Sea Erosion
Sir,—This morning’s “Dominion” says that erosion near Hokitika is giving concern. Erosion at Raumati beach near Paraparaumu also causes anxiety. The popular method to protect the shore in New Zealand is to place a concrete wall or other' obstruction parallel with the beach. The method carried out with success by engineers in parts of England, and probably elsewhere, is exactly the opposite. Concrete walls, several feet in height, based above High water mark, stepped down with the slope of the beach and running at right angles to the beach, are placed about 25 yards.apart. It is usually a sideways swirling which swiftly erodes, and these concrete, walls prevent tbis and quickly become buried in silt. — I am, etc., NAUTILUS. Otaki, January 21.
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Dominion, Volume 36, Issue 101, 23 January 1943, Page 4
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124Sea Erosion Dominion, Volume 36, Issue 101, 23 January 1943, Page 4
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