Where there are brookies there are almost always chubs, I know some streams in the SE that have both and the brookies are doing just fine. What no one has said is that brookies are predators and as they grow larger eat other fish almost to the exclusion of bugs and small stuff.
Some of the streams I fish it is obvious, because when left at the top of the food chain as the primary predator, brook trout grow quite large they can't do that eating just bugs. That's why I'm always saying where ever you find a big brown you could find a big brookie if brookies were the top predator.
Put brown trout into a brookies stream and you almost always tip the balance in favor of brown trout, that's another reason to not stock brookie streams. Even if there are large brokk trout in a watershed the browns tend to take over. And don't talk to me about introduction of, pike, smallies and other non native fishes into brookie drainages. The brookies almost never survive.
Sal, I wouldn't worry to much about chubs, but keep an eye on the stream. The time of the year may have something to do with where the brookies may be found.
afish, don't worry about Saucon Creek, there are plenty of trout there, I've been taking photos of them.
