I just tried to find escapement tables on the WDFW website with no success.

A well functioning population of self-sustaining steelhead should be reasonable lopsided towards females. If it is not, the population is in trouble.

Survival to first return should be pretty close to 50:50. Unfortunately, I can't find a wild stock that has a R/S that averages even 1.0. Many are quite a bit lower.

Repeat spawners are primarily female. They spawn and leave while the males essentially spawn till they die. So, the repeats are mostly female. In Argentina, where a steelhead run got established, has shown seven or eight spawnings so they can come back a lot.

Sooooo, if your run has way more females than males that should be a sign of lots of repeat spawners and (very most likely) a self sustaining population.

Interesting to know the sex ratio of the Situk (I know they have a lot of repeats) and the Kamchatka streams.