You can fish in most national parks, and millions of people do it every year. Fishing in national parks is governed by a federal regulation, 36 CFR 2.3, that borrows the surrounding state’s fishing laws as a baseline and then layers park-specific restrictions on top. In practice, that means you’ll usually need a state fishing license, you’ll follow tighter rules on gear and bait than you would on state waters, and a handful of parks run their own permit system instead. Sort out the license, the gear rules, and any park-specific closures before you go, and the trip stays simple.
Do You Need a License to Fish in a National Park?
Almost always, yes. Federal regulation adopts state licensing requirements by default, so if the state where the park sits requires a license for the kind of fishing you’re doing, you need one inside the park too.1eCFR. 36 CFR 2.3 – Fishing States sell licenses online, by phone, and through sporting goods retailers.2U.S. Fish & Wildlife Service. Purchase a Fishing License
Non-resident annual licenses generally run somewhere between $30 and $175 depending on the state. For a short visit, most states sell one-day to seven-day permits in the $10 to $65 range. Children under 16 are often exempt entirely, and reduced-fee licenses exist in many states for disabled veterans, active military, and low-income seniors. Rules vary state to state, so check with the wildlife agency where your park is located.
The Nine Parks That Don’t Require a State License
Nine parks are exempted from the state-license requirement directly in 36 CFR 2.3(b):
- Big Bend
- Crater Lake
- Denali
- Glacier
- Isle Royale (inland waters only)
- Mammoth Cave
- Mount Rainier
- Olympic
- Yellowstone
The exemption only means the state license doesn’t apply. Several of these parks issue their own fishing permit that you’re still required to carry.3GovInfo. 36 CFR 2.3 – Fishing
Yellowstone’s Own Permit
Yellowstone is the one most people ask about. Anyone 16 or older needs a Yellowstone-specific fishing permit, and a Wyoming, Montana, or Idaho state license doesn’t substitute. A three-day permit is $40 and a season permit is $75.4National Park Service. Yellowstone National Park Fishing Kids under 16 can fish without a permit if they’re supervised by someone who has one. Permits are sold at park visitor centers, ranger stations, and general stores inside the park, or online through Recreation.gov.5Recreation.gov. Yellowstone National Park Fishing Permit
Federal Rules on Gear and Bait
The National Park Service adopts state fishing law as a starting point, then adds its own restrictions. Where an NPS rule and a state rule conflict, the NPS rule wins.6National Park Service. Fishing in Parks Something that’s legal on your state license outside park boundaries isn’t automatically legal inside them.
In fresh water, you’re limited to hook-and-line fishing and you have to stay with your rod or line. Live or dead bait fish, amphibians, and unpreserved fish eggs are prohibited in fresh waters, with narrow exceptions in specific waters where non-native species are already established and the park isn’t trying to eliminate them.1eCFR. 36 CFR 2.3 – Fishing The bait rule exists to keep anglers from releasing organisms that don’t belong into waters that support native fish.
Saltwater rules work differently. The freshwater gear and bait restrictions don’t carry over. Fishing with nets, spears, or other gear in marine park areas follows state law unless the park has designated otherwise.7GovInfo. 36 CFR 2.3 – Fishing Coastal parks like Dry Tortugas and Channel Islands often have their own no-take zones and gear rules, so read the park’s marine regulations before you go.
Practices That Are Banned Everywhere
36 CFR 2.3(d) prohibits several activities across the entire park system, regardless of state law:
- Chumming, meaning throwing fish parts, food, eggs, chemicals, or any other substance into fresh waters to attract fish.
- Using drugs, poisons, explosives, or electricity in any park waters, fresh or salt.
- Digging for bait anywhere except on privately owned land within park boundaries.
- Keeping a fish that doesn’t meet size or species requirements. You have to return it to the water immediately.
- Fishing from motor road bridges, within 200 feet of a public raft or float used for water sports, or in designated swimming beaches, surfing areas, or public boat docks.
