Lake Okeechobee Valley and the Everglades. The trough is underlain by clay deposits that compacted more than the limestone and sand deposits did along both coasts of peninsular Florida. Until about 6,000 years ago, the trough was dry land. As the sea level rose, the water table in Florida also rose and rainfall increased. From 6,000 to 4,000 years ago, wetlands formed building up peat deposits. Eventually the water flow into the area created a lake, drowning the wetlands. Along what is now the southern edge of the lake, the wetlands built up the layers of peat rapidly enough (reaching thick) to
Crystal Lake (south Winter Haven, Florida) track on private property to reach the south side of the lake and launch small boats. The Hook and Bullet website says River Lake contains smallmouth bass, yellow perch and white perch. 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 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