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: Tuesday June 30th, 2026 01:00 PM CDT
River Status: Normal

  Height Flow
Currently 7.21 ft 87.5 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
  Tuesday 06/30/2026 07:00 PM 7.40 89.80
  Wednesday 07/01/2026 01:00 AM 7.20 87.40
  Wednesday 07/01/2026 07:00 AM 7.00 85.00
  Wednesday 07/01/2026 01:00 PM 6.80 82.70
  Wednesday 07/01/2026 07:00 PM 6.60 80.40
  Thursday 07/02/2026 01:00 AM 6.40 78.10

Observation
  Date (CDT) Stage (ft) Flow (kcfs)
Tuesday 06/30/2026 09:40 AM 7.38 89.60
Tuesday 06/30/2026 09:50 AM 7.37 89.40
Tuesday 06/30/2026 10:00 AM 7.37 89.40
Tuesday 06/30/2026 10:10 AM 7.37 89.40
Tuesday 06/30/2026 10:20 AM 7.34 89.10
Tuesday 06/30/2026 10:30 AM 7.24 87.90
Tuesday 06/30/2026 10:40 AM 7.38 89.60
Tuesday 06/30/2026 10:50 AM 7.34 89.10
Tuesday 06/30/2026 11:00 AM 7.35 89.20
Tuesday 06/30/2026 11:10 AM 7.39 89.70
Tuesday 06/30/2026 11:20 AM 7.39 89.70
Tuesday 06/30/2026 11:30 AM 7.42 90.00
Tuesday 06/30/2026 11:40 AM 7.37 89.40
Tuesday 06/30/2026 11:50 AM 7.36 89.30
Tuesday 06/30/2026 12:00 PM 7.39 89.70
Tuesday 06/30/2026 12:10 PM 7.28 88.40
Tuesday 06/30/2026 12:20 PM 7.34 89.10
Tuesday 06/30/2026 12:30 PM 7.26 88.10
Tuesday 06/30/2026 12:40 PM 7.22 87.60
Tuesday 06/30/2026 12:50 PM 7.15 86.80

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