La Porte City — Rockhounding in Black Hawk County, Iowa

La Porte City is a mapped rockhounding spot in Black Hawk County, Iowa. Reported finds include agate. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Black Hawk County
State: Iowa
Nearest road: Cedar Valley Nature Trail
Postcode: 50651
Coordinates: 42.32153, -92.18754

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 La Porte City

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

Agate Encyclopedia →

Nearby rockhounding spots

Other rockhounding spots within driving distance of La Porte City.

Across the state line from La Porte City

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

La Porte City FAQ

Where is La Porte City?+

La Porte City is in Black Hawk County, Iowa, at 42.32153, -92.18754. Nearest road: Cedar Valley Nature Trail.

What rocks and minerals can you find at La Porte City?+

La Porte City is reported to produce Agate.

Is collecting allowed at La Porte City?+

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.

How do I get to La Porte City?+

Open the directions link to navigate to 42.32153, -92.18754 in Google Maps. The nearest road is Cedar Valley Nature Trail.

More rockhounding in Iowa

See all 49 Iowa spots →

Open La Porte City on the map

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