Fly Fishing Regulations in Wyoming: What Every Angler Needs to Know Before Casting

Wyoming’s rivers and streams rank among the most coveted fly fishing destinations in the American West — but getting on the water legally means understanding a set of rules that goes well beyond simply buying a license. From gear restrictions on the North Platte to catch-and-release designations on blue-ribbon tailwaters, the state’s regulations are specific, water-by-water, and enforced.

Whether you’re wading the Miracle Mile for the first time or returning to a favorite stretch of the Snake River, this guide walks you through every key regulation you need to know before you tie on your first fly. Several rules changed effective January 1, 2026 — and fishing the wrong stretch with the wrong gear can now cost you a citation.

Fly Fishing License Requirements in Wyoming

Before you make a single cast, you need the right paperwork. Any angler aged 14 or older — resident or nonresident — must carry a valid Wyoming fishing license while fishing public waters in the state. That requirement applies whether you’re swinging streamers on the Green River or nymphing a high-country tributary in the Wind River Range.

As of 2026, license fees break down as follows. A Wyoming fishing license costs $27 for residents (annual) and $102 for nonresidents (annual), with daily options available for as little as $6 (resident) and $14 (nonresident). Keep in mind that the base license fee doesn’t cover everything. Every angler aged 14 and older must carry a valid license plus a $21.50 conservation stamp when fishing most Wyoming waters.

Important Note: A Wyoming fishing license does not cover Yellowstone National Park. Yellowstone requires a separate NPS fishing permit issued by the National Park Service, not WGFD. Wyoming licenses do cover Grand Teton National Park.

Wyoming residents under the age of 14 do not require a fishing license. Nonresident youth under the age of 14 do not need a fishing license if they are accompanied by an adult with a valid Wyoming fishing license. For anglers who qualify for special status, Wyoming residents who are permanently and totally disabled can get a lifetime fishing license and conservation stamp free of charge, and residents aged 65 or older who can show 30 total years of state residency qualify for a “Lifetime Pioneer” fishing license at no cost.

Fishing licenses can be purchased online or at one of the many license-selling agents throughout Wyoming. Annual fishing licenses are valid for 365 days from the date of purchase. Daily and multi-day licenses are also available. You can also check out how fishing license requirements in Colorado compare if you’re planning a multi-state trip through the Rockies.

One day each year, the license requirement is lifted entirely. Free Fishing Day on June 6, 2026, invites families and friends to enjoy fishing in Wyoming without a license, while following all fishing regulations, creel limits, gear restrictions, and stream closures.

What Counts as Fly Fishing Gear Under Wyoming Law

Wyoming’s regulations draw a precise legal line between what qualifies as an artificial fly or lure and what does not. Understanding that definition matters on any water designated as “artificial flies and lures only” — the most common special restriction you’ll encounter on premier trout streams.

Artificial flies and lures are man-made and do not include living or dead organisms or edible parts thereof, natural or processed foodstuffs, scents, flavors or chemical attractants, whether added in the manufacturing process or applied afterward. That means scented fly patterns, even if they look like traditional flies, are not legal on restricted waters.

The regulations further break down the two main categories:

• Artificial lures are single devices regardless of the number of hooks, including spoons, spinners and plugs made of metal, plastic, wood or other non-edible materials, or plastic products made to resemble worms, eggs, fish or other aquatic organisms.
• Artificial flies include flies, streamers, jigs, or poppers tied from such materials as thread, feathers, hair or tinsel.

If a specific water is listed as “artificial flies and lures only,” then bait use is strictly prohibited. Artificial flies and lures must be manmade and cannot include edible parts, scents, flavors, or chemical attractants.

Pro Tip: Pegged attractors — a popular nymphing technique — have their own separate restriction. A “pegged attractor” means any bead, yarn, rubber strand, molded plastic or other non-edible material fixed or pegged on a line or leader above a bare hook or artificial fly. These are now prohibited on specific high-traffic North Platte sections. Check the section-specific rules before you rig up.

Wondering how different types of flies for fishing stack up against each other? Understanding your options can help you fish smarter on waters with gear restrictions. You may also want to review different types of fishing rods and types of fishing reels suited to Wyoming’s varied stream conditions.

Fly Fishing Only Waters in Wyoming

Several of Wyoming’s most productive trout reaches are designated “artificial flies and lures only,” meaning bait of any kind is off the table. These restrictions are applied water-by-water and often cover specific reaches defined by landmarks like bridges, dams, or highway markers rather than entire river systems.

Two of the most notable artificial-only sections in the state are found in the North Platte drainage. The North Platte River from the Colorado-Wyoming state line downstream to the Saratoga Inn Bridge (Texas Trail) in Carbon County is open to fishing by the use of artificial flies and lures only. Similarly, the Encampment River, from Wyoming Highway 230 at Riverside downstream to its confluence with the North Platte River in Carbon County, is also restricted to artificial flies and lures only.

The Gray Reef section received an expanded restriction effective January 1, 2026. The section requiring the use of artificial flies and lures at Gray Reef was extended downstream to Government Bridge. That means more river miles now fall under the artificial-only rule than in previous seasons.

