It holds excellent brook trout in its headwaters, and opens up to outstanding brown and rainbow territory as it winds its way from Elizabethtown, to Wadhams and on to Willsboro where it empties into Lake Champlain. This fine fishery is only getting better with age, and an active salmon restocking program has restored a once great river with a native fish. Each spring and fall the lower sections, about 30 miles of the river, offer landlocked salmon in the 6 to 12-pound range. It is an easy river to wade and is accessible by the roadside for nearly its entire course. The Salmon River - Flowing from near Look Lake towards Malone, it is a well stocked, small stream with a good population of browns, rainbows, and brook trout.
Tributaries offer fine midsummer brook trout fishing.
The Schroon River begins out of the town of North Hudson, and continues to drain into Schroon Lake. The outlet of the lake joins the main flow which continues on through Chestertown past Warrensburgh where it empties into the Hudson River. The Schroon contains mostly browns and brookies, although it has a landlocked salmon population that is becoming more productive every year, with both a spring and fall run. The St. Regis River - Its three branches begin from, in and around, the St. Regis Canoe Area. Composed of some 50 ponds, its remoteness and scenery are among the finest in the Park.