Doctors Park: Rockhounding in Milwaukee County, Wisconsin

Quick details

Access

Check locally

County

Milwaukee County

State

Wisconsin

Coordinates

43.16989, -87.88336

Geology at Doctors Park

This spot sits on ground mapped as Milwaukee Formation that formed roughly 420 to 360 million years ago. Fresh exposures, cuts, and drainages are typically the most productive places to look on ground like this.

Mapped unit

Milwaukee Formation

Age

420–360 Ma (Devonian)

Elevation

700 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 Doctors Park

Best months: April to November. Typical highs run 83°F in midsummer and 30°F in midwinter, with winter lows near 14°F.

Climate normals: NOAA 1991-2020 monthlies, MT MARY COLLEGE station (10 mi away).

Land & collecting status

Confirm rules before collecting

Land status here is not confirmed. Verify with the managing agency before collecting — federal, state, and tribal rules differ.

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.