We thank the officers and crew of the National Oceanic and Atmospheric Administration (NOAA) Ship Whiting who provided shipboard support and without whose concentrated team effort none of these products would have been possible. We also thank Robert Taylor of TG&B Marine and Lynda Short and Lisa Lefkovitz of Battelle Applied Coastal and Environmental Sciences for providing access to logs of cores collected as part of the U.S. Army Corps of Engineers Great Harbor dredging project, and Adrian Green who performed the CHN analyses. This report has benefited from critical reviews by Matthew Arsenault, James Robb, and VeeAnn Cross, all of the USGS.