Nationwide Permit 54 authorizes the construction and maintenance of living shorelines for bank stabilization in coastal waters, including the Great Lakes. Unlike traditional 'hard' armoring like bulkheads, living shorelines prioritize native materials and natural elements such as vegetation, oyster shells, and sand to provide protection from low-to-mid energy waves while maintaining ecological connectivity between the land and water. The scope of this permit includes the placement of sills, breakwaters, and other structures necessary to protect the living shoreline's biological components. These structures must be designed to allow for the natural movement of water and aquatic organisms. The permit is restricted to areas with small fetch and gentle slopes, ensuring that these nature-based solutions are used in environments where they are most likely to succeed and provide environmental benefits.
The 2026 reissuance of NWP 54 maintains the core standards established in the 2021 version, including the 500-linear-foot limit and the requirement for a mandatory pre-construction notification (PCN). The Corps reevaluated the permit and determined that these existing thresholds effectively ensure that nature-based stabilization projects result in no more than minimal individual and cumulative adverse environmental effects. While the national terms remain unchanged, the supporting decision document was updated with the latest environmental baseline information. This includes data from the 2022 National Lakes Assessment and the 2021 National Wetland Condition Assessment, supporting the Corps' finding that living shorelines generally provide superior ecological outcomes compared to traditional shore armoring methods.
Coastal property owners, homeowners' associations, municipal governments, and conservation organizations use this permit. It is the go-to authorization for projects seeking to stop erosion using 'soft' engineering techniques like marsh plantings and oyster reef structures.
The Corps determined that the reissuance of NWP 54 results in a 'no effect' finding for federally-listed endangered or threatened species and designated critical habitat. This finding is maintained by General Condition 18, which requires project-specific ESA Section 7 consultation if an activity 'might affect' listed resources. Living shorelines often enhance habitat for coastal species, but the PCN process ensures that construction does not interfere with sensitive life stages or habitats like Essential Fish Habitat (EFH). Compliance with Section 106 of the National Historic Preservation Act is ensured through General Condition 20. Because every project under NWP 54 requires a PCN, district engineers are able to review each proposal for potential impacts to historic properties along the coastline. The permit encourages the use of natural materials that are less likely to disrupt the visual or physical integrity of historic coastal landscapes.
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