what body of water is san juan puerto rico on
San Juan Bay San Juan Bay (Spanish: Bahía de San Juan) is the inlet adjacent to Old San Juan in northeastern Puerto Rico. It is the largest body of water in an estuary of about 150 square miles (390 km2) of channels, inlets and eight interconnected lagoons. Puerto Rico's deepest bay contains the island's busiest harbor, and since 1508 it has been historically significant.[1][2]