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 10th, 2026 11:00 PM CDT
River Status: Normal

  Height Flow
Currently 3.1 ft 61.4 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
  Friday 09/11/2026 07:00 AM 3.40 N/A
  Friday 09/11/2026 01:00 PM 3.40 N/A
  Friday 09/11/2026 07:00 PM 3.30 N/A
  Saturday 09/12/2026 01:00 AM 3.20 N/A
  Saturday 09/12/2026 07:00 AM 3.10 N/A
  Saturday 09/12/2026 01:00 PM 3.10 N/A

Observation
  Date (CDT) Stage (ft) Flow (kcfs)
Thursday 09/10/2026 01:30 PM 2.79 N/A
Thursday 09/10/2026 02:00 PM 2.94 N/A
Thursday 09/10/2026 02:30 PM 2.77 N/A
Thursday 09/10/2026 03:00 PM 2.77 N/A
Thursday 09/10/2026 03:30 PM 2.79 N/A
Thursday 09/10/2026 04:00 PM 2.80 N/A
Thursday 09/10/2026 04:30 PM 2.94 N/A
Thursday 09/10/2026 05:00 PM 2.87 N/A
Thursday 09/10/2026 05:30 PM 2.93 N/A
Thursday 09/10/2026 06:00 PM 3.00 N/A
Thursday 09/10/2026 06:30 PM 2.95 N/A
Thursday 09/10/2026 07:00 PM 3.20 N/A
Thursday 09/10/2026 07:30 PM 3.00 N/A
Thursday 09/10/2026 08:00 PM 3.00 N/A
Thursday 09/10/2026 08:30 PM 3.09 N/A
Thursday 09/10/2026 09:00 PM 3.06 N/A
Thursday 09/10/2026 09:30 PM 3.06 N/A
Thursday 09/10/2026 10:00 PM 3.09 N/A
Thursday 09/10/2026 10:30 PM 3.08 N/A
Thursday 09/10/2026 11:00 PM 3.10 N/A

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