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Hydrologic studies of the U.S. Geological Survey related to coal development on Colorado
Water Resources Division, U.S. Geological Survey
1976, Open-File Report 76-549
This report summarizes the hydrologic studies related to coal development being conducted by the U.S. Geological Survey in the State of Colorado. The objective of the hydrologic data-acquisition program is to collect surface-water quality and quantity data and ground-water level records. These data are needed to define predevelopment conditions and...
Ground-water levels in Wyoming, 1975
Wilbur C. Ballance, Pamela B. Freudenthal
1976, Open-File Report 76-598
Ground-water levels are measured periodically in a network of about 260 observation wells in Wyoming to record changes in ground-water storage. The areas of water-level observation are mostly where ground water is used in large quantities for irrigation or municipal purposes. This report contains maps showing location of observation wells...
Interpretation of Landsat imagery of the Tanacross quadrangle, Alaska
Nairn R. Albert, William Clinton Steele
1976, Open-File Report 76-850
In this study of Landsat imagery for the Tanacross quadrangle, Alaska, two fundamentally different types of images were used: (1) a black and white, single band, Landsat mosaic of Alaska, constructed with images that are not computer-enhanced; and (2) various types of computer-enhanced Landsat images....
Water-quality effects on Baker Lake of recent volcanic activity at Mount Baker, Washington
Gilbert Carl Bortleson, Reed T. Wilson, B. L. Foxworthy
1976, Open-File Report 76-714
Increased volcanic activity on Mount Baker, which began in March 1975, represents the greatest known activity of a Cascade Range volcano since eruptions at Lassen Peak, Calif. during 1914-17. Emissions of dust and increased emanations of steam, other gases, and heat from the Sherman Crater area of the mountain focused...
Test drilling for ground water in Hudspeth, Culberson, and Presidio Counties in westernmost Texas
Joseph Spencer Gates, Donald Edward White
1976, Open-File Report 76-338
From November 1973 to October 1974, the U.S. Geological Survey drilled four deep test holes to supplement hydrologic and geophysical studies evaluating fresh ground water in the basins of westernmost Texas. For each test, samples of drill cuttings were collect·ed, borehole geophysical logs were run, and water samples were collected...
Interpretation of magnetic surveys in intermontane valleys of Nevada and southern New Mexico
G. D. Bath
1976, Open-File Report 76-440
An evaluation of the magnetic method of geophysical exploration in intermontane valleys is made through examples of magnetic properties, magnetic surveys, reduction of data, and analysis of magnetic anomalies from some valley areas. Measurements of magnetic properties of samples collected along valley margins or from drill holes indicate that the...