Bingo Salmo!

On the hopeful side, we know that mass spawning cleans fines out of gravel. On some Fraser tribs, spawning sockeye account for way more than 50% of the total annual sediment movement.

Assuming we could at least maintain the level of sediment input (ideally reduce) if we totally stopped killing pink and chum they could be put to work cleaning the gravel. And providing nutrients for the ecosystem. But, it would be the fastest way to reduce the fines and increase egg-fry survival.

The downside is that the recent super-abundance of pinks depressed the Chinook. But, if that problem was in the ocean and due to lack of food there then maybe other actions could also be taken.

We are in the last few minutes of the 24hr survival clock but we can turn back the hands, I think.