Watershed Contamination from Metal and Uranium Mining

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Scenic view of the Upper Animas River watershed, Silverton, Colorado -- one of the watersheds in the USGS Abandoned Mine Lands Initiative.

View of Prospect Gulch, Upper Animas River watershed, Colo.

A small mountain stream impacted by acid mine drainage, Prospect Gulch, Upper Animas River watershed, Colorado.

USGS scientists processing water samples under a awning.

USGS scientists processing water samples during a stream tracer test on California Gulch, Upper Animas River watershed, Colorado.

USGS sceintist collecting fish with an electrofishing unit, Upper Animas River, Colo.

Collecting fish samples for toxicity testing with an electrofishing unit in the Upper Animas River, Colorado.

USGS scientists walking up Mineral Creek, Colo.

Locating inflows and springs discharging into Mineral Creek, Colorado, prior to conducting a tracer test. Tracer tests are used to assess the relative magnitude of metal loading from inflows along a stream reach.

View of a scientist in front of an abandoned mine structure.

An abandoned structure and waste-rock pile from the Silverledge Mine adjacent to Mineral Creek, Colorado.

USGS sceintist and an autosampler on the bank of the North Fork of the Animas River, Colo.

A site of continuous water-quality sampling during a tracer test conducted on the North Fork of the Animas River, Colorado.

View of an equipment box with a data logger inside.

View of a data logger used to control a pump that injects a tracer solution into a stream during a stream tracer test.

USGS sceintists collecting invertebrate samples.

Collecting invertebrate samples to assess the community composition of a mining-impacted stream, Upper Animas River watershed, Colorado.

USGS equipment trailer -- bringing tracer tests to Rocky Mountain streams.

One of the "obstacles" facing USGS scientists studying the impact of abandoned mine sites on Rocky Mountain watersheds, Mineral Creek, Colorado.

USGS scientist measures the distance between sampling points along a stream.

Spacing sampling points along a stream prior to a tracer test on Mineral Creek, Colorado.

Scientists, tents, and sampling equipment on the shore of the Upper Animas River, Colo.

Filling a holding tank with a tracer solution prior to the start of a stream tracer study, Upper Animas River watershed, Colorado.

Abandoned mine site in the Boulder River watershed, Montana -- one of the watersheds in the USGS Abandoned Mine Lands Initiative.

Crystal Mine at Uncle Sam Gulch, Boulder River watershed, Montana.

Comet Mine Mill, Mont., with glory hole where valley-fill tailings were placed.

Comet Mine Mill, Montana, with glory hole where valley-fill tailings were placed.

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More Information on Mining Contamination

Watershed Contamination from Metal and Uranium Mining Investigation

Related Photo Gallaries

Hard Rock Mining Contamination in Rocky Mountain Terrain -- Upper Arkansas River , Colorado
Arsenic Contamination from Hard Rock Mining -- Whitewood Creek - Belle Fourche River - Cheyenne River System, Western South Dakota
Development and Research: Diurnal Metal Variations in Streams

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