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Page 1818, results 45426 - 45450

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Not all publications have extents, not all extents are completely accurate
Feasibility study for an airborne geophysical survey of the Republic of Liberia
Randolph Wilson Bromery
1968, Open-File Report 68-22
A feasibility study for an airborne geophysical survey of the Republic of Liberia indicates that airborne magnetometer and airborne scintillation detector surveys would be useful 1) in providing support for the current geologic mapping program, 2) as a guide in locating concentrations of economic minerals, and 3) delimiting the extent...
Tertiary gold-bearing channel gravel in northern Nevada County, California
D. W. Peterson, W. E. Yeend, H. W. Oliver, R.E. Mattick
1968, Circular 566
The remains of a huge Tertiary gravel-filled channel lie in the area between the South and Middle Yuba Rivers in northern Nevada County, Calif. The deposits in this channel were the site of some of the most productive hydraulic gold mines in California between the 1850's and 1884. The gravel...
Platinum deposits of Alaska
John Beaver Mertie Jr.
1968, Open-File Report 68-177
The placer deposits of the Goodnews Bay district in southwestern Alaska have yielded the only significant production of platinum metals in the United States, although small amounts of platinum metals have been produced from other deposits in Alaska and elsewhere in the United States. The Goodnews Bay deposits were described...
Ground-water resources of the Acu Valley, Rio Grande Norte, Brazil
Harry G. Rodis, Jonas Maria. de Castro Araujo
1968, Water Supply Paper 1663-C
The Acu Valley is the lower part of the Rio Piranhas valley in the northwestern part of the State of Rio Grande do Norte, Brazil. It begins where the Rio Piranhas leaves the crystalline Precambrian rocks to flow across the outcrop of sedimentary rocks. The area considered in this report...
Analysis of water quality of the Mahoning River in Ohio
Gene A. Bednar, Charles R. Collier, William Perry Cross
1968, Water Supply Paper 1859-C
The Mahoning River drains the densely populated and industrialized Warren-Youngstown area in northeastern Ohio. Significant chemical constituents and physical properties generally regarded as important in establishing water-quality standards for the Mahoning River are evaluated on the basis of hydrologic conditions and water use. Most of the interpretations and the appraisal...
Fresh and saline ground-water zones in the Punjab region, West Pakistan
W.V. Swarzenski
1968, Water Supply Paper 1608-I
An extensive program of test drilling and water sampling, undertaken by the Water and Soils Investigation Division (WASID) of the West Pakistan Water and Power Development Authority (WAPDA) to evaluate hydrologic problems related to waterlogging and soil salinity, has furnished data for the delineation of fresh and saline ground-water zones...
Determination of discharge during pulsating flow
T. H. Thompson
1968, Water Supply Paper 1869-D
Pulsating flow in an open channel is a manifestation of unstable-flow conditions in which a series of translatory waves of perceptible magnitude develops and moves rapidly downstream. Pulsating flow is a matter of concern in the design and operation of steep-gradient channels. If it should occur at high stages in...
Flood profile study, Squaw Creek, Linn County, Iowa
Water Resources Division, U.S. Geological Survey
1968, Open-File Report 68-302
This report is the result of a cooperative agreement between the city of Cedar Rapids and the U.S. Geological Survey that provides for the collection of hydrologic data by the Geologic Survey on small streams in and near the city. The city furnished the large-scale topographic map showing a stream...
Electrical analog analysis of ground-water depletion in central Arizona
T. W. Anderson
1968, Water Supply Paper 1860
The Salt River Valley and the lower Santa Cruz River basin are the two largest agricultural areas in Arizona. The extensive use of ground water for irrigation has resulted in the need for a thorough appraisal of the present and future ground-water resources. The ground-water reservoir provides 80 percent (3.2...
Progress report, 1966-1967: Water study - Greater Anchorage area, Alaska
William W. Barnwell, Raymond S. George
1968, Open-File Report 68-6
The purpose of the 5-year cooperative water resources study of the Greater Anchorage area by the Geological Survey is to appraise the water resources of the area and obtain data needed to solve water problems and to assist in the orderly development and management of the resource....
