The Great Lakes Water Level Dashboard is a free, online, interactive website that portrays monthly water level information of all the Great Lakes. The dashboard allows the user to view water levels, oscillation/pattern indices, percentages, hydrological input/output, speeds, temperatures, and flow rates all at different time scales.
They can compare water level information across each of the Great Lakes, or look specifically at one Lake at a time.The Great Lakes Water Level Dashboard is designed to support anyone interested in better understanding the long-term variations of water levels on the Great Lakes.
The data is updated frequently so users can download the most up to date data that is portrayed on the website.
As an example of what this tool can do, below is an image of water levels for Lakes Michigan - Huron. You can see that water levels in these lakes have fluctuated quite frequently between 1915 and 2020, going through periods of increases and decreases. Recently, since about 2014, water levels have been rising. The right-most dot (green) portrays the current water level. As of July 3, 2020, Lake Michigan water levels are at 582.22 ft. This is the 6th month in a row where a water level record has been set for Lake Michigan.