Miami Air Route Traffic Control Center United States, including parts of Florida, the Atlantic Ocean and the Gulf of Mexico. Miami Center shares boundaries with Houston Air Route Traffic Control Center, Jacksonville Air Route Traffic Control Center, New York Air Route Traffic Control Center, San Juan Combined En-route Radar Approach Control (CERAP), Turks & Caicos, the Bahamas, the Dominican Republic, Haiti, and Cuba Area Control Centers. ZMA overlies or abuts several approach control facilities (including Miami, Palm Beach, Orlando, Fort Myers, and Tampa approaches). Miami Air Route Traffic Control Center Miami Air Route Traffic Control Center or Miami Center, ZMA, is one of 22 Area Control
Miami River (Florida) prevent salt water from traveling inland. The Miami River also became polluted. In 1897, Miami's first sewer line started emptying directly into the river. By the 1950s, 29 sewers were dumping untreated sewage into the river. Dade County constructed a sewage treatment plant on Virginia Key in the 1950s and connected sewer lines to it, routing the raw sewage away from the river. The Miami River is likely the shortest working river in the United States. The Center for Urban & Environmental Solutions reported in 2008: "Waterborne commerce through the Miami River port doubled between an annual level of about