Casting topwaters in the early morning in mid May through the early summer can be lights out for bass. I've even caught trout on a Zara spook doing this. When the salmon smolts are thick I've caught 9 different species in 1 day on the lake using Smolt imitating lures. Good luck, wait for the water to warm up a bit.
I don't advise salmon fishing from shore at the creek mouth as there is a 100yd closure radius and it is patrolled by WDFW.