Habitat destruction has to include the reduction in salmon carcass delivered biomass by 95%. As studies in Canada showed, the number of smolts increased as the nutrient level in the stream went up.

Those studies also showed that fixing habitat increased productivity. But neither one (nutrients and inorganic (structure) habitat) had anywhjere near the benefit that both did when working together.

We seem to be focused on fixing the structural habitat and ignoring the productivity that spawning salmon provided.

And before you tell me that a million pinks in the Skagit and/or Green had no detectable impact, the currency for nutrients is kilogrammes per square metre of stream habitat. In S Prairie Creek, where the up to about half a million pinks has shown a benefit to the wild steelhead. So, do the math. How much bigger is the Green or Skagit? That is the biomass we need to shoot for.