What was “Glacial Lake Monongahela?
Glacial Lake Monongahela was formed when outwash, or possibly ice, dammed the northward-flowing Monongahela River and its tributaries at least once, forming a large lake extending south towards Lewis County. This dam was probably located just above the tip of the northern panhandle of West Virginia. At its highest level, Lake Monongahela was 200 miles long and 100 miles wide, and flooded all land below 1,100 feet in elevation in parts of northwestern West Virginia and southwestern Pennsylvania. Another major lake associated with the glacial period was Glacial Lake Teays, located in the Kanawha-Huntington area. Still interested?
