The South Lake Worth Inlet, also known as the Boynton Inlet, is an artificial cut through a barrier beach connecting the south end of the Lake Worth Lagoon in Palm Beach County, Florida with the Atlantic Ocean.
By 1913 residents of the area were discussing opening another inlet from the south end of the lagoon to help flush polluted waters into the ocean.
The transfer plant pumped an average 50,000 cubic yards (38,000 m3) of sand past the inlet in the next five years.
The transfer plant was shut down during World War II due to fuel shortages, and sand again accumulated in the inlet and the lagoon.
Following World War II, sand transfer was resumed, and dredging of the accumulated shoals in the inlet and the lagoon began.