Whitman O'Neill notes that NJ's "Great Lake" is a glacial lake. Maryland's Great Lake is actually man-made and less than 100 years old! Deep Creek Lake, the largest lake in the state, is located in the mountains in the westernmost end of the state (about 4 miles from W.Va in places and about 40 miles from Pittsburgh). It was created by a power company in the 1920's by damming streams and feeders to the Youghioheny River in between the various mountains in the area, creating a very deep spider-shaped lake with considerable shoreline but no huge superficies. A couple years ago, the power co., about to go out of business, announced it would sell the lake, which created much consternation since it's a very popular vacation and retirement spot and everyone was worried some developer with deep pockets would buy it and ruin the whole area. Fortunately, the state stepped in, seized it by eminent domain, and bought it. Thus we have the very strange fact of a state's largest lake not only quite new and artificial, but an object of commerce.
