Carcassman,,

Natural abundance,, carrying capacity means,, especially for pinks,, sockey and chum that there are so many fish they are digging up each others reds to spawn,, that they are pushing each other out onto the bank while moving upstream...

Imagine how many steelhead stayed resident when the rivers were producing natural abundance,, so much food,, we must have had 30 inch resident rainbows/steelhead in all our rivers... Also we must have had tidewater steelhead/rainbows that never went far from the mouth of the river..