Beach Renourishment from Sebastian Inlet to Wabasso

Two agencies split the job: the Sebastian Inlet District places sand dredged from its inlet sand trap on Sectors 1 and 2, and Indian River County manages Sector 3 to the south.

Indian River County divides its 22.4 miles of Atlantic coast into eight beach management sectors. Sectors 1 and 2 cover 3.1 miles from Sebastian Inlet to the Seaview Subdivision, and a memorandum of understanding lets the Sebastian Inlet District manage that beach and bypass sand onto it. Sector 3 picks up there and runs 6.6 miles, from half a mile north of Treasure Shores Beach Park to half a mile south of the Turtle Trail Beach Access.

Questions about a project on the inlet beaches go to the Sebastian Inlet District at (321) 724-5175 (Sebastian Inlet District); Sector 3 questions go to Indian River County, main number (772) 567-8000 (Indian River County beach program).

Sebastian Inlet's jetties trap sand that would otherwise drift south along the Atlantic shore, so the Indian River County beaches downdrift of the inlet run short and have to be refilled.

The inlet itself is a human cut. The Sebastian Inlet District notes that Sebastian Inlet is manmade rather than a natural feature of the coast and that storms filled the original cut several times by 1905. To keep the channel open, the jetties interrupt the natural north to south sand drift, and the state-adopted Sebastian Inlet Management Plan, set by the Florida Department of Environmental Protection in 2000 and updated in 2023, aims to mimic that drift by bypassing an annual average of 75,000 cubic yards of sand to the south beaches.

The shortfall shows up in state erosion maps. As of 2025 FDEP classified 19.3 of the 22.4 miles of Indian River County shoreline as critically eroded (Indian River County). The northernmost segment, 9.5 miles from R-1 to R-51.3, starts south of Sebastian Inlet, and the county lists State Road A1A, Sebastian Inlet State Park facilities, the McLarty Treasure Museum and homes along Ambersand Beach, Sanderling, Summer Place and Wabasso Beach as threatened. The county uses 119 FDEP range monuments, spaced about every 1,000 feet, as reference points to define its sectors, and projects are described the same way: the District's 2019 placement ran from R-10 to R-17.

The Sebastian Inlet District dredges a 42-acre sand trap west of the inlet bridge every 4 to 5 years and places the sand on the three miles of beach just south of Sebastian Inlet.

According to the Sebastian Inlet District FAQ, the trap is dredged when it fills to roughly 150,000 to 200,000 cubic yards, and the renourishment interval for Sectors 1 and 2 is every 4 to 5 years. Sand fresh from the submerged Sebastian Inlet trap looks darker than normal until it dries and is bleached by the sun.

The record of placements shows the scale. In 2019 the District placed about 113,000 cubic yards on a mile and a half of beach from the McLarty Treasure Museum south past the Ambersand beach access, between monuments R-10 and R-17, and reported more than 2.5 million cubic yards placed over its history (Sebastian Inlet District). The latest cycle ran in two pieces: in April 2025 the contractor ATL placed about 43 percent of the planned volume, roughly 135,000 cubic yards, returned in October 2025, and the District completed the Sand Trap Dredging and Beach Placement Project in April 2026 with about 271,000 cubic yards placed on the south beach (Sebastian Inlet District projects).

A reserve sits behind the dunes. The District keeps a 6-acre Dredged Material Management Area northwest of the Tidal Pool inside Sebastian Inlet State Park (Sebastian Inlet District), and its projects page puts the stockpile there at more than 50,000 cubic yards for emergency beach fill and dune repair after hurricanes.

Indian River County's Beach Preservation Plan recommends continuing beach renourishment on Sector 3, the 6.6 miles between Treasure Shores and Turtle Trail, on a suggested cycle of every 5 to 7 years.

The county beach management sectors page places Sector 3 from half a mile north of Treasure Shores Beach Park, near the Seaview Subdivision, to half a mile south of the Turtle Trail Beach Access. South of it, Sector 4 runs 3.2 miles to just north of Tracking Station Beach Park, and there the plan recommends seeking FDEP critically eroded status and building a dune only project rather than a full renourishment. The plan's sector boundaries reflect coastal conditions, jurisdictional lines, past nourishment, historic shoreline and sand volume changes, upland development and environmental resources.

Wabasso Beach falls inside the 9.5-mile critically eroded segment from R-1 to R-51.3 that starts south of Sebastian Inlet. Sector 3 is in the county's renourishment program, unlike Sectors 6 and 8, where the coastline is growing and the plan suggests only semi-annual beach profile surveys (Indian River County). The Board of County Commissioners adopted the Beach Preservation Plan 2026 Update on October 6, 2026, and the county posts the plan and its appendices on its Beach Preservation Plan page.

Inlet-side projects are paid by the Sebastian Inlet District's property tax plus state grants, while Sector 3 near Wabasso is an Indian River County project that needs a signed beach easement from every oceanfront owner in the project area.

The Sebastian Inlet District reports $12.5 million in cost-share grants from the FDEP Beaches Funding Assistance Program since 2008. For the 2019 project, estimated at $2,945,000, the District's FAQ said 75 percent would be state money if awarded and 25 percent District money. That same FAQ gives the District millage as 0.0877 and its yearly revenue as about $2 million, figures from the 2019 project that are now out of date: the Florida Department of Revenue 2025 Indian River tax area table lists the Sebastian Inlet levy at 0.1555 mills on City of Sebastian parcels for tax year 2025.

On Sector 3, the county relies on owners as well as public money. Oceanfront owners have a part too: the county beach program requests a beach easement from each owner before placing publicly funded sand on private property, and every owner within a project area must sign one to receive sand.

On published cycles, the inlet beaches would next be due around 2030 to 2031 after the April 2026 placement, and Sector 3 near Wabasso follows a suggested 5 to 7 year cycle in the county plan.

Those dates are arithmetic from the stated intervals, not scheduled projects: 4 to 5 years for Sectors 1 and 2 (Sebastian Inlet District) and a suggested 5 to 7 years for Sector 3 (Indian River County). Storm damage can pull either forward. The plan behind the county cycle is current: Indian River County adopted its Beach Preservation Plan in 1988, updated it in 1998, 2008, 2015 and 2019 (Indian River County), and the Board of County Commissioners adopted the 2026 update on October 6, 2026 (Indian River County).

Beach work near Sebastian Inlet is timed around sea turtles. The District says area beaches have the highest sea turtle nesting density in the Western Hemisphere (Sebastian Inlet District), and the county lists sea turtle and shore bird nesting habitat among the factors weighed for any shoreline protection method (Indian River County). Other work is also under way at the inlet: the Florida Department of Transportation began mobilizing for the Sebastian Bridge replacement on June 1, 2026 (Sebastian Inlet District projects), so traffic and parking around Sebastian Inlet State Park can be affected while sand projects run nearby.

Last verified: October 14, 2026, on the Indian River County and Sebastian Inlet District websites.