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 County, Florida a family was $35,163. Males had a median income of $25,574 versus $20,160 for females. The per capita income for the county was $14,553. About 11.80% of families and 16.00% of the population were below the poverty line, including 19.90% of those under age 18 and 10.30% of those age 65 or over. Okeechobee County is part of the Heartland Library Cooperative which has 7 branches that serve Okeechobee county and some of the surrounding counties, including Glades, Highlands, Hardee, and DeSoto. Okeechobee County, Florida Okeechobee County () is a county located in the state of Florida. As of the