Tuesday, October 26, 2010

Height Modernization Benchmarks Published for Poplar Island

The National Geodetic Survey (NGS), in collaboration with the U.S. Army Corps of Engineers, NOAA's Office of Coast Survey, and NOAA's Center for Operational Oceanographic Products and Services, recently published high-accuracy positions for project bench marks at the Poplar Island restoration project in the Chesapeake Bay. These benchmarks serve as the fundamental control for grading dredge material from the Baltimore shipping channel to recreate marsh habitat, restoring the historical footprint of the island that had eroded away. The new high-accuracy positions were obtained through utilization of NGS' Height Modernization procedures in which a number of Global Navigation Satellite System receivers are deployed simultaneously over a broad geographic area. For more information, contact Jeff Olsen.