skip to main content

SciTech ConnectSciTech Connect

Title: Electricity Generation from Geothermal Resources on the Fort Peck Reservation in Northeast Montana

Tribal lands owned by Assiniboine and Sioux Tribes on the Fort Peck Indian Reservation, located in Northeastern Montana, overlie large volumes of deep, hot, saline water. Our study area included all the Fort Peck Reservation occupying roughly 1,456 sq miles. The geothermal water present in the Fort Peck Reservation is located in the western part of the Williston Basin in the Madison Group complex ranging in depths of 5500 to 7500 feet. Although no surface hot springs exist on the Reservation, water temperatures within oil wells that intercept these geothermal resources in the Madison Formation range from 150 to 278 degrees F.
 [1] ;  [2]
  1. Gradient Geophysics Inc., Missoula, MT (United States)
  2. Birkby Consulting LLC, Missoula, MT (United States)
Publication Date:
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Technical Report
Research Org:
Fort Peck Assiniboine & Sioux Tribes, Poplar, MT (United States)
Sponsoring Org:
Country of Publication:
United States
15 GEOTHERMAL ENERGY Fort Peck Reservation; Assiniboine and Sioux Tribes; Montana; Geothermal Resources