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Page 3447, results 86151 - 86175

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Not all publications have extents, not all extents are completely accurate
Water quality in the Ozark Plateaus, Arkansas, Kansas, Missouri, and Oklahoma, 1992-95
James C. Petersen, James C. Adamski, Richard W. Bell, Jerri V. Davis, Suzanne R. Femmer, David A. Freiwald, Robert L. Joseph
1998, Circular 1158
This report is intended to summarize major findings that emerged between 1992 and 1995 from the water-quality assessment of the Ozark Plateaus Study Unit and to relate these findings to water-quality issues of regional and national concern. The information is primarily intended for those who are involved in water-resource management....
Mississippi Basin Carbon Project science plan
E.T. Sundquist, R.F. Stallard, N.B. Bliss, H. W. Markewich, J.W. Harden, M.J. Pavich, M.D. Dean Jr.
1998, Open-File Report 98-177
Understanding the carbon cycle is one of the most difficult challenges facing scientists who study the global environment. Lack of understanding of global carbon cycling is perhaps best illustrated by our inability to balance the present-day global CO2 budget. The amount of CO2 produced by burning fossil fuels and by...
Digital geologic map of the Thirsty Canyon NW quadrangle, Nye County, Nevada
S.A. Minor, P. P. Orkild, K. A. Sargent, R.G. Warren, D.A. Sawyer, J.B. Workman
1998, Open-File Report 98-623
This digital geologic map compilation presents new polygon (i.e., geologic map unit contacts), line (i.e., fault, fold axis, dike, and caldera wall), and point (i.e., structural attitude) vector data for the Thirsty Canyon NW 7 1/2' quadrangle in southern Nevada. The map database, which is at 1:24,000-scale resolution, provides geologic...
Probability of detecting atrazine/desethyl-atrazine and elevated concentrations of nitrate (NO2+NO3-N) in ground water in the Idaho part of the upper Snake River basin
Michael G. Rupert
1998, Water-Resources Investigations Report 98-4203
Draft Federal regulations may require that each State develop a State Pesticide Management Plan for the herbicides atrazine, alachlor, cyanazine, metolachlor, and simazine. This study developed maps that the Idaho State Department of Agriculture might use to predict the probability of detecting atrazine and desethyl-atrazine (a breakdown product of atrazine)...
Factors related to the joint probability of flooding on paired streams
G. F. Koltun, J. M. Sherwood
1998, Water-Resources Investigations Report 98-4238
The factors related to the joint probabilty of flooding on paired streams were investigated and quantified to provide information to aid in the design of hydraulic structures where the joint probabilty of flooding is an element of the design criteria. Stream pairs were considered to have flooded jointly at the...
Water quality in the central Columbia Plateau, Washington and Idaho, 1992-95
Alex K. Williamson, Mark D. Munn, Sarah J. Ryker, Richard J. Wagner, James C. Ebbert, Ann M. Vanderpool
1998, Circular 1144
Water quality in the Central Columbia Plateau of eastern Washington and western Idaho has been adversely affected by agriculture, especially in irrigated areas, according to the results of a five-year investigation by the U. S. Geological Survey (USGS). Some improvements, however, are noticeable, such as less sediment being washed into...
Design, revisions, and considerations for continued use of a ground-water-flow model of the coastal plain aquifer system in Virginia
E. R. McFarland
1998, Water-Resources Investigations Report 98-4085
A digital numerical model of the ground-water-flow system in the Virginia Coastal Plain was constructed as part of the Regional Aquifer System Analysis program of the U.S. Geological Survey and subsequently revised based on reinterpretations of the hydrogeologic framework. The revised model has been incorporated by the Virginia Department of...
Status and trends of the nation's biological resources
Michael J. Mac, Paul A. Opler, Catherine E. Puckett Haecker, Peter D. Doran, editor(s)
1998, Report
This report is a comprehensive summary of the status and trends of our nation’s biological resources. The report describes the major processes and factors affecting biological resources, and it treats regional status and trends. Authors of the chapters and boxes in this two-volume report were drawn from federal and state...