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Regional baseline geochemistry and environmental effects of gold placer mining operations on the Fortymile River, eastern Alaska

Dates

Year
2000

Citation

Briggs, Paul H., Meier, Allen L., Vohden, Jim, Wang, Bronwen, Wanty, Richard B., Gough, Larry P., and Kelley, Karen D., 2000, Regional baseline geochemistry and environmental effects of gold placer mining operations on the Fortymile River, eastern Alaska: U.S. Geological Survey: United States, p. 101-110.

Summary

A systematic water-quality study of the Fortymile River and many of its major tributaries in eastern Alaska was conducted in June of 1997 and 1998. Surface-water samples were collected for chemical analyses to establish regional baseline geochemistry values and to evaluate the possible environmental effects of suction-dredge placer gold mining and bulldozer-operated placer gold mining (commonly referred to as “cat mining”). In general, the water quality of the Fortymile River is very good, with low total dissolved solids and only two cases in which the concentration of any element exceeded primary or secondary drinking-water quality standards. In both cases, iron exceeded secondary drinking-water limits. At the time this work was [...]

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  • LC MAP - Landscape Conservation Management and Analysis Portal
  • Northwest Boreal Landscape Conservation Cooperative

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Type
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Reference Item
NWBLCC20160627

Additional Information

Alternate Titles

  • Geological Studies in Alaska by the U.S. Geological Survey, 1998

Identifiers

Type Scheme Key
ISBN http://sciencebase.gov/vocab/identifierScheme 10449612

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