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

Data Stewards

PAD-US contains data developed by many stewards, including federal agencies, state-focused agencies and organizations, and national nongovernmental organizations. Using the map below, click on any state for a more detailed view of that state’s data and to access a fact sheet.  Note that the ranking of  “complete” means between 95 and 100 percent complete.


14 federal agencies contribute land, water, and boundary information to PAD-US.  Individual federal agency completeness estimates below balance acres inventoried and quality of data/attributes in each inventory, including fee parcels, easement interests and major designations:

National Park Service Natural Resources Conservation Service
Forest Service Department of Energy
Fish and Wildlife Service Agricultural Research Service
Bureau of Land Management Tennessee Valley Authority
Army Corps of Engineers Bureau of Ocean Energy Management
Department of Defense National Oceanic and Atmospheric Administration
Bureau of Reclamation Census Bureau (state lines)



National nonprofits collaborate with USGS to leverage resources and contribute elements of projects for PAD-US:

  • The Nature Conservancy (TNC) – provides national data on TNC holdings as well as data coordination with other TNC
  • Trust for Public Land (TPL) – provides data on urban parks, and from the TPL Conservation Almanac
  • Ducks Unlimited (DU) – provides data on DU holdings and other associated data

TPL and Ducks Unlimited also lead the National Conservation Easement Database which provides this data to PAD-US.


Use the visualization below to explore for state stewards: Completeness is the estimate of the degree to which all fee protected areas are inventoried for the state, plus qualitative consideration for overall accuracy (alignment, attribute completion) of the data.  Estimates of easement inventory completion are available from the National Conservation Easement DatabaseLast Update is the most recent year a state’s data was updated into PAD-US (not all states can be updated every year, some may be in forthcoming PAD-US releases). Capacity is a qualitative indication of the programmatic robustness of the State Steward (consistency, budget, commitment, etc.).


Type State Steward Contact Last Update