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Page 168, results 4176 - 4200

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Not all publications have extents, not all extents are completely accurate
Development and application of a regression equation for estimating the occurrence of atrazine in shallow ground water beneath agricultural areas of the United States
Paul E. Stackelberg, Robert J. Gilliom, David M. Wolock, Kerie J. Hitt
2006, Scientific Investigations Report 2005-5287
Results from 52 ground-water studies throughout the United States were used to examine relations between the occurrence of atrazine in shallow ground water in agricultural settings and explanatory variables that describe the natural setting, agricultural-management practices, and the type and amount of development in each area. The explanatory variables that...
Occurrence, distribution, and transport of pesticides in agricultural irrigation-return flow from four drainage basins in the Columbia Basin Project, Washington, 2002-04, and comparison with historical data
Richard J. Wagner, Lonna M. Frans, Raegan L. Huffman
2006, Scientific Investigations Report 2006-5005
Water-quality samples were collected from sites in four irrigation return-flow drainage basins in the Columbia Basin Project from July 2002 through October 2004. Ten samples were collected throughout the irrigation season (generally April through October) and two samples were collected during the non-irrigation season. Samples were analyzed for temperature, pH,...
Watershed characteristics and pre-restoration surface-water hydrology of Minebank Run, Baltimore County, Maryland, water years 2002-04
Edward J. Doheny, Roger J. Starsoneck, Elise A. Striz, Paul M. Mayer
2006, Scientific Investigations Report 2006-5179
Stream restoration efforts have been ongoing in Maryland since the early 1990s. Physical stream restoration often involves replacement of lost sediments to elevate degraded streambeds, re-establishment of riffle-pool sequences along the channel profile, planting vegetation in riparian zones, and re-constructing channel banks, point bars, flood plains, and stream-meanders. The primary...
Vaccination as a potential means to prevent plague in black-footed ferrets: Progress and continuing challenges
Tonie E. Rocke, Pauline Nol, Paul E. Marinari, J.S. Kreeger, Susan R. Smith, G.P. Andrews, A.W. Friedlander
2006, Scientific Investigations Report 2005-5293
This study was conducted to further assess the feasibility of vaccinating black-footed ferrets (Mustela nigripes) against plague (caused by the bacterium Yersinia pestis). On days 0 and 28, 17 postreproductive ferrets were immunized by subcutaneous injection with a recombinant fusion protein containing F1 and V antigens from Y. pestis. Another...
Recovery of the black-footed ferret: Progress and continuing challenges- Proceedings of the Symposium on the Status of the Black-footed Ferret and Its Habitat, Fort Collins, Colorado, January 28-29, 2004
James E. Roelle, Brian J. Miller, Jerry L. Godbey, Dean E. Biggins, editor(s)
2006, Scientific Investigations Report 2005-5293
The black-footed ferret (Mustela nigripes) is a member of the weasel family (Mustelidae) and is closely related to the Siberian polecat (M. eversmannii) of Asian steppes and the European polecat (M. putorius). Compared to its relatives, the black-footed ferret is an extreme specialist, depending on the prairie dogs (Cynomys spp.)...
Evaluation of evidence supporting the effectiveness of desert tortoise recovery actions
William I. Boarman, William B. Kristan
2006, Scientific Investigations Report 2006-5143
As a federally threatened species, the desert tortoise's (Gopherus agassizii) recovery is required under the Endangered Species Act (ESA). According to the criteria established by the Desert Tortoise Recovery Plan (U.S. Fish and Wildlife Service 1994) for delisting the tortoise from ESA protection, the species as a whole will be considered...
Ecology of bonytail and razorback sucker and the role of off-channel habitats in their recovery
Gordon A. Mueller
2006, Scientific Investigations Report 2006-5065
The bonytail and razorback sucker are two of four endangered mainstem fishes found in the Colorado River. Unlike the Colorado pikeminnow and humpback chub, wild populations of the bonytail and razorback sucker are either extirpated from the mainstem river or are nearly so. Agencies are aggressively stocking these fish and...
