I can't help with DRANO, as for the WHITE SALMON I fished it last thur.s nite to no avail, their were about a doz. boats out. I only heard of a couple caught.
The main reason i went down so early was to take my boat down to get a parking spot.

Definately too early, as you have noticed the counts are on the way up, very good numbers, they should only get better.

Water temp. at Bonniville is 67 deg.s some say warmer water = better fishing a couple more deg.s and we will see.

I agree with you mid august is when it starts getting good.
I've been fishing their for many years and i suspect we will have a good season.

keep um sharp and in the water
GOOD LUCK