Slim to none chance.
Skamania are not a salmon/steelhead hybrid and they DO NOT spawn in August.

The variations of steelhead apperance is huge. It jumps, its long, it had a big head or tail....all of which are not identification traits for Skamania.
Salmon and steelhead do not breed and produce offspring.
Google doesn't provide the right info on all topics
Skamania were discontinued over 15yrs ago by Ontario.

I watched a few fish come to the Saugeen Shores scales last week that were in fact Coho that hit the scales as steelhead.