Does this help? -- https://www.fws.gov/endangered/esa-library/pdf/listing.pdfPerhaps wise fisheries scientists (@Smalma, @Salmo_g, @BDD, @anyothers) could weigh in here and explain the process of a species becoming listed as endangered. This thread indicates some (many?) OP rivers aren't meeting escapement requirements (goal or requirement?). I don't know if these rivers that aren't meeting "escapement" requirements is fact or impression or legend but it does seem that steelhead numbers are severely depleted and I'm ignorantly leaning towards "it's a fact". Some posters have used the term "extirpated" or "nearly extinct". I don't think there's much debate that steelhead numbers are way down, "on the brink".
Everyone seems to blame WDFW for so many of our fisheries problems (at times, me too: guilty as charged). I don't think a decision to list a species as endangered comes down to WDFW since ESA is a federal law (NMFS? USFWS?).
I'm clueless as to what happens to tribal fisheries of ESA listed fish, especially on tribal land. All of us do know what ESA listings mean to sport angling.