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 a $830 million (2016 USD) plan to revamp the dike, today considered one of the United States' most at risk of failing. General Specific Images: Videos: Effects of the 1928 Okeechobee hurricane in Florida The effects of the 1928 Okeechobee hurricane in Florida included at least 2,500 fatalities in the state of Florida, making this the second deadliest tropical cyclone in the history of the contiguous United States, behind only the 1900 Galveston hurricane. The hurricane originated from a tropical depression that formed near Dakar, Senegal, on September 6. Traversing the Atlantic Ocean, the cyclone struck the Lesser Antilles, Puerto