Protecting a rapidly eroding barrier island using only natural and nature-based solutions

At a Glance

  • 35+

    Acres of Marsh

  • 90K

    Cubic Yards of Sand

Location
Accomack County, Virginia
Offices
Partners
  • Randolph Macon College
  • George Mason University
  • VIMS
Grants
National Coastal Resilience Grant through the National Fish and Wildlife Foundation
Competitive State Wildlife Grant (C-SWG) through the Fish and Wildlife Service

Cedar Island Marsh Creation

Cedar Island is one of the most low-lying, dynamic, and rapidly eroding islands along the Virginia barrier-island chain. The Virginia Institute of Marine Science (VIMS) wanted to enhance the resiliency of Cedar Island, a protected habitat, as well as the Town of Wachapreague located nearby, which would benefit from the barrier island’s protection.

VIMS is leading our collaborative team—a group of Stantec personnel alongside specialists from multiple universities—to develop recommendations for a marsh creation and enhancement along the bay side of the island. The goal is to provide a platform that would enable the island to stabilize and grow laterally and vertically, while it continues to undergo natural barrier island migration.

The final plans and specifications propose over 35 acres (14 hectares) of high and low marsh, which would be planted with native, desirable marsh grasses. This will lead to a complete, contiguous back barrier marsh habitat for southern Cedar Island that allows for natural barrier island rollover and enhanced resilience against storm events and continued sea level rise. The marsh will also create habitat for saltmarsh sparrow, a candidate species for federal listing under the Endangered Species Act.

We also conducted hydrodynamic modeling of the proposed marsh to understand its expected performance under different scenarios and refine our design. Our project partners used the results of the modeling and design to solidify support and secure funding for project implementation.

The project is currently in the final stages of securing regulatory approvals from local, state, and federal agencies.

At a Glance

  • 35+

    Acres of Marsh

  • 90K

    Cubic Yards of Sand

Location
Accomack County, Virginia
Offices
Partners
  • Randolph Macon College
  • George Mason University
  • VIMS
Grants
National Coastal Resilience Grant through the National Fish and Wildlife Foundation
Competitive State Wildlife Grant (C-SWG) through the Fish and Wildlife Service