Weather Information

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US Army Corps of Engineers

Chicago District Website

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Advanced Hydrologic Prediction Service (AHPS)

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AHPS - Chicago District

District Info

Cumulative Rainfall Map
- Illinois
  Posted 07/21/2020
Lake Michigan Information
- Water Level Data
  Posted 07/21/2020
  - Monthly Mean Lakewide Average Water Levels (Figure)
    Posted 07/21/2020
  - Daily Lakewide Average Water Levels (Figure)
    Posted 07/21/2020
    - Great Lakes Water Level Report - Current Month (feet)
      Posted 07/21/2020
    - Great Lakes Water Level Report - Last Month (feet)
      Posted 07/21/2020
    - Great Lakes Water Level Report - Two Months Ago (feet)
      Posted 07/21/2020
    - Great Lakes Water Level Report - Three Months Ago
      Posted 07/21/2020
- Water Level Forecast
  Posted 07/21/2020
  - Weekly Great Lakes Water Levels Update
    Posted 07/21/2020
  - Monthly Bulletin on Lake Michigan-Huron Water Levels
    Posted 07/21/2020
  - Lake Michigan-Huron Water Level Outlook
    Posted 07/21/2020

Quantitative Precipitation Forecasts (QPF)