| Layer | What it shows |
|---|---|
| Documented gold | USGS mineral records, old workings and placer ground |
| Claims & land status | BLM mining claims and who manages the surface |
| Water | Live USGS gauges and the months each creek runs lowest |
| Fossil ground | Published localities, colour-coded by whether you may collect |
| Legends | 4 mapped for Maryland |
A marker is a public record, not permission. Check ownership, active claims and the local rules first — the map shows all three.
Open the map