South Dakota requires you to get written authorization from the park’s site manager before you detect on Game, Fish & Parks land — and all finds must be inspected, and GFP may retain items of historical, archaeological or cultural significance. Tools and dig depth are capped. Here’s the detail.
Can I detect in South Dakota?
The short answer for each kind of land. Tap a card for the detail and the rule’s own words.
- State parksPermit requiredrecreational detecting only on designated swimming or boating beachesChecked against the source Oct 8, 2026
- State & public landPermit requiredGFP-owned, leased, managed or controlled landChecked against the source Oct 8, 2026
- BeachesPermit requireddesignated swimming or boating beaches on GFP landChecked against the source Oct 8, 2026
- City / county parksNo verdict yetSource check pending
- National Park Service landProhibitedChecked against the source Oct 8, 2026
- Army Corps lakesDesignated areasAsk the project office for the current policy and designated areas.Checked against the source Oct 8, 2026
Open in many areas without a permitPermit, registration, or designated beaches onlyProhibited or effectively closed
The rules, land by land
State parks
Permit requiredUsing a metal detector on any GFP land needs written authorization from the site manager, and permits are granted only for recreational detecting on designated swimming or boating beaches, lost-item searches, or permitted archaeologists.
- written authorization from the site manager or other department representative
- recreational detecting only on designated swimming or boating beaches
- lost-item search: describe the item to the site manager; no digging outside a designated swimming beach
- archaeologists need a State Archaeologist permit first
- tell staff before detecting (stop at the office or call a day ahead)
- probes max 6 in long, 1 in wide, 1/4 in thick; sand scoop or sieve max 10 in diameter
- holes max 6 in deep and restored
- all finds brought to the office for inspection; GFP may keep anything of historical, archaeological or cultural value
What the rule says
“No person may use a metal detector on lands owned, leased, managed, or controlled by the department without written authorization from the site manager or other department representative.”
Digging
Permit requiredDisturbing any earth or historic relic on GFP land needs written permission; a metal-detector permit allows digging only with a small probe or sand scoop, holes no deeper than 6 inches and restored, and no digging at all on a lost-item search outside a designated swimming beach.
- written permission from the GFP secretary or a designated agent (ARSD 41:03:01:05); the metal-detector permit carries the digging conditions
- probes max 6 in long, 1 in wide, 1/4 in thick; sand scoop or sieve max 10 in diameter
- holes max 6 in deep; restore each excavation before starting another or leaving
- lost-item search outside a designated swimming beach: no digging (use 3)
- applies to all land GFP owns or leases, not only parks
What the rule says
“A person may not destroy, damage, or remove a living or dead tree, shrub, or vegetation; disturb any earth, rocks, minerals, natural formations, or historic relics; ... located on lands owned or leased by the department without written permission from the secretary or a designated agent.”
Keeping finds
Varies by siteEvery find made with a detector on GFP land goes to the park office for inspection, and GFP may keep anything of historical, archaeological or cultural value; the sources do not say what happens to other finds.
- all found items brought to the office for inspection by department staff
- the department retains the right to keep anything of historical, archaeological or cultural value
- removing historic relics without written permission is barred (ARSD 41:03:01:05)
What the rule says
“All found items will be brought to the office for inspection by department staff. The department retains the right to keep any thing of historical, archeological or culturally significant value.”
State & public land
Permit requiredThe written-authorization rule covers all land GFP owns, leases or manages, not only parks; SDCL 1-20 separately requires a State Historical Society permit for archaeological field investigation on any state land.
- GFP-owned, leased, managed or controlled land
- same permit limits as state parks
- other state land (for example school and public lands) is not addressed by the cited sources
What the rule says
“No person may use a metal detector on lands owned, leased, managed, or controlled by the department without written authorization from the site manager or other department representative.”
Digging
Research permits onlyField investigation, which SDCL 1-20-18 defines as surveying, digging or removing objects to study traces of human culture, on state land needs a State Historical Society permit, and those permits go only to qualified museums, universities and similar institutions.
- land owned or controlled by the state, its agencies, departments and institutions, and designated state archaeological landmarks
- permits only to institutions the state archaeologist deems qualified (SDCL 1-20-32)
- 'field investigations' include going on a site with that intent (SDCL 1-20-18(2))
- Class 2 misdemeanor plus forfeiture of all specimens, photographs and records (SDCL 1-20-35)
What the rule says
“No person may conduct field investigation activities on any land owned or controlled by the state, its agencies, departments, and institutions, or within the boundaries of any designated state archaeological landmark, without first obtaining a permit from the State Historical Society Board of Trustees.”
Keeping finds
ProhibitedArchaeological information and objects from South Dakota state lands remain state property. Taking or altering a specimen on state land without a State Historical Society permit is a Class 2 misdemeanor with forfeiture.
- archaeological and scientific objects (specimens as defined in SDCL 1-20-18)
- the state's exclusive right of field investigation covers land of the state, its agencies, departments, institutions and political subdivisions (SDCL 1-20-25)
- the misdemeanor in SDCL 1-20-35 is worded for state lands and designated state archaeological register sites
- exploration permits go only to qualified institutions approved by the state archaeologist (SDCL 1-20-32)
- Class 2 misdemeanor plus forfeiture of all specimens (SDCL 1-20-35)
What the rule says
“All such information and objects deriving from state lands shall remain the property of the state and be utilized for scientific or public educational purposes.”
