American River: Zircon Rockhounding in Idaho County, Idaho

Updated June 2026

American River is a mapped rockhounding spot in Idaho County, Idaho. Reported finds include zircon. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Idaho County
State: Idaho
Nearest road: Forest Service Road 1809
Postcode: 83525
Coordinates: 45.84117, -115.41529

Geology at American River

This spot sits on Alluvial deposits, mapped as sand and gravel that formed within roughly the last 3 million years. Loose deposits like these are float-collecting ground: erosion keeps moving durable rocks and minerals into gravel bars, cutbanks, and washes.

Mapped unit: Alluvial deposits
Age: 3 Ma to present (Pleistocene to Holocene)
Rock types: sand and gravel
Elevation: 4,110 ft

Geologic mapping via Macrostrat and the underlying state geological survey maps (CC BY 4.0). Bedrock at the surface can vary within a mapped unit.

Best time to visit American River

Best months: March to October. Typical highs run 82°F in midsummer and 35°F in midwinter, with winter lows near 14°F.

Climate normals: NOAA 1991-2020 monthlies, ELK CITY 1NE station (2 mi away).

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.

Sources & verification

Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.

State guidance last verified: April 1, 2026

Idaho Panhandle National Forests — Emerald Creek
Idaho Geological Survey
Spencer Opal Mines (fee-dig operator)
Community submissions reviewed against published agency rules

Found at American River

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Zircon Encyclopedia →

Nearby rockhounding spots

Other rockhounding spots within driving distance of American River.

Across the state line from American River

American River is close enough to the Idaho border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

American River FAQ

Where is American River?+

American River is in Idaho County, Idaho, at 45.84117, -115.41529. Nearest road: Forest Service Road 1809.

What rocks and minerals can you find at American River?+

American River is reported to produce Zircon.

Is collecting allowed at American River?+

Generally open to casual rockhounding. Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig. Always confirm current rules with the managing agency before a trip.

What tools should I bring to American River?+

A rock hammer, sturdy gloves, safety glasses, and a collecting bag cover the basics here. Add a spray bottle: wet rock shows color and pattern that dry rock hides.

When is the best time to visit American River?+

The most comfortable months at American River are March to October.

How do I get to American River?+

Open the directions link to navigate to 45.84117, -115.41529 in Google Maps. The nearest road is Forest Service Road 1809.

More rockhounding in Idaho

See all 115 Idaho spots →

Open American River on the map

Use the RockHoundR app for live land overlays, weather, geology, directions, and saved finds.