The Great Lakes are a natural feature.
No, Lake Erie is not the only natural lake in Ohio. While it is the largest lake in the state and one of the Great Lakes, Ohio also has several other natural lakes, such as Grand Lake St. Marys, which is one of the largest natural lakes, though it has been altered for water management. Most lakes in Ohio are man-made, but there are a few natural ones alongside Lake Erie.
The Erie canal is 100% man made.
Payette lake is a natural lake and not a man made lake.
Man-made: Pymatuning Lake Natural: Harvey's Lake
Lake Texoma in a man-made lake. In fact, the only natural lake in Texas is Lake Caddo.
It is a natural lake
Man made
It is man made.
Well, it depends on your definition of "in Ohio", but Lake Erie certainly is NOT man-made.
natural
All lakes in Georgia are man made. This does not include the swamp in south Georgia which are natural, protected wet lands.
No, it is natural.