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: Tuesday September 16th, 2025 02:30 PM CDT
River Status: Normal

  Height Flow
Currently 4.06 ft 70.9 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
  Tuesday 09/16/2025 07:00 PM 3.90 69.10
  Wednesday 09/17/2025 01:00 AM 3.80 68.20
  Wednesday 09/17/2025 07:00 AM 3.80 68.20
  Wednesday 09/17/2025 01:00 PM 3.70 67.30
  Wednesday 09/17/2025 07:00 PM 3.60 66.30
  Thursday 09/18/2025 01:00 AM 3.50 65.40

Observation
  Date (CDT) Stage (ft) Flow (kcfs)
Tuesday 09/16/2025 04:30 AM 3.82 68.40
Tuesday 09/16/2025 05:00 AM 3.82 68.40
Tuesday 09/16/2025 05:30 AM 3.81 68.30
Tuesday 09/16/2025 06:00 AM 3.78 68.00
Tuesday 09/16/2025 06:30 AM 3.80 68.20
Tuesday 09/16/2025 07:00 AM 3.85 68.60
Tuesday 09/16/2025 07:30 AM 4.17 72.50
Tuesday 09/16/2025 08:00 AM 3.88 68.90
Tuesday 09/16/2025 08:30 AM 3.96 69.60
Tuesday 09/16/2025 09:00 AM 3.95 69.50
Tuesday 09/16/2025 09:30 AM 4.06 70.90
Tuesday 09/16/2025 10:00 AM 3.94 69.50
Tuesday 09/16/2025 10:30 AM 3.92 69.30
Tuesday 09/16/2025 11:00 AM 3.95 69.50
Tuesday 09/16/2025 11:30 AM 3.94 69.50
Tuesday 09/16/2025 12:00 PM 3.93 69.40
Tuesday 09/16/2025 12:30 PM 3.95 69.50
Tuesday 09/16/2025 01:00 PM 4.03 70.40
Tuesday 09/16/2025 01:30 PM 4.05 70.70
Tuesday 09/16/2025 02:00 PM 4.06 70.90

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