At its greatest size, the lake was approximately  deep, and  in size (nearly two-thirds the size of Lake Erie). When the lake finally overflowed, it created new drainage channels and rivers flowing south, in the opposite direction of the Teays River.
The lake reached a maximum depth of approximately  and spanned nearly two-thirds the size of Lake Erie. Upon overflowing, it carved out new waterways that flowed southward, diverging from the direction of the Teays River.