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
Southwest Florida League Baseball spring training, with teams informally organized into the "Grapefruit League." , Southwest Florida hosts the following major league teams for spring training: "Communities listed have a population greater than 30,000 according to the 2000 census." Southwest Florida Southwest Florida is the region along the southwest Gulf coast of the U.S. state of Florida. The area is known for its sugar white sand beaches, lush tropical landscape, and winter resort economy. Definitions of the region vary, though its boundaries are generally considered to put it south of the Tampa Bay area, west of Lake Okeechobee, and mostly north of