Copyright 2013 James Marsh
Fly Fishing Guide for Big Flat Brook New Jersey
Above Route 206, the Flat Brook is a small stream that averages about fifteen to twenty-
five feet wide with fast moving pocket water. It flows mostly through forest in its upper
section and most of the stream is tightly enclosed with tree limbs. There are some areas
that flow through open fields in the upper section. This area can be accessed from the
Route 206 Bridge parking area by hiking in an upstream direction.

The “Fly Fishing Only” section is just below the upper section. It runs from the Route 206
Bridge downstream for about four miles to Mountain Road. The stream slows down some
and is wider in this section, probably averaging from twenty to forty feet wide. There are
some larger, deeper pools in this section.. There is a short portion of the stream called the
“Blewett Track” that has additional regulations located within this larger Fly Fishing Only
section of the stream. The Little Flat Brook tributary enters not far below the 206 bridge
adding to the flow of the stream.

The stream holds trout all the way to Flatbrookville, where it converges with the Delaware
River. The lower section is much larger, averaging around fifty feet in width. It has some
very deep, long pools that hold some of the larger holdover trout. The stream is paralleled
by county road #16615 in this section. There is plenty of parking along the road where the
stream can be accessed. Roads #615 and #640 follow along the stream for most of the
lower section.

Since the water types are varied, your fishing methods, techniques and strategies need to
vary accordingly. Most all of the water should be fished in an upstream direction. The
faster, small upper section should be approached using short, upstream cast. In the
smoother, slower sections of the stream it may be necessary to fish some of the hatches
(such as the Tricos) using a downstream approach and presentation.

If you pay attention to what is about to hatch and focus on fishing imitations of that insect’s
nymphs or larvae, you should be more successful than you would be using attractor flies,
although they will catch their share of trout in the faster sections of water. When a major
hatch is underway, such as the Hendricksons, Sulphurs, Light Cahills, Slate Drakes and
Tricos, you should focus on matching the insect with emergers, duns and spinners as
appropriate.
Big Flat Brook River
New Jersey
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Photo Courtesy of Dennis McCarthy