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Page 5833, results 145801 - 145825

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Publication Extents

Not all publications have extents, not all extents are completely accurate
General procedure for gaging streams
R. W. Carter, Jacob Davidian
1968, Techniques of Water-Resources Investigations 03-A6
This chapter briefly describes the objectives and procedures used in obtaining streamflow records. It is considered an introduction to other chapters on surface-water techniques which treat individual procedures in greater detail....
Stage measurement at gaging stations
Thomas J. Buchanan, William P. Somers
1968, Techniques of Water-Resources Investigations 03-A7
Continuous measurements of stream stage are used in determining records of stream discharge. In addition a record of stream stage is useful in itself, as in designing structures affected by stream elevation or in planning the use of flood plains. This report describes instruments and structures commonly used in obtaining...
Measurement of peak discharge at culverts by indirect methods
G. L. Bodhaine
1968, Techniques of Water-Resources Investigations 03-A3
This chapter classifies culvert flow into six types, gives discharge equations based on continuity and energy equations, and describes procedures for measuring peak discharges using culverts in the field. Discharge coefficients for a variety of geometries and flow types arc given. Ten examples detail step-by-step computation procedures....
Rutile and topaz in Precambrian gneiss, Jefferson and Clear Creek Counties, Colorado
Douglas M. Sheridan, Richard B. Taylor, Sherman P. Marsh
1968, Circular 567
Disseminated rutile and major amounts of topaz have been identified in Precambrian topaz-quartz gneiss northwest of Evergreen, Colo. The rutile occurs in quartz-topaz-sillimanite gneiss that forms a stratigraphic unit which is 11 to 100 feet thick and is identified along strike for more than 7,000 feet. Three composite chip samples...
Gold in meteorites and in the earth's crust
Robert Sprague Jones
1968, Circular 603
The reported gold contents of meteorites range from 0.0003 to 8.74 parts per million. Gold is siderophilic, and the greatest amounts in meteorites are in the iron phases. Estimates ,of the gold content of the earth's crust are in the range of 0.001 to 0.006 parts per million....
Calibration and maintenance of vertical-axis type current meters
George F. Smoot, Charles E. Novak
1968, Techniques of Water-Resources Investigations 08-B2
The purpose of this chapter is to describe the procedures used in the manufacture and calibration of current meters and to present in detail information pertinent to their proper maintenance and repair. Recent intensive studies on the calibration of current meters and the effects of wear of the component parts...
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....
Frequency curves
H. C. Riggs
1968, Techniques of Water-Resources Investigations 04-A2
This manual describes graphical and mathematical procedures for preparing frequency curves from samples of hydrologic data. It also discusses the theory of frequency curves, compares advantages of graphical and mathematical fitting, suggests methods of describing graphically defined frequency curves analytically, and emphasizes the correct interpretations of a frequency curve....