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Page 5526, results 138126 - 138150

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Water quality of hydrologic bench marks; an indicator of water quality in the natural environment
James E. Biesecker, Donald K. Leifeste
1974, Circular 460-E
Water-quality data, collected at 57 hydrologic bench-mark stations in 37 States, allow the definition of water quality in the 'natural' environment and the comparison of 'natural' water quality with water quality of major streams draining similar water-resources regions. Results indicate that water quality in the 'natural' environment is generally very...
Large rivers of the United States
Kathleen T. Iseri, Walter Basil Langbein
1974, Circular 686
Information on the flow of the 28 largest rivers in the United States is presented for the base periods 1931-60 and 1941-70. Drainage area, stream length, source, and mouth are included. Table 1 shows the average discharge at downstream gaging stations. Table 2 lists large rivers in order of average...
Environmental impact analysis; the example of the proposed Trans-Alaska Pipeline
David A. Brew
1974, Circular 695
The environmental impact analysis made as required by the National Environmental Policy Act of 1969 for the proposed trans-Alaska pipeline included consideration of the (1) technologically complex and geographically extensive proposed project, (2) extremely different physical environments across Alaska along the proposed route and elsewhere in Alaska and in Canada...
Gold in the Black Hills, South Dakota, and how new deposits might be found
James Jennings Norton
1974, Circular 699
Of the recorded production of 34,694,552 troy ounces of gold mined in South Dakota through 1971, about 90 percent has come from Precambrian ore bodies in the Homestake mine at Lead in the northern Black Hills. Most of the rest has come from ore deposited in the Deadwood Formation (Cambrian)...
Dissolved-solids discharge to the oceans from the conterminous United States
Donald K. Leifeste
1974, Circular 685
Dissolved-solids data from 54 river basins for 1966-69 were used to compute the amount of dissolved material contributed to the oceans from the conterminous United States. The computations show that about 264,000,000 tons are discharged annually. The Gulf of Mexico receives the largest load, about 183,000,000 tons, of which about...
Selenium, fluorine, and arsenic in surficial materials of the conterminous United States
Hansford T. Shacklette, Josephine G. Boerngen, John R. Keith
1974, Circular 692
Concentrations of selenium, fluorine, and arsenic in 912, 911, and 910 samples, respectively, of soils and other regoliths from sites approximately 50 miles (80 km) apart throughout the United States are represented on maps by symbols showing five ranges of values. Histograms of the concentrations of these elements are also...
Mineral resources of Antarctica
Nancy A. Wright, Paul L. Williams, editor(s)
1974, Circular 705
Although the existence of mineral deposits in Antarctica is highly probable, the chances of finding them are quite small. Minerals have been found there in great variety but only as occurrences. Manganese nodules, water (as ice), geothermal energy, coal, petroleum, and natural gas are potential resources that could perhaps be...
Model synthesis in frequency analysis of Missouri floods
Leland D. Hauth
1974, Circular 708
Synthetic flood records for 43 small-stream sites aided in definition of techniques for estimating the magnitude and frequency of floods in Missouri. The long-term synthetic flood records were generated by use of a digital computer model of the rainfall-runoff process. A relatively short period of concurrent rainfall and runoff data...
Extent and development of urban flood plains
William Joseph Schneider, James E. Goddard
1974, Circular 601-J
A study of26 urbanized areas in the United States indicates that the amount of urban area in flood plains ranges from 2.4 percent for Spokane, Wash., to 81 percent for Monroe, La. The median value is 10.5 percent, and the weighted average is 16.2 percent. The amount of development on...
United States Geological Survey Alaska program, 1974
Claire Carter
1974, Circular 700
This report on the Alaskan activities of the U.S. Geological Survey contains up-to-date accounts of recent results and summaries of plans for the summer of 1974. It is organized in six parts: (1) responsibilities and services of the Geological Survey; (2) organization of the U.S. Geological Survey; (3} Alaskan field...
Molybdenite in the Montezuma District of central Colorado
George J. Neuerburg, Theodore Botinelly, John R. Watterson
1974, Circular 704
The Montezuma mining district, in the Colorado mineral belt, is defined by an assemblage of porphyry, ore, and altered rocks that originated in the venting of a Tertiary batholith through weak structures in Precambrian rocks. The ore consists of silver-lead-zinc veins clustered on the propylitic fringe of a geometrically complex...
Seismic hazards and land-use planning
Donald R. Nichols, Jane M. Buchanan-Banks
1974, Circular 690
Basic earth-science data are necessary for a realistic assessment of seismic hazards and as a basis for limiting corrective land-use controls only to those areas of greatest hazard. For example, the location, character, and amount of likely displacement and activity of surface faulting can be predicted if detailed geologic maps...
Floods of September-October 1967 in south Texas and northeastern Mexico
Elmer E. Schroeder, R.U. Grozier, D. C. Hahl, A.E. Hulme
1974, Water Supply Paper 1880-B
Floods produced by Hurricane Beulah during September and October 1967 were outstanding because of the magnitude of the stage and discharge and because of the number of river basins affected. Previously known maximum stages were exceeded, at the downstream station, in five river basins in Texas by amounts ranging from...