The Southern Tier of NYS has a gray shale bedrock which creates shallow, warm streams in general. However there are always surprises. Sometimes a gorge will cut through the water table and make some springs where trout hold all summer. Some of the moraines can have good springs too. Not something that gets a public airing though and people keep secret. The streams I fish are generally shallow and full of stunted smallies, but the few good holes have fast action for bigger smallies with a mix of browns, rock bass, and fallfish for variety. You have to scout the good holes out though. Much of the area has gone back to woods and the streams are better for it, plus the wet summer so far has the streams in good shape. Finally the Cohecton should be OK with the wet summer (but can warm quickly) and the Cohecton/Chemung system can be OK for smallies and walleyes in the summer. Summer is not a good stream trout season for the area, but you kind probably find some action.
All is not lost, there may be some surprises in the streams in the area if you can pry some local info out. Good luck.
Also, I have been turned on to jigging for lakers in the Finger Lakes - Keuka Lake nearby has numbers of wild lakers these days. However you need a boat and a knowledgable friend/guide.
