Tag Archives: draining Florida

Tales of the Southern Loop, Stuart to Boyton, Part 1

Tales of the Southern Loop, Stuart to Boyton, Part 1

It was 9:36 am, September 3, 2020, and we were preparing to leave the Harborage Marina in our hometown of Stuart. The sun blazed down upon me as I  stood on the bow of the Mainship 400 trawler we had christened ADRIFT. The day had arrived. Ed and I were off -for three weeks- to experience our first real boating adventure- the Southern Loop. 

Ed yelled down from the helm. “So you know what to do, right?”

“Of course Captain!” I reviewed: 1. Check wind and tide direction. 2. Release the stern spring line. 3. Release the the bow spring line. 4. Release the bow line. 5. Release the stern line. 6. Make sure boat is clearing the dock. 7. Relay message to Captain. 

“Aye, Aye, Captain!” I yelled back over the sound of the diesel engine. Then just to tease him, I asked: “Is it the front, or back spring line first?”

Ed did not smile…the motor growled, I moved starboard, quickly, carefully, and methodically removing some lines from their cleats and bringing others on board.

The trawler inched forward like a sputtering whale. 

“You’re clear!” I yelled, watching the transom just miss the dock piling.  

We slowly motored out against the tide, and our adventure had begun. I walked to the bow looking over the wide and beautiful St Lucie. The trip through the St Lucie, the Jupiter Narrows, the Loxahatchee, Lake Worth, and the canal-like portion of the Intercostal Waterway to Boyton would be familiar, but from there it was all new territory.

  1. St Lucie/Indian River Lagoon looking towards St Luice Inlet

2. Jupiter Narrows entering Loxahatchee and Jupiter Inlet area

3. Jupiter Lighthouse first lit in 1860, Loxahatchee River

4. Channelized ICW from Loxahatchee River in Jupiter south to Lake Worth

5. Lake Worth

6. Port of Palm Beach just west of Peanut Island and inlet

7. Lake Worth, the Alba Hotel, built in 1926, is today’s Biltmore Condominium 

Ed, and I planned for our Southern Loop adventure for over a year. We took hands-on classes. We altered our schedules. We read books. Most important, we promised not to kill each other. 

This blog series is meant to share our adventure and learn about our South Florida  waterways with the help of an incredible book I read along the way, Landscapes and Hydrology of the Predrainage Everglades, written by five South Florida Water Management District scientists, led by Christopher McCoy. 

By the time we arrived at Boyton Harbor Marina the sun was setting. It was time to have a cocktail at a classic establishment, the Banana Boat or TWO GEORGES, historically Lyman’s Commercial Fishing Dock, now part of the Community Redevelopment Area. 

A moist breeze filled the air. Ed inquired. “What’s our water lesson today?”

I took a deep swig of my daiquiri, “Well something new I learned is that there used to be a chain of ponds just west of here. Extensive. 20 miles of them! 2 miles wide…

Boyton sits not too far below Lake Worth in Palm Beach County. Chris McVoy’s book notes that in this area, not only was Lake Worth opened up to the ocean, and the gigantic arm of the Loxahatchee Slough -once connected with the Everglades- swallowed up by development, but  there was a  twenty mile chain of freshwater ponds – also described as a sawgrass marsh- just west of here, and now it’s the area of Congress Boulevard!”

“Really,” replied Ed. He took a swig of his beer. We drained the swamp right?”

My brain was frozen. “Sometimes I wish we didn’t. Not so much anyway…”

The two images above are from Landscapes and Hydrology of the Predrainage Everglades and compare the area from the Loxahatchee to the Freshwater Ponds east of the Northern Everglades from 1850 to present. The contrasting images reveal many aspects of the environment that we don’t think about today. Going clockwise from noon. The connection of the C-44 to the St Lucie River; the channelization for the ICW along Florida’s east coast; the cutting of pine and cypress forests; the “disappearance” of the Loxahatchee Slough’s giant red arm up from the Everglades and across Palm Beach County to the Loxahatchee River in Jupiter; the replacement of the sawgrass plains with the Everglades Agricultural Area; the man-made inlets and the opening to the ocean of Lake Worth; and last but not least, the very rarely talked about chain of freshwater ponds that that have been drained and are now the area of Congress Boulvard. All of the drainage allows us to live here and helped agriculture in the past; however we have impaired our waters. Images, pages 48 &49, Landscapes and Hydrology of the Predrainage Everglades, SFWMD, Christopher McVoy and others, 2011. 

Red lines equal pre-drainage boarder of the Everglades; yellow lines equal pre-drainage landscape boundaries: primarily sawgrass plains and Ridge and Slough with visible tree islands of which east coast development has heavily encroached. You can see the WCA (water conservation areas) along eastern Atlantic Ridge. You can recognize this because they are the only areas with ridge and slough water pattern remaining. These areas, although protected, are now water impoundments since the ACOE built the Central and South Florida Project after the 1947 flood. Tomorrow, we will learn how the Everglades’ waters once exited to the Atlantic Ocean right through parts of Florida’s east coast when we continue our trip from Boyton to Biscayne Bay/Miami! 

 

Current Canal Network of SF w/Historic Imagery 1940-1953 Map, SFMWD

South Florida Water Management District (SFWMD) FEATURED MAPS: 5, *6, 7 https://sfwmd.maps.arcgis.com/apps/MinimalGallery/index.html?appid=1facf32f199240b49a326432258c102f

Today I am very excited to begin sharing maps created by SFWMD Supervisor of Geospatial Mapping, Dr Ken Chen, and team: Lexie Hoffart, Nicole Miller, and Erika Moylan. These maps allow us to “see” Florida in a way never seen before! 