Key Insight: You must check the regulations for your specific water body. If the water is listed as “artificial flies and lures only,” then bait is prohibited. Many anglers assume statewide rules apply everywhere — they do not. Rules are enforced by specific water reach, not by the river name alone.

For context on how other states handle gear restrictions on trout waters, see how bass fishing regulations in Minnesota approach designated waters, or review the trout fishing season in Wyoming to pair season timing with the correct gear rules for each stretch you plan to fish.

Catch-and-Release Rules on Designated Waters in Wyoming

On some of Wyoming’s most heavily fished trout waters, catch-and-release is not just a best practice — it is a legal requirement tied directly to creel and size limits. Understanding how these rules interact with each other is essential before you decide whether to keep a fish.

On the Miracle Mile section of the North Platte, the rules are strict. The North Platte River from Kortes Dam downstream to Pathfinder Reservoir (Miracle Mile) in Carbon County carries a creel limit of one trout per day or in possession, and all trout less than twenty inches shall be released to the water immediately. That 20-inch minimum means virtually all fish you encounter must go back.

The Gray Reef section carries the same size threshold. The North Platte River from Gray Reef Dam downstream to the Wyoming Highway 220 bridge has a creel limit of one trout per day or in possession, and all trout less than twenty inches shall be released to the water immediately.

Wyoming’s regulations also address what happens the moment a fish leaves the water. Any fish placed on a stringer, in a container, in a live well, or not released immediately to the water shall be considered reduced to possession of the angler and shall be killed prior to being transported from the water of origin. No fish that has been reduced to possession shall be released alive without prior written approval from the Department.

Common Mistake: Placing a fish in a net or live well while deciding whether to keep it counts as reducing it to possession under Wyoming law. If you plan to release a fish, do it immediately and carefully at the water’s edge.

Certain streams and lakes receive special protection to preserve genetically pure Yellowstone cutthroat populations. Some are catch-and-release only, while others allow limited harvest. These regulations counteract decades of hybridization and competition from non-native species. Always verify the specific rules for the drainage you’re fishing before heading out.

Barbless Hook Requirements in Wyoming

One of the most significant changes to Wyoming fishing regulations effective January 1, 2026, is the mandatory barbless hook requirement on several high-traffic North Platte River sections. If you fish these waters, this rule applies to every hook on every rig you use.

For the high-traffic stretches of the North Platte River below Seminoe Reservoir, new rules require the use of single-point, barbless hooks. The requirement covers the Miracle Mile, Alcova Afterbay, Gray Reef and Fremont Canyon areas. This was implemented to reduce the number of hook injuries with catch-and-release fish.

The regulation defines the term precisely. A barbless hook means a hook with a single sharpened point, either manufactured without barbs or having the barb removed or flattened against the shank. You can legally crimp the barb on an existing hook with pliers to comply — you do not need to purchase new hooks for every outing.

Water Section	Barbless Hook Required	Pegged Attractors	Artificial Only
Miracle Mile (Kortes Dam to Pathfinder Reservoir)	Yes	Prohibited	Yes
Alcova Afterbay	Yes	Check regulations	No (single-point barbless only)
Gray Reef (Dam to WY-220 bridge)	Yes	Prohibited	Yes (extended to Government Bridge)
Fremont Canyon	Yes	Prohibited	Check regulations

By prohibiting pegged attractors in these high-traffic areas, Wyoming Game and Fish is working to reduce mortality rates on catch-and-release waters. You can still use egg patterns, soft beads, and sliding beads — just not the pegged variety.

A new seasonal closure also accompanies the barbless rule in the Gray Reef area. A new spawning closure area was instituted for Gray Reef downstream of Ledge Creek, effective from April 1 through May 15 each year to protect spawning rainbow trout in the defined areas.

Size Limits, Bag Limits, and Slot Limits in Wyoming

Wyoming applies both statewide defaults and water-specific overrides for size and bag limits. The statewide baseline gives you a starting point, but special regulation waters — which include most of the state’s top fly fishing destinations — routinely carry tighter restrictions.

Statewide Trout Limits

Except as otherwise provided for an individual water, the total combined creel and possession limit for the trout category, regardless of the waters a person is fishing, shall not exceed six trout per day or in possession. That combined limit covers rainbow, cutthroat, brown, and other trout species together, with the exception of brook trout, lake trout, and splake, which are tracked separately on some waters.

Stream-specific limits are often more restrictive. Streams typically have a limit of three trout, with only one allowed to exceed sixteen inches. On the Miracle Mile and Gray Reef sections discussed above, the creel limit drops to just one trout per day, and all fish under 20 inches must be released immediately.

Slot Limits and Size Restrictions

Even if a statewide limit exists, some waters set lower limits or specific size restrictions. Follow the special rule first. These rules often apply on blue-ribbon rivers, tailwaters, and trophy stretches. Slot limits — where fish within a defined size range must be released — appear on select warmwater fisheries as well.

