by 



Allen A. Elser, Fish and Wildlife Biologist Supervisor 

 Robert C. McFarland, Fish and Wildlife Biologist 

 Dennis Schwehr, Fish and Wildlife Biologist 

 Montana Department of Fish and Game 



TECHNICAL REPORT NO. 8 



DDi](?i3B'[f eUCOG}"!? 



conducted by the 



Water Resources Division 



Montana Department of Natural Resources and Conservation 



32 S. Ewing 



Helena, MT 59601 



Bob Anderson, Project Administrator 

 Dave Lambert, Editor 



for the 



Old West Regional Commission 



228 Hedden Empire Building 



Billings, MT 59101 



Kenneth A. Blackburn, Project Coordinator 

 July 1977 



