https://www.glerl.noaa.gov/data/wlevels/dashboard/
As an example, here is a screen capture of the output from a customized query about the level of Lake Michigan for 2020 to 2025:
- Fig. 1. Visualization of water level data using new NOAA Dashboard to create a custom view.
- NOAA_GreatLakesWaterLevelsDashboard.jpeg (73.25 KiB) Viewed 831 times
The above plot shows that in June-July 2020 Lake Michigan was very close to the all-time high water level for the past 107-years of recordkeeping, with the level at 582.18-feet compared to the all-time record of 582.35, a difference of only 2-inches.
From then the water level has been trending downward, until earlier in 2025 the water was at 577.82, a loss compared to the 2020 peak of 4.36-feet (4-feet 4-inches) of water. However, the recent low-water was still well above the historical low of 576.02-feet by 1.8-feet (1-foot 9.6-inches).