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 12th, 2026 05:00 PM CST
River Status: Normal

  Height Flow
Currently 3.71 ft 42.3 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
  Thursday 02/12/2026 06:00 PM 3.80 43.50
  Friday 02/13/2026 12:00 AM 3.90 44.90
  Friday 02/13/2026 06:00 AM 3.90 44.90
  Friday 02/13/2026 12:00 PM 3.90 44.90
  Friday 02/13/2026 06:00 PM 3.90 44.90
  Saturday 02/14/2026 12:00 AM 3.90 44.90

Observation
  Date (CST) Stage (ft) Flow (kcfs)
Thursday 02/12/2026 01:40 PM 3.76 43.00
Thursday 02/12/2026 01:50 PM 3.74 42.70
Thursday 02/12/2026 02:00 PM 3.75 42.80
Thursday 02/12/2026 02:10 PM 3.69 42.00
Thursday 02/12/2026 02:20 PM 3.75 42.80
Thursday 02/12/2026 02:30 PM 3.72 42.40
Thursday 02/12/2026 02:40 PM 3.72 42.40
Thursday 02/12/2026 02:50 PM 3.73 42.60
Thursday 02/12/2026 03:00 PM 3.71 42.30
Thursday 02/12/2026 03:10 PM 3.77 43.10
Thursday 02/12/2026 03:20 PM 3.72 42.40
Thursday 02/12/2026 03:30 PM 3.76 43.00
Thursday 02/12/2026 03:40 PM 3.80 43.50
Thursday 02/12/2026 03:50 PM 3.72 42.40
Thursday 02/12/2026 04:00 PM 3.76 43.00
Thursday 02/12/2026 04:10 PM 3.74 42.70
Thursday 02/12/2026 04:20 PM 3.69 42.00
Thursday 02/12/2026 04:30 PM 3.69 42.00
Thursday 02/12/2026 04:40 PM 3.72 42.40
Thursday 02/12/2026 04:50 PM 3.73 42.60

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