Blue Stream Fly Fishing
Fly Fishing Report for:

Yellowstone River - Yellowstone Lake Outlet - Wyoming

Hatch Chart - Best Access/Spots - Local Fish - About

Water Flow Chart

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Using Water Flow Charts & Weather Reports: Begin with our water flow charts to grasp stream velocity and volume – look for stable or rising trends to pinpoint ideal fishing times. Learn to interpret sudden spikes or drops, which can indicate potential challenges. Next, consult our weather reports to understand ambient conditions. Pairing the two, you can anticipate fish behavior, choose the right gear, and select the best fishing spots. Use these tools together for a holistic approach to your next fishing adventure.

In-Depth Weather

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Directions To Location

Hatch Chart

Month Hatch Time of Day Recommended Fly Sizes Popular Fly Patterns
January Midges Warmest part of the day #20-#22 Zebra Midge
February Midges Afternoon #20-#22 Buzzer Midge
March Blue Wing Olives Noon-2pm #16-#18 Blue Dun
April Blue Wing Olives, Midges Afternoon #16-#18 for BWO, #20-#22 for Midges Blue Dun, Zebra Midge
May Blue Wing Olives, Caddis Afternoon and Evening #14-#18 for BWO, #14-#16 for Caddis Blue Dun, Elk Hair Caddis
June Green Drakes Afternoon #8-#12 Green Drake Dun
Yellow Sallies Afternoon and Evening #14-#16 Yellow Sallie Stonefly
July PMDs Morning and Afternoon #14-#16 PMD Emerger
Grasshoppers Warmest part of the day #6-#10 Parachute Hopper
August Tricos Morning #20-#24 Trico Spinner
Terrestrials Midday #12-#20 Chubby Chernobyl
Caddis Evening #14-#18 Elk Hair Caddis
September Blue Wing Olives Afternoon #18-#20 Blue Dun
Terrestrials Midday #12-#20 Dave's Hopper
October Blue Wing Olives Afternoon #18-#22 Blue Dun
November Midges Warmest part of the day #20-#22 Griffith's Gnat
December Midges Warmest part of the day #20-#22 Zebra Midge

While we strive to ensure the precision of our hatch charts, some reflect broader river region insights. Through ongoing partnerships with local guides and fly shops, we’re committed to refining our data. Should you notice any inconsistencies or have feedback, we welcome you to reach out. 

Best Fishing Spots

The Yellowstone Lake Outlet on the mighty Yellowstone River offers a bounty of spots for fly fishing, especially during the summer season. The sheer scale and varying landscape of the outlet and surrounding river offer a diverse array of opportunities for catching cutthroat trout.

  • Cut Bank – An effective spot where fish love to hold up due to the deep water and coverage provided by the overhanging bank.
  • Old Faithful, an area near the geyser which provides wade and boat fishing, offering spectacular views and ample fish.
  • LeHardy Rapids – This spot is excellent for catching Cutthroat Trout, especially in the late spring.
  • Bridge/Hot Springs area – A remarkable area all through the fishing season, primarily due to the warm waters.
  • West Thumb – An outstanding spot for fly fishing, particularly in the late summer to early fall.

Best Access Points

The Yellowstone River – Yellowstone Lake Outlet is a popular destination for fly fishing enthusiasts. Here are some of the most recommended access points:
  • LeHardy Rapids: This section, located just downstream of Fishing Bridge, provides excellent fishing opportunities for Cutthroat Trout.
  • Fishing Bridge: Although fishing from the bridge is prohibited, downstream areas, preferably a boat ride away are excellent for Cutthroat Trout.
  • Yellowstone Lake: Located at the outlet region from the Yellowstone River, it provides a habitat for mature Cutthroat Trout.
  • Pelican Creek: This creek empties into the river on the eastern shoreline of Yellowstone Lake, offering a great location for fly fishing.
  • The Outlet: This location is where the Yellowstone River begins to flow out of Yellowstone Lake, creating an exceptional spot for catching larger trout varieties.
Please be aware that specific rules and seasons apply for fishing in these areas.

Local Fish

  • Yellowstone Cutthroat Trout: This native species is one of the most prevalent on the Yellowstone River and a popular target for fly fishermen.
  • Mountain Whitefish: While not as sought after as trout, the Mountain Whitefish is nonetheless a common catch in this area.
  • Rainbow Trout: An introduced species, Rainbow Trout are now regularly caught on the Yellowstone River. They are known for their fighting spirit and eye-catching coloration.
  • Brown Trout: Brown Trout grow to large sizes on the Yellowstone River. They’re infamous for being challenging to catch, making them an exciting target for experienced fly fishermen.
  • Brook Trout: Although not as common as other species, Brook Trout are still caught occasionally on the Yellowstone River. Many appreciate their beautiful speckled patterns.
  • Arctic Grayling: This species is less common on the Yellowstone River, but their unique dorsal fin and beautiful colors make them a favorite among fly fishermen who are lucky enough to hook one.
  • Lake Trout: Although not native to the area, some Lake Trout are present in the Yellowstone Lake and can be caught near its outlet.
  • Cutbow Trout: This hybrid fish, a cross between the Yellowstone Cutthroat and the Rainbow Trout, is an exciting and unexpected catch for many fly fishermen in the area.

About The River

One of North America’s most significant bodies of water, the Yellowstone River, boasts of a beautiful retreat, the Yellowstone Lake Outlet.

Born in the Rocky Mountains, the Yellowstone River dares its exciting journey through valleys and plains to meet the Missouri River. Right from this stunning river arises the Yellowstone Lake Outlet, located by the Yellowstone Lake, the largest high elevation lake in North America.

Here’s a quick peek into its history:

  • 1800s: Earliest writings on Yellowstone’s geography by white explorers mention the lake outlet.
  • 1860s: Officially surveyed during the Washburn-Langford-Doane Expedition.
  • 1871: Members of the Hayden Geological Survey noted the tremendous fish population.
  • Present day: Known for its trout fishing, wildlife viewing, and the popular Fishing Bridge visitation site.

A trip down the Yellowstone River – Yellowstone Lake Outlet will surely leave you bewitched by America’s spellbinding natural wonders!


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