Tag Archives: The Boyer Survey: An Archaeological Investigation of Lake Okeechobee

Lake Okeechobee Region, What’s Under It? SLR/IRL

Lake Okeechobee Region, What’s Under It?

My grandfather, J.R. Henderson, was a well-known soil-scientist back in the 1930s for the University of Florida.

I remember him telling me things about cows, plants, and the lands under them when we were driving on the “Sunshine State Parkway,” from Gainesville to Stuart.  I think of my grandfather more these days and believe the study of geology and soils are in my blood although I know almost nothing about them.

My mother’s dad, my grandfather, J.R. Henderson, author of Soils of Florida, 1939:(https://library.wur.nl/WebQuery/file/isric/fulltext/isricu_i16740_001.pdf)

So to educate ourselves and the those young people of the future  we continue our study of  the Boyer Survey of Lake Okeechobee, and today we will look at the section entitled Region Geology.

The authors mention a book by Petuch and Roberts (http://wzanews.com/IMG2/book/general%20geology/everglad%20geology.pdf) and note two formations: The Lake Flirt below and Pamlico above.

So South Florida in a nutshell….

The Lake Flirt Formation is noted to consist of three thin limestone layers the uppermost being caprock. This is often used by landscape companies to beautify our yards. I don’t understand how it is mined without jeopardizing  the aquifer, but that’s another blog…

On top of the capstone and limestone layers are sands from the Pamlico Formation. These sands were blown across the state from east to west forming dunes over thousands of years. There is also clay that “resulted from deposit under Holocene ponds and marshlands.”

Source: Florida’s Fossils: Guide to Location, Identification, and Enjoyment
By Robin C. Brown

That’s just a quick review. But might get you interested again.

It is extremely humbling to refresh one’s memory on all this stuff we learned in grade school, as we are living in “the top layer” of millenniums. We in time, will just be another layer of an ancient coral formation we live upon, Florida. Nonetheless, it is important to know what is around us, above us, and under us. 🙂

From my grandfather’s book: Florida Geological Survey 18th Annual Report, 1927. The map show the various shorelines of Florida as sea levels have risen and fallen.

Satellite map of South Florida, public image ca 2005.
The mole knows what under – he lives there! 🙂

FIS Overview of Florida:

https://earthenvironment.fiu.edu/resources/00_overview_s_fl_gly-1.pdf

Nation Academy of Science, A Brief History of the Everglades: https://www.nap.edu/read/10758/chapter/11

The Boyer Survey: http://www.flarchcouncil.org/reports/BoyerSurveyLakeO.pdf

Caprock for landscaping: http://www.larryscaprockandstone.com/products_cap_rock.asp

Physiographic Regions of Lake Okeechobee, What’s That? SLR/IRL

Water skiing in the St Lucie River/Indian River Lagoon at Michele White’s house with great friend Kevin Wilkinson, 1980.
The Boyer Survey: An Archaeological Investigation of Lake Okeechobee, 2011
SFWMD before and after satellite image effect

As I got to “Physiographic Regions,” when reading the Boyer Archaeological Survey, I had to look up the definition of physiographic. My mind kept wandering to Physical Graffiti, the title of an album by Led Zeppelin, and the fun days of Martin County High School skiing the in St Lucie River/Indian River Lagoon with my best friends.

In retrospect, Lake Okeechobee and the St Lucie River were already dying by the time I was in high school. Today, I wish I had learned more about our ailing ecosystem when I was younger, and not finally caught on when I was 40 over ten years ago. “Catching-on,” this is my hope for the next generation as there are serious impacts we won’t be able to ignore, happening, and on the way. Knowing what “physiographic regions” means will help us understand what we can do.

Physiographic is defined simply as “the branch of geography dealing with natural features and processes.” So the Figure 5. map above shows what the surrounding ecological communities were before they became developed as today’s counties. These areas are labeled as the Eastern Flatlands; the Everglades; the Western Flatlands; Big Cypress Swamp; and the Mangrove and Coastal Marsh.

As we know the Everglades is one of the largest freshwater marshes in the North America and the world. It starts trickling up in the Kissimmee River Basin above Lake Okeechobee. Unfortunately, this area of the map is always cut off so we think in terms of south.

Basin Management Action Plans,. The Kissimmee River is north of Lake O. Florida. TCRPC doc. 2015.

The open marshes of Lake Okeechobee extended from the southern rim of Lake O and the Loxahatchee Slough south to the mouth of the Shark River Slough at Florida Bay and the former Miami River. Florida Bay is presently, and has been, experiencing extensive algae blooms due to lack of fresh water and the once beautiful Miami River, attached by canal (since 1911) to Lake O? “Dead.”

The Boyer Survey image once again for comparison.
Map of Canals 1924 Florida Archives.

The eastern and western flatlands to the east and west of Lake Okeechobee (Stuart/Ft Meyers ) were similar in vegetation types and animals. The Boyer Survey notes “both can be described as mosaic landscapes consisting of wet prairie, palmetto and dry prairies, pine forest or flatwoods, cypress forests, mixed swamp forests as well as ponds and sloughs; these areas were low, sandy, and poorly drained.” The Loxahatchee River drained the eastern flatlands into the Atlantic, and the Caloosahatchee River drained the western flatlands into the Gulf of Mexico. Today these waters flow by way of the ACOE/SFWMD Central & Southern Florida  project’s water control structures slowly making everything as “dead” as the Miami River.

Until we treat waterway funding like roads, (FDOT:http://www.fdot.gov/transit/functionsgrantsadministration.shtm) Mother Nature’s water highways will become even more of a backed-up, misdirected, putrid mess. We must stop trying to direct her like a God, and let more of her natural features return. After all, Nature is a House of the Holy and we never know when the Rain Song will begin…

The Rain Song, Led Zeppelin, Houses of the Holy, Album Physical Graffiti link: https://www.youtube.com/watch?v=TRt4hQs3nH0

1986 NYT article on first signs of algae in Lake Okeechobee: https://www.nytimes.com/1986/08/23/us/florida-fears-that-lake-okeechobee-is-dying.html