I will start first with the map entitled Current Canal Network of South Florida with Historic Imagery 1940  to 1953 (298-linework). This map is best viewed after you export the PDF to your desktop. In Safari this can be done by linking to SWMDCurrentCanalNetworkHistoricImages, then “File” and “Export as a PDF.” 

Once downloaded to you desktop, you can zoom in and move up and down where you wish to go. What will you see? You will see the modern mapped canal network of South Florida atop hundreds of historic aerial photographs that have been stitched together. Incredible! 

Tommy Strowd, former Assistant Executive Director of Operations, Maintenance & Construction at the SFWMD now Executive Director of the Lake Worth Drainage District eloquently states: “These maps are beautiful completed puzzles that clearly show probably the best photographic evidence of what the pre-drainage landscape looked like before the the C&SF Project and the vast system of secondary and tertiary drainage ditches were constructed.”

So this map juxtaposes Florida’s pre-C&SF Project drainage landscape to the canals that drain that remaining landscape today…

The current canal system includes the Primary System of the South Florida Water Management District, Works of the District; Other Canals Streams or Rivers; and the Secondary /Tertiary System including 298 Special Drainage District canals, and other canals, streams or rivers.

As an example, let’s zoom into St Lucie, Martin, and northern Palm Beach Counties. The pastel colors denote 298 Special Drainage Districts, some like the Lake Worth Drainage District go back to the 1913 General Drainage Laws of Florida. The Central and South Florida Project -what we think of when we think of the SFWMD-was constructed starting in 1948. Just a quick glance reveals the extensive wetlands that have been drained by the primary and secondary/tertiary systems. Wow! Now we can “see” how we drained the land and contemplate our water past as well as our water future. 

What a great learning tool to understand and improve water quality!

Close up: St Lucie and Martin County: primary SFWMD canals (blue large), along with secondary/tertiary (smaller blue) some could be under purview of county or otherwise. Independent special/drainage districts-298s (color). Many historic creek/s were made into canals such as today’s C-243 and C24 in St Lucie County that discharge into St Lucie River. This area was once home to the famed Halpatiokee Swamp.
Palm Beach County has 18 298 special drainage districts! I counted a total of 66 within the SFWMD C&SF boarders.

To understand the creation and complexity of the maps I am including the following words of Dr Ken Chen  Ph.D., GISP, Supervisor, Geospatial Mapping Services UnitInformation Technology Bureau, South Florida Water Management District. I had asked him to describe what was entailed with the historic imaging. Thank you to Dr Chen and Team whose talent, research, and time made these maps possible. 

  1. Historical aerials (1940 – 1953)

“Sources of historical aerials, especially 1940s and 1950s, are very scarce, especially for such a large area in South Florida. Therefore our focus was to get whatever we could find online regardless cloud cover or quality of images. As you know, all of those old images were recorded in an analog format (i.e. film or paper), instead of digital. Some (maybe all) of those films/paper images were later scanned and saved to a digital format and made available online. Scanning usually results in loss of imagery quality. For this canal map project, we were fortunately able to locate aerial index images (I would call them aerials index panels), after weeks of online research including data download and review. Each index panel displays a group of aerials in sequence over a specific area. For instance, say 200 images from #1 to #200 over an entire county. These index panels are usually used for aerial imagery management and archival purposes, just like a library index card for images. There is no information at all regarding how those index panels were created, but they are seemingly made via camera shooting or scanning of a group of stacked paper images or positive films. The index panels are simple graphics or pictures without any geospatial information, such as projection, coordinate system etc. The first step to process these index panels, prior to mosaicking, was to geo-rectify and inject geospatial information into the images. To do so staff needed to identify ground control points. It’s very challenging to identify those points in those very old images due to lack of apparent landmarks, e.g. road intersections. This is particularly difficult in the middle of nowhere across the vast wetlands in 1940s-1950s. So staff tried to use a very few of the intersections between rivers, canals and a few major roads to geo-rectify the panels and assigned appropriate geospatial information into them to make them georeferenced images. Then staff clipped each panel image to trim out the white or black edges before stitching all of them together for the majority of south Florida.

The original aerials were collected by the U.S. Dept of Agriculture. The aerials index panels were obtained from the Univ. of Florida’s Imagery Library. One thing to note – it’s very evident that there are strong image vignetting effects in the old aerials – bright in the center and getting darker toward the edges. That is an inherent optical artifact in the analog images and can not be corrected during the post processing.

This may be more than you asked for. I’m not sure if I have explained this clearly. To summarize it, this process can be simply illustrated in the following format:

Online search of available sources of data -> data download and review to accept or reject -> identify ground control points (GCP) in prep for image processing -> Using GCPs to georectify the index panels -> inject geospatial information into the panel pictures to make them georeferenced images -> remove the white/black edges -> Mosaick all georectified index panel images -> clip the mosaic to the district’s boundaries before use in the maps.

I forgot to mention the number of historical aerials we used to create the historical mosaic. We used totally 84 aerial index panels. Each panel consists of roughly 50+ to 200+ individual aerials, depending upon the geographic area each panel covers. I can’t get the exact number of aerials, my best guess the number would be ~7,000+-12,000.”

-Ken

Dr Chen