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 August 3rd, 2026 07:00 PM CDT
River Status: Normal

  Height Flow
Currently 5.19 ft 62.5 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 08/03/2026 07:00 PM 5.20 62.70
  Tuesday 08/04/2026 01:00 AM 5.30 64.00
  Tuesday 08/04/2026 07:00 AM 5.40 65.40
  Tuesday 08/04/2026 01:00 PM 5.50 66.70
  Tuesday 08/04/2026 07:00 PM 5.50 66.70
  Wednesday 08/05/2026 01:00 AM 5.50 66.70

Observation
  Date (CDT) Stage (ft) Flow (kcfs)
Monday 08/03/2026 03:40 PM 5.18 62.40
Monday 08/03/2026 03:50 PM 5.14 61.90
Monday 08/03/2026 04:00 PM 5.16 62.10
Monday 08/03/2026 04:10 PM 5.16 62.10
Monday 08/03/2026 04:20 PM 5.16 62.10
Monday 08/03/2026 04:30 PM 5.16 62.10
Monday 08/03/2026 04:40 PM 5.15 62.00
Monday 08/03/2026 04:50 PM 5.17 62.30
Monday 08/03/2026 05:00 PM 5.14 61.90
Monday 08/03/2026 05:10 PM 5.20 62.70
Monday 08/03/2026 05:20 PM 5.20 62.70
Monday 08/03/2026 05:30 PM 5.17 62.30
Monday 08/03/2026 05:40 PM 5.20 62.70
Monday 08/03/2026 05:50 PM 5.23 63.10
Monday 08/03/2026 06:00 PM 5.17 62.30
Monday 08/03/2026 06:10 PM 5.11 61.50
Monday 08/03/2026 06:20 PM 5.17 62.30
Monday 08/03/2026 06:30 PM 5.16 62.10
Monday 08/03/2026 06:40 PM 5.19 62.50
Monday 08/03/2026 06:50 PM 5.24 63.20

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