Flook Lake: Agate & Jasper Rockhounding in Lake County, Oregon

Updated August 2026

Flook Lake is a mapped rockhounding spot in Lake County, Oregon. Reported finds include agate, jasper. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Check locally
County: Lake County
State: Oregon
Coordinates: 42.57557, -119.53117

Geology at Flook Lake

This spot sits on surficial deposits; Playa lake deposits, mapped as mixed playa sediment and evaporite that formed within roughly the last 3 million years. Evaporite beds like these typically carry gypsum and related minerals, with selenite crystals weathering out of soft exposures.

Mapped unit: surficial deposits; Playa lake deposits
Age: 3 Ma to present (Quaternary)
Rock types: mixed playa sediment and evaporite
Elevation: 5,090 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 Flook Lake

Best months: March to November. Typical highs run 85°F in midsummer and 43°F in midwinter, with winter lows near 24°F.

Climate normals: NOAA 1991-2020 monthlies, HART MTN REFUGE station (7 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 Flook Lake

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 Flook Lake.

Across the state line from Flook Lake

Flook Lake is close enough to the Oregon border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Flook Lake FAQ

Where is Flook Lake?+

Flook Lake is in Lake County, Oregon, at 42.57557, -119.53117.

What rocks and minerals can you find at Flook Lake?+

Flook Lake is reported to produce Agate, Jasper.

Is collecting allowed at Flook Lake?+

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 Flook Lake?+

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 Flook Lake?+

The most comfortable months at Flook Lake are March to November.

How do I get to Flook Lake?+

Open the directions link to navigate to 42.57557, -119.53117 in Google Maps. Some spots are remote, so check road conditions before driving out.

More rockhounding in Oregon

See all 177 Oregon spots →

Open Flook Lake on the map

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