Introduction
Conclusions
Prosser Dam
Roza Dam SH
SH Population
Resident Trout
3) Identify if resident trout samples collected above Roza Dam
    are different genetically from the steelhead collections from
    Roza Dam 
Roza Dam Steelhead
Project Objectives
Analysis
•  Individual resident trout samples were compared to a genetic
   baseline containing reference steelhead population samples
   from Satus Creek, Toppenish Creek, Ahtanum Creek, Naches
   River, Roza Dam, and Skamania Hatchery.
The probability of each resident being derived from a baseline reference population is determined by comparing the genotype of each resident to baseline allele frequencies.  Please note that a resident trout collection is not present in the baseline.  An optimal reference genetic baseline contains all potential stock sources for an unknown sample.  Since it is unknown whether the resident trout are a distinct stock, the individual assignment analysis should be interpreted as providing information about which steelhead stock present in the baseline is the most similar to each resident.