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 August 23rd, 2026 08:30 PM CDT
River Status: Normal

  Height Flow
Currently 7.6 ft 122 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
  Monday 08/24/2026 07:00 AM 7.30 N/A
  Monday 08/24/2026 01:00 PM 7.10 N/A
  Monday 08/24/2026 07:00 PM 7.00 N/A
  Tuesday 08/25/2026 01:00 AM 6.80 N/A
  Tuesday 08/25/2026 07:00 AM 6.70 N/A
  Tuesday 08/25/2026 01:00 PM 6.60 N/A

Observation
  Date (CDT) Stage (ft) Flow (kcfs)
Sunday 08/23/2026 10:00 AM 8.07 N/A
Sunday 08/23/2026 11:00 AM 7.95 N/A
Sunday 08/23/2026 11:30 AM 8.00 N/A
Sunday 08/23/2026 12:00 PM 7.98 N/A
Sunday 08/23/2026 12:30 PM 8.00 N/A
Sunday 08/23/2026 01:00 PM 8.01 N/A
Sunday 08/23/2026 01:30 PM 7.99 N/A
Sunday 08/23/2026 02:00 PM 7.99 N/A
Sunday 08/23/2026 02:30 PM 7.82 N/A
Sunday 08/23/2026 03:00 PM 7.69 N/A
Sunday 08/23/2026 03:30 PM 7.63 N/A
Sunday 08/23/2026 04:00 PM 7.56 N/A
Sunday 08/23/2026 04:30 PM 7.52 N/A
Sunday 08/23/2026 05:00 PM 7.49 N/A
Sunday 08/23/2026 05:30 PM 7.51 N/A
Sunday 08/23/2026 06:00 PM 7.43 N/A
Sunday 08/23/2026 06:30 PM 7.43 N/A
Sunday 08/23/2026 07:00 PM 7.47 N/A
Sunday 08/23/2026 07:30 PM 7.46 N/A
Sunday 08/23/2026 08:00 PM 7.55 N/A

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