the colors indicate rainbow, but size and the kype look like steelhead. they do ship steelhead and salmon above the dam so they can spawn in tributaries above, but being it was in fall, it is highly unlikely the fish is a steelhead, as the bulk of wild steelhead return february- april to the santiam system. the thing that really throws me off is there are really no ample food sources in the lake or river to produce trout that size, unless the fish was down deep eating kokanee the whole time, which is also very unlikely because rainbow trout are not very predatory.Very interesting