Shoreline Stabilization in Florida: Seawalls, Revetments and Living Shorelines

The Green-to-Gray Spectrum

NOAA and the U.S. Army Corps of Engineers describe shoreline stabilization as a continuum, from green techniques built mostly from plants and natural materials to gray structures such as seawalls, with hybrids in between. Their joint guidance names the site conditions that drive the choice: wave energy, fetch (the open-water distance the wind blows across), the slope of the shore and the tidal range. It also notes that boat wakes can generate waves.

That guidance describes low wave energy as limited fetch in a sheltered, shallow or small water body such as an estuary, river or bay, with waves under about 2 feet; medium as roughly 2 to 5 feet; and high as large fetch and deep water on the open coast. Many Florida canals, rivers and protected bays fall toward the low to medium end, though storms, wakes and exposure to long open reaches can change that for a given lot.

NOAA Fisheries describes estuaries, bays, rivers and other sheltered shorelines as good candidates for living shorelines and notes they are typically not found on open-ocean beaches. It also notes that larger and more complex projects may require engineered plans and federal permitting.

When a Vertical Wall Still Makes Sense

Seawalls and bulkheads remain the practical answer on many Florida properties. Manmade canals that are already walled, lots with deep water at the edge for boat access, narrow lots with no room for a slope, and exposed shorelines often leave little alternative. Florida law recognizes some of these situations explicitly, as described in the permitting section below.

• Docking. A vertical face keeps water depth right at the edge for boats and lifts, while a sloped revetment pushes usable water farther out.
• Space. Sloped and vegetated shorelines need horizontal room, and the NOAA and USACE guidance lists the need for more land area as a drawback of sills and revetments.
• Neighbors. Changing approach partway along a walled canal can create flanking erosion at the transitions.
• Failing walls. When a wall reaches the end of its life, replacement in place, refacing with riprap, or removal and grading back to a slope may all be worth comparing, and state policy can favor some of them.

For wall projects, see seawall construction and seawall replacement, and compare materials in types of seawalls.

Living Shorelines and Hybrids in Florida

Florida's estuaries, rivers and lagoons include many shorelines where softer approaches can work. A living shoreline uses native plants, sand, shell or rock to stabilize the edge. A hybrid pairs those elements with structure: a rock sill in front of a marsh fringe, an oyster-bag breakwater, or riprap toe protection with plantings in front of an existing wall. NOAA notes that living shorelines can become more stable over time as plants and roots grow, and that maintenance includes replanting, debris removal and keeping materials in place.

Plant choices depend on salinity and elevation. The NOAA and USACE guidance notes that native plants and materials must be appropriate for current salinity and site conditions, so a freshwater or brackish stretch of the St. Johns River calls for different plants than a salt marsh edge along the Intracoastal Waterway.

Even where a wall must stay, the Corps' 2026 Nationwide Permit for bank stabilization describes nature-based features that can be added to seawalls, bulkheads and revetments, including textured surfaces, crevices and shelves that support marine growth, rock clusters next to a wall, and small reef structures for oysters and other shellfish. Whether any of these suits a particular site is a design question.

Florida Policy and Permits

Florida law does more than allow softer shorelines; in some waters it prefers them. These are summaries of statute and rule text, and the agencies decide how they apply to a given project.

• Estuaries and lagoons. Section 373.414(5), F.S., states legislative intent to protect estuaries and lagoons from the damage created by vertical seawalls and to encourage “environmentally desirable shore protection systems, such as riprap and gently sloping shorelines which are planted with suitable aquatic and wetland vegetation.” Permits for new vertical seawalls are limited to listed situations, including an existing manmade canal already occupied in whole or part by vertical seawalls. When reviewing a permit application to repair or replace an existing vertical seawall, the agency is to generally require it to be faced with riprap or replaced with riprap unless a listed situation applies. The subsection also states that it does not hinder activities previously exempt or permitted.
• Small living shorelines. Rule 62-330.051(12)(e), F.A.C., exempts native wetland plantings on 500 linear feet of shoreline or less that extend no more than 10 feet waterward of the mean or ordinary high water line, with conditions. A low breakwater can be included where needed to protect the plantings, with limits on its height and reach, a required opening of at least 5 feet every 75 feet, and a 3-foot buffer from seagrass and existing marsh.
• Verifying the exemption. A UF/IFAS and Florida Sea Grant guide walks homeowners through requesting DEP verification of the living shoreline exemption and explains that an approved request results in a verification letter that includes state submerged lands authorization.
• Federal review. The Corps' 2026 Nationwide Permit 54 covers living shorelines and requires a pre-construction notification before a living shoreline is built. Nationwide Permit 13 covers bank stabilization, including sills, riprap, revetments and bulkheads, with length and fill limits.
• Rules in motion. Florida's 2026 coastal resiliency law (CS/CS/SB 302, Chapter 2026-1, Laws of Florida, effective July 1, 2026) requires DEP to initiate rulemaking by January 1, 2027 to establish a statewide permitting process for nature-based coastal resiliency methods and to develop design guidelines for green and hybrid green-gray infrastructure. Check DEP's current guidance before you plan.

A Florida Sea Grant fact sheet hosted by DEP lists the documents an exemption request typically needs: cross-section and plan-view drawings, written descriptions of the current site and the planned work, and a site map. For the full agency picture, see Florida seawall permits.

How a Stabilization Approach Is Chosen

If you are still sorting out the terms, bulkhead vs. seawall explains how Floridians use them, and the project planner helps you organize goals and site details before an assessment.

Shoreline Stabilization in Northeast Florida and Beyond

Barefoot Marine Construction, the owner and operator of Florida Bulk Head, performs shoreline stabilization work directly in Duval, St. Johns, Nassau, Clay, Flagler and Putnam counties. The approach for each site is worked out during the assessment, and whether specialty elements such as riprap, marsh plantings or oyster habitat are performed in-house is confirmed during your estimate. Engineered designs are prepared by a Florida-licensed professional engineer where they are required. See Northeast Florida service.

Outside those six counties, Florida Bulk Head is building a network of independent contractors. No partners are confirmed yet; requests are accepted, and matching is subject to contractor availability. See how partner referrals work.