Water quality of the Crescent River basin, Lake Clark National Park and Preserve, Alaska, 2003-2004
Timothy P. Brabets, Robert T. Ourso
2006, Scientific Investigations Report 2006-5151
The U.S. Geological Survey and the National Park Service conducted a water-quality investigation of the Crescent River Basin in Lake Clark National Park and Preserve from May 2003 through September 2004. The Crescent River Basin was studied because it has a productive sockeye salmon run that is important to the...
The Amphibian Research and Monitoring Initiative (ARMI): 5-year report
Erin Muths, Alisa L. Gallant, Evan H. Campbell Grant, William A. Battaglin, David E. Green, Jennifer S. Staiger, Susan C. Walls, Margaret S. Gunzburger, Rick F. Kearney
2006, Scientific Investigations Report 2006-5224
The Amphibian Research and Monitoring Initiative (ARMI) is an innovative, multidisciplinary program that began in 2000 in response to a congressional directive for the Department of the Interior to address the issue of amphibian declines in the United States. ARMI’s formulation was cross-disciplinary, integrating U.S. Geological Survey scientists from Biology,...
Methods Used to Assess the Susceptibility to Contamination of Transient, Non-Community Public Ground-Water Supplies in Indiana
Leslie D. Arihood, David A. Cohen
2006, Scientific Investigations Report 2005-5059
The Safe Water Drinking Act of 1974 as amended in 1996 gave each State the responsibility of developing a Source-Water Assessment Plan (SWAP) that is designed to protect public-water supplies from contamination. Each SWAP must include three elements: (1) a delineation of the source-water protection area, (2) an inventory of...
Evaluation of metal loading to streams near Creede, Colorado, August and September 2000
B. A. Kimball, R.L. Runkel, K. Walton-Day, B.K. Stover
2006, Scientific Investigations Report 2004-5143
Decisions about remediation of mine drainage on the watershed scale require an understanding of metal contributions from all sources to be able to choose the best sites for remediation. A hydrologic framework to study metal loading in the Willow Creek watershed, a tributary to the Rio Grande River, was established...
Development of an approach for integrating components of the U.S. Geological Survey Biomonitoring of Environmental Status and Trends (BEST) and National Stream Quantity Accounting Network (NASQAN) programs for large U.S. rivers
Nancy J. Bauch, Christopher J. Schmitt, Charles G. Crawford
2005, Scientific Investigations Report 2005-5083
A national-scale framework for monitoring environmental contaminants in fish and effects of contaminant exposure on fish in large U.S. rivers has been proposed by the Biomonitoring of Environmental Status and Trends (BEST) Program of the U.S. Geological Survey (USGS). The framework shares many features and objectives with the USGS National...
Lead isotopic compositions of soil and near-surface till profiles from a watershed containing arsenic-enriched groundwater in coastal Maine
Robert Ayuso, Nora Foley, Gregory Wandless, Jeremy Dillingham, Anna Colvin
2005, Scientific Investigations Report 2005-5112
Lead isotope compositions of soils and near-surface tills from an area of coastal Maine known to have groundwater with anomalously high arsenic contents were measured in order to determine the source of the lead and, by inference, possible sources of arsenic. Five soil and till sites were selected for detailed...
Surface gamma-ray survey of the Barre West quadrangle, Washington and Orange Counties, Vermont
Gregory J. Walsh, Aaron M. Satkoski
2005, Scientific Investigations Report 2005-5276
This study was designed to determine the levels of naturally occurring radioactivity in bedrock from surface measurements at outcrops during the course of 1:24,000-scale geologic mapping and to determine which rock types were potential sources of radionuclides. Elevated levels of total alpha particle radiation (gross alpha) occur in a public water...
Stratabound copper-silver deposits of the Mesoproterozoic Revett Formation, Montana and Idaho, with a section on databases and spatial-data files for the geology and mineral deposits of the Revett Formation
David E. Boleneus, Larry M. Appelgate, John H. Stewart, Michael L. Zientek, Mary H. Carlson, D. W. Chase
2005, Scientific Investigations Report 2005-5231
The western Montana copper belt in western Montana and northern Idaho contains several large stratabound copper-silver deposits in fine- to medium-grained quartzite beds of the Revett Formation of the Mesoproterozoic (1,470-1,401 Ma) Belt Supergroup. Production from the deposits at the Troy Mine and lesser production from the Snowstorm Mine has...