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Central to our mission in maintaining the navigational channel connecting the Indian River Lagoon and the Atlantic Ocean, the Sebastian Inlet District is responsible for bypassing sand that migrates into the inlet system to downdrift beaches per the Florida Beach & Shore Preservation Act, and conducts periodic dredging, channel maintenance and beach renourishment projects every 4-5 years.  Employing a science-based approach, the District continously monitors the accumulation of sand in the 42-acre depression within the inlet (known as the sand trap) and the navigational channel through its research partnership with Florida Tech and semi-annual bathymetric surveys of the entire inlet system and backwaters.

The Sebastian Inlet District installed and maintains navigational channel markers leading to the inlet from the Intracoastal Waterway (ICW) in the interest of public safety, and also maintains the infrastructure of the inlet to include both the North and South jetties, the T-dock, as well as the shorelines on either side.  

The 6-acre Dredged Material Management Area (DMMA) built and managed by the Sebastian Inlet District is located Northwest of the tide pool as serves as a sand storage site for emergency beach fill and dune repair.  The District routinely works with marine scientists to conduct both permit-required and non-permit required biological monitoring of the critically important habitats surrounding the inlet that support a broad range of different species.  These habitats include the seagrass beds on the Western flood shoal, the nearshore hardbottom reef just South of Sebastian Inlet and area beaches located within the Archie Carr National Wildlife Refuge.

The Sebastian Inlet District works closely with its partners at Sebastian Inlet State Park, the Florida Department of Environmental Protection (FDEP) and other local, state and federal agencies.  Since 2008, the District has secured $12.5 million in cost-share grant funding from the FDEP Beaches and Funding Assistance Program in support of its projects.  For more information on any District project, call (321) 724-5175.

four stakes marking a drain with mounds of sand and bulldozer in background

Channel Maintenance Dredging, Sand Bypass and Beach Renourishment Project Update #3

Phase II of the project is underway; dredging the navigation channel connecting the Sebastian Inlet to the Intracoastal Waterway (ICW) and pumping sand into the Sebastian Inlet District’s Dredged Material Management Area (DMMA) for future beach placement.  The DMMA is a 6-acre sand storage site located Northwest of the Sebastian Inlet State Park Tidal Pool that was built in 2010-2011.  It is used…

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view of Ambersand beach looking North with several beach goers

Channel Maintenance Dredging, Sand Bypass and Beach Renourishment Project Update #2

The beach phase of the project is nearing completion.  To date, an estimated 110,000 cubic yards of sand has been pumped for placement per the beach fill template designed by coastal engineers.  This weekend, final beach tilling and grading will be completed, and an “As Built” Survey to confirm final beach placement volumes is scheduled to begin soon.  In addition, the Ambersand Beach Access that…

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aerial view of dredge boat over sand trap in inlet channel

Crews Mobilize for Sebastian Inlet District Channel Maintenance Dredging, Sand Bypass and Beach Renourishment Project 

Ferreira Construction of Stuart, selected during a competitive bid process, is mobilizing for the Sebastian Inlet District’s scheduled channel maintenance and beach renourishment project that will hydraulically dredge 150,000 cubic yards of sand from the inlet’s sand trap and navigation channel leading to the Intracoastal Waterway per the State’s Beach Management Act.

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two men in skiff boat with small spoil island in background

Biological Monitoring Field Work Shows Resurgence of Threatened Johnson's Seagrass West of Sebastian Inlet  

Marine ecologist Don Deis and his team from Atkins North America were recently out in the field ground-truthing seagrass beds shown in aerial photos taken this summer of flood tidal shoal just west of the Sebastian Inlet.  A full report is expected soon qualifying the different species, coverage of seagrass with comparisons to prior years, and noting the prevalence of prop scars from boaters in…

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