Treasure Cove Home Owner's Association, Inc. consist of 23 Channel front homes and lots connected to Grand Lake St. Mary’s which is located one mile north of Montezuma at the corner of Coldwater Beach Rd and St. Rt. 219 Celina Ohio Mercer Couny. The Greater Grand Lake St. Mary’s Region is bordered by the Cities of Celina and St. Mary’s in Mercer and Auglaize Counties.
