Eagle: Diamond Rockhounding in Waukesha County, Wisconsin

Updated June 2026

Eagle is a mapped rockhounding spot in Waukesha County, Wisconsin. Reported finds include diamond. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Waukesha County
State: Wisconsin
Nearest road: State Highway 59
Postcode: 53119
Coordinates: 42.87543, -88.52450

Geology at Eagle

This spot sits on Sinnipee Group, mapped as dolostone that formed roughly 485 to 445 million years ago. Carbonate rock like this dissolves and weathers readily, so fresh road cuts, quarries, and creek exposures are typically the most productive ground.

Mapped unit: Sinnipee Group
Age: 485–445 Ma (Ordovician)
Rock types: dolostone
Elevation: 900 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 Eagle

Best months: April to November. Typical highs run 82°F in midsummer and 27°F in midwinter, with winter lows near 11°F.

Climate normals: NOAA 1991-2020 monthlies, SULLIVAN 3 SE - WFO MKX station (6 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.

Sources: RockHoundR public spot dataset, app land overlays, and local agency review before each trip.

Found at Eagle

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

Diamond Encyclopedia →

Nearby rockhounding spots

Other rockhounding spots within driving distance of Eagle.

Across the state line from Eagle

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

North AuroraKane County, Illinois · 75 mi awayBornite, Calcite, Chalcopyrite

Eagle FAQ

Where is Eagle?+

Eagle is in Waukesha County, Wisconsin, at 42.87543, -88.52450. Nearest road: State Highway 59.

What rocks and minerals can you find at Eagle?+

Eagle is reported to produce Diamond.

Is collecting allowed at Eagle?+

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 Eagle?+

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 Eagle?+

The most comfortable months at Eagle are April to November.

How do I get to Eagle?+

Open the directions link to navigate to 42.87543, -88.52450 in Google Maps. The nearest road is State Highway 59.

More rockhounding in Wisconsin

See all 77 Wisconsin spots →

Open Eagle on the map

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