Lake Size: 400 Acres
Latitude: 41.7181
Longitude: -84.6500
Counties: Hillsdale County
Lake Management: Lake Diane Property Owners Association

Information: American Wonderland Corporation began developing Lake Diane in 1964 with the construction of a dam on a tributary to Clark Fork Creek. Two spring fed, natural lakes located on the tributary, Goforth and Hagerman, were inundated when the reservoir was created. The lands west of Lake Diane (to the left as you drive in), were platted as 1/4 to 1/3 acre lots and put up for sale. On Sampson Road, there are still two farm homes remaining which are not included in the original plat. Roads surrounding Lake Diane were only to be used by property owners and their guests. Property owners were also required to have decals on their automobiles and only the property owners and their guests were allowed on lake property. Mr. Floren Klopfenstein became the President of Wonderland Realty Corporation in 1966 and continued to sell lots which were located on the waterfront and lots located on the back of the property. The lake was named after Mr. Klopfenstein’s daughter Diane. In the summer of 1966, East Diane Drive was stretched out from Point Drive to meet where the shelter house is now. This was done to allow the east and south sections of the lake to be flooded so Lake Diane could be enlarged. Also during this time period, several parks were created for access to the lake.