yea I fished it quite a bit this spring.
Cross river which flows through the park is stocked with brown trout and also contains native brook trout. It is a very nice place to fish and gives you a sense of remoteness as you have to hike in to get to the river in most places. Most of the trout i caught there this spring were small native brook trout. they aren't big but they are beautiful fish. look for some of the deeper pools and you'll find some fish. I've even caught a tiny largemouth, smallmouth and yellow perch which must have swam up from the Res.
the river is catch and release only, no live bait allowed.