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
Clewiston, Florida Clewiston, Florida Clewiston is a city in Hendry County, Florida, United States. Its location is on the Atlantic coastal plain. The population was 7,155 at the 2010 census, up from 6,460 at the 2000 census. The estimated population in 2015 was 7,505. The city is located on the south bank of Lake Okeechobee, and the Lake Okeechobee Scenic Trail passes through the edge of the city. The city is home to the Clewiston Museum and the Dixie Crystal Theatre. The area has been home to Seminole tribe members and sugar plantations. The Ah-Tah-Thi-Ki Seminole Indian Museum is located 32 miles