United States Protected Areas Database (PAD-US) 3.0
U.S. Geological Survey (USGS) Gap Analysis Project (GAP), 2022, Protected Areas Database of the United States (PAD-US) 3.0: U.S. Geological Survey data release, https://doi.org/10.5066/P9Q9LQ4B.
Carl BoettigerUpdated 3 Apr 2025Public