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Located in Northwestern New Jersey, the Big Flatbrook is one of the State's finest rivers. It hosts many fish throughout its entire stretch, and is a favorite of many New Jersey anglers. Running through a beautiful scenic stretch of wilderness, the Big Flatbrook ultimately dumps into the Delaware River near Flatbrookville.

Above Route 206, this river is a small stream with much pocket water and small pools. It averages 15- to 30-feet wide throughout the upper reaches, and is well shaded by the trees that line its banks. Tumbling riffles and runs create ample oxygen, and provide cover for the abundant trout in this section of river. Casting here, however, can be challenging in spots, due to the tight cover surrounding the stream.

Fly Fishing Map Icon


Beginning at the Route 206 Bridge, and extending four miles downstream to the bridge on Mountain Road, you'll find a Fly Fishing Only area. This great stretch of water offers plenty of pools and riffles-enough to keep any fly-rodder happy. Here, the river opens up to some 20- to 40-feet across, and a short distance south of Route 206 is where the Little Flatbrook dumps in. From the spot the Little Flatbrook enters, the Big Flatbrook takes on more personality.
Hatch Chart
The river widens a bit more, and gains strength thanks to the added shot of water. The pools become deeper, and the runs become more defined. This stretch, all the way to the Delaware River, is very productive. At times, the Big Flatbrook even holds Delaware River fish that travel up in search of food and cooler water temperatures. Access along the Big Flatbrook is fairly easy. County Route 615 follows the bottom half of the river, with the middle half of the river followed by County Route 640. You'll find plenty of places to park and fish, especially along the Fly Fishing Only stretch. If the water is high, it's a good idea to try fishing above the Route 206 Bridge.

Hatches on the Big Flatbrook are quite prolific. Some of its better hatches are Blue-Winged Olives, Light Cahills, Sulphurs, and March Browns. Many other species of Mayflies hatch on the river, along with varieties of Caddis and Stoneflies. The Big Flatbrook provides great angling throughout most of the season. You'll find brook, brown, and rainbow trout in the river. The excellent water quality makes this one of New Jersey's finer streams.

The next time you're in Northern New Jersey, stop by the Big Flatbrook and give it a try.