North of Baltimore and northwest of Hereford, the Big Gunpowder Falls River in the Hereford Area is a nationally renowned blue-ribbon trout stream. There area is lined by hemlocks and hardwoods. The Maryland Department of Natural Resources manages the river from Prettyboy Dam to Blue Mount Road as a special trout management area for catch and release with artificial lures only. Coldwater releases from Prettyboy Dam enable brown trout to reproduce naturally in this tailwater fishery. Other species include brook and rainbow trout, and smaller feeding fish, such as creek chub, common shiner, white sucker, northern hog sucker, mottled sculpin and American eel.
A fishing license and trout stamp are required for anyone 16 years of age, or older, to fish this area.
From the Baltimore Beltway (US695), take US83 north 12.4 miles to Exit #27, Mt. Carmel Road. Turn right on Mt. Carmel Road. At traffic light, turn left on York Road. Pass the Hereford High School and turn left on Bunker Hill Road. Continue on Bunker Hill Road to parking lot, located above the river.
Other parking areas for fly fishing on the Big Gunpowder River and trail access are located at the following road crossings: Falls Road, Masemore Road, York Road and Big Falls Road. The northern section above Falls Road is another favorite section on the Big Gunpowder Falls River for fly fishing.
Overall, Big Gunpowder Falls River is the 1st most popular fly fishing river of all 5 fly fishing spots in Maryland.