Mississippi River At Quincy Lock And Dam 21

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Hydrograph

Stage Color Key
16 ft - Near Flood 18 ft - Minor Flood 21 ft - Moderate Flood 25 ft - Major Flood

Latest Observation: Monday September 7th, 2026 11:00 PM CDT
River Status: Normal

  Height Flow
Currently 2.45 ft 26.2 kcfs
Record 31.3 ft 428694 cfs

Forecast
  Date (CDT) Stage (ft) Flow (kcfs)
  Wednesday 12/31/1969 06:00 PM 0.00 N/A
  Monday 09/07/2026 07:00 PM 2.50 26.80
  Tuesday 09/08/2026 01:00 AM 2.50 26.80
  Tuesday 09/08/2026 07:00 AM 2.50 26.80
  Tuesday 09/08/2026 01:00 PM 2.50 26.80
  Tuesday 09/08/2026 07:00 PM 2.50 26.80
  Wednesday 09/09/2026 01:00 AM 2.50 26.80

Observation
  Date (CDT) Stage (ft) Flow (kcfs)
Monday 09/07/2026 08:10 PM 2.60 28.00
Monday 09/07/2026 08:20 PM 2.46 26.30
Monday 09/07/2026 08:30 PM 2.49 26.70
Monday 09/07/2026 08:40 PM 2.48 26.60
Monday 09/07/2026 08:50 PM 2.46 26.30
Monday 09/07/2026 09:00 PM 2.30 24.40
Monday 09/07/2026 09:10 PM 2.42 25.80
Monday 09/07/2026 09:20 PM 2.49 26.70
Monday 09/07/2026 09:30 PM 2.47 26.50
Monday 09/07/2026 09:40 PM 2.42 25.80
Monday 09/07/2026 09:50 PM 2.33 24.80
Monday 09/07/2026 10:00 PM 2.49 26.70
Monday 09/07/2026 10:10 PM 2.47 26.50
Monday 09/07/2026 10:20 PM 2.50 26.80
Monday 09/07/2026 10:30 PM 2.47 26.50
Monday 09/07/2026 10:40 PM 2.45 26.20
Monday 09/07/2026 10:50 PM 2.47 26.50
Monday 09/07/2026 11:00 PM 2.45 26.20
Monday 09/07/2026 11:10 PM 2.46 26.30
Monday 09/07/2026 11:20 PM 2.47 26.50

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