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 1st, 2026 09:30 PM CDT
River Status: Normal

  Height Flow
Currently 5.25 ft 88.3 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
  Wednesday 09/02/2026 07:00 AM 5.30 N/A
  Wednesday 09/02/2026 01:00 PM 5.30 N/A
  Wednesday 09/02/2026 07:00 PM 5.30 N/A
  Thursday 09/03/2026 01:00 AM 5.20 N/A
  Thursday 09/03/2026 07:00 AM 5.20 N/A
  Thursday 09/03/2026 01:00 PM 5.10 N/A

Observation
  Date (CDT) Stage (ft) Flow (kcfs)
Tuesday 09/01/2026 11:30 AM 5.04 N/A
Tuesday 09/01/2026 12:00 PM 5.01 N/A
Tuesday 09/01/2026 12:30 PM 5.16 N/A
Tuesday 09/01/2026 01:00 PM 5.17 N/A
Tuesday 09/01/2026 01:30 PM 5.19 N/A
Tuesday 09/01/2026 02:00 PM 5.26 N/A
Tuesday 09/01/2026 02:30 PM 5.26 N/A
Tuesday 09/01/2026 03:00 PM 5.25 N/A
Tuesday 09/01/2026 03:30 PM 5.25 N/A
Tuesday 09/01/2026 04:00 PM 5.27 N/A
Tuesday 09/01/2026 04:30 PM 5.25 N/A
Tuesday 09/01/2026 05:00 PM 5.24 N/A
Tuesday 09/01/2026 05:30 PM 5.28 N/A
Tuesday 09/01/2026 06:00 PM 5.29 N/A
Tuesday 09/01/2026 06:30 PM 5.26 N/A
Tuesday 09/01/2026 07:00 PM 5.25 N/A
Tuesday 09/01/2026 07:30 PM 5.26 N/A
Tuesday 09/01/2026 08:00 PM 5.25 N/A
Tuesday 09/01/2026 08:30 PM 5.25 N/A
Tuesday 09/01/2026 09:00 PM 5.25 N/A

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