YCT Multi-state Assessment 



February 10,2003 



IV CONSERVATION POPULATION RISK ASSESSMENT 



For each mapping unit managed as a conservation population determine whether it is part of a 



meta-population or an isolet. Draw circles around the meta-population or isolate. Give unique 



numbers to each circle and draw a triangle around each number. Fill out form below. 



HUC Number: Meta-population/isolet unique 



number: 



Meta-Population or Isolet (Circle one) 



Downstream source Y or N (Circle one) 



Genetic Risk Assessment: (Circle one taking into consideration those actions and activities 

 checked above that may influence genetic risk) 



Genetic Risk 



Hybridizing species CANNOT INTERACT with population. Barrier provides complete blockage to 

 upstream fish movement. 



Hybridizing species are In same stream and/or drainage FURTHER THAN 10 KM from population, but not 

 in same stream segment as population, or WITHIN 10 KM WHERE BARRIER EXISTS, BUT MAY FAIL. 



Hybridizing species are in same stream and/or drainage WITHIN 10 KM of population and NO BARRIER 

 EXISTS; however, hybridizing species not in same area as population. 



Hybridizing species are SYMPATRIC with population In same stream segment. 



Circle DQ Rating for Genetic Risk 



Population Risk Assessment: (Circle response for each risk 

 give a data quality rating based on table below) 



DQ Rating 



Low - Judgment 

 only 



Med -Medium 

 High-High 



factor and 



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