Ground-water exploration in the Bosque del Apache Grant, Socorro County, New Mexico
James B. Cooper
1968, Open-File Report 68-63
Test drilling along the Rio Grande in the Bosque del Apache Grant in Socorro County, New Mexico has shown that the area is hydrologically complex and that the quality of the ground water varies from saline to fresh within short distances both laterally and vertically. Nearly all of the riverside...
Statistical properties of dune profiles
C.F. Nordin Jr.
1968, Open-File Report 68-201
Properties of sand waves formed by subcritical unidirectional water currents are investigated by statistical analyses of records of streambed profiles. Records of bed elevation y as a function of distance x along the channel, y = y(x), and time records at a fixed point of the channel, y = y(t),...
Water temperatures in the lower Columbia River
Albert M. Moore
1968, Circular 551
Daily observations of water temperature for 20 sites in the lower Columbia River are presented in tabular form and in profile form by months for the period August 1941 to July 1942. The profiles show minimum, mean (average), and maximum water temperatures for those months from river mile 142 to...
Some statistical tools in hydrology
H. C. Riggs
1968, Techniques of Water-Resources Investigations 04-A1
This chapter of 'Techniques of Water-Resources Investigations' provides background material needed for understanding the statistical procedures most useful in hydrology; it furnishes detailed procedures, with examples, of regression analyses; it describes analysis of variance and covariance and discusses the characteristics of hydrologic data....
Storage requirements for Arkansas streams
James Lee Patterson
1968, Water Supply Paper 1859-G
The supply of good-quality surface water in Arkansas is abundant. owing to seasonal and annual variability of streamflow, however, storage must be provided to insure dependable year-round supplies in most of the State. Storage requirements for draft rates that are as much as 60 percent of the mean annual flow...
Hydrology of Crater, East and Davis Lakes, Oregon; with section on Chemistry of the Lakes
Kenneth N. Phillips, A. S. Van Denburgh
1968, Water Supply Paper 1859-E
Crater, East, and Davis Lakes are small bodies of fresh water that occupy topographically closed basins in Holocene volcanic terrane. Because the annual water supply exceeds annual evaporation, water must be lost by seepage from each lake. The seepage rates vary widely both in volume and in percentage of the...
River channel bars and dunes - Theory of kinematic waves
Walter Basil Langbein, Luna Bergere Leopold
1968, Professional Paper 422-L
A kinematic wave is a grouping cf moving objects in zones along a flow path and through which the objects pass. These concentrations may be characterized by a simple relation between the speed of the moving objects and their spacing as a result of interaction between them.Vehicular traffic has long...
Vertical mass transfer in open channel flow
Harvey E. Jobson
1968, Open-File Report 68-146
The vertical mass transfer coefficient and particle fall velocity were determined in an open channel shear flow. Three dispersants, dye, fine sand and medium sand, were used with each of three flow conditions. The dispersant was injected as a continuous line source across the channel and downstream concentration profiles were...
Estimated use of water in the United States, 1965
Charles Richard Murray
1968, Circular 556
Estimates of water use in the United States for 1965 indicate that an average of about 310 bgd (billion gallons per day) were withdrawn for public-supply, rural domestic and livestock, irrigation, and industrial (including thermoelectric power)uses--that is, about 1,600 gallons per capita per day. This represents an increase of 15...
Geochemical and geophysical anomalies in the western part of the Sheep Creek Range, Lander County, Nevada
Garland Bayard Gott, Charles J. Zablocki
1968, Circular 595
Extensive geochemical anomalies are present along the west side of the Sheep Creek Range in Lander County, Nev. Anomalous concentrations of zinc, arsenic, mercury, silver, copper, lead, and to some extent gold, molybdenum, and antimony occur in iron-rich material along fracture planes and in quartz veins in Paleozoic formations. A...