Where to Metal Detect in New Hampshire
New Hampshire has 987 old and unincorporated settlement locations in the U.S. federal names database - 11 of them marked historical in GNIS - and 23 named beaches in public records. Every one is plotted on the free WhereToDetect map, along with a land-status check for any spot you tap.
Open the free New Hampshire detecting map →New Hampshire state park rules
Status: metal detecting is restricted to designated areas (often beaches) in state parks.
NH Code of Administrative Rules Res 7301.19 bars metal detectors on state park (DRED) properties generally, but permits them along ocean/lake beach shorelines, at athletic fields and playgrounds, and within 25 feet of picnic tables/pavilions unless posted otherwise; detecting is expressly banned at state historic sites/natural areas and at Odiorne Point State Park.
Source: official state rule (summary from the July 2026 registry; verify current rules before you go).
Check the specific property before detecting
A federal land overlay is a starting point, not permission. Check the managing office for the specific parcel, closures, detecting rules and restrictions on digging or removing objects. Never detect on archaeological sites or remove protected artifacts. ARPA protects archaeological resources over 100 years old on federal and Indian lands; other protections may apply to newer objects. National Park restrictions and state and local rules also apply. See our legal guidance.
Getting permission on private land
Use the county parcel office to identify the owner, ask before entering, and agree on where you may search and how finds will be handled. In the map, tap a location, check land information and save the spot. Use Asks to record permission requests and the letter tool to prepare an owner request. A saved spot or generated letter does not grant permission.
Using the map for research
- Open the state map and use Layers to show settlement records or beaches. Zoom in to explore individual markers.
- Compare historical maps with the current landscape. A GNIS historical designation does not establish that a location is abandoned or accessible.
- Check ownership and current rules before visiting. Named beaches are database records, not a verified list of public swimming or detecting areas.
FAQ
Metal detecting is restricted to designated areas (often beaches) in state parks. NH Code of Administrative Rules Res 7301.19 bars metal detectors on state park (DRED) properties generally, but permits them along ocean/lake beach shorelines, at athletic fields and playgrounds, and within 25 feet of picnic tables/pavilions unless posted otherwise; detecting is expressly banned at state historic sites/natural areas and at Odiorne Point State Park. See the official rule for current details.
No. Settlement and beach records are research leads, not public-access or detecting permission. Check the property manager, current restrictions and ownership before visiting. An empty federal-land result does not establish private ownership.
New Hampshire has 987 old and unincorporated settlement locations in federal records, including 11 marked historical in GNIS, plus 23 named public-record beaches. Old settlement sites, early schools and churches, old fairgrounds, and storm-scoured beaches are classic productive ground - with permission.
Data: USGS GNIS (public domain) · state rules from official agency sources · informational only, not legal advice. Always confirm rules with the managing agency and get landowner permission. Protected sites, artifacts over 100 years old, and human remains are off-limits under federal & state law.