- Commercial fishing, unless a specific federal statute authorizes it for that park.
The bait-digging rule catches people out. Turning over rocks for worms or grubs on a riverbank is a habit, and it’s a violation in a national park.1eCFR. 36 CFR 2.3 – Fishing
Park-Specific Rules to Check Before You Cast
Each park’s superintendent can restrict or close waters after consulting the state wildlife agency, and this is where the rules get specific.7GovInfo. 36 CFR 2.3 – Fishing
Species Rules and Catch-and-Release
Many parks require catch-and-release for native species and, at the same time, require you to kill and keep certain invasive fish. Yellowstone requires anglers to kill any lake trout caught in Yellowstone Lake because the species threatens native cutthroat trout. Getting this backward, by releasing an invasive or keeping a protected native, can result in a citation.
The NPS recommends single, barbless hooks for catch-and-release because they reduce handling time and injury.8National Park Service. Catch and Release Safely Some parks make barbless mandatory rather than recommended.
Seasonal and Area Closures
Parks close specific waters during spawning seasons or to protect sensitive habitats, and those closures shift year to year based on wildlife surveys, drought conditions, and management priorities. A stretch that was open last summer may be closed this year. Some parks also limit certain waters to artificial flies and lures only, banning natural bait even where federal rules would otherwise allow it.
Lead Tackle
There’s no system-wide ban on lead fishing tackle, but individual parks have banned lead sinkers and jig heads, and some have stopped selling lead tackle in park stores. Lead sinkers are a known cause of poisoning in loons and other waterfowl that swallow lost tackle. Non-lead alternatives like tin, bismuth, and tungsten are sensible in any park with sensitive bird populations, whether or not they’re required.
Invasive Species Precautions
Invasive mussels, aquatic plants, and parasites travel on waders, boat hulls, and gear. Some parks require boat inspections and dry-time waiting periods before launch. Yellowstone has proposed a 30-day mandatory dry period for certain motorized boats and a permanent ban on any watercraft previously fouled by mussels. The Fish and Wildlife Service’s “Clean, Drain, Dry” protocol, which involves removing visible plants and mud, draining water from motors and livewells, and letting gear air-dry for at least five days, applies to all fishing equipment and watercraft.9U.S. Fish & Wildlife Service. Clean, Drain, Dry Moving between waters within the same park, or between parks on one trip, means running through it each time.
Penalties for Violations
Violating an NPS fishing rule is a federal offense under 18 U.S.C. 1865. The maximum penalty is six months in prison, a fine, or both, plus court costs, and as a Class B misdemeanor the fine can reach $5,000.10Office of the Law Revision Counsel. 18 USC 1865 – National Park System Penalties11eCFR. 36 CFR 1.3 – Penalties
Rangers rarely push for the maximum on a first offense. Fishing without a license or using prohibited bait more typically draws a fine of a few hundred dollars. Repeat violations, fishing in closed waters, or harming protected species move penalties toward the top of the range. If the conduct also violates the Endangered Species Act, by catching or injuring a listed species, penalties climb to as much as $25,000 for a civil violation and up to $50,000 with prison time for knowing criminal violations.12U.S. Fish & Wildlife Service. U.S. Fish and Wildlife Service – Section 11 Penalties and Enforcement
How to Confirm the Rules for Your Park
Go to the park’s official page on nps.gov and look for a “Fishing” or “Things to Do” section. Most parks post current regulations, seasonal closures, permit requirements, and species rules there. If a question isn’t answered on the site, call the park’s visitor center. Rangers handle fishing questions constantly and can tell you what’s open, what gear is allowed, and whether you need a park-issued permit.
Once you arrive, check bulletin boards at visitor centers, ranger stations, and trailheads near fishing access. Parks post last-minute closures and rule changes there that may not have made the website yet. A printed regulation handout at the entrance station takes half a minute to grab and can save the trip.