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Federal
Administrative Boundaries Centroids of National Park System Units NGDA recent views
Department of the Interior —
National Park Service unit points. -
Federal
Hydrographic and Impairment Statistics Database: SAIR recent views
Department of the Interior —
Hydrographic and Impairment Statistics (HIS) is a National Park Service (NPS) Water Resources Division (WRD) project established to track certain goals created in... -
Federal
Mercury Bioaccumulation in US National Parks Using Dragonfly Larvae as Biosentinels, 2009-2018 recent views
Department of the Interior —
Comma-separated values (.csv) files containing data related to a National-scale assessment of mercury bioaccumulation in the US National Parks using dragonfly larvae... -
Federal
Digital Surficial Geologic-GIS Map of Saugus Iron Works National Historic Site, Massachusetts (NPS, GRD, GRI, SAIR, SAIR_surficial digital map) adapted from a U.S. Geological Survey Scientific Investigations Map by Stone, Stone, DiGiacomo-Cohen, and Mabee (2019) recent views
Department of the Interior —
The Digital Surficial Geologic-GIS Map of Saugus Iron Works National Historic Site, Massachusetts is composed of GIS data layers and GIS tables, and is available in... -
Federal
Digital Bedrock Geologic-GIS Map of Saugus Iron Works National Historic Site, Massachusetts (NPS, GRD, GRI, SAIR, SAIR_bedrock digital map) adapted from a Massachusetts Geological Survey Preliminary Report map by Kopera (2011) and a U.S. Geological Survey Miscellaneous Field Studies Map by Kaye (1980) recent views
Department of the Interior —
The Digital Bedrock Geologic-GIS Map of Saugus Iron Works National Historic Site, Massachusetts is composed of GIS data layers and GIS tables, and is available in the...