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Page 5018, results 125426 - 125450

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Helicopter airborne electromagnetic survey (using the Dighem II system) of parts of the Lake City caldera, Hinsdale County, Colorado
D.C. Fraser, Z. Dvorak
1980, Open-File Report 80-917
The data presented herein is from an airborne electromagnetic-resistivity-survey conducted by Dighem Limited of Toronto Canada for the U.S. Geological Survey. The area surveyed is located in the western San Juan Mountains near Lake City, Colorado. The general area covered is between 37°45' and 38° latitude north and 107°15' and...
Potential for using the Upper Coachella Valley ground-water basin, California, for storage of artificially recharged water
Michael J. Mallory, Lindsay A. Swain, Stephen J. Tyley
1980, Open-File Report 80-599
This report presents a preliminary evaluation of the geohydrologic factors affecting storage of water by artificial recharge in the upper Coachella Valley, Calif. The ground-water basin of the upper Coachella Valley seems to be geologically suitable for large-scale artificial recharge. A minimum of 900 ,000 acre-feet of water could probably...
Graded storm sand layers offshore from the Yukon Delta, Alaska
C. Hans Nelson
1980, Open-File Report 80-712
The northern Bering Sea has a history of severe storm surges. The most recent, and perhaps the worst in historical times, occurred in November, 1974 (Fathauer, 1975). Evidence of storm surge events is exhibited in sea-floor stratigraphy as well as shoreline flooding and indicates that significant widespread changes in sea-floor...
Ground-water models for water resources planning
John E. Moore
1980, Open-File Report 80-581
In the past decade hydrologists have emphasized the development of computer-based mathematical models to aid in the understanding of flow, the transport of solutes, transport of heat, and deformation in the groundwater system. These models have been used to provide information and predictions for water managers. Too frequently, groundwater was...
Ground-water quality in North Idaho
D. J. Parliman, Harold R. Seitz, Michael L. Jones
1980, Open-File Report 80-596
From July 1977 to May 1978, water samples were collected from 116 wells north of the Palouse River in Idaho to define water-quality conditions, on a reconnaissance level, in major aquifers. Geologic and hydrologic data were combined with water-quality data to develop an understanding of factors affecting present and future...
Microorganisms in stormwater; a summary of recent investigations
Gail E. Mallard
1980, Open-File Report 80-1198
All storm runoff contains a variety of bacteria, including total coliform, fecal coliform, and fecal streptococci, which are derived from the land over which the water flows. Most total coliform are native soil organisms, whereas the fecal coliform and fecal streptococci originate from the feces of wild and domestic animals....
Maps showing kinds and sources of environmental geologic and geophysical data collected by the U.S. Geological Survey in the Baltimore Canyon trough area
James M. Robb, John R. Kirby
1980, Miscellaneous Field Studies Map 1210
Exploration for petroleum on the Continental Shelf and Slope off the eastern United States has generated great interest in the quantity and quality of data available to evaluate the nature and magnitude of possible geological enveironmental hazards.  This set of maps presents a compilation of publicly available geological and geophysical...