Map

Maps

Prospecting maps

This is a collection of maps we put together to assist you in finding a mining claim. If you want more detailed information you can write to us at info@SierraRivers.com and we can do a custom, online map for a specific area, or topic.

Legal Dredging

Good News! Dredging is legal everywhere in California where there is no gold, check out the map, green is legal, yellow is prohibited. Thanks California.


Historical Faults

Gold deposits follow faults. If you're looking for the source of gold, hardrock, then this fault map provides you with the locations of historical (not active) fault zones for the U.S.


Gold Locations in US

This interactive map provides all the known gold sites for the entire US, including Alaska. The data is drawn from the USGS MRDS database. Obviously not the end all, be all, of knowledge, but if you're wondering whether there is gold near where you live, this is a good start.

Portfolio Maps

Geologic portfolios for California and Nevada. If you're looking for the channel, this is a good place to start.


The California Motherlode

Map of active and historic lode claims in California. Paints a picture of the lode vein sources, also known as the Motherlode.

Fire Maps

In our opinion the best online resource for staying up to date with fires anywhere in the west. Uses thermal imagery to show you the leading edge of the fire.

Wilderness and Critical Habitat

If you're thinking about looking for new mining areas then you should bookmark this map. Wilderness areas are generally withdrawn from mineral entry meaning you can't file a new claim there. If your claim is in a critical habitat area then obtaining a permit would be very difficult (if not impossible). Under California dredging regulations no dredging is allowed in critical habitat, so know whether the area you are in has critical habitat - it's important.