Garrison Diversion operates and maintains the Garrison Diversion Unit (GDU) existing facilities under a cooperative agreement with the Bureau of Reclamation. These facilities consist of the McClusky Canal, New Rockford Canal, Oakes Test Area, and the Snake Creek Pumping Plant. Garrison Diversion also assists with O&M of other constructed GDU facilities operated by the Bureau of Reclamation and the U.S. Fish and Wildlife Service.