Copyright 2013 James Marsh
Fly Fishing Big Gunpowder Falls River,
Maryland
The Big Gunpowder River starts in Pennsylvania and
flows through Maryland into Cheaspeake Bay. The
Prettyboy Reservoir Dam releases 55 degree water
year-round, making it one of the better tailwaters in the
East. The river runs through the beautiful Gunpowder
Falls State Park.

A self-sustaining brown trout fishery exist in the seven
mile long tailwater section of Gunpowder Falls River
below Prettyboy Reservoir. This section is not stocked.
There are catch and release regulations for the upper
seven miles of the river, or from the dam to Blue Mount
Road.

Brown trout make up almost all of the population of trout
but there are a few rainbow and brook trout. Trout are
stocked below the catch and release section of the river.
Most of the stream consists of long pools with short
section of riffles joining them. There is one section of
rapids below Route One called the "Pot Rocks" because
of the deep holes in the stream.

Little Falls River is one of the larger tributaries of the
main Gunpowder River. There are several other
tributary streams. Put and take trout fishing is available
on the Lower Big Gunpowder Falls River.

Seasons:
Fly fishing Big Gunpowder Falls River is good all year.
Spring:
Spring provides the best opportunity to catch a trout on
a dry fly.
Summer:
The summer season can have low discharges from the
Prettyboy Dam, making the fishing tough.
Fall:
Autumn is the time the brown trout spawn and loose a lot
of their normal caution.
Winter:
Trout can be caught during the winter. Midge fishing is
usually good.

Fly Fishing Guide to the Big Gunpowder Falls River
The best method to use to consistently catch the brown
trout in Big Gunpowder Falls River is nymph fishing.
(Click Here To Continue)
Type of Stream
Tailwater

Species
Brown Trout (wild)
Rainbow Trout (stocked)
Brook Trout (stocked)

Size
Medium

Location
Northern Maryland

Nearest Towns
Monkton
Baltimore

Season
Year-round

Access:
Good

Non-Resident License
State of Maryland

Weather
National Weather Service Link

Hatch Chart
Coming Soon

Dam Discharges:
USGS Real-time Water Data

Fly Fishing Guide

Hatches and Flies

Fly Fishing Gear
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Big Gunpowder Falls
River, Maryland
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Options For Selecting Flies:
1. Email us with the dates you will be
fishing this stream and we will send
you a list of our fly suggestions. Please
allow up to 24 hours for a response.

2. Call us 800-594-4726 and we will
help you decide which flies you need.

3. Call or email us with a budget for
flies and we will select them and get
them to you in time for your trip.

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over $50 are shipped Priority Mail.