Lidar-Derived Waterway Data Reveals Runoff Threats

Outdated, inaccurate maps made it difficult for people in American Samoa to locate waterway runoff and sediment areas that can imperil coastal and coral reef health. A project to extract information from Digital Coast lidar has given this U.S. territory much-needed data with high-resolution waterway (hydrographic) information and maps. Coastal researchers and managers use the data to identify runoff-plagued streams and lakes that could threaten marine life. The data set also includes the official NOAA coastline for American Samoa, which is key to creating other mapping uses. (2016)

More Information: viewer.nationalmap.gov/launch

Partners: American Samoa Department of Commerce, NOAA Office for Coastal Management, U.S. Geological Survey

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