South Umpqua Bridge: Quartz & Agate Rockhounding in Douglas County, Oregon
- Minerals reported
- 5
- Elevation
- 790 ft
- Best months
- Year-round
South Umpqua Bridge is a mapped rockhounding spot in Douglas County, Oregon. Reported finds include quartz, agate, jasper, pyrite, schist. Below: coordinates, access notes, nearby spots, and trip-planning links.
Plan your visit
Confirm rules before collecting
- County
- Douglas County
- State
- Oregon
- Nearest road
- Tiller Trail Highway
- Postcode
- 97417
- Coordinates
- 42.97318, -123.17088
Coordinates are approximate. Confirm the exact ground in the RockHoundR app, where land overlays show which agency manages the area.
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.
Best time to visit South Umpqua Bridge
Comfortable months (45 to 90°F highs)
Conditions here are workable year-round, with typical highs from 52°F in winter to 88°F in summer.
Climate normals: NOAA 1991-2020 monthlies, RIDDLE station (10 mi away).
Geology at South Umpqua Bridge
This spot sits on surficial deposits; Terrace deposits, mapped as terrace gravel that formed within roughly the last 3 million years. Gravels like these concentrate whatever survives the river: agate, jasper, and other tough silica typically show up as rounded, waxy stones.
- Mapped unit
- surficial deposits; Terrace deposits
- Age
- 3 Ma to present (Pleistocene)
- Rock types
- terrace gravel
- 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.
Today's weather
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The app shows live weather, recent rain, and a daily rockhounding score for South Umpqua Bridge.
Get the appSources & 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:
- 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 South Umpqua Bridge
Each name 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 South Umpqua Bridge.
- South Umpqua River Gravel BarsDouglas County, Oregon · 4 mi awayAgate, Jasper, Carnelian
- South Fork Umpqua River - Myrtle CreekDouglas County, Oregon · 7 mi awayAgate, Jasper, Quartz
- South Umpqua River - Rest AreaDouglas County, Oregon · 9 mi awayAgate, Jasper, Carnelian
- Nickel Mountain Mine - RiddleDouglas County, Oregon · 13 mi awayGarnierite, Chrysoprase
- Cedar Springs Mt.Douglas County, Oregon · 15 mi awayAzurite, Chalcolite
- Island Creek Day Use AreaDouglas County, Oregon · 16 mi awayGold
- S Umpqua RiverDouglas County, Oregon · 17 mi awayAgate, Chalcedony, Carnelian
- Umpqua RiverDouglas County, Oregon · 20 mi awayOregon Jade
Across the state line from South Umpqua Bridge
South Umpqua Bridge 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.
- Hungry CreekSiskiyou County, California · 72 mi awayCassiterite, Copper
- Shelly Creek & Monkey Creek MinesDel Norte County, California · 77 mi awayGold, Arsenopyrite
- Happy Camp Jade MinesSiskiyou County, California · 77 mi awayJade, Gold, Serpentine
- Agate Area (Klamath River)Siskiyou County, California · 78 mi awayAgate, Bloodstone, Jasper
- Keystone MineDel Norte County, California · 79 mi awayCopper Nugget
- Jenny CreekSiskiyou County, California · 79 mi awayAgate, Carnelian, Petrified Wood
South Umpqua Bridge FAQ
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