If you have not figured it out yet,, environmental controls and policy is fake as well,, based on lies and fake science/math... A method to create shortages and scarcity of naturally abundant resources...

Its like fish passage on creeks that do not have fish,,, you spend lots of money on problems that do not exist to expose shortages that do not have the capacity to exist,, only to spend money and not to produce abundance,, so the shortage perpetually continues,, so that the measure of control and extortion continues...

The only way to achieve abundance of salmon/steelhead is to either stop/curtail commercial fishing or to enhance hatchery production.. ultimately what it comes down to is that the rivers are not cultivating enough fish because not enough fish are planting their seeds on the spawning beds...