Lewis & Clark County, MT Mining Claims & Land Ownership Map
Current BLM claim data, land ownership layers, and rockhounding-ready backcountry navigation for Lewis & Clark County, MT — built for the field.
Lewis and Clark County occupies a pivotal position in Montana mining history, anchored by the state capital of Helena, Last Chance Gulch, and the rugged slopes of the Continental Divide. Sparked by four prospectors ("the Four Georgians") who struck rich placer gold in Last Chance Gulch in 1864, the county developed into one of Montana's highest-producing gold regions. Modern panners, metal detectorists, and sapphire hunters explore mountain drainages and river gravels across public lands managed by the Helena-Lewis and Clark National Forest and the BLM Butte Field Office.
Geologically, Lewis and Clark County is defined by the Boulder Batholith, intrusive monzonite stocks, and complex faulting along the Helena salient. Hydrothermal solutions injected rich gold-bearing quartz fissure veins and telluride orebodies into Precambrian slates and Paleozoic limestones, fueling famous hard-rock districts like Marysville and Unionville. Fluvial processes weathered these lodes, sweeping heavy placer gold into Last Chance Gulch, Seven-Up Pete Gulch, and Prickly Pear Creek. Along the Missouri River gravels near Eldorado Bar, rockhounds hunt for Montana sapphires, agates, and jasper.
Navigating Lewis and Clark County prospecting demands precise boundary tracking. Historic gold gulches and sapphire river bars feature dense concentrations of active unpatented claims, interlocking with private patented holdings and municipal reserves. Utilizing an active Lewis and Clark County mining claims map enables prospectors and rockhounds to check live federal records, verify open public domain land, and navigate backcountry access routes legally.
921
Active Lewis & Clark County, MT Claims
12,293
Historical Lewis & Clark County, MT Claims
625
Lewis & Clark County, MT Rockhound Hotspots
13,839
Total Lewis & Clark County, MT Claims & Hotspots
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Save any map area while you have cell service, then navigate active BLM mining claims, land ownership boundaries, and optional layers like elevation contours, roads, and creeks — with zero connectivity out in the field. Offline downloads are included on every paid plan. See plans below →
Official Prospecting Resources for Lewis & Clark County, MT
Plans
Basic
$0/mo
Local Miner
$29.99/yr
Everything in Free, plus:
Adventure Miner
$49.99/yr
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Rockhound Enthusiast
$29.99/yr
Gem & crystal hunters, Midwest/East users — everything in Free, plus:
Pro Prospector
$99.99/yr
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Staked Maps isn't crowd-sourced guesswork. Active and historical claim boundaries are parsed directly from the Bureau of Land Management's own MLRS/LR2000 case-recordation system — the same records BLM state offices use internally — and kept in sync with our database on a regular schedule. Rockhound Hotspots draw from the USGS Mineral Resources Data System (MRDS), cross-referenced by material so you can see exactly what's been found at a given site. For legal filings, always confirm current status directly with your BLM state office of record; Staked Maps is a research and navigation tool, not a substitute for the official record.
Directly from the Bureau of Land Management's official MLRS/LR2000 case-recordation records, synced into our database on a regular schedule — not scraped or crowd-sourced.
Yes. The free tier gives you the interactive claims map, land ownership overlays, and basemap layers for your current state, auto-detected via GPS — no subscription required. Paid plans add more states plus premium data like full legal descriptions, historical claims, offline downloads, and Rockhound Hotspots.
Active claims currently have valid, in-good-standing filings with the BLM. Historical claims are expired or closed filings — still useful for understanding an area's mining history and past activity.
Free users can search by county. Paid plans add search by claim serial number, plus each claim's full legal (aliquot) description and BLM records link.
A premium map layer of known mineral and gem collecting sites — sourced from USGS records and labeled by material where available (e.g. turquoise, opal, jasper) — for rockhounds looking for their next find.
Staked Maps currently tracks 921 active and 12,293 historical mining claims in Lewis & Clark County, MT, plus 625 Rockhound Hotspots — synced on a regular schedule directly from the BLM's own MLRS records.
Yes — the live map covers all of Montana, not just Lewis & Clark County. Other Montana counties with a dedicated page: Madison County, Granite County, Broadwater County and Jefferson County.
Lewis and Clark County Clerk & Recorder is Lewis & Clark County, MT's primary office for filing and researching mining claims — see the Official Filing & Information Links section above for the direct link and more resources.
Information hosted on Staked Maps is compiled from publicly available data streams provided by the Bureau of Land Management (BLM) and relevant state geographic clearinghouses. Staked Maps accepts no liability for the content of this geospatial data, or for the consequences of any real-world exploration, land entry, or staking actions taken on the basis of the information provided via this application interface.
Staked Maps makes no warranty, expressed or implied, including the warranties of merchantability and fitness for a particular purpose, nor assumes any legal liability or responsibility for the pinpoint accuracy, reliability, completeness, latency, or programmatic utility of these geospatial data layers, or for the improper interpretation of these data grids.
These mapping layers and related graphics are visual convenience aids only; they are not legal documents and must never be used as such. The data may not be used to legally determine title, mineral ownership, valid description boundaries, jurisdictional authorities, or land restrictions in place on public or private land. Natural backcountry hazards may or may not be depicted on topographies, and land users are strictly mandated to exercise caution. Federal records are dynamic and change constantly. The end-user is exclusively responsible for validating current land classifications with local BLM field offices and managing compliance accordingly.