Climate and Biota of the Pine Ridge Reservation
With an annual average of 20 inches a year, precipitation in the Black Hills is relatively moderate. Because clouds lose moisture as they pass over the hills, more precipitation occurs when compared to the low precipitation levels of the surrounding prairies. The Badlands have significantly lower precipitation levels when compared to that of the Black Hills, resulting in little vegetation.
Pine Ridge is located in the Great Plains region which encompasses the nation's largest grassland biome, producing nearly a quarter of the nation's agricultural crops and livestock. The varying topography of the Black Hills allows for an abundance of flora and fauna.
In this area, the western species of ponderosa and limber pine coexist with the eastern species of burr oak and American elm. Although rare in this part of the United States, the paper birch, quaking aspen, and white spruce can also be found here.
In South Dakota, the pine marten and fringe-tailed myotis bat are endangered species that are unique to the Black Hills. The fauna of the Badlands includes cliff swallows, bighorn sheep, and deer. Although endangered, the black-footed ferret is common here (An Educator's Guide to South Dakota's Natural Resources (more info) ). For more detailed descriptions on the flora and fauna of South Dakota, click here (more info)
Flora and Fauna of South DakotaResources about the flora and fauna of South Dakota
- An Educator's Guide to South Dakota's Natural Resources (more info) This website focuses on environmental education and includes pages on the flora, fauna, endangered species, and other natural resources of South Dakota. The pages feature descriptions and illustrations, and are intended for use by educators.
Climate of the Pine Ridge ReservationResources about the climate of the Pine Ridge Reservation
- Long-term Trends in Precipitation for Water Years 1931-98 For the Study Area (more info) This USGS page provides three graphs detailing precipitation by year in the Black Hills.