Metal Detecting in Idaho

1. The rule, in full

Idaho – IDAPA 26.01.20.175.11

Read from the Idaho Administrative Code at adminrules.idaho.gov, IDAPA 26.01.20 "Rules Governing the Administration of Park and Recreation Areas and Facilities", the current rule PDF, parsed locally. Re-read 4 Oct 2026 and both quotations below are exact. Section 175 is headed "Public Behavior" and subsection 11 carries the effective-date marker (3-18-22).

Operative text, IDAPA 26.01.20.175.11:

"Non-traditional Recreational Activities. Non-traditional recreational activities such as model airplane and glider operations, geo-caching, gold panning, drone operation, and metal detecting may be authorized by the park or program manager if such activities do not interfere with traditional uses of the park and are consistent with preservation of park resources."

Scope, IDAPA 26.01.20.001:

"These rules apply to any persons visiting a state park or recreation area or making a reservation to occupy an Idaho Department of Parks and Recreation area or facility."

Determination, IDAPA 26.01.20.175.11: Department of Parks and Recreation land only. Does NOT reach municipal parks. Idaho's own public-lands excavation statute is a separate instrument and reaches further; see below.

Statewide: Idaho Code 67-4118 to 67-4121

Read from the Idaho Statutes, Title 67 Chapter 41 PDF published by the Idaho Legislature, 12 Oct 2026. The Legislature's per-section HTML pages return a site shell with no statute text and were not used.

The permit, Idaho Code 67-4120:

"A permit shall first be obtained from the board of trustees of the Idaho State Historical Society before any excavation in or on any prehistoric site, ruins, pictographs, petroglyphs, or any other ancient marking or writing, or in or on any archaeological or vertebrate paleontological deposit or site on any public lands in Idaho. Such permits shall be issued only to applicants who are qualified by experience or professional training to conduct such excavations in an approved scientific manner."

This is Idaho's own answer, and it is the one to cite. Articles about Idaho reach for ARPA and the National Historic Preservation Act to describe what happens on public land here. Idaho has its own provision covering public lands in Idaho, and it is narrower and more concrete than either: a permit from the State Historical Society's board of trustees, available only to the professionally qualified.

A limit worth stating rather than glossing: "public lands in Idaho" is not defined in Title 67 Chapter 41. The phrase occurs three times in the chapter and never as a definition, so how far it reaches is not settled by the chapter itself.

The purpose section, Idaho Code 67-4119:

"The purpose of this act is to protect archaeological and vertebrate paleontological sites and resources on public lands in the state of Idaho and to ensure their safety and availability for scientific research."

Taking a find out of the state, Idaho Code 67-4121(1):

"No person shall remove from the state of Idaho any part of any such ruins, pictographs, petroglyphs, relics, deposits, objects, specimens, or artifacts recovered from any such archaeological or vertebrate paleontological site or deposit without first obtaining the consent of the board of trustees of the Idaho state historical society. Said board of trustees may require, as a condition to such consent, that such portion … shall become or remain the property of the state of Idaho."

The penalty, Idaho Code 67-4118:

"Any person who shall in any way wilfully, intentionally, or recklessly damage, molest, disturb, destroy, or harm any archaeological or any historic site, or who shall remove, destroy, obliterate, or in any way damage any sign, marker, or monument thereon … shall be guilty of a misdemeanor and shall also be liable civilly to the state of Idaho by way of penalty in a sum equal to triple the amount of the cost and expense of repairing, replacing, and reconstructing said site…"

A scope question the chapter does not settle. On its face 67-4118 says "any archaeological or any historic site" with no land qualifier, while the purpose section speaks of public lands. They are different enactments within the same chapter – 67-4118 added 1957, 67-4119 and 67-4120 added 1963 – so whether 67-4118 reaches private land is genuinely open on the text.

Graves and burial artifacts: Idaho Code 27-502

Read from the Idaho Statutes, Title 27 Chapter 5 PDF published by the Idaho Legislature, 12 Oct 2026.

"(1) Except as provided in section 27-503, Idaho Code, no person shall willfully remove, mutilate, deface, injure or destroy any cairn or grave. …
(2) No person or entity shall: (a) Possess, sell, purchase, or lease any artifacts or any human remains taken from a cairn, grave, or burial site in a manner other than that authorized under section 27-503, Idaho Code…"

This section has no land qualifier at all, and (2)(a) reaches mere possession.

Endowment land: the rule is a framework and the restriction is policy

IDAPA 20.05.01, Rules Pertaining to the Recreational use of Endowment Land, read from the Idaho Administrative Code 12 Oct 2026:

"These rules govern the closure, restriction, regulation, or prohibition of certain regulated recreational uses on Idaho endowment lands that are subject to a warning ticket, citation, or misdemeanor pursuant to Idaho Code Section 58-156."

Express negative: across 6,517 characters, IDAPA 20.05.01 contains zero occurrences of "metal detect", "artifact", "archaeolog", "paleontolog", "collect", "dig" or "excavat". It is a framework for making closures, not a set of substantive prohibitions.

The substantive restriction is policy, not code. The Idaho Department of Lands' Recreational Use of State Endowment Lands policy, read 12 Oct 2026:

"Examples of activities not considered general recreation are cutting or gathering firewood, using backcountry aircraft, collecting valuable rocks or minerals, exploring for minerals, and collecting or disturbing archaeological, historical, or paleontological sites (fossils, artifacts, dinosaur bones, old buildings, etc.). These activities require separate authorization from IDL and may require authorization from other local, state, or federal agencies."

