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Page 5702, results 142526 - 142550

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Not all publications have extents, not all extents are completely accurate
Estimating the gas and dye quantities for modified tracer technique measurements of stream reaeration coefficients
R. E. Rathbun
1979, Water-Resources Investigations Report 79-27
Measuring the reaeration coefficient of a stream with a modified tracer technique has been accomplished by injecting either ethylene or ethylene and propane together and a rhodamine-WT dye solution into the stream. The movement of the tracers through the stream reach after injection is described by a one-dimensional diffusion equation....
Description of dredge samples from the Bering Sea continental margin
Michael S. Marlow, Alan K. Cooper, David W. Scholl, Tracy L. Vallier, Hugh McLean
1979, Open-File Report 79-1139
During 1978 twenty dredge sites were occupied and successfully dredged from the R.V. S.P. LEE along the eastern Bering Sea continental margin (Fig. 1). A total of several tons of rock were collected using a chain-bag dredge. Samples were recovered in water depths ranging from 750 to 2,750 meters from...
The Citronelle aquifers in Mississippi
E. H. Boswell
1979, Water-Resources Investigations Report 78-131
The Citronelle aquifers consist of sand and gravel of Pliocene age that forms a discontinuous outcrop area of about 6,000 square miles in southern Mississippi. The beds dip to the south at an average rate of about 6 feet per mile. The unconfined aquifers are used mostly for domestic and...
Assessment of geothermal resources of the United States: 1978
L.J. Patrick Muffler
1979, Circular 790
The geothermal resource assessment presented in this Circular is a refinement and updating of USGS Circular 726. Nonproprietary information available in June 1978 is used to assess geothermal energy in the ground and, when possible, to evaluate the fraction that might be recovered at the surface. Five categories of geothermal...
Map showing ground-water conditions in the Virgin River, Grand Wash, and Shivwits areas, Mohave County, Arizona, 1976
G. W. Levings, C. D. Farrar
1979, Water-Resources Investigations Report 79-57
The Virgin River, Grand Wash, and Shivwits areas include about 3 ,250 square miles in northwestern Arizona. Ground water is obtained mainly from the alluvium, conglomerate, and basalt; however, several other formations yield small amounts of water to some wells. In the Virgin River area, most wells are less than...
The magnetic charts of the United States for Epoch 1975
Eugene B. Fabiano, W. J. Jones, Norman W. Peddie
1979, Circular 810
Approximately 24,000 measurements taken from 1900 to 1974 were analyzed by least-squares methods to produce a series of five magnetic charts of the United States for 1975. A feature of the analysis, differing from techniques used for previous editions of the national chart, is that analytic models define the regional...
Ground-water quality in selected areas of Wisconsin
S. M. Hindall
1979, Open-File Report 79-1594
Analysis of 2,071 ground-water samples from 970 wells throughout Wisconsin indicate large variations in ground-water quality. Ground water in Wisconsin is generally suitable for most uses, but in some areas concentrations of chemical constituents exceed recommended drinking-water standards. Iron, manganese, and nitrate commonly exceed recommended drinking-water standards and dissolved solids,...
The use of Vacutainer tubes for collection of soil samples for helium analysis
Margaret Hinkle, James E. Kilburn
1979, Open-File Report 79-1441
Measurements of the helium concentration of soil samples collected and stored in Vacutainer-brand evacuated glass tubes show that Vacutainers are reliable containers for soil collection. Within the limits of reproducibility, helium content of soils appears to be independent of variations in soil temperature, barometric pressure, and quantity of soil moisture...
Proterozoic sedimentary rocks and basins of the Arabian shield and their evolution
Donald G. Hadley, Dwight Lyman Schmidt
1979, Open-File Report 79-1189
Proterozoic sedimentary rocks of the Arabian Shield consist of three depositional phases. Phase I (the oldest) includes the Baish, Bahah, and Jiddah groups, which consist of an immature assemblage dominated by fine-grained metagraywacke, graphitic schist, chert, marble, and subordinate polymictic conglomerate and metasiltstone. Clastic rocks of Phase I are composed...
Preliminary results of coal exploratory drilling in the Book Cliffs coal region, Garfield County, Colorado, and Grand County, Utah
James Louis Gualtieri
1979, Open-File Report 79-999
Four holes were drilled in the Book Cliffs coal region of Garfield County, Colorado and Grand County, Utah to provide coal core samples suitable for analysis and stratigraphic information about coal-bearing strata. Three of the holes were completed; the fourth remains to be completed; a fifth is planned. A total...
Availability of supplemental water supplies at salmonid fish-propagation stations in Wisconsin
C. Albert Harr, R.P. Novitzki
1979, Open-File Report 79-1170
Supplemental water supplies are available at all the 12 fish-propagation stations. At seven of the stations water may be obtained by diverting or impounding streams. Ground water is available from glacial sand-and-gravel aquifers at all the stations and from sandstone aquifers at 7 of the 12 stations. Probable well yields...
Pesticide residues in agricultural drains, southeastern desert area, California
Lawrence A. Eccles
1979, Water-Resources Investigations Report 79-16
A study is being made to determine the occurrence and distribution of pesticides in the agricultural drains for approximately 3/4 million irrigated acres in the southeastern desert area of California. This report describes the results of the first year of sampling and analyzing (1) water in the drains , (2)...
Magnitude and frequency of floods in western Oregon
David Dell Harris, Larry L. Hubbard, Lawrence E. Hubbard
1979, Open-File Report 79-553
A method for estimating the magnitude and frequency of floods is presented for unregulated streams in western Oregon. Equations relating flood magnitude to basin characteristics were developed for exceedance probabilities of 0.5 to 0.01 (2- to 100-year recurrence intervals). Separate equations are presented for four regions: Coast, Willamette, Rogue-Umpqua, and...
Urban stormwater data management system with applications to south Florida studies
Robert A. Miller, W. Harry Doyle Jr., Larry D. Wilson
1979, Water-Resources Investigations Report 79-93
A data management system was developed to store and retrieve urban stormwater data collected from four small urban basins in south Florida. The system is event oriented in that all data from one storm are stored together on the computer file. The data include descriptive information about the storm and...
Assessment of potential impacts to the hydrologic system related to surface mining
R. F. Hadley
1979, Open-File Report 79-1598
With the increasing demand for energy minerals, such as coal and uranium, and other minerals, Indian lands have received the attention of leasing, exploration, and mining interests. If these mineral resources, together with all other land resources, are to be managed properly by tribal decisionmakers, they will need more information....