RT since I'm a retired old goat and visiting my daughter in Ohio I too have some free time to glance at the puter:) All the youngsters are probably doing the family thing today.
As far as when the Salmon make their appearance it's as you say,scattered fish until First week of Sept,then some runs the first week or so,about the end of second week they will start running,then about third week it's fish on!Of course this all depends on the water flow.