Swiftwater Park: Agate & Jasper Rockhounding in Douglas County, Oregon

Updated August 2026

Swiftwater Park is a mapped rockhounding spot in Douglas County, Oregon. Reported finds include agate, jasper, quartz, carnelian, petrified wood. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Check locally
County: Douglas County
State: Oregon
Nearest road: North Umpqua Highway
Coordinates: 43.33306, -123.00476

Geology at Swiftwater Park

This spot sits on Early Western Cascade Volcanics, mapped as andesite flows, plagioclase, clinopyroxene phenocrysts, and flow breccia that formed roughly 56 to 23 million years ago. Petrified wood typically comes from volcanic ash beds like the ones associated with this ground, where buried forests were slowly replaced by silica.

Mapped unit: Early Western Cascade Volcanics
Age: 56–23 Ma (Eocene to Oligocene)
Rock types: andesite flows, plagioclase, clinopyroxene phenocrysts, and flow breccia
Elevation: 790 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 Swiftwater Park

Conditions here are workable year-round, with typical highs from 47°F in winter to 85°F in summer.

Climate normals: NOAA 1991-2020 monthlies, IDLEYLD PARK 4 NE station (3 mi away), adjusted for elevation.

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.

State guidance last verified: April 1, 2026

BLM Oregon/Washington — Rockhounding & mineral material
Oregon Department of Geology and Mineral Industries (DOGAMI)
Oregon Parks and Recreation Department — beach collecting rules
Community submissions reviewed against published agency rules

Found at Swiftwater Park

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

Nearby rockhounding spots

Other rockhounding spots within driving distance of Swiftwater Park.

Swiftwater Park FAQ

Where is Swiftwater Park?+

Swiftwater Park is in Douglas County, Oregon, at 43.33306, -123.00476. Nearest road: North Umpqua Highway.

What rocks and minerals can you find at Swiftwater Park?+

Swiftwater Park is reported to produce Agate, Jasper, Quartz, Carnelian, Petrified Wood.

Is collecting allowed at Swiftwater Park?+

Confirm rules before collecting. Land status here is not confirmed. Verify with the managing agency before collecting — federal, state, and tribal rules differ. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Swiftwater Park?+

A rock hammer, sturdy gloves, and a padded bag cover petrified wood hunting. Most pieces are surface float, so walking slopes and washes beats digging.

When is the best time to visit Swiftwater Park?+

Swiftwater Park is workable year-round.

How do I get to Swiftwater Park?+

Open the directions link to navigate to 43.33306, -123.00476 in Google Maps. The nearest road is North Umpqua Highway.

More rockhounding in Oregon

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Open Swiftwater Park on the map

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