Well Doc, it's hard to say right now, but If I were you, I'd pay close attention to the water levels and the water clarity. If the rain we're supposed to be getting discolors the rivers, you'll be fishing black wooly buggers the entire time.
Now, if it's a little rainy and cloudy, you may get into some Blue Winged Olives.
Overall, the Beaverkill has been fishing fairly well over the past month or so. Say a prayer for overcast weather and clear streams. If the levels go up a little bit, that shouldn't be an issue.