According to the PSU site, Brook XIV is due this year.
Adams, Bedford, Berks, Blair, Centre, Clearfield, Clinton, Cumberland, Franklin, Huntingdon, Lackawanna, Lehigh, Luzerne, Lycoming, Mifflin, Montour, Northumberland, Perry, Potter, Schuylkill, Snyder, Tioga, Union, and York Counties; last emerged in 1991.
Here’s the link:
http://www.ento.psu.edu/extension/factsheets/periodical_cicada.htm
I remember this from 1991. This is the BIG one.
It can be very good, if you hit it right. That’s the big if. The fish hit the bugs hard in the early part of the hatch. Later the fish seem to get glutted.
The bugs will not be in every part of the counties listed. Even when they are on a particular stream, they are not on the whole length of the stream. Sometimes they will be in a watershed up on the hills, but not down near the creek.
Often they will be very heavy at one spot, and 5 miles away there will be none.
On a cold morning, they’re not active, they wake up after the sun warms them. And sometimes there are a lot of cicadas at a stream, but the stream may have very few trout left in June.
So, it’s not all that easy. You have to do some scouting around, and asking around, to find a stream that has both trout and cicadas in it simultaneously.
It’s not just about trout, though. Bass and carp eat them too.