Short answer: metal detecting is legal in much of the US, but who owns the land decides the rules. It's banned in national parks, allowed with conditions on many national forests and Bureau of Land Management lands, and anything from state parks to city parks can be open, permit-only or closed depending on the state and city. On private land you always need the owner's permission. Federal law protects archaeological objects on federal land, so you can never dig up or remove historic artifacts there.
This guide explains how the rules work at each level, the federal laws every detectorist should know, and how to check the rules for a specific place. It's general information, not legal advice. Rules change, so always confirm with the land manager before you hunt.
There's no single US metal detecting law. Instead, each landowner sets the rules for their land: the federal government for national parks, forests and other federal land; your state for state parks, beaches and state land; your city or county for local parks; and private owners for everything else. Find out who owns or manages the place you want to hunt, and you'll know whose rules apply.
| Land type | Typical rule | Check with |
|---|---|---|
| National parks, monuments, seashores | Banned | National Park Service |
| National forests | Often allowed in developed areas; never on historic or archaeological sites | The local ranger district |
| BLM land | Often allowed for recreation; historic and archaeological items protected | The local BLM field office |
| Corps of Engineers lakes | Usually allowed only on designated beaches or previously disturbed areas | The lake office |
| State parks | Varies by state: open, permit-only or banned | The state park agency |
| State beaches and land | Varies by state | The state agency that manages the land |
| City and county parks | Varies by city: open, permit-only or banned | Parks and recreation department |
| Private land | Allowed only with the owner's permission | The landowner |
Federal rules for the National Park System prohibit possessing or using a metal detector in national parks (36 CFR 2.1). The ban covers national parks, monuments, historic sites, battlefields and national seashores managed by the National Park Service, regardless of state law. Leave the detector at home, or keep it broken down and packed away so it can't be used while you're in the park.
The US Forest Service treats metal detecting as a low-impact recreational activity in appropriate places, and most developed areas such as campgrounds and beaches don't need a permit unless signs or local rules say otherwise. What's never allowed is digging into or disturbing historic or archaeological sites, or removing historic artifacts. If you find something that looks historic, stop detecting and report it to the local Forest Service office. Using a detector to prospect for gold is a separate activity under mining rules, and prospecting that disturbs the surface may require filing a Notice of Intent.
Much BLM land in the West is open to casual recreational detecting and prospecting, which is why it's popular with gold hunters. The same archaeological protections apply, and much of the best gold ground is covered by active mining claims. Detecting on someone's claim without permission means taking their minerals. Check claim status with the BLM before you hunt.
Many US Army Corps of Engineers lakes allow metal detecting on designated swimming beaches or other previously disturbed areas. Each lake can restrict it to protect historic or natural resources, and rules for finds vary, so check with the lake office.
Assume detecting is not allowed on military land and federally protected areas unless the managing agency tells you otherwise.
The practical rule: on public land, if it looks old, historic or man-made from long ago, leave it where it is and report it.
Every state sets its own rules for state parks, state forests, state beaches and other state land, and they differ a lot. Some states allow detecting in many parks, some require a permit, and some ban it except in rare cases. Many states also have their own antiquities laws protecting historic and archaeological objects on state land and in state waters. For examples, see our state guides:
Local rules vary the most. Some cities allow detecting in all parks, some require a permit, some limit digging tools or ban digging entirely, and some prohibit detecting completely. Sports fields, landscaped areas and historic sites are often off-limits even where detecting is allowed. Check the city or county code, or call the parks and recreation department and ask.
Private land is often the best ground available, and it's always off-limits without permission. Ask the owner, explain what you'll do, and promise to fill every hole. Get permission in writing if you can, and agree up front who keeps what you find. Detecting without permission is trespassing, and in many states removing items can be theft.
Beach rules depend on who owns the beach. City and county beaches follow local rules, state park beaches follow state rules, and national seashores are federal land where detectors are prohibited. Many public beaches welcome detecting, especially on dry and wet sand, but some limit it to certain areas or hours. Check before you go; our beach detecting tips cover the rest.
Finders keepers isn't a universal rule. Laws on lost and abandoned property vary by state. Items with a clear owner, such as a class ring with a name or a wallet, should be returned, and some states require you to report found property above a certain value to the police. Historic and archaeological objects on public land belong to the government, and anything found on private land may belong to the landowner unless you've agreed otherwise. When in doubt, ask.
Yes, in many places. It's banned in national parks and some other areas, and allowed with conditions on much public land. Always check the rules for the specific place.
Often yes, but it depends on who manages the beach. National seashores are federal land where detectors are prohibited; city and state beaches set their own rules.
Sometimes. Many state parks and some city parks require one, and some national forest activities do. Private land needs the owner's permission rather than a permit.
Penalties range from a warning or fine to confiscation of your detector. Removing archaeological resources from federal land can bring serious federal penalties, including prison.
On private land with permission, and in many public places where detecting is allowed, modern coins and lost items are generally yours, but check local rules and any agreement with the landowner. Historic artifacts on public land are not yours to keep.
Once you know where you're allowed to detect, choose a detector that suits that ground. Our beginner's guide explains how, or browse all metal detectors.
Rules checked in October 2026. Always confirm current rules with the land manager.
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