WCT Multi-state Assessment February 10, 2003 



Conservation Population Sympatric with Non-native fish (Check those that apply) 



Presence of Non-Native Fish 



IRainbow trout (or redband rainbow) from hatchery origin or transplanted from 

 isource outside of historic range 



[Brown trout 



Brook trout 



Lake trout 



Other cutthroat trout subspecies (Specify: 



) 



Other trout (Specify: 

 ) 



Other fish (Specify: 

 ) 



ic Risk Assessment: (Check one taking into consideration those actions and activities that 

 may influence genetic risk) 



Rank 



1 



Risk Characterization 



Introduced hybridizing species cannot interact with existing WCT population. Barrier 

 provides complete blockage to upstream fish movement. Native hybridizing species 

 (e.g. resident or anadromous redband) may be present in connected system. 



Introduced hybridizing species are in same stream and/or drainage further than 10 km 

 from WCT population, but not in same stream segment as WCT, or within 10 km where 

 existing barriers exist, but may be at risk of failure. Native hybridizing species (e.g. 

 resident or anadromous redband) may be present in connected system. 



Introduced hybridizing species are in same stream and/or drainage within 10 km of WCT 

 population and no barriers exist between introduced species and WCT population. 

 However, introduced hybridizing species have not yet been found in same stream segment 

 as WCT population. Native hybridizing species (e.g. resident or anadromous redband) 

 may be present in connected system. _____^____^ 



Introduced hybridizing species are sympatric with WCT in same stream segment. 



DQ Rating for Genetic Risk (Check one) 



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