Portsmouth Naval Yard Sediment Data (JOHNSTON94 shapefile)

Online link https://cmgds.marine.usgs.gov/catalog/whcmsc/open_file_report/ofr2003-001/johnston94.shp.faq.html
Description The sediment data presented in this data layer were from an ecological study sited near the Portsmouth Naval Shipyard, Kittery, Maine. The analog data were originally converted into digital form for inclusion in a Gulf of Maine Contaminated Sediments Database.
Originators Ward, Larry G.; Poppe, Lawrence J.; Paskevich, Valerie F.; Williams, S. Jeffress; Hastings, Mary E.; Kelley, John T.; Belknap, D. F.; Fitzgerald, D. M.; and Larsen, Peter F.

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Thumbnail image showing extent and distribution of data layer coverage.
Thumbnail image showing extent and distribution of data layer coverage.