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165658 results.

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Page 4026, results 100626 - 100650

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Digitization of a geologic map for the Quebec-Maine-Gulf of Maine global geoscience transect
Bruce E. Wright, David B. Stewart
1990, Circular 1041
The Bedrock Geologic Map of Maine was digitized and combined with digital geologic data for Quebec and the Gulf of Maine for the Quebec-Maine-Gulf of Maine Geologic Transect Project. This map is being combined with digital geophysical data to produce three-dimensional depictions of the subsurface geology and to produce cross...
Basin characteristics, history of stream gaging, and statistical summary of selected streamflow records for the Rapid Creek basin, western South Dakota
Daniel G. Driscoll, John S. Zogorski
1990, Open-File Report 90-120
The report presents a summary of basin characteristics affecting streamflow, a history of the U.S. Geological Survey 's stream-gaging program, and a compilation of discharge records and statistical summaries for selected sites within the Rapid Creek basin. It is the first in a series which will investigate surface-water/groundwater relations along...
A literature survey of information on well installation and sample collection procedures used in investigations of ground-water contamination by organic compounds
D.H. Dumouchelle, E. A. Lynch, T. R. Cummings
1990, Open-File Report 90-378
A survey of literature on well installation and water-quality sampling, particularly as they relate to investigations of ground-water contamination by organic compounds, has been conducted. Library card files and computerized data bases were searched to identify journal articles, conference proceedings, technical reports, books, and other publications. Pertinent information has been...
Water-resources programs and hydrologic-information needs, Marion County, Indiana, 1987
R.F. Duwelius
1990, Open-File Report 90-159
Water resources are abundant in Marion County, Indiana, and have been developed for public and industrial supply, energy generation, irrigation, and recreation. The largest water withdrawals are from surface water, and the two largest water uses are public supply and cooling water for electrical-generating plants. Water-resources programs in the county...
Solid-precipitation (snowfall) measurement intercomparison, Bismarck, North Dakota
Douglas G. Emerson, Kathleen M. Macek-Rowland
1990, Open-File Report 90-124
Difficulties involved in obtaining accurate measurements of solid precipitation (snowfall) have been recognized for many years. Many studies have been conducted to evaluate the accuracy and performance of precipitation gages. These studies show that the type of collection method used can significantly affect the quantity of precipitation measured. Although the...
Cartographic projection procedures for the UNIX environment; a user's manual
Gerald I. Evenden
1990, Open-File Report 90-284
A tutorial description of the general usage of the cartographic projection program proj (release 3) along with speci c cartographic parameters and illustrations of the ap- proximately 70 cartographic projections supported by the program is presented. The program is designed as a standard Unix lter utility to be employed with other pro- grams in the...
Evaluation of selenium mobility in soil using sorption experiments and a numerical model, western San Joaquin Valley, California
John L. Fio, Roger Fujii, S. J. Deverel
1990, Open-File Report 90-135
Sorption experiments and a numerical model were used to assess the effects of irrigation and drainage on the depth distribution of selenite and selenate in soils from the western San Joaquin Valley, California. The sorption studies show that selenate (15 to 12,400 micrograms per liter of selenium) is not adsorbed...
Ground-water flow and solute movement to drain laterals, western San Joaquin Valley, California; II, Quantitative hydrologic assessment
J.L. Fio, S. J. Deverel
1990, Open-File Report 90-137
Ground-water-flow modeling was used to estimate ground-water-flow paths and traveltimes to quantitatively assess the hydrologic processes affecting ground water and solute movement to drain laterals. Modeling results were used to calculate the depth distribution of ground water flowing into drain laterals at 1.8 meters (drain lateral 1) and 2.7 meters...
Statistical summaries of selected Iowa streamflow data through September 30, 1988
E.E. Fischer, N.B. Melcher, S.P. Kluesner
1990, Open-File Report 90-170
Statistical summaries of streamflow data collected at 144 active and discontinued stream-gaging stations in Iowa through water year 1988 are presented in the report. The summaries for each streamgaging station include: 1) station description, 2) the most recent stage-discharge rating table, 3) statistics of monthly and annual mean discharges, 4)...