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Page 2545, results 63601 - 63625

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Field tests of nylon-screen diffusion samplers and pushpoint samplers for detection of metals in sediment pore water, Ashland and Clinton, Massachusetts, 2003
Marc J. Zimmerman, Don A. Vroblesky, Kimberly W. Campo, Andrew J. Massey, Walter Scheible
2005, Scientific Investigations Report 2005-5155
Efficient and economical screening methods are needed to detect and to determine the approximate concentrations of potentially toxic trace-element metals in shallow groundwater- discharge areas (pore water) where the metals may pose threats to aquatic organisms; such areas are likely to be near hazardous-waste sites. Pushpoint and nylon-screen diffusion samplers...
Sediment studies in the Assabet River, central Massachusetts, 2003
Marc J. Zimmerman, Jason R. Sorenson
2005, Scientific Investigations Report 2005-5131
From its headwaters in Westborough, Massachusetts, to its confluence with the Sudbury River, the 53-kilometer-long Assabet River passes through a series of small towns and mixed land-use areas. Along the way, wastewater-treatment plants release nutrient-rich effluents that contribute to the eutrophic state of this waterway. This condition is most obvious...
Estimates of ground-water recharge based on streamflow-hydrograph methods: Pennsylvania
Dennis W. Risser, Randall W. Conger, James E. Ulrich, Michael P. Asmussen
2005, Open-File Report 2005-1333
This study, completed by the U.S. Geological Survey (USGS) in cooperation with the Pennsylvania Department of Conservation and Natural Resources, Bureau of Topographic and Geologic Survey (T&GS), provides estimates of ground-water recharge for watersheds throughout Pennsylvania computed by use of two automated streamflow-hydrograph-analysis methods--PART and RORA. The PART computer program...
Effects of rain gardens on the quality of water in the Minneapolis-St. Paul metropolitan area of Minnesota, 2002-04
Lan H. Tornes
2005, Scientific Investigations Report 2005-5189
Rain gardens are a popular method of managing runoff while attempting to provide aesthetic and environmental benefits. Five rain-garden sites in the Minneapolis – Saint Paul metropolitan area of Minnesota were instrumented to evaluate the effects of this water-management system on surface and subsurface water quality. Most of these sites...
Geochemical assessment of metals and dioxin in sediment from the San Carlos Reservoir and the Gila, San Carlos, and San Francisco Rivers, Arizona
Stan E. Church, LaDonna M. Choate, Marci E. Marot, David L. Fey, Monique Adams, Paul H. Briggs, Zoe Ann Brown
2005, Scientific Investigations Report 2005-5086
In October 2004, we sampled stream-bed sediment, terrace sediment, and sediment from the San Carlos Reservoir to determine the spatial and chronological variation of six potentially toxic metals-Cu, Pb, Zn, Cd, As, and Hg. Water levels in the San Carlos Reservoir were at a 20-year low at an elevation of...
Use of discrete-zone monitoring systems for hydraulic characterization of a fractured-rock aquifer at the University of Connecticut Landfill, Storrs, Connecticut, 1999 to 2002
Carole D. Johnson, Christopher S. Kochiss, C. B. Dawson
2005, Water-Resources Investigations Report 2003-4338
The U.S. Geological Survey, in cooperation with the University of Connecticut, used a suite of hydraulic methods to characterize the hydrogeology of a fractured-rock aquifer near the former landfill and chemical-waste disposal pits at the University of Connecticut, Storrs, Connecticut. Multiple methods were used to determine head, driving potential, and...
Quaternary Geologic Map of Connecticut and Long Island Sound Basin
Janet Radway Stone, John P. Schafer, Elizabeth Haley London, Mary L. DiGiacomo-Cohen, Ralph S. Lewis, Woodrow B. Thompson
2005, Scientific Investigations Map 2784
The Quaternary geologic map (sheet 1) and explanatory figures and cross sections (sheet 2) portray the geologic features formed in Connecticut during the Quaternary Period, which includes the Pleistocene (glacial) and Holocene (postglacial) Epochs. The Quaternary Period has been a time of development of many details of the landscape and...
Geology of the proposed Yucca Mountain repository site, Nevada
John H. Peck, David C. Buesch
2005, Conference Paper
Yucca Mountain, located about 100 miles northwest of Las Vegas, Nevada, has been recommended by the President for a mined geologic repository for high-level radioactive waste. This field trip will examine the geologic and hydrologic setting for Yucca Mountain, as well as specific results of the site characterization program. The...
Iowa magnetic and gravity maps and data: A web site for distribution of data
Robert P. Kucks, Patricia L. Hill
2005, Data Series 135
Magnetic anomalies are due to variations in the Earth's magnetic field caused by the uneven distribution of magnetic minerals (primarily magnetite) in the rocks that make up the upper part of the Earth's crust. The features and patterns of the magnetic anomalies can be used to delineate details of subsurface...
Effects of spray-irrigated treated effluent on water quantity and quality, and the fate and transport of nitrogen in a small watershed, New Garden Township, Chester County, Pennsylvania
Curtis L. Schreffler, Daniel G. Galeone, John M. Veneziale, Leif E. Olson, David L. O’Brien
2005, Scientific Investigations Report 2005-5043
An increasing number of communities in Pennsylvania are implementing land-treatment systems to dispose of treated sewage effluent. Disposal of treated effluent by spraying onto the land surface, instead of discharging to streams, may recharge the ground-water system and reduce degradation of stream-water quality. The U.S. Geological Survey (USGS), in cooperation...
Nebraska, Kansas, and Oklahoma aeromagnetic and gravity maps and data: A web site for distribution of data
Ronald E. Sweeney, Patricia L. Hill
2005, Data Series 138
The Nebraska, Kansas, and Oklahoma aeromagnetic grid is constructed from grids that combine information collected in 28 separate aeromagnetic surveys conducted between 1954 and 1985. The data from these surveys are of varying quality. The design and specifications (terrain clearance, sampling rates, line spacing, and reduction procedures) varied from survey...
Quality of nutrient data from streams and ground water sampled during water years 1992-2001
David K. Mueller, Cindy J. Titus
2005, Scientific Investigations Report 2005-5106
Proper interpretation of water-quality data requires consideration of the effects that bias and variability might have on measured constituent concentrations. In this report, methods are described to estimate the bias due to contamination of samples in the field or laboratory and the variability due to sample collection, processing, shipment, and...
Analysis of borehole-radar reflection data from Machiasport, Maine, December 2003
Carole D. Johnson, Peter K. Joesten
2005, Scientific Investigations Report 2005-5087
In December 2003, the U.S. Geological Survey, in cooperation with the U.S. Army Corps of Engineers, collected borehole-radar reflection logs in two boreholes in Machiasport, Maine. These bedrock boreholes were drilled as part of a hydrogeologic investigation of the area surrounding the former Air Force Radar Tracking Station site on...