Another Reason 30A Is So Special

Dated: 04/19/2017

Views: 193

30A Coastal Dune Lakes

 The uniqueness of Coastal Dune Lakes on 30A and why they are so fragile:


Sometimes it is easy to take for granted the beauty that surrounds us on 30A.  We are blessed with sugar white sand, perfectly clear gulf water that can range in color from deep blue to emerald green on any given day, all sorts of wildlife, multiple state parks, and the coastal dune lakes.  As with most beach areas, our ecosystem is fragile and that fact is often forgotten.   


The coastal dune lakes are a very unique phenomenon that many people know very little about.  We pass them driving down 30A or walking/biking on the trails.  Have you ever stopped to wonder how they are formed?  Have you ever been fortunate to see when one of the lakes breaks through and creates an outflow to the gulf?  If so, you got to witness a very special phenomenon.


Coastal dune lakes are extremely rare and are found in limited amounts only in Madagascar, Australia, New Zealand, and in the United States in Oregon, South Carolina, and NW Florida.  South Walton (30A) is home to 15 of these lakes along 26 miles of coastline.   Coastal dune lakes are defined as bodies of water in the dune ecosystem and within two miles of the coast and tend to be shallow.  The 15 lakes in our area are all different sizes and each has a different personality.  The lake water is generally tea or black colored due to natural tannins from leaves falling in and not harmful.


The 30A coastal dune lakes develop from various coastal processes.  They are mainly formed when sand deposition fills an inlet to a tidal basin or lagoon. These lakes are a vital part of our ecosystem since they are home to many different birds and animals. They also filter and store water for the wetland systems.  When a lake reaches its peak level, it breaks through the dune system and beach and empties into the gulf.  The channel that forms is called an outflow.  Depending on tides and wind, saltwater could flow back up to the lake, along with saltwater plants and animals.  Due to the different length of outfalls and other environmental factors, some of the dune lakes are completely freshwater, some brackish, and some salty with varying degrees of salinity depending on the lake stage.


For a link to the different dune lakes on 30A along with pictures, please click the link below: http://sowal.com/coastal-dune-lakes


To search for 30A properties close to the coastal dune lakes, click below:

https://goo.gl/fCi83d

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Stacey Petrucci

After years of vacationing along the Emerald Coast and falling in love with this beautiful area, I was fortunate enough to fulfill my dream to relocate here from Dallas Texas and live on the worlds mo....

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