For homeowners

Types of seawall: which one fits your shoreline?

Choose Seawall (vertical or sloped wall) for areas highly vulnerable to storm surge and wave forces; Bulkhead (vertical retaining wall) for high energy settings and working waterfronts, such as docking for ships and ferries; Revetment (stone or concrete laid over the slope) for sites with pre-existing hardened shoreline structures; Living shoreline with a sill (stone or oyster reef) for areas other than high wave energy environments; Plants-only living shoreline for low wave energy environments.

The right choice depends on how much wave energy reaches the shoreline, whether the site already has hardened shoreline structures, how much land there is for a sloped or planted edge, and whether you need protection from storm surge flooding.

How we know: By InstaBids editorial team with AI research agents. · Sources read: 22 October 2026 · Updated 27 October 2026

Site conditions decide the technique. NOAA and the U.S. Army Corps of Engineers (USACE), in their 2015 shoreline stabilization brochure: "Site-specific conditions will influence your choice of shoreline protection technique (ex: wave energy level, fetch lengths, rate and pattern of erosion, etc)."
Type	Best for	Main advantages	Main drawbacks
Seawall (vertical or sloped wall)	areas highly vulnerable to storm surge and wave forces	NOAA and USACE: prevents storm surge flooding; NOAA and USACE: resists strong wave forces	NOAA and USACE: disrupts sediment transport, leading to beach erosion; NOAA and USACE: loss of the intertidal zone; NOAA and USACE: may be damaged by oceanfront storm waves that overtop it; NOAA Fisheries: hardened shorelines such as seawalls tend to degrade over time from wear and tear by waves and storms
Bulkhead (vertical retaining wall)	high energy settings and working waterfronts, such as docking for ships and ferries	NOAA and USACE: moderates wave action; NOAA and USACE: manages tide level fluctuation; NOAA and USACE: simple repair	NOAA and USACE: no major flood protection; NOAA and USACE: induces wave reflection; NOAA and USACE: erosion of adjacent unreinforced sites; NOAA Fisheries: hardened shorelines such as bulkheads generally offer minimal to no ecological benefits
Revetment (stone or concrete laid over the slope)	sites with pre-existing hardened shoreline structures	NOAA and USACE: mitigates wave action; NOAA and USACE: little maintenance	NOAA and USACE: loss of intertidal habitat; NOAA and USACE: requires more land area; NOAA and USACE: no high water protection
Living shoreline with a sill (stone or oyster reef)	areas other than high wave energy environments	NOAA and USACE: toe protection helps prevent wetland edge loss; NOAA and USACE: provides habitat and ecosystem services; NOAA Fisheries: living shorelines can become more stable over time as plants and root systems grow and establish	NOAA and USACE: requires more land area; NOAA and USACE: uncertain vegetation growth and competition with invasive species
Plants-only living shoreline	low wave energy environments	NOAA and USACE: minimal impact to the natural community and ecosystem processes; NOAA and USACE: flood water storage	NOAA and USACE: no storm surge reduction ability; NOAA and USACE: appropriate in limited situations

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If your priority is...
Priority	Choose
a shoreline highly exposed to storm surge and wave forces	Seawall (vertical or sloped wall)
a working waterfront with docking in a high energy setting	Bulkhead (vertical retaining wall)
a site that already has hardened shoreline structures	Revetment (stone or concrete laid over the slope)
a living shoreline outside high wave energy areas	Living shoreline with a sill (stone or oyster reef)
a sheltered shoreline with low wave energy	Plants-only living shoreline

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Sources for the facts on this page

NOAA Office for Coastal Management and U.S. Army Corps of Engineers (SAGE), Natural and Structural Measures for Shoreline Stabilization (February 2015), government, read 22 October 2026.
NOAA Fisheries, Understanding Living Shorelines, government, read 22 October 2026.