I fished a Loyalsock trib on July 4, when the flows were up at a pretty nice level. There were lots of boaters on the big creek.
The fishing on the trib wasn't amazing, but it was decent. I caught mostly brookies and one wild brown.
On this stream nearly every pool, i.e. every place worth casting too, was caused by fallen trees (large woody debris).
There were more fallen trees in the creek then there were when I fished the stream stretch 20 years or more ago. I think some of these high water events, maybe the big ones in fall 2011, probably put much of that large woody debris in the creek.
Big rainfall events are going to happen. The important thing is to manage the streams, the riparian vegetation, the floodplains well, so that the streams can still thrive after high flows.