Northeast of Newburgh near Roscoe, the Beaver Kill is a very popular Spring and Fall fly fishing river. The Beaver Kill River runs about 44 miles from the headwaters, through the Catskill Mountains down to the confluence with the East Branch Delaware River. This popular stream is known for is rainbow trout, brown trout and brook trout.
The upper section is the first 27 miles from the headwaters to Junction Pool. It is generally well shaded by forest and fed by cool springs.
The lower section is the later 17 miles from Junction Pool (the confluence with the Willowemoc) down to the East Branch Delaware River. This is the big river section known for pools and riffles. The more popular fishing spots are Carins Pool and Horse Brook Run, both of which are difficult to wade.
The Beaver Kill River runs parallel to SR17, which provides some easy fly fishing access points.
Overall, Beaver Kill River is the 12th most popular fly fishing river of all 32 fly fishing spots in New York.