The federal record (USGS MRDS) lists 281 gold occurrences in Lewis and Clark County — 152 of them past or active producers. Below is that record, readable: the documented sites, and the live map that puts claims, creeks, roads and geology under every one of them.
Open the Lewis and Clark County gold map → Membership — first week free
Producers first, then prospects and occurrences — each links into the live map of that exact ground:
| Site | Status | Type |
|---|---|---|
| Helena Placers | Past producer | placer |
| Lincoln Gulch District | Past producer | placer |
| Ajax Mine | Past producer | — |
| All Placer | Past producer | placer |
| American Boy Mine | Past producer | — |
| American Flag Mine | Past producer | — |
| Anderson Prospect | Past producer | — |
| Andrew Brown | Past producer | — |
| Baldy Mountain Claims | Past producer | — |
| Bell Boy Mine | Past producer | — |
| Betsy Ross Mine | Past producer | — |
| Black Watch | Past producer | — |
| Blackfoot Mine | Producer | — |
| Blue Cloud Mining Co. Property | Producer | placer |
| Bonanza Mine | Past producer | — |
| Buffalo Gulch | Past producer | placer |
| Calliope Mine | Past producer | — |
| Calumet Mine | Past producer | — |
| Canyon Creek | Past producer | placer |
| Canyon Creek Placer | Past producer | placer |
| Cave Gulch | Past producer | placer |
| China | Past producer | — |
| Clark Gulch | Past producer | placer |
| Columbia Mine | Past producer | — |
| Cotter Mine | Past producer | — |
| Cottonwood Creek and Gravel Range | Past producer | placer |
| Cottonwood Creek and Gravel Range Placer | Past producer | placer |
| Crown Mine | Past producer | — |
| Dana's Bar | Past producer | placer |
| Dert Gulch Mine | Past producer | — |
Showing the top 30 of 281 recorded gold occurrences — every one is on the live map.
The free map shows every dot above. Membership opens the layers that turn dots into a plan — favorability at working zoom, active claims, land ownership, geology and the creeks that drain the known sources. The first 7 days are free.