Magnet fishing is legal in New York in the sense that no state law bans it by name, but whether any particular outing is legal depends on who owns the water, who owns the land you’re standing on, and what you pull out. Public rivers and lakes are generally open. National Park sites, state parks, and New York City parks each impose their own restrictions. And the moment you lift certain objects out of the water, from firearms to historic artifacts, state and federal law hand you obligations you can’t ignore.
Where You Can and Can’t Magnet Fish
New York’s Environmental Conservation Law defines “fishing” as taking or capturing fish, which doesn’t cover dragging a magnet for scrap metal.1New York State Senate. New York Consolidated Laws, Environmental Conservation Law – ENV 11-0103 Definitions So there’s no fishing license that covers you, and no statute that bans you. Legality shifts with location.
National Park Service Sites
Off limits. Federal regulations prohibit possessing or using a magnetometer, metal detector, or similar device in any national park area, with narrow exceptions for boat navigation electronics, devices packed so they can’t be used, and authorized scientific work.2eCFR. 36 CFR 2.1 – Preservation of Natural, Cultural and Archeological Resources A neodymium magnet on a rope doesn’t qualify. That rules out Gateway National Recreation Area, the Statue of Liberty, and other NPS sites in New York.
New York State Parks
The Office of Parks, Recreation and Historic Preservation issues metal detecting permits, but only for beaches, and only in the off-season between Labor Day and Memorial Day weekend. Detectors are not allowed in other areas of state parks.3New York State Parks. Metal Detector Permit 2025-2026 The permit rules address detectors rather than magnets, but they signal how tightly state parks control relic hunting. Call the individual park before you go.
New York City Parks
Metal detecting in NYC parks requires a permit from the Parks Department, restricts you to open areas in designated parks, and obligates you to report any “significant object” to the Urban Park Service within 48 hours. The Parks Department decides whether to keep it.4NYC Parks. Metal Detector Permits Skipping the permit risks a fine and confiscation of your gear.
Other State Land
New York Education Law Section 233 treats objects of historic interest on state-owned land as part of the state museum’s collections. No one may remove, excavate, or damage an archaeological or paleontological object on state land without written permission from the Commissioner of Education, and unlike federal law there’s no age cutoff — if it has archaeological interest, it’s protected. Violation is a misdemeanor, and anyone who finds such an object on state land must report it.5The New York State Museum. State Land Permits
Private Property
Magnet fishing on private property without permission is trespassing under New York Penal Law Section 140.05. Docks, waterfront parcels, and privately owned riverbank all count. Get permission in writing before casting.
Local Rules
Cities, towns, and counties can pass their own ordinances restricting magnet fishing, especially near dams, locks, bridges, and water treatment intakes. These aren’t collected in any central database. A call to the local clerk, parks department, or harbormaster is the only reliable check. Reservoirs that supply drinking water almost always prohibit the activity.
Firearms Are the Biggest Legal Trap
Guns are one of the most common magnet fishing finds in New York, and they’re where hobbyists most often stumble into criminal exposure. New York Penal Law Section 265.01 makes it a class A misdemeanor to possess a firearm without a license, and there is no “I just found it” exception.6New York State Senate. New York Penal Law 265.01 – Criminal Possession of a Weapon in the Fourth Degree The moment a firearm leaves the water and enters your hands, you technically possess it.
The law provides a narrow safe harbor: you’re exempt from prosecution if you voluntarily surrender the weapon to the state police, your county sheriff, or your local police department, and follow whatever conditions they set.7New York State Senate. New York Penal Law 265.20 – Exemptions The safest move is to call 911 from the spot where you pulled it up. Don’t clean it. Don’t take it home. Don’t drive across town with it in your trunk. Many recovered firearms are tied to open investigations, and police will want to trace the serial number.
Ordnance and Old Artifacts
Military munitions have surfaced in New York waters, particularly near former military installations. If you pull up anything that looks like a grenade, shell, or explosive, back away without disturbing it further and call 911. Don’t move it, open it, or try to clean it.
Artifacts are their own category. On federal land, the Archaeological Resources Protection Act makes it a crime to excavate or remove any archaeological resource without a permit, and anything at least 100 years old qualifies. A first offense carries up to a $10,000 fine and one year in prison. If the item’s value or the cost of repair exceeds $500, the penalty rises to $20,000 and two years. Repeat offenders face up to $100,000 and five years.8Office of the Law Revision Counsel. 16 USC 470ee – Prohibited Acts and Criminal Penalties On state land, Section 233 applies regardless of age.5The New York State Museum. State Land Permits On private land, artifacts generally belong to the landowner. If you’re unsure, photograph the item where it lies, note the coordinates, and contact the New York State Historic Preservation Office. Reporting a find won’t get you in trouble; pocketing one might.
Anything Else Worth $20 or More
New York’s Personal Property Law groups lost, mislaid, abandoned, and treasure trove items together as “lost property.”9New York State Senate. New York Consolidated Laws, Personal Property Law – PEP 251 Definitions Pull up anything worth $20 or more and you’re required to either return it to the owner or report the find and deposit it with police within 10 days. Ignoring that obligation is a misdemeanor punishable by a fine of up to $100, up to six months in jail, or both.10New York State Senate. New York Personal Property Law 252 – Found Property The threshold is low enough to cover most jewelry, tools, and safes that come out of the water.
Before You Go
A short phone call can save you a misdemeanor. Confirm who owns and manages the water and the land you’ll stand on. For state land, check with the managing agency and the New York State Museum’s permit office. For city or county waterways, call the local parks department or clerk. In New York City, apply for a metal detecting permit through the Parks Department. For any spot near a dam, lock, bridge, or utility crossing, assume it’s restricted until you hear otherwise.
Bring your phone so you can report a firearm or suspected ordnance from where you found it. Bring trash bags for what you’ll inevitably haul up. And treat any historically interesting object from state land the same way you’d treat a gun: don’t take it home.