The fish aren't all that much smaller in Yellowstone's small streams, and are sometimes the same size as fish in the big rivers. The feeders of the Firehole have fish that move up during summer when the main river heats up. And streams like Soda Butte, Cache, Slough, and Duck Creeks hold some big trout.
 Thin blue line |
Hatches are less important but don't totally discount them. These fish see few anglers and are not that skittish (except when it's shallow and clear, as on Slough Creek). Don't go fishing up just any creek without knowing where it goes, without letting someone know where you are, and without checking if it holds fish some streams are fishless.
Lots of these small streams come from or near lakes, ideal for taking lunch
or varying the fishing. Think dry flies, light leaders, stalking, kneeling, varied casts, staying low and dapping. Go with a buddy.
Some of the Finer Small Streams
Cascade Creek: Meadow stream full of cutts in the north-central part of the
park. Take the Howard Eaton Trail one-half mile west of Canyon Junction. The
stream parallels the trail more or less. Cascade Lake lies at the end of the
trail about five miles in.
Fan Creek: West side of park, 20+ miles north of West Yellowstone. Reach
this Gallatin feeder from Fawn Pass Trail onto the Sportsman Lake Trail. Fan
Creek is a great place to see moose or bear. Fan Creek is a smallish meadow
stream but holds some nice cutts and rainbows with a few solid browns.
Duck Creek: West side of park, up Highway 191, then east on Duck Creek Road. Wide, shallow stream that winds its way back and forth, slowly, through
wide grassy fields. Most anglers bump nymphs up tight to the bank and on
bottom to reach the athletic, big rainbows and browns and brook trout.
Obsidian Creek: At Indian Creek Campground south of Mammoth near the Gardner River. Small brook trout for sure but it's a great place to teach kids how to
fish. The river stops and starts in the down-timber forest, then smoothes out
through the open meadows.
Cougar Creek: On the west side of the park, take Highway 191 north, then
east on Cougar Creek Road. Met a mad moose here a few years ago right when I
hooked up with a nice brown (probably in the mid-teens). I don't know what
was the bigger surprise seeing the moose up close all of a sudden or not
catching the same little brookie I had caught at every slack bend pool.
Specimen Creek: Feeder stream to the Gallatin River. Take the Specimen Creek
Trail from Highway 191 north of West Yellowstone. Fish this more for the
thick brush scenery than the big fish. Catch rainbow and cutthroat hybrids
in the two rugged forks of the creek.
 On the trail |
Nez Perce Creek: Medium-size meadow stream that enters the Firehole River
less than six miles south of Madison Junction. Fishing is good for brown trout
and the occasional rainbow and brook trout. We've always seen bison in and
around the stream. Concentrate on the water above the bridge to Spruce Creek
(where you'll find fun fishing for small brookies and a few browns and
rainbows). You can park at Fountain Flats Road and fish the 4 and a half miles
upstream or take the Mary Mtn. Trail. If you see Mary Lake on the map at the
stream's headwaters, don't think of fishing it. It has no fish.
Cache Creek: In the northeast section of the park, on the Northeast Entrance
Highway. Take the Lamar River Trail or Cache Creek Trail. Underfished even
though its confluence with the Lamar lies near the highway. Anglers can
expect to catch bigger rainbow and cutthroat than in many similar-sized
streams.
Soda Butte Creek: In the northeast section of the park, this diverse stream
parallels the Northeast Entrance Highway. Soda Butte Creek has lots of
changing characteristics, ranging from a bumpy run in its upper reaches to a
wide, meadow stream as it meets up with the Lamar. The rainbows and cutts are
above average in size.
Upper Gibbon: At Virginia Meadows, at the Norris-Canyon Road river crossing
on the downstream side. The brook trout are small but plump. This is a good
place to learn how to cast or fly fish.
Others: Glen Creek, Indian Creek, Panther Creek, Blacktail Deer Creek,
Hellroaring Creek, Aster Creek, Beaver Creek (near Heart Lake), Slough
Creek. Any number of Upper Yellowstone streams like Thorofare Creek but not until
July 15. The pressure is almost nonexistent because the streams are in the
smack-dab middle of bear country.