WCT Multi-state Assessment February 10, 2003 



Part 1 -- Historical Distribution 57 



Part 2 — Current Distribution, Genetic Status and Densities 58 



Part 3 — Change in Focus - Identification of Individual Conservation Populations and 



Application of Risk Evaluations for each Population 59 



Genetic Risk Assessment 59 



Significant Disease Risk Assessment 60 



Conservation Population Risk Assessment 61 



Isolation 63 



WCT ASSESSMENT FLOW CHART 66 



PART 1 -HISTORICAL DISTRIBUTION INFORMATION 66 



PART 2 - CURRENT DISTRIBUTION INFORMATION 66 



PART 3 - CONSERVATION POPULATION INFORMATION 67 



DATA FORMS 68 



I BARRIERS 68 



II HISTORICAL DISTRIBUTION 69 



III CURRENT DISTRIBUTION 70 



IV WESTSLOPE CUTTHROAT CONSERVATION POPULATION RISK 

 ASSESSMENT 72 



Appendix C - GIS scale issues 79 



Appendix D. Genetic Considerations for Fish Managers 81 



Appendix E - Miles of Habitat Historically (circa 1800) Occupied by Westslope Cutthroat Trout 



intheU.S 87 



Appendix F - Genetic Status of Westslope Cutthroat Trout in U.S. by River Basin 90 



Appendix G - Miles and Number of Conservation Populations by HUC 93 



Page iv 



