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: Sunday September 20th, 2026 05:30 AM CDT
River Status: Normal

  Height Flow
Currently 7.7 ft 124 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
  Sunday 09/20/2026 07:00 AM 7.50 N/A
  Sunday 09/20/2026 01:00 PM 7.50 N/A
  Sunday 09/20/2026 07:00 PM 7.50 N/A
  Monday 09/21/2026 01:00 AM 7.50 N/A
  Monday 09/21/2026 07:00 AM 7.60 N/A
  Monday 09/21/2026 01:00 PM 7.70 N/A

Observation
  Date (CDT) Stage (ft) Flow (kcfs)
Saturday 09/19/2026 02:30 PM 6.44 N/A
Saturday 09/19/2026 03:00 PM 6.40 N/A
Saturday 09/19/2026 03:30 PM 6.68 N/A
Saturday 09/19/2026 04:00 PM 6.79 N/A
Saturday 09/19/2026 04:30 PM 6.80 N/A
Saturday 09/19/2026 05:00 PM 6.88 N/A
Saturday 09/19/2026 05:30 PM 6.99 N/A
Saturday 09/19/2026 06:00 PM 7.01 N/A
Saturday 09/19/2026 06:30 PM 7.01 N/A
Saturday 09/19/2026 07:00 PM 7.06 N/A
Saturday 09/19/2026 07:30 PM 7.07 N/A
Saturday 09/19/2026 08:00 PM 7.11 N/A
Saturday 09/19/2026 08:30 PM 7.13 N/A
Saturday 09/19/2026 09:00 PM 7.15 N/A
Sunday 09/20/2026 02:30 AM 7.64 N/A
Sunday 09/20/2026 03:00 AM 7.64 N/A
Sunday 09/20/2026 03:30 AM 7.61 N/A
Sunday 09/20/2026 04:00 AM 7.72 N/A
Sunday 09/20/2026 04:30 AM 7.66 N/A
Sunday 09/20/2026 05:00 AM 7.68 N/A

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