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: Thursday February 26th, 2026 01:00 AM CST
River Status: Normal

  Height Flow
Currently 3.07 ft 33.9 kcfs
Record 31.3 ft 428694 cfs

Forecast
  Date (CST) Stage (ft) Flow (kcfs)
  Wednesday 12/31/1969 06:00 PM 0.00 N/A
  Wednesday 02/25/2026 06:00 PM 2.80 30.50
  Thursday 02/26/2026 12:00 AM 2.90 31.80
  Thursday 02/26/2026 06:00 AM 3.00 33.00
  Thursday 02/26/2026 12:00 PM 3.00 33.00
  Thursday 02/26/2026 06:00 PM 3.10 34.30
  Friday 02/27/2026 12:00 AM 3.20 35.60

Observation
  Date (CST) Stage (ft) Flow (kcfs)
Wednesday 02/25/2026 10:10 PM 3.06 33.80
Wednesday 02/25/2026 10:20 PM 3.02 33.30
Wednesday 02/25/2026 10:30 PM 3.05 33.60
Wednesday 02/25/2026 10:40 PM 3.06 33.80
Wednesday 02/25/2026 10:50 PM 3.05 33.60
Wednesday 02/25/2026 11:00 PM 3.04 33.50
Wednesday 02/25/2026 11:10 PM 3.05 33.60
Wednesday 02/25/2026 11:20 PM 3.04 33.50
Wednesday 02/25/2026 11:30 PM 3.03 33.40
Wednesday 02/25/2026 11:40 PM 3.05 33.60
Wednesday 02/25/2026 11:50 PM 3.05 33.60
Thursday 02/26/2026 12:00 AM 3.08 34.00
Thursday 02/26/2026 12:10 AM 3.04 33.50
Thursday 02/26/2026 12:20 AM 3.07 33.90
Thursday 02/26/2026 12:30 AM 3.07 33.90
Thursday 02/26/2026 12:40 AM 3.08 34.00
Thursday 02/26/2026 12:50 AM 3.08 34.00
Thursday 02/26/2026 01:00 AM 3.07 33.90
Thursday 02/26/2026 01:10 AM 3.07 33.90
Thursday 02/26/2026 01:20 AM 3.06 33.80

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