Water Filtration System for Home in Seabrook Island, SC

KIAWAH ISLAND — A property owner’s association wants to relocate an environmentally sensitive inlet between Kiawah and Seabrook islands, an area two conservation groups say is a “Holy Grail” habitat for local endangered species.

The Seabrook Island Property Owners Association is asking state and federal regulators for permission to relocate Captain Sams Inlet (which forms Captain Sams Spit) to a position it previously occupied.

The work would require the excavation of 10 acres of sand and the filling of 10 acres of water, according to a public notice for the project.

The peninsular spit is attached to the southern end of Kiawah. The plan calls for excavating a channel through Sams Spit, thus forming a new mouth for the Kiawah River. The current inlet then would be closed off with a berm of excavated sand, according to documents submitted to the U.S. Army Corps of Engineers.

The operation could result in the excavating and relocation of close to 300,000 cubic yards of sand.

The goal, according to the Property Owners Association, is to stabilize and maintain the inlet within a set area, and mitigate erosion on the northern end of Seabrook, along which the inlet runs.

“This strategy allows Capt. Sams Inlet and its associated bars and shoals to freely migrate along thousands of feet of ocean-facing shoreline while maintaining space for developed uplands as well as particular habitats,” according to a Property Owners Association flyer for the project. “Using this approach, both Kiawah and Seabrook islands have managed relatively healthy beach ecosystems for decades without needing a large-scale dredge-based project.

Captain Sams Spit erodes and accretes mass, and it’s a “highly mobile piece of land,” according to the Coastal Conservation League.

Similar relocation projects have been undertaken in 1983, 1996 and 2015, according to the Army Corps application. Between the 2015 relocation and 2020, the inlet shifted naturally southwest (towards Seabrook) at a speed of about 100 feet per year. Migration has since sped up, and the inlet’s now moving southwest at about 200 feet annually.

The zone of land created by the relocation of the inlet is protected from development and set aside as habitat for local species, according to Army Corps documents for the new project. It’s also kept empty to account for the river mouth’s natural migration.

Some aren’t buying the group’s conservation claims.

In a public comment submitted in opposition to the project, the Conservation League and South Carolina Environmental Law Project wrote that the beaches and dunes on the northern end of Seabrook are in fine shape, and no structures there are at risk of erosion. They also question why it’s necessary to keep the inlet within a defined area.

They allege the project is an attempt to “stockpile sand to, at some point in the future, replenish the southern parts of (Seabrook) island where structures are experiencing more severe erosion.”

“ The sand tip of the spit that would be cut off would migrate and attach onto the north end of Seabrook,” said Amy Armstrong, the Law Project’s executive director. The longshore current that runs along South Carolina’s coast would then carry the sand southward to Seabrook’s eroding southern tip, Armstrong said.

“It’s free sand for Seabrook,” she said. “ It's very expensive to do a renourishment project where you have to go three miles offshore, identify beach-compatible sand, and then pump it on shore.”

Steve Hirsch, the director of engineering for the Property Owners Association, disputed that claim.

“Any temporarily stockpiled sand during construction will remain within the Captain Sams Inlet system and is not intended for use at other parts of Seabrook Island,” he wrote. Although the Property Owners Association’s flyer does list a “continuous supply of beach sand from Kiawah towards Seabrook” as one of the project’s benefits.

Across coastal South Carolina, communities spend millions of dollars a year to keep their shores sandy — both to support the state’s lucrative tourism industry and protect seaside structures from erosion. From 1979 to 2023, the Department of Environmental Services estimates that the state’s coastal communities spent more than $400 million on beach renourishment, The Post and Courier previously reported.

As sea levels rise and warming waters power a new generation of stronger hurricanes, the cost to keep the Palmetto State’s beaches pristine is rising. The National Oceanic and Atmospheric Administration predicts that water levels in the region will rise roughly a foot by 2050, increasing the reach of the state’s highest tides.

In their letter, the two conservation groups wrote that the shores of the inlet are “the holy grail of habitat for important threatened and endangered species.” In its review of the project, the Army Corps identified 18 species that could be found in the project area that are considered either “threatened” or “endangered,” or have been proposed for inclusion on the federal Endangered Species list.

Hirsch wrote that each previous relocation, and the proposed new one, has included “significant pre- and post-construction habitat and endangered species monitoring which has confirmed increased habit availability for endangered species and more publicly accessible beach.”

The project still needs approval from both the state Department of Environmental Services and the Army Corps.

It’s the latest entry in a complex years-long saga over the unassuming, yet controversial, corridor.

In a separate case, the Town of Kiawah Island, Kiawah Island Community Association and Kiawah Conservancy are suing a private developer to regain ownership of parts of Captain Sams Spit and put other areas under conservation easement.

From 2008 to 2022, Kiawah Partners sought permits to build 50 luxury homes on the property, in addition to infrastructure to protect the area from flooding and erosion, The Post and Courier previously reported. Those plans have been blocked by years of legal wrangling in the state’s courts — including five different rulings by the S.C. Supreme Court.

In a joint statement, the Town of Kiawah Island, Kiawah Island Community Association and Kiawah Conservancy declined to comment on the excavation proposal by their southern neighbors, citing the ongoing litigation.