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Metal Detecting Laws in Minnesota

Last verified July 2026 ~6 min read
An old topographic map used to research where to metal detect
Please read: this is general information for detectorists, not legal advice. Rules change and vary by individual park, city, and agency. We cite the official sources below, but always confirm the current rule with the specific land manager before you detect — and when in doubt, ask first. Last verified July 2026.

Minnesota effectively closes its state parks to recreational detecting: the rule only allows searching for a specifically lost item, with written permission and supervision. The realistic option is certain county parks with a permit. Here’s the detail.

At a glance

State parksRestricted
Detecting is limited to locating a specifically identified lost personal item, with prior written permission from and supervision by the park manager; the DNR summarizes the rule as prohibiting detector use.
State & public landRestricted
The Minnesota Field Archaeology Act (Minn. Stat. §§138.31–138.42) requires a State Archaeologist license for field archaeology on state land; the Private Cemeteries Act bars disturbing burials.
Public land & lakesDepends
No ocean coast; Lake Superior and inland lakes. Some county parks allow detecting only in designated swimming-beach sand with a permit.
Local & federalDepends
Rules vary widely; Dakota County requires a free annual permit for two designated beaches.

*Even where detecting is allowed, archaeological/historic sites are protected and you must fill holes and follow posted rules. Always confirm the current rule with the specific land manager.

Old silver coins recovered from the ground
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Metal detecting in Minnesota state parks

Minnesota Rule 6100.0900 subpart 2(F) allows detector use only to locate a specifically identified lost personal item, and only with prior written permission from and supervision by the park manager (plus scientific research under a commissioner permit and field-archaeology license). The DNR summarizes this as “use of metal detectors is prohibited” — there’s no recreational treasure-hunting allowance.

Minnesota’s antiquities law

The Minnesota Field Archaeology Act (Minn. Stat. §§138.31–138.42) requires a State Archaeologist license for field archaeology on state land or state sites, and the Private Cemeteries Act (§307.08) prohibits disturbing human burials.

Public land, lakes & local rules

Minnesota has no ocean coast; Lake Superior and inland lakes provide the shoreline, and within state parks Rule 6100.0900 governs. Some county parks are more permissive but narrow — Dakota County, for example, allows detecting only in the sand of two designated swimming beaches (Schulze Lake and Lake Byllesby) with a free annual permit under Ordinance 107, with digging limited to 6 inches and holes refilled. Always confirm locally. See our national guide.

Sources

Official and statutory sources this page is based on (last verified July 2026):

Keep your permitted Minnesota spots organized

Once you’ve confirmed where you’re allowed to hunt, LuckyFind helps you make the most of it — track your route on the map, log each find with its location, and remember exactly which spots you have permission for. Free for iPhone and Android.

Frequently Asked Questions

Can you metal detect for fun in a Minnesota state park?
No. Under Minn. Rule 6100.0900 subpart 2(F), detecting is limited to locating a specifically identified lost personal item, only with prior written permission and supervision by the park manager. The DNR summarizes the rule as prohibiting detector use.
What if you lost your ring in a Minnesota state park?
You may search, but only with advance written permission from the park manager, who must supervise, since the rule allows detecting only for a specifically identified lost item. Contact the park office first.
Are Minnesota county or city parks more permissive?
Sometimes, but rules vary and many restrict it. Dakota County, for example, allows detecting only in the sand of two designated swimming beaches with a free annual permit under Ordinance 107. Always confirm with the local jurisdiction.