One of the landmarks at Deer River State Forest is the Iron Bridge on Conservation Road, home to a designated campsite right on the river. There is some pretty impressive white-water on this section of the Deer River. I wouldn't call it a waterfalls, though it is pretty much that.
Taken on Wednesday November 25, 2015 at Deer River State Forest.
One of the large marshes along Conservation Road at Deer River State Forest as seen late November 2015.
Taken on Wednesday November 25, 2015 at Deer River State Forest.
The St. Regis Canoe route consists of several navigable stretches of the St. Regis River, including the reservoir just east of the hamlet of St. Regis Falls. Parking to access this reservoir and a boat launch is located downtown and is found off of South River Road via a large sign on NY 458 aka Santa Clara Road.
Interactive map that shows the Deer River State Forest, campsites and other useful information.