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 June 20th, 2026 04:00 PM CDT
River Status: Normal

  Height Flow
Currently 18.42 ft 292 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 06/20/2026 07:00 PM 18.50 N/A
  Sunday 06/21/2026 01:00 AM 18.40 N/A
  Sunday 06/21/2026 07:00 AM 18.30 N/A
  Sunday 06/21/2026 01:00 PM 18.30 N/A
  Sunday 06/21/2026 07:00 PM 18.20 N/A
  Monday 06/22/2026 01:00 AM 18.10 N/A

Observation
  Date (CDT) Stage (ft) Flow (kcfs)
Saturday 06/20/2026 06:30 AM 18.79 N/A
Saturday 06/20/2026 07:00 AM 18.77 N/A
Saturday 06/20/2026 07:30 AM 18.75 N/A
Saturday 06/20/2026 08:00 AM 18.73 N/A
Saturday 06/20/2026 08:30 AM 18.70 N/A
Saturday 06/20/2026 09:00 AM 18.68 N/A
Saturday 06/20/2026 09:30 AM 18.66 N/A
Saturday 06/20/2026 10:00 AM 18.64 N/A
Saturday 06/20/2026 10:30 AM 18.62 N/A
Saturday 06/20/2026 11:00 AM 18.60 N/A
Saturday 06/20/2026 11:30 AM 18.58 N/A
Saturday 06/20/2026 12:00 PM 18.57 N/A
Saturday 06/20/2026 12:30 PM 18.55 N/A
Saturday 06/20/2026 01:00 PM 18.53 N/A
Saturday 06/20/2026 01:30 PM 18.51 N/A
Saturday 06/20/2026 02:00 PM 18.49 N/A
Saturday 06/20/2026 02:30 PM 18.47 N/A
Saturday 06/20/2026 03:00 PM 18.46 N/A
Saturday 06/20/2026 03:30 PM 18.44 N/A
Saturday 06/20/2026 04:00 PM 18.42 N/A

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