(Above) Buffalo Bill Dam, Cody, WY

Welcome to the official Web site of the Great Plains Region. The GP Region is the largest and most ecologically diverse region of the Bureau of Reclamation, encompassing all or parts of nine western states extending from the Canadian border adjoining Montana and North Dakota to the southern tip of Texas.

The Great Plains Region has its roots in three former Reclamation regions: the Upper Missouri Region in Billings, Montana; the Lower Missouri Region in Denver, Colorado; and the Southwest Region in Amarillo, Texas.

In October 1985 the Upper and Lower Missouri regions were merged into the Missouri Basin Region with headquarters in Billings. In 1988 much of the Southwest Region was joined into the Missouri Basin Region and became the Great Plains Region. <find out more>

This region manages over 150 major water storage and delivery structures associated with 80 reservoirs. Over 1,000 water service and repayment contracts are administered for the region's projects to provide water to irrigate over two million acres of farmland and to meet the daily needs of over two million people. The region's 21 powerplants generate over three billion kilowatt hours of electricity each year, enough to meet the power needs of about a quarter million homes. Recreation is also an important use of the region's reservoirs with over 14 million visits annually.