Coast Survey maintains over a thousand charts and publications covering 95,000 miles of shoreline and 3.4 million square nautical miles of water. Measuring depths and determining new dangers to navigation along U.S. coasts and the Great Lakes is a monumental job because the seafloor is constantly changing due to factors such as storms, erosion, and development. One of Coast Survey's biggest tasks during the winter months is to plan hydrographic survey projects for the coming field season. View 2017 planned survey projects.

Continue reading →

...