The upper Chagres River, its watershed, and the watershed of several tributaries lie within the Chagres National Park, created in 1985 to preserve the flow of water into the canal.
National Football League | National Register of Historic Places | National Hockey League | England national football team | National Basketball Association | National Science Foundation | National Geographic | National Trust | National Endowment for the Arts | National Geographic Society | Argentina national football team | National Trust for Places of Historic Interest or Natural Beauty | National Park Service | National League | Australian National University | National Guard | National Geographic Channel | National Institutes of Health | National Guard of the United States | National Collegiate Athletic Association | Hyde Park | Central Park | United States National Research Council | National Portrait Gallery | National Academy of Sciences | Indian National Congress | South Park | United States men's national soccer team | National Research Council | Royal National Theatre |