Coastal and Marine Hazards
USGS scientists and technical staff study coastal and ocean hazards and related geologic processes within watersheds, shorelines, and estuaries, and extending offshore to the continental shelf and deep sea. They provide expertise, tools, products, and data to reduce risk from natural hazards and inform a broad array of resource challenges facing our Nation. USGS uses remote-sensing technologies—such as aerial photography, satellite imagery, structure-from-motion (SfM) photogrammetry, and lidar (laser-based surveying)—to measure coastal change along U.S. shorelines.