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Effects of coal-mine drainage on stream water quality in the Allegheny and Monongahela River Basins-Sulfate transport and trends
In 1980, the Allegheny and Monongahela Rivers transported a sulfate load of 1.2 million and 1.35 million tons, respectively, to the Ohio River at Pittsburgh. The Monongahela River Basin had a sulfate yield of 184 tons per square mile per year compared to 105 tons per square mile per year for the Allegheny River Basin. Within the large Allegheny...Sams, James I.; Beer, Kevin M.
Environmental Setting and Effects on Water Quality in the Great and Little Miami River Basins, Ohio and Indiana
The Great and Little Miami River Basins drain approximately 7,354 square miles in southwestern Ohio and southeastern Indiana and are included in the more than 50 major river basins and aquifer systems selected for water-quality assessment as part of the U.S. Geological Survey's National Water-Quality Assessment Program. Principal streams include...Debrewer, Linda M.; Rowe, Gary L.; Reutter, David C.; Moore, Rhett C.; Hambrook, Julie A.; Baker, Nancy T.
Arsenic in Ground-Water Resources of the United States
Arsenic is a naturally occurring element in rocks, soils, and the waters in contact with them. Recognized as a toxic element for centuries, arsenic today also is a human health concern because it can contribute to skin, bladder, and other cancers (National Research Council, 1999). Recently, the National Research Council (1999) recommended lowering...Welch, Alan H.; Watkins, Sharon A.; Helsel, Dennis R.; Focazio, Michael J.
The Amazon reveals its secrets--partly
The role of the tropics in global climate change during glacial cycles is hotly debated in paleoclimate cycles today. Records from South America have not provided a clear picture of tropical climate change. In his Perspective, Betancourt highlights the study by Maslin and Burns, who have deduced the outflow of the Amazon over the past 14,000 years...Betancourt, Julio L.
Emergent biological patterns and surface-subsurface interactions at landscape scales
In this chapter, we focus on emergent biological patterns in riverine ecosystems at landscape scales resulting from surface-subsurface water interaction. Our objectives are to examine (1) how the balance of physical and chemical factors on the "natural" geologic template affects biological patterns, (2) how natural hydrothermal systems can be used...Jones, Jeremy B.; Mulholland, Patrick J.; Pringle, C.M.; Triska, F.J.
Analysis of atrazine and four degradation products in the pore water of the vadose zone, central Indiana
A new method is described for the analysis of atrazine and four of its degradation products (desethylatrazine, deisopropylatrazine, didealkylatrazine, and hydroxyatrazine) in water. This method uses solid- phase extraction on a graphitized carbon black cartridge, derivatization of the eluate with N-methyl-N-(tert-butyldimethylsilyl)...Panshin, S.Y.; Carter, D.S.; Bayless, E.R.
Determining timescales for groundwater flow and solute transport
One of the principal uses of environmental tracers is for determining the ages of soil waters and groundwaters. (We may refer to this as ‘hydrochronology’by analogy with the dating of solid materials known as geochronology.) Information on soil water and groundwater age enables timescales for a range of subsurface processes to be determined. For...Cook, Peter G.; Herczeg, Andrew L.; Cook, Peter G.; Böhlke, John Karl
Metal exposure in a benthic macroinvertebrate, Hydropsyche californica, related to mine drainage in the Sacramento River
A biomonitoring technique was employed to complement studies of metal transport in the upper Sacramento River affected by acid mine drainage. Metals (Al, Cd, Cu, Fe, Hg, Pb, and Zn) were determined in a resident invertebrate, Hydropsyche californica (Insecta: Trichoptera), and streambed sediments (<62 µm) to assess metal contamination...Cain, Daniel J.; Carter, James L.; Fend, Steven V.; Luoma, Samuel N.; Alpers, Charles N.; Taylor, Howard E.
Ground Water Atlas of the United States
PrefaceThe Ground Water Atlas of the United States presents a comprehensive summary of the Nation's ground-water resources and is a basic reference for the location, geography, geology, and hydrologic characteristics of the major aquifers in the Nation. The information was collected by the U.S. Geological Survey and other agencies during the...
Modeling water quality in rivers using the Branched Lagrangian Transport Model (BLTM)Jobson, Harvey E.
Significant Floods in the United States During the 20th century - USGS Measures a Century of FloodsPerry, Charles A.
Water Resources Data, New Mexico, Water Year 1999. Volume 1. The Rio Grande Basin; the Mimbres River Basin; and the Tularosa Valley Basin
Water-resources data for the 1999 water year for New Mexico consist of discharge and and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels and water quality in wells and springs. This report contains discharge records for 168 gaging stations; stage and contents for 26 lakes and reservoirs; water...Ortiz, David; Lange, Kathy; Beal, Linda