Riverview Recreation Area: Geode Digging in Black Hawk County, Iowa

Updated June 2026

Riverview Recreation Area is a mapped rockhounding spot in Black Hawk County, Iowa. Reported finds include geode. 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 Lakes Trail
Postcode: 50707
Coordinates: 42.47658, -92.30084

Geology at Riverview Recreation Area

This spot sits on ground mapped as Wapsipinicon Group that formed roughly 395 to 385 million years ago. Geodes typically weather free of their host rock and collect as rounded float in soils and drainages.

Mapped unit: Wapsipinicon Group
Age: 395–385 Ma (Middle Devonian)
Elevation: 870 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 Riverview Recreation Area

Best months: March to November. Typical highs run 85°F in midsummer and 28°F in midwinter, with winter lows near 11°F.

Climate normals: NOAA 1991-2020 monthlies, WATERLOO MUNI AP station (7 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 Riverview Recreation Area

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

Geode Encyclopedia →

Nearby rockhounding spots

Other rockhounding spots within driving distance of Riverview Recreation Area.

Across the state line from Riverview Recreation Area

Riverview Recreation Area 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.

Riverview Recreation Area FAQ

Where is Riverview Recreation Area?+

Riverview Recreation Area is in Black Hawk County, Iowa, at 42.47658, -92.30084. Nearest road: Cedar Valley Lakes Trail.

What rocks and minerals can you find at Riverview Recreation Area?+

Riverview Recreation Area is reported to produce Geode.

Is collecting allowed at Riverview Recreation Area?+

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 Riverview Recreation Area?+

Bring a crack hammer, a chisel, safety glasses, and a bucket. Candidates are rounder and lighter than solid rock; a soil pipe cutter opens them cleaner than a flat smash.

When is the best time to visit Riverview Recreation Area?+

The most comfortable months at Riverview Recreation Area are March to November.

How do I get to Riverview Recreation Area?+

Open the directions link to navigate to 42.47658, -92.30084 in Google Maps. The nearest road is Cedar Valley Lakes Trail.

More rockhounding in Iowa

See all 49 Iowa spots →

Open Riverview Recreation Area on the map

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