Gough, Larry P.

9 items:

Regional baseline geochemistry and environmental effects of gold placer mining operations on the Fortymile River, eastern Alaska 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... Categories: Data, Publication; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Adaptation planning 1-Best management practices, Baseline 2-Maps of Anthropogenic Disturbances, Monitoring 5-Physical Science, landscape scale conservation: Human Activity
Regional baseline geochemistry and environmental effects of gold placer mining operations on the Fortymile River, eastern Alaska Categories: Data, Publication; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Adaptation planning 1-Best management practices, landscape scale conservation: Human Activity
Geochemistry of lithologic units, Fortymile River study area, East-Central Alaska Categories: Data, Publication; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Monitoring 5-Physical Science
Comparative characteristics of natural organic matter in the Fortymile River, Alaska Categories: Data, Publication; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Monitoring 2-Standardized Stream and Lake Information
Scanning electron photomicrograph of the bristles on part of an unwashed wheat-head rachis. Adams County, Washington. 1980. Album caption: Scanning electron photomicrograph of the bristles on part of an unwashed wheat-head rachis, location A-1, eastern Washington. Adams County, Washington. June 1980. Published as figure 448 in U.S. Geological Survey. Professional paper 1250. 1981. Handwritten notes on album caption: (Photo by L.P. Gough) Index card unavailable. Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Adams County, Washington, Mount St. Helens Collection, Photographers, Volcanoes, photo print

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