DACF Home → Bureaus & Programs → Maine Geological Survey → Geologic Hazards → Erosion → Frequently Asked Questions → Groins

Groins are meant to inhibit the alongshore movement of sand and "catch" sand. This usually results in a wider, accretive beach on the updrift side of the groin, but a receding, erosive beach on the down-drift side of the groin.
Last updated on October 6, 2005