Mississippi River At Mel Price (alton) Lock And Dam

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Hydrograph

Stage Color Key
19 ft - Near Flood 21 ft - Minor Flood 29 ft - Moderate Flood 34 ft - Major Flood

Latest Observation: Thursday September 17th, 2026 04:00 AM CDT
River Status: Normal

  Height Flow
Currently 4.23 ft 73.4 kcfs
Record 42.72 ft 369500 cfs

Forecast
  Date (CDT) Stage (ft) Flow (kcfs)
  Wednesday 12/31/1969 06:00 PM 0.00 N/A
  Thursday 09/17/2026 07:00 AM 4.20 N/A
  Thursday 09/17/2026 01:00 PM 4.20 N/A
  Thursday 09/17/2026 07:00 PM 4.40 N/A
  Friday 09/18/2026 01:00 AM 4.60 N/A
  Friday 09/18/2026 07:00 AM 4.80 N/A
  Friday 09/18/2026 01:00 PM 4.90 N/A

Observation
  Date (CDT) Stage (ft) Flow (kcfs)
Wednesday 09/16/2026 05:30 PM 4.10 N/A
Wednesday 09/16/2026 06:00 PM 4.08 N/A
Wednesday 09/16/2026 06:30 PM 4.10 N/A
Wednesday 09/16/2026 07:00 PM 4.16 N/A
Wednesday 09/16/2026 07:30 PM 4.15 N/A
Wednesday 09/16/2026 08:00 PM 4.16 N/A
Wednesday 09/16/2026 08:30 PM 4.18 N/A
Wednesday 09/16/2026 09:00 PM 4.18 N/A
Wednesday 09/16/2026 09:30 PM 4.19 N/A
Wednesday 09/16/2026 10:00 PM 4.21 N/A
Wednesday 09/16/2026 10:30 PM 4.21 N/A
Wednesday 09/16/2026 11:00 PM 4.20 N/A
Thursday 09/17/2026 12:00 AM 4.20 N/A
Thursday 09/17/2026 12:30 AM 4.20 N/A
Thursday 09/17/2026 01:00 AM 4.23 N/A
Thursday 09/17/2026 01:30 AM 4.23 N/A
Thursday 09/17/2026 02:00 AM 4.20 N/A
Thursday 09/17/2026 02:30 AM 4.22 N/A
Thursday 09/17/2026 03:00 AM 4.24 N/A
Thursday 09/17/2026 03:30 AM 4.24 N/A

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