Pine Ridge Land Information SystemThe Pine Ridge Land Information System (PRLIS) is a web-based land information system designed to assist members of the Oglala Sioux Tribe to access information about their lands and resources. Includes layers for: Parcel Layer (2010), County Plat Maps (2017), Original Allotment (1904), Bennett County Homestead Map (1910), Average Life Expectancy (2013), Historic Treaty Boundaries (1851, 1868, 1877, 1910), Range Units (2012), Badlands Bombing Range (1942), CDC Social Vulnerability Index (2014), Three Mile Buffer around major towns on Pine Ridge, and an 1862 map of the United States. Also includes links to Bureau of Land Management Patent Database.