These structures rapidly led to the accumulation of large amounts of sand on the north coast of Griffiths Island and back shore erosion north of the breakwaters. A protective stone wall was added in 1911.
The development of these structures resulted in a buildup of significant amounts of sand on the north coast of Griffiths Island and erosion along the backshore, particularly near the breakwaters. A protective stone wall was implemented in 1911 to mitigate these effects.