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
Effects of the 1928 Okeechobee hurricane in Florida the area, the flood reversed itself, breaking the dikes along the northern coast of the lake and causing a similar but smaller flooding. Route 98, then known as Conner's Highway, was closed until January, when the bridge across the Onosohatchee River at Taylor Creek was replaced after the original bridge was carried about upstream during the storm. In Okeechobee County, homes along the lake were destroyed by the storm surge, while dwellings within the city of Okeechobee were severely impacted or demolished by winds of at least . However, brick and concrete-structured dwellings received little damage. A number of three-story