"Metal detect" does not occur in the policy either. This is a policy that changes when somebody decides to change it, with no register that would announce it, so it carries a read date and nothing stronger.

Unusual framing worth preserving: Idaho does not prohibit and then carve out an exception. It treats detecting as a "non-traditional recreational activity" that a park manager may authorize. The default is neither yes nor no, which makes permit_required the closest controlled value but an imperfect fit.

For Boise specifically – the city's own $13 metal detecting permit is a municipal scheme and sits on the city row, not here.

Source: adminrules.idaho.gov 26/260120.pdf, parsed locally. Checked 19 Sep 2026.

2. Cities in Idaho that publish a rule

3 cities in Idaho publish a rule we can quote, out of 23 checked.

Of the 23 checked, 9 had pages on the city’s own site that we found and read. For the other 14 we could not locate a municipal source, so nothing is claimed about them either way.

3. County rules

No county check has been run for Idaho. That is not a finding that Idaho’s counties publish no rules. It means the question was never asked here, and this directory does not assert an answer it has not looked for. The county sweep covered 21 states; Idaho was not one of them.

4. Cities checked - no published rule

20 cities in Idaho were checked and have no published rule on this page. Of those, 20 returned no rule, and 0 did return something that has not been published – mostly rules that turned out to govern county land, which are in the county section above. A city here is not a city where detecting is allowed. It is a city whose own published material did not answer the question.

All 20 were checked on 13 September 2026, in one sweep, so that date applies to every row. 1 has no municipal site recorded and is shown without a link rather than dropped, because dropping them would understate what was checked.

5. Clubs in Idaho

17 in our directory for Idaho - 17 verified against their own website or group, 0 we could not verify. Verified means we opened the link and read it. All Idaho clubs on the club directory, with meeting nights and contacts where we have them.

• Caribou Chapter GPAA - Facebook group · Blackfoot · verified
• Hells Canyon Gem Club - hellscanyongemclub.com · Lewiston · verified
• Idaho Gem Club - idahogemclub.com · Facebook group · Boise · verified
• Idaho Gold Mining - idahogoldmining.com · Facebook page · Treasure Valley Area · verified
• Idaho Gold Prospecting - Facebook page · verified
• Idaho Gold Prospectors Association - idahogoldprospectors.com · Facebook group · verified
• Magic Valley Gem Club - magicvalleygemclub.org · Twin Falls · verified
• Northwest Gold Prospectors (Parma GPAA) - Facebook page · Parma · verified
• Northwest gold prospectors association Clearwater chapter - Facebook group · verified
• Northwest Gold Prospector’s Association - Facebook group · Rathdrum · verified
• Owyhee Gem and Mineral Society - owyheerocks.com · Caldwell · verified
• Richie Rich’s Mining Supplies - Facebook page · Treasure Valley Area · verified
• Spud Diggers - Facebook page · Boise · verified
• Tough Run Metal Detecting - toughrunmetaldetecting.com · Facebook page · Mountain Home · verified
• Treasure Valley Gold Prospectors - Facebook page · Treasure Valley Area · verified
• Treasure Valley Metal Detecting Club - Facebook group · Treasure Valley Area · verified
• Twin Falls Snake River Chapter GPAA - Facebook group · Twin Falls · verified

6. Land this page does not cover

This page answers for Idaho state land, and for city and county land where the state rule reaches it. Several other kinds of ground are not covered here, and naming them is more honest than letting a reader assume the page is complete.

Tribal land. This directory does not cover it, and will not.

There are 574 federally recognised tribal nations. Each is a sovereign jurisdiction with its own law, its own permitting, its own enforcement and its own cultural-resource provisions, and none of them is answered by a state's code or by any federal rule quoted on these pages. A one-line instruction to "get tribal permission" would be worse than this paragraph, because it implies one process and one authority where there are 574. If you are on or near tribal land, the governing law is that nation's, and the place to ask is that nation's own offices. Nothing on this page applies there.

BLM land is covered, partly, in its own place. The Bureau of Land Management holds about 245 million acres and the federal rule names metal detectors and permits them, which is the opposite of the national park rule. See BLM land: the detector is named, and permitted. That page covers the base regulation; it does not yet cover the supplementary rules individual BLM State Directors issue for particular field offices.

Named and not examined. These are recorded so their absence is visible rather than silent. No claim is made about any of them:

• Military withdrawn land, including ranges and training areas.
• Bureau of Reclamation land, which surrounds a great many reservoirs.
• Water district and irrigation district land.
• Wilderness, Wilderness Study Areas and National Conservation Areas, which carry designations of their own. And one general point about signs. The commonest piece of reasoning in this subject is "there was no sign, so it was allowed." Arizona's State Land Department answers it in writing, in condition 2 of its own Recreational Permit terms:

"You will comply with all laws, rules, regulations and ordinances. Posting is not required for these provisions to be enforceable."

That is Arizona's sentence about Arizona's provisions and this directory does not present it as the law of any other state. But the proposition it states is the one to carry: nothing read for this project makes a published rule's enforceability depend on a sign at the boundary. Where posting does matter, a specific provision says so, and that provision is quoted on the page where it occurs.