Planning Your Fly-fishing Trip To Yellowstone
...........................  ......................Fly Fishing Yellowstone National Park

When to Come and What To Expect:

Fly Fishing: Outside Yellowstone National Park - July - South Fork of the
Snake
The South Fork of the Snake usually clears from the Spring runoff by the first of July
but it depends on the snow pack for the year. The flows will usually be high, up to
20,000 cfs. Most of the fishing should be done from a drift boat. There are a few places
the stream can be waded, mainly the feeder creeks and a few others with high water,
but you need to pay close attention to the water. It can be very dangerous.

The Salmonfly hatch starts in late June and moves upstream. By the middle of the
month it is usually taking place in the upper section of the sixty plus mile river. It offers
some great dry fly and nymph fishing. Along with the huge Salmonflies, you will find
plenty of Golden Stoneflies and Little Yellow Stoneflies, called Yellow Sallies. They too,
provide excellent dry fly action.

The Pale Morning Dun mayfly hatch starts about the middle of the month, continuing
the dry fly action. The PMD hatch will last about all summer long and is the largest and
most consistent mayfly hatch on the South Fork of the Snake.

Towards the end of July, the Spotted Sedges and Little Sister caddisflies begin to
appear. Late evening in late July, you can find plenty of trout feeding on the egg laying
caddis and well as those emerging.

July isn't the best month to choose to fish the South Fork, but it is a good one and
should be one of the alternatives you consider for July. We do recommend a drift boat
and for the high water, we think you should use a local guide until you become familiar
with the water.