Lake Pepin Winter Ice Readings

It won’t be long until the U.S. Army Corps of Engineers, St. Paul District survey team, will be taking ice readings on Lake Pepin.

The Corps takes ice measurements on Lake Pepin annually to forecast the navigational outlook. The lake’s ice is the last major barrier for vessels reaching the head of the navigation channel in St. Paul.

Lake Pepin ice thickness measurements typically start in mid-February and are conducted on a weekly basis.

Measurements are reported from each mile on the Upper Mississippi River between mile 765 and 786.