Scouting it out

Beautiful pictures. I'm not really sure I've ever fished any of the forks pre-runoff, is it decently productive?
I haven't fished the forks early in the season much in recent years, after discovering lakes, but I used to enjoy evenings on the Middle Fork in April when the March Brown spinners are in the air (and on the water). That being said, the Snoqualmie forks are mostly a July through September gig.