Flat Lake   Be the first to submit input for Flat Lake. If you have info on Flat Lake, Horry County, South Carolina please submit it here to improve this web site.          These outdoors activities are available near Flat Lake.   Lakes Near Flat Lake: Graves Lake, Marion County, 7 miles away   Public Lands Near Flat Lake: Little Pee Dee State Park, South Carolina, 24 miles away Huntington Beach State Park, South Carolina, 29 miles away Myrtle Beach State Park, South Carolina, 30 miles away   Hotels Near Flat Lake: Sleep Inn Conway, Conway, 14 miles away Quality Inn Mullins, Mullins, 16 miles away The Grove-The Inn on Harlee, Marion, 17 miles away Days Inn Conway - Myrtle Beach, Conway, 17 miles away Econo Lodge Conway, Conway, 17 miles away