Word: riprap
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Dates: during 1980-1989
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...variant on the seawall that can also hasten erosion is riprap -- rocks and boulders piled into makeshift barriers to absorb the force of incoming waves. While seawalls and riprap run parallel to the beach, groin fields extend directly out into the water. Made up of short piers of stone extending from the beach and spaced 100 yds. or so apart, they can slow erosion by trapping sand carried by crosscurrents. But down current, the lack of drifting sand can result in worse erosion. "It's like robbing Peter to pay Paul," says Leatherman -- a concept the O'Malleys of Westhampton...
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