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Protected Areas Database of the United States (PAD-US)

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: January 27, 2026 | Last Modified: 2022-09-01T00:00:00Z
This is series-level metadata for the USGS Protected Areas Database of the United States (PAD-US) data released by the United States Geological Survey (USGS). PAD-US is the nation's inventory of protected areas, including public land and voluntarily provided private protected areas. Starting with version 1.4 PAD-US was identified as an A-16 National Geospatial Data Asset in the Cadastre Theme ( https://ngda-cadastre-geoplatform.hub.arcgis.com/ ). The PAD-US is an ongoing project with several published versions of a spatial database including areas dedicated to the preservation of biological diversity, and other natural (including extraction), recreational, or cultural uses, managed for these purposes through legal or other effective means. The database was originally designed to support biodiversity assessments; however, its scope expanded in recent years to include all open space public and nonprofit lands and waters. Most are public lands owned in fee (the owner of the property has full and irrevocable ownership of the land); however, permanent and long-term easements, leases, agreements, Congressional (e.g. 'Wilderness Area'), Executive (e.g. 'National Monument'), and administrative designations (e.g. 'Area of Critical Environmental Concern') documented in agency management plans are also included. The PAD-US strives to be a complete inventory of U.S. public land and other protected areas, compiling "best available" data provided by managing agencies and organizations. The PAD-US geodatabase maps and describes areas using thirty-six attributes and five separate feature classes representing the U.S. protected areas network: Fee (ownership parcels), Designation, Easement, Marine, Proclamation and Other Planning Boundaries. An additional Combined feature class includes the full PAD-US inventory to support data management, queries, web mapping services, and analyses. The Feature Class (FeatClass) field in the Combined layer allows users to extract data types as needed. A Federal Data Reference file geodatabase lookup table facilitates the extraction of authoritative federal data provided or recommended by managing agencies from the Combined PAD-US inventory. For more information regarding the PAD-US dataset please visit, https://www.usgs.gov/programs/gap-analysis-project/science/protected-areas/. For more information about data aggregation please review the PAD-US Data Manual available at https://www.usgs.gov/programs/gap-analysis-project/pad-us-data-manual . A version history of PAD-US updates is summarized below (See https://www.usgs.gov/programs/gap-analysis-project/pad-us-data-history for more information): - Current Version - January 2022 (Version 3.0) https://doi.org/10.5066/P9Q9LQ4B - Revised - September 2020 (Version 2.1) https://doi.org/10.5066/P92QM3NT - Revised - September 2018 (Version 2.0) https://doi.org/10.5066/P955KPLE - Revised - May 2016 (Version 1.4) https://doi.org/10.5066/F7G73BSZ - Revised - November 2012 (Version 1.3) https://doi.org/10.5066/F79Z92XD - Revised - April 2011 (Version 1.2 - available from the PAD-US: Team pad-us@usgs.gov) - Revised - May 2010 (Version 1.1 - available from the PAD-US: Team pad-us@usgs.gov) - First posted - April 2009 (Version 1.0 - available from the PAD-US: Team pad-us@usgs.gov) Comparing protected area trends between PAD-US versions is not recommended without consultation with USGS as many changes reflect improvements to agency and organization GIS systems, or conservation and recreation measure classification, rather than actual changes in protected area acquisition on the ground.

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2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 Agricultural Research Service Alabama (AL) Alaska (AK) American Samoa (AS) Arizona (AZ) Arkansas (AR) Army Corps of Engineers Biodiversity Bureau of Land Management Bureau of Reclamation Cadastre Theme California (CA) Colorado (CO) Connecticut (CT) Conservation Delaware (DE) Department of Defense Department of Energy Federal Lands Florida (FL) Forest Service GAP Status Code Gap Analysis Geography Georgia (GA) Governmental Units Guam (GU) Hawaii (HI) IUCN Category Idaho (ID) Illinois (IL) Indiana (IN) Iowa (IA) Kansas (KS) Kentucky (KY) Land Manager Land Ownership Land Stewardship Land Use Change Land Use and Land Cover Local Government Lands Louisiana (LA) Maine (ME) Mariana Islands (MP) Maryland (MD) Massachusetts (MA) Michigan (MI) Minnesota (MN) Mississippi (MS) Missouri (MO) Montana (MT) NGDA NGDAID27 National Geospatial Data Asset National Oceanic and Atmospheric Administration National Park Service Natural Resources Conservation Service Nebraska (NE) Nevada (NV) New Hampshire (NH) New Jersey (NJ) New Mexico (NM) New York (NY) North Carolina (NC) North Dakota (ND) Ohio (OH) Oklahoma (OK) Oregon (OR) Outdoor Recreation Parks Pennsylvania (PA) Private Lands Protected Area Protection Status Public Health Public Lands Public Open Space Puerto Rico (PR) Rhode Island (RI) South Carolina (SC) South Dakota (SD) State Lands Tennessee (TN) Tennessee Valley Authority Texas (TX) U.S. Fish and Wildlife Service U.S. Minor Outlying Islands (UM) USGS:8cef209b-b188-4b1a-8b53-eead67d02da5 United States United States Virgin Islands (VI) Utah (UT) Vermont (VT) Virginia (VA) Washington (WA) West Virginia (WV) Wisconsin (WI) Wyoming (WY)

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