Crystal Lake (south Winter Haven Florida)
 Crystal Lake is a circular natural freshwater lake with a small cove on its northwest corner on the south side of Winter Haven Florida. It has a 35.93-acre (145400 m2) surface area. This Crystal Lake is one of seven Crystal Lakes in Polk County Florida. The Polk County Water Atlas says it is also sometimes called Lake Cunningham. Crystal Lake is bordered on the north and northwest by residences.