Lake Pepin is a naturally occurring lake on the Mississippi River on the border between the U.S. states of Minnesota and Wisconsin. It is located in a valley carved by the outflow of an enormous glacial lake at the end of the last Ice Age.

Why is Lake Pepin a lake?

Lake Pepin is the largest lake on the Mississippi River. It is a naturally occurring lake formed by the backup of water behind sedimentary deposits of the Chippewa River's delta.

What is Lake Pepin known for?

Lake Pepin is now a corridor for water, highway, and rail transportation. Known as the birthplace of water skiing, it hosts a variety of recreational activities.