Beaches
Permit requiredSouth Dakota is landlocked; recreational detecting on GFP land is limited to designated swimming or boating beaches, and still needs the site manager's written authorization.
- designated swimming or boating beaches on GFP land
- written authorization from the site manager
- same tool, depth and find-inspection conditions as state parks
What the rule says
“1) Recreational metal detecting only on designated swimming or boating beaches.”
City / county parks
No verdict yetNo detector rule was confirmed for city or county parks in South Dakota; ask the local park manager.
National Park Service land
ProhibitedPossessing or using a metal detector is prohibited in National Park Service areas.
- Exceptions include a device broken down and packed to prevent use, navigation and safety equipment, and equipment used for authorized scientific, mining or administrative activities.
What the rule says
“Possessing or using a mineral or metal detector, magnetometer, side scan sonar, other metal detecting device, or subbottom profiler.”
Army Corps lakes
Designated areasArmy Corps projects allow detector use on designated beaches or previously disturbed areas unless the District Commander closes them to protect archaeological, historical or paleontological resources.
- Ask the project office for the current policy and designated areas.
- Found items follow 36 CFR 327.15 and 327.16, except non-identifiable items such as coins worth less than $25 (327.14(d)).
What the rule says
“The use of metal detectors is permitted on designated beaches or other previously disturbed areas unless prohibited by the District Commander for reasons of protection of archaeological, historical or paleontological resources.”
Even where detecting is allowed, archaeological and historic sites are protected, and you must fill every hole and follow posted rules. Always confirm the current rule with the land manager.
Metal detecting in South Dakota state parks
South Dakota Game, Fish & Parks (GFP) requires prior written authorization from the site manager to use a detector on GFP land (applications go to the Division of Parks in Pierre). The permit form lists three uses: recreational detecting on designated swimming or boating beaches, lost-item searches, and archaeologists holding a State Archaeologist permit. Tools are capped at a probe (max 6″×1″×¼″) or a sand scoop/sieve (max 10″ diameter), holes must be 6 inches or less and restored, and all finds are inspected at the park office — GFP may retain items of historical, archaeological, or cultural significance.
South Dakota’s antiquities law
SDCL Chapter 1-20 reserves to the state the exclusive right of field investigation on land of the state, its agencies, institutions and political subdivisions, and objects from state lands remain state property (1-20-25). Field investigation on state land needs a permit from the State Historical Society Board of Trustees (1-20-35), and those permits go only to qualified institutions such as museums and universities (1-20-32). Unpermitted field investigation, or taking a specimen from state land, is a Class 2 misdemeanor with forfeiture (1-20-35).
Public land, lakes & federal
Inland designated swimming or boating beaches on GFP land still require GFP written authorization. At National Park Service units, recreational detecting is prohibited, subject to the possession and authorized-use exceptions in 36 CFR 2.1(a)(7). Army Corps of Engineers reservoirs allow detectors on designated beaches and previously disturbed areas unless the District Commander closes them (36 CFR 327.14(d)). We haven’t sourced city and county park rules. See our national guide.
Sources
Official and statutory sources this page is based on (source check: October 8, 2026):
- South Dakota GFP — Metal Detector policy
- SDCL 1-20 (Archaeological Exploration)
- SD State Historical Society — archaeology laws
- SD GFP — Metal Detector Permit (paper application, PDF)
- SDCL 1-20-25 (Exclusive right — investigation on public lands — property of state)
- SDCL 1-20-35 (Unauthorized investigation as misdemeanor — forfeiture)
- SDCL 1-20-18 (Definitions)
- SDCL 1-20-32 (Issuance of exploration permits — qualifications of permittees)
- 36 CFR §2.1, Preservation of natural, cultural and archeological resources (eCFR)
- 36 CFR §327.14, Public property (Army Corps water resources projects) (eCFR)
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 revisit your saved hunt records. LuckyFind does not verify land access or grant detecting permission. Free for iPhone and Android.
New to LuckyFind? Follow the first-hunt checklist, then learn how to record a hunt and add finds.
Frequently Asked Questions
- Can you metal detect in a South Dakota state park?
- Only with prior written authorization from GFP; without it, detecting on any GFP-controlled land is prohibited. The permit form lists three uses: designated swimming or boating beaches, lost-item searches, and archaeologists with a State Archaeologist permit.
- Can you keep what you find in South Dakota?
- All found items must be brought to the park office for inspection, and GFP retains the right to keep anything of historical, archaeological, or cultural significance. The rules don’t say what happens to other finds, so ask at the office.
- What tools can you dig with in South Dakota?
- Only a small probe (max 6″×1″×¼″) or a sand scoop/sieve (max 10″ diameter), with holes no deeper than 6 inches, and every hole must be returned to its original condition.
Find more, remember where
Download LuckyFind — free for iPhone and Android — to track your routes, log your finds, and keep your permitted spots organized.
