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 July 6th, 2026 11:00 AM CDT
River Status: Normal

  Height Flow
Currently 9.18 ft 111 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 07/06/2026 07:00 PM 10.00 121.00
  Tuesday 07/07/2026 01:00 AM 10.40 125.00
  Tuesday 07/07/2026 07:00 AM 10.60 128.00
  Tuesday 07/07/2026 01:00 PM 11.10 134.00
  Tuesday 07/07/2026 07:00 PM 11.50 138.00
  Wednesday 07/08/2026 01:00 AM 11.80 142.00

Observation
  Date (CDT) Stage (ft) Flow (kcfs)
Monday 07/06/2026 07:40 AM 9.06 110.00
Monday 07/06/2026 07:50 AM 9.07 110.00
Monday 07/06/2026 08:00 AM 9.10 110.00
Monday 07/06/2026 08:10 AM 9.08 110.00
Monday 07/06/2026 08:20 AM 9.13 110.00
Monday 07/06/2026 08:30 AM 9.05 109.00
Monday 07/06/2026 08:40 AM 9.09 110.00
Monday 07/06/2026 08:50 AM 9.08 110.00
Monday 07/06/2026 09:00 AM 9.10 110.00
Monday 07/06/2026 09:10 AM 9.06 110.00
Monday 07/06/2026 09:20 AM 9.07 110.00
Monday 07/06/2026 09:30 AM 9.11 110.00
Monday 07/06/2026 09:40 AM 9.08 110.00
Monday 07/06/2026 09:50 AM 9.09 110.00
Monday 07/06/2026 10:00 AM 9.12 110.00
Monday 07/06/2026 10:10 AM 9.11 110.00
Monday 07/06/2026 10:20 AM 9.11 110.00
Monday 07/06/2026 10:30 AM 9.13 110.00
Monday 07/06/2026 10:40 AM 9.15 111.00
Monday 07/06/2026 10:50 AM 9.15 111.00

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