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
Okeechobee, Florida Okeechobee, Florida Okeechobee () is a city in Okeechobee County, Florida, United States. As of the 2010 United States Census, the city's population was 5,621, reflecting an increase of 245 (+4.6%) from the 5,376 counted in the 2000 Census. It is the county seat of Okeechobee County. The Lake Okeechobee area was the site of the worst effects of the 1928 Okeechobee Hurricane, the first recorded Category 5 hurricane in the North Atlantic and still one of the deadliest hurricanes ever to strike the US. Okeechobee is served by the Okeechobee County Airport . As of the census of 2000,