Lewis River Canyon
Lewis River YNP
Copyright 2016 James Marsh
Fly Fishing The Lewis River -
Yellowstone National Park
The Lewis River has just about every type of water that
exist in a trout stream. It flows from Shoshone Lake
through the Lewis River Channel into Lewis Lake. From
there it flows through some cascades, then a smooth
section of water and off into a deep canyon for the
remainder of its journey to the Snake River.

The Lewis Channel is the first part of the stream. It's
about three miles long. This is a fairly large stream.
The trout in the Lewis Channel are brown trout that
average 15 to 20 inches with some ever larger. There
are also some lake trout in the channel.

This Lewis Channel is accessible by boat from the lakes
or from the Lewis River Trail that you can access at the
Dogshead Trailhead. It's a three mile hike to the
channel via the trail.

Just below Lewis Lake, the river flows over a few
cascades. This is not far upstream from where the South
Entrance Road crosses the river. The section below the
bridge, about two miles long, is a wide, smooth flowing
river that changes drastically when it heads over the
falls off into a deep canyon. The canyon section is very
difficult to access and contains mostly small trout. The
river levels out prior to converging with the Snake River
not far from the south boundary of the park.

The Lewis River season last just about the entire
Yellowstone Fishing season.
There isn't much fishing during the Spring because the
water usually still to cold.
Summer is a good time to fish the river.
Fall may be the best time for fly fishing the Lewis River.
Brown trout fishing is excellent in the Lewis Channel and
the lower section of the river just above the Snake River.

Fly Fishing Guide to the Lewis River
You need to use a variety of fishing methods to fish the
Lewis River depending on which species you are after
and which section of the river you are fishing.
Here To Continue)
Type of Stream

Cutthroat Trout
Brown Trout
Brook Trout
Lake Trout


Northwestern Wyoming, YNP

Nearest Towns
Jackson Hole, Wyoming

Last of May - October


Park License
Yellowstone National Park License

National Weather Service Link

Hatch Chart
Perfect Fly Hatch Chart

Fly Fishing Guide

Hatches and Flies

Fly Fishing Gear

Stream Flow Data:
Real Time USGS Data
Lewis River, YNP
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