The extent of brine contamination in the shallow aquifers in and near the East Poplar oil field is as much as 17.9 square miles and appears to be present throughout the entire saturated zone in contaminated areas. The brine contamination affects 15?37
Thamke, Joanna N. jothamke@usgs.gov,Smith, Bruce D. bsmith@usgs.gov. Delineation of brine contamination in and near the East Poplar oil field, Fort Peck Indian Reservation, northeastern Montana, 2004-09. 2014-01-01.