July 1990 



This report contains memoranda prepared by che staff of the Montana Reserved Water 

 Rights Compact Commission, evaJuadng the practicality of irrigation on the Northern 

 Cheyenne Reservation. This evaJuadon is a necessary component of the quandficatjon 

 of the Tribe's reserved water right. The memoranda include anaJv'ses ofarable land, water 

 availability, economics, and engineering designs, all of which were performed indepen- 

 dendy of analyses by the Tribe or the federal government. The report also describes 

 extensive data input to the Geographic Information System and computerized evalua- 

 uons of the hydrology of the Reservadon. 



Staff members whose work is presented in this report include Anal Anderson, Soil 

 Scientist, Craig Bacino, Geographer: Scott Freburg, GIS Specialist; Bill Grciman, 

 -Agricultural Engineer; Bob Levitan, Hydrologist; and Igor Suchomel, Hydrologist. 

 Previous RWRCC or DNRC staff whose work was reviewed and, in some cases, incor- 

 porated into the report include Greg Ames, Lynda Saul, Steve Holnbeck, Nancy Granger, 

 Glenn Smith and Earl Griffith. Susan Cotdngham coordinated the research and analysis 

 of techrucal issues described in this report. 



My personal thanks for the pauence, good humor, and skills ofMary Bertagnolli, Danette 

 Hayek, and Marilyn Richardson, who typed drafts, redrafb, and final copies of these 

 memos, to James Madden for his assistance and counsel, and to Carole Massman and Dan 

 Vichorek for their editorial expertise. A separate document analyzes the legal and 

 historical bases for the Northern Cheyenne claims. 



Marcia Beebc Rundle 

 Counsel/Program Manager 



