Under public health guidelines to prevent the spread of the coronavirus, we are working remotely and are here to serve you virtually.

Lake levels

Lake Superior
Charts that show the average annual water levels of Lake Superior recorded since 1860.
 
Lake Michigan and Lake Huron
Charts that show the average annual water levels of Lake Michigan and Lake Huron recorded since 1860.
 
Lake Erie
Charts that show the average annual water levels of Lake Erie recorded since 1860.
 
Lake Ontario
Charts that show the average annual water levels of Lake Ontario recorded since 1860.