Here is where my "but here is how we used to do it" gets wound up. With the long history of net fisheries coupled with the tide records and flow records it should be relatively easy to develop a model that looks at tides, flow, catch effort, rinsize, and so on. It may not be statistically "perfect" but it should give us a real-time view of what is going on.

Way back when the Fraser managers (after IPSFC) were willing to share with me the model they used to manage Fraser stocks by individual stock timing. I wanted it for SS chum, as there are a number fo different stocks and timings within the "South Sound Fall Chum" that we were managing as a conglomerate. This was 35 years ago. That model, which adjusted for changes in observed timing, would probably be a good place to start.

I must be getting old.