TY - RPRT TI - Conceptual and numerical models of groundwater flow in the Ogallala and Arikaree aquifers, Pine Ridge Indian Reservation area, South Dakota, water years 1980-2009 AU - Kyle W. Davis AU - Larry D. Putnam AU - Anneka R. LaBelle PY - 2015 DO - 10.3133/sir20145241 UR - https://pubs.usgs.gov/publication/sir20145241 ID - sir20145241 ER -