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: Saturday May 23rd, 2026 06:00 AM CDT
River Status: Normal

  Height Flow
Currently 9.49 ft 115 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
  Friday 05/22/2026 07:00 PM 9.80 118.00
  Saturday 05/23/2026 01:00 AM 10.00 121.00
  Saturday 05/23/2026 07:00 AM 10.00 121.00
  Saturday 05/23/2026 01:00 PM 9.90 120.00
  Saturday 05/23/2026 07:00 PM 9.80 118.00
  Sunday 05/24/2026 01:00 AM 9.70 117.00

Observation
  Date (CDT) Stage (ft) Flow (kcfs)
Saturday 05/23/2026 03:10 AM 9.61 116.00
Saturday 05/23/2026 03:20 AM 9.60 116.00
Saturday 05/23/2026 03:30 AM 9.58 116.00
Saturday 05/23/2026 03:40 AM 9.56 116.00
Saturday 05/23/2026 03:50 AM 9.51 115.00
Saturday 05/23/2026 04:00 AM 9.56 116.00
Saturday 05/23/2026 04:10 AM 9.54 115.00
Saturday 05/23/2026 04:20 AM 9.53 115.00
Saturday 05/23/2026 04:30 AM 9.53 115.00
Saturday 05/23/2026 04:40 AM 9.56 116.00
Saturday 05/23/2026 04:50 AM 9.54 115.00
Saturday 05/23/2026 05:00 AM 9.55 115.00
Saturday 05/23/2026 05:10 AM 9.53 115.00
Saturday 05/23/2026 05:20 AM 9.51 115.00
Saturday 05/23/2026 05:30 AM 9.51 115.00
Saturday 05/23/2026 05:40 AM 9.54 115.00
Saturday 05/23/2026 05:50 AM 9.47 114.00
Saturday 05/23/2026 06:00 AM 9.49 115.00
Saturday 05/23/2026 06:10 AM 9.51 115.00
Saturday 05/23/2026 06:20 AM 9.48 115.00

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