 AM 7.16 6.20
Tuesday 12/02/2025 04:00 AM 7.21 6.37
Tuesday 12/02/2025 04:30 AM 7.13 6.12

Hydrograph

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