Lake Merwin Area Carnelians: Agate & Carnelian Rockhounding in Cowlitz County, Washington
Updated August 2026
Lake Merwin Area Carnelians is a mapped rockhounding spot in Cowlitz County, Washington. Reported finds include agate, carnelian. Below: coordinates, access notes, nearby spots, and trip-planning links.
Map showing Lake Merwin Area Carnelians in Cowlitz County, Washington
Quick details
- Access
- Public area
- County
- Cowlitz County
- State
- Washington
- Coordinates
- 45.96980, -122.58959
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.
State guidance last verified:
- Washington Geological Survey (DNR)
- Stonerose Interpretive Center, Visit & rules
- BLM Spokane District
- Community submissions reviewed against published agency rules
Found at Lake Merwin Area Carnelians
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 Lake Merwin Area Carnelians.
- KelsoCowlitz County, Washington · 15 mi awayAgate
- Brush PrairieClark County, Washington · 17 mi awayGold
- CamasClark County, Washington · 28 mi awayGold
- WashougalTop pick in WashingtonClark County, Washington · 29 mi awayMoss Agate, Amethyst
- ToledoLewis County, Washington · 35 mi awayGeode, Nodule
- Newaukum River gravelsLewis County, Washington · 46 mi awayGeode, Nodule
- Lucas CreekLewis County, Washington · 47 mi awayAgate, Carnelian, Chalcedony
- McCoy Farm near AdnaLewis County, Washington · 52 mi awayCarnelian, Petrified Wood
Across the state line from Lake Merwin Area Carnelians
Lake Merwin Area Carnelians is close enough to the Washington border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.
- Columbia River shoreColumbia County, Oregon · 15 mi awayThomsonite
- Clear CreekColumbia County, Oregon · 36 mi awayPlume Agate, Carnelian, Jasper
- Nehalem River gravelsClatsop County, Oregon · 47 mi awayAgate, Carnelian, Jasper
- Wilson RiverTop pick in OregonTillamook County, Oregon · 54 mi awayAgate, Carnelian, Jasper
- Clackamas RiverClackamas County, Oregon · 57 mi awayPetrified Wood, Cinnabar, Agate
- MosierWasco County, Oregon · 61 mi awayPetrified Wood, Silicified Pine Cone
Lake Merwin Area Carnelians FAQ
Where is Lake Merwin Area Carnelians?+
What rocks and minerals can you find at Lake Merwin Area Carnelians?+
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More rockhounding in Washington
See all 100 Washington spots →Open Lake Merwin Area Carnelians on the map
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