Menomonie: Lake Superior Agate Rockhounding in Dunn County, Wisconsin

Updated June 2026

Menomonie is a mapped rockhounding spot in Dunn County, Wisconsin. Reported finds include lake superior agate. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Dunn County
State: Wisconsin
Nearest road: Stout Road
Postcode: 54751
Coordinates: 44.88490, -91.87736

Geology at Menomonie

This spot sits on ground mapped as sandstone that formed roughly 540 to 485 million years ago. Tough silica like agate, jasper, and chert typically weathers out of beds like these and collects as float in drainages and on deflation surfaces.

Age: 540–485 Ma (Cambrian)
Rock types: sandstone
Elevation: 970 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 Menomonie

Best months: April to October. Typical highs run 81°F in midsummer and 23°F in midwinter, with winter lows near 4°F.

Climate normals: NOAA 1991-2020 monthlies, MENOMONIE station (3 mi away), adjusted for elevation.

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 Menomonie

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

Lake Superior Agate Encyclopedia →

Nearby rockhounding spots

Other rockhounding spots within driving distance of Menomonie.

Across the state line from Menomonie

Menomonie 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.

Menomonie FAQ

Where is Menomonie?+

Menomonie is in Dunn County, Wisconsin, at 44.88490, -91.87736. Nearest road: Stout Road.

What rocks and minerals can you find at Menomonie?+

Menomonie is reported to produce Lake Superior Agate.

Is collecting allowed at Menomonie?+

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 Menomonie?+

Most agate and jasper is surface float: bring a spray bottle, a pick or small shovel, and a sturdy bag. Wet stones show their banding and translucence.

When is the best time to visit Menomonie?+

The most comfortable months at Menomonie are April to October.

How do I get to Menomonie?+

Open the directions link to navigate to 44.88490, -91.87736 in Google Maps. The nearest road is Stout Road.

More rockhounding in Wisconsin

See all 77 Wisconsin spots →

Open Menomonie on the map

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