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N.C. Department of Environment and Natural Resources

NC Department of Environment and Natural Resources
Coastal Management - End_Groin

Coastal Management

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Estuarine Shoreline Stabilization

Stabilization Method Selection Key

Groin

A groin is a straight structure that is perpendicular to the shore, constructed with stone, sheet pile or similar material to stabilize a stretch of beach against erosion. Groins function only when sand is moving in the nearshore area. Groins create or build out a sandy beach that then acts as a wave dissipation zone. Groins can be constructed either singly or in a series (as shown). A saw-toothed shaped shoreline is created with a series of groins.
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