• Walleye (North Platte Drainage): The creel limit on walleye is twelve per day or in possession, with no more than six allowed to exceed fourteen inches.
• Walleye (Glendo Reservoir area): All walleye less than fifteen inches shall be released to the water immediately.
• Bass (select Carbon County waters): The creel limit on largemouth and smallmouth bass in combination is three per day or in possession, with no more than one allowed to exceed twelve inches.

Pro Tip: Write down the access point, the river section, and the county before your trip. Many rules are mapped by reach, not by the river name alone. A quarter-mile difference in where you’re standing can change which set of regulations applies.

For reference on how neighboring states structure their limits, see bass fishing season in Wyoming for warmwater species rules, or browse fishing license requirements in Indiana and fishing license requirements in Ohio for comparison.

Special Regulation Waters and Blue-Ribbon Fisheries in Wyoming

Wyoming designates certain waters as special regulation or blue-ribbon fisheries based on their ecological value, fish population quality, or conservation needs. These designations almost always come with additional restrictions on gear, harvest, or season dates — and they represent some of the best fly fishing in the country.

Blue-ribbon waters and trophy stretches frequently require artificial flies or lures, barbless hooks, or catch-and-release. The North Platte River corridor — including the Miracle Mile, Gray Reef, Alcova Afterbay, and Fremont Canyon — is the most heavily regulated stretch in the state and also among the most productive.

Select river sections and lakes have reduced creel limits or slot limits designed to maintain exceptional size structure. The Gray Reef section of the North Platte now requires single-point, barbless hooks as of 2026, reducing mortality in catch-and-release fisheries. The Alcova Afterbay, Fremont Canyon, and portions of the Miracle Mile all carry special tackle restrictions. These rules create the conditions for trophy fisheries — places where average trout measure 16 inches and 20-inch fish are realistic goals.

Beyond the North Platte, Wyoming manages several other categories of special waters:

• Yellowstone Cutthroat Conservation Waters: Certain streams and lakes receive special protection to preserve genetically pure Yellowstone cutthroat populations. Some are catch-and-release only, while others allow limited harvest.
• Kokanee Salmon Waters: Flaming Gorge Reservoir and a few other select waters hold kokanee salmon, a landlocked sockeye that provides unique fishing opportunities.
• Jackson Region Waters: In the Jackson Region, anglers have more time and higher limits on several key waters. Jackson Lake will no longer be closed to fishing in October and will remain open throughout the month. On the Snake River, the daily trout limit has doubled from three to six on the stretch between the Jackson Lake Dam and the gauging station, with length restrictions removed.

Key Insight: Some waters have special rules like gear limits, slot limits, seasonal closures, and artificial-only areas. These sections override the general statewide rules. When in doubt, always apply the more restrictive rule.

If you’re planning a multi-species outing, review the different types of fishing available in Wyoming alongside the regulation booklet. You can also explore different types of fishing rigs and different types of fishing lines to make sure your setup is both effective and compliant on special regulation waters.

Where to Find Current Fly Fishing Regulations in Wyoming

Wyoming’s fishing regulations are updated annually, and several significant changes took effect at the start of 2026. Relying on last year’s booklet or a friend’s recollection is not a safe approach — regulations can change by reach, by species, and by season within a single river system.

Here are the most reliable sources for current rules:

1. Wyoming Game and Fish Department (WGFD) Official Website: The Chapter 46 regulation establishes fishing season dates, locations, legal methods, creel limits and limitations for all game fish species, and also addresses the possession and use of bait fish, fishing contests and free fishing days. The full regulation booklet is available as a free PDF download at wgfd.wyo.gov.
2. eRegulations.com Wyoming Fishing Page: This site hosts the official Wyoming fishing rules and regulations, including license and permit information, season dates, size and creel limits and more. It’s available at eregulations.com/wyoming/fishing and is particularly useful for searching water-specific rules by area.
3. License-Selling Agents and WGFD Regional Offices: You can buy your license online through the Wyoming Game and Fish Department portal, at any regional WGFD office, or through authorized in-state agents. Staff at regional offices can also answer water-specific questions.
4. Wyoming Trout Unlimited: The Wyoming TU regulation summary breaks down the most important changes for trout anglers in plain language and is updated when new rules are announced.

Before your next fishing trip, take a few minutes to review the complete regulations for the specific water you’re fishing. Regulations can vary significantly from one drainage to another, and even within the same river system. The Wyoming Game and Fish website has the full 2026 fishing regulations available for download, and it’s worth keeping a copy in your truck or vest.

Important Note: Wyoming fishing regulations can change annually. Always check the current year regulations for dates, closures, and updated special rules. Emergency closures can also be issued mid-season, so check the WGFD website close to your trip date, not just when you plan it.

For state-by-state license comparison, you can also review fishing license requirements in California, fishing license requirements in Texas, or fishing license requirements in Florida to understand how Wyoming’s system compares to other major fishing states.

Wyoming’s fly fishing regulations reward anglers who prepare. The rules exist to protect the fisheries that make rivers like the North Platte and Snake River worth traveling to in the first place — and knowing them before you wade in is the simplest way to make sure you’re part of that conservation effort, not in violation of it.