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: Saturday May 23rd, 2026 07:30 AM CDT
River Status: Normal

  Height Flow
Currently 16.62 ft 259 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
  Saturday 05/23/2026 07:00 AM 16.70 N/A
  Saturday 05/23/2026 01:00 PM 16.60 N/A
  Saturday 05/23/2026 07:00 PM 16.40 N/A
  Sunday 05/24/2026 01:00 AM 16.20 N/A
  Sunday 05/24/2026 07:00 AM 15.80 N/A
  Sunday 05/24/2026 01:00 PM 15.40 N/A

Observation
  Date (CDT) Stage (ft) Flow (kcfs)
Friday 05/22/2026 09:30 PM 16.64 N/A
Friday 05/22/2026 10:00 PM 16.65 N/A
Friday 05/22/2026 10:30 PM 16.65 N/A
Friday 05/22/2026 11:00 PM 16.65 N/A
Friday 05/22/2026 11:30 PM 16.65 N/A
Saturday 05/23/2026 12:00 AM 16.66 N/A
Saturday 05/23/2026 12:30 AM 16.66 N/A
Saturday 05/23/2026 01:00 AM 16.66 N/A
Saturday 05/23/2026 01:30 AM 16.66 N/A
Saturday 05/23/2026 02:00 AM 16.66 N/A
Saturday 05/23/2026 02:30 AM 16.66 N/A
Saturday 05/23/2026 03:00 AM 16.66 N/A
Saturday 05/23/2026 03:30 AM 16.66 N/A
Saturday 05/23/2026 04:00 AM 16.65 N/A
Saturday 05/23/2026 04:30 AM 16.65 N/A
Saturday 05/23/2026 05:00 AM 16.65 N/A
Saturday 05/23/2026 05:30 AM 16.64 N/A
Saturday 05/23/2026 06:00 AM 16.64 N/A
Saturday 05/23/2026 06:30 AM 16.63 N/A
Saturday 05/23/2026 07:00 AM 16.63 N/A

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