Located in Pinedale, WY

Thermopolis, WY
Fly Fishing

Thermopolis, Wyoming, offers excellent fly fishing opportunities, particularly on the Bighorn River, known for its healthy populations of brown and rainbow trout as well as mountain whitefish. The river’s steady flows, year-round fishable conditions, and abundant insect hatches make it a prime destination for anglers of all skill levels. Hiring a knowledgeable guide is crucial to maximize success, as they provide expert insights on local fish behavior, fly selection, and river access. Guided trips also ensure a safe and seamless experience, whether you’re wading or fishing from a boat. With its combination of accessible waters and quality fishing, Thermopolis is an ideal spot for a rewarding day on the river.

Thermopolis Wyoming is the Perfect
Spot for Anglers

Exceptional Year-Round Fishing

Thermopolis, WY, is home to the Bighorn River, offering consistent flows and healthy populations of brown trout, rainbow trout, and mountain whitefish. Its steady water temperatures and abundant insect hatches create ideal conditions for fishing in every season. Whether you’re casting in winter or summer, Thermopolis provides anglers with reliable opportunities to land impressive catches.

A Diverse Fishery

The Bighorn River near Thermopolis supports a variety of species, making it an excellent choice for anglers seeking diverse fishing experiences. From trophy-sized trout to lively whitefish, the river offers something for every type of fly fisher. This diversity ensures a dynamic and engaging outing no matter your goals.

Guided Expertise and Accessibility

Thermopolis is known for its accessible fishing spots, with wadeable sections and boat-friendly waters alike. Hiring a knowledgeable guide can enhance the experience by providing insights into local fish behavior, fly selection, and prime fishing locations. This combination of accessibility and expertise ensures anglers of all levels have a rewarding and memorable day on the water.

Best Fishing Spots in Thermopolis

Bighorn River

Flowing through Thermopolis, the Bighorn River is renowned for its healthy populations of brown and rainbow trout, as well as mountain whitefish. The river’s consistent flows and abundant insect hatches create ideal conditions for fly fishing throughout the year. Accessible wading areas and boat-friendly stretches make it suitable for both novice and experienced anglers. A fishing guide is highly recommended.

Wind River Canyon

Just south of Thermopolis, the Wind River Canyon offers a unique fishing experience amidst stunning canyon scenery. This section of the river is known for its deep pools and strong currents, harboring sizable brown and rainbow trout. Anglers should be aware that much of the canyon lies within the Wind River Indian Reservation, requiring a special fishing permit.

Hot Springs State Park

Located within Thermopolis, Hot Springs State Park provides family-friendly fishing opportunities. The park features several lakes stocked with trout and catfish, and the Bighorn River runs through it, offering additional fishing spots. Beyond fishing, visitors can enjoy hiking, picnicking, and the famous hot springs, making it an excellent destination for a full day of outdoor activities.

Seasonal Fishing Tips for Thermopolis

 

Spring & Summer Fishing

Spring and summer offer excellent fly fishing opportunities in Thermopolis, WY, as warmer weather and active insect hatches create ideal conditions for targeting trout.

  • Target Species: Brown trout, rainbow trout, and mountain whitefish are the primary targets, thriving in the Bighorn River during these seasons.
  • Best Techniques: Dry flies work well during morning and evening hatches, while nymphs and streamers are effective in deeper currents during the day.
  • Fly Patterns and Lures: Use dry flies like caddis and mayflies in the spring and terrestrials like hoppers in the summer, along with beadhead nymphs or woolly buggers for subsurface fishing.
  • Optimal Times: Focus on early morning and late evening for topwater action, with midday fishing targeting shaded areas or deeper pools for better success.
thermopolis wy fly fishing

Fall & Winter Fly Fishing


Fall and winter in Thermopolis, WY, offer unique fly fishing opportunities, with cooler temperatures and lower water levels creating favorable conditions for targeting trout.

  • Target Species: Brown trout and rainbow trout remain active, with fall offering excellent chances to catch trophy-sized browns during their spawning season.
  • Best Techniques: In fall, streamers work well for aggressive brown trout, while nymphing becomes the go-to technique in winter as fish move to deeper, slower waters.
  • Fly Patterns and Lures: Use streamers like woolly buggers or sculpin patterns in fall and small midge or baetis nymphs during winter months.
  • Optimal Times: Midday fishing is best during colder months when water temperatures are slightly warmer, encouraging more fish activity.
thermopolis wy fly fishing

FAQ's

Q: What makes the Bighorn River a good fishing spot?

A: The Bighorn River is an excellent fishing spot due to its clear waters, steady flows, and thriving populations of brown and rainbow trout, as well as mountain whitefish. Reliable water temperatures and abundant insect hatches support year-round fishing opportunities. With accessible wading areas and boat-friendly sections, it caters to anglers of all experience levels, offering a chance to catch trophy-sized fish in a picturesque setting.

A: Yes, you need a fishing license to fish in the Bighorn River. The specific license required depends on the state section of the river you’re fishing in; a Wyoming fishing license is necessary for the Wyoming portion, while a Montana license is required for the Montana section. Additionally, certain areas may require special permits, such as sections within the Wind River Indian Reservation, which necessitate a separate tribal fishing permit.

 

A: In Thermopolis, anglers can catch brown trout, rainbow trout, and mountain whitefish, which are abundant in the Bighorn River. The area is known for its healthy trout populations, supported by steady flows and strong insect hatches. These conditions make it an excellent destination for targeting both trophy-sized fish and high catch rates.

A: Yes, Thermopolis offers several excellent spots for fly fishing, particularly on the Bighorn River. Prime locations include the river’s accessible wading areas and boat-friendly stretches, which are known for their healthy populations of brown and rainbow trout. Additionally, nearby areas like Wind River Canyon and Hot Springs State Park provide diverse fishing opportunities, catering to anglers of all skill levels.

A: For fly fishing in Thermopolis, a 5 or 6-weight fly rod with a matching reel is ideal for targeting brown and rainbow trout on the Bighorn River. Use a floating line for dry flies and nymph rigs, and bring sinking tips or streamers for deeper runs and faster currents. Essential flies include mayflies, caddis, and terrestrials in the warmer months, along with midges, baetis nymphs, and streamers for cooler seasons. Waders and boots with good traction are recommended for wading, along with polarized sunglasses to spot fish and reduce glare.