When yo look at closures versus openers when there are fish to be protected, the whole stock composition is, or should be, taken into account.

Fishing in the Satsop, for example, will hit Satsop fish. I know, Duh!. But, fishing in the Chehalis will have all the other stocks mixed in and buffer the Satsop fish.

This works if all the stocks in question are there at the same time. If, and Rivrguy knows way better than I, Satsop is the only late coho in the system then any opener in the watershed downstream of the Satsop will hit them.

Back when I was involved in chum management in PS we could show, on paper, that fisheries needed closing because the harvest had been taken because all of the stocks were, for accounting purposes, assumed to be equally available over the whole season. No timing differences. We knew, though, and the local Tribes were kind enough to point out, that the latest returning stocks had not even been fished on yet.

Reality and Management Models often collide.........