Spatial and seasonal variability of dissolved methylmercury in two stream basins in the Eastern United States
Paul M. Bradley, Douglas A. Burns, Karen Riva-Murray, Mark E. Brigham, Daniel T. Button, Lia C. Chasar, Mark Marvin-DiPasquale, Mark A. Lowery, Celeste A. Journey
2011, Environmental Science & Technology (45) 2048-2055
We assessed methylmercury (MeHg) concentrations across multiple ecological scales in the Edisto (South Carolina) and Upper Hudson (New York) River basins. Out-of-channel wetland/floodplain environments were primary sources of filtered MeHg (F-MeHg) to the stream habitat in both systems. Shallow, open-water areas in both basins exhibited low F-MeHg concentrations and decreasing...
Genetic discontinuity among regional populations of Lophelia perfusa in the North Atlantic Ocean
Cheryl L. Morrison
2011, Conservation Genetics (12) 713-729
Knowledge of the degree to which populations are connected through larval dispersal is imperative to effective management, yet little is known about larval dispersal ability or population connectivity in Lophelia pertusa, the dominant framework-forming coral on the continental slope in the North Atlantic Ocean. Using nine microsatellite DNA markers, we...
Evaluating interactions between river otters and muskrats at bridge crossings in Kentucky
Joseph D. Clark, Ryan Williamson
2011, Journal of Mammalogy (92) 1314-1320
hreatened or endangered. Muskrat populations have been reduced in some streams where North American river otters (Lontra canadensis) were reintroduced, and it has been hypothesized that otter reintroduction could be used as a tool for conservation of mussels. We used occupancy estimation methods to evaluate the ecological relationship between muskrats...
Effects of acid deposition on ecosystems: Advances in the state of the science
Douglas A. Burns, Mark E. Fenn, Jill Baron
2011, Report, National Acid Precipitation Assessment Program Report to Congress: An Integrated Assessment
Chapter 2 focused on the environmental results of the ARP, presenting data from national monitoring networks on SO2 and NOx emissions, air quality, atmospheric deposition, surface water chemistry, and visibility. This chapter expands on this information by examining the most recent research into how ecosystems respond to acid deposition, especially...
The source, discharge, and chemical characteristics of water from Agua Caliente Spring, Palm Springs, California
Justin Brandt, Rufus D. Catchings, Allen H. Christensen, Alan L. Flint, Gini Gandhok, Mark R. Goldman, Keith J. Halford, Victoria E. Langenheim, Peter Martin, Michael J. Rymer, Roy A. Schroeder, Gregory A. Smith, Michelle Sneed
Peter Martin, editor(s)
2011, Scientific Investigations Report 2011-5156
Agua Caliente Spring, in downtown Palm Springs, California, has been used for recreation and medicinal therapy for hundreds of years and currently (2008) is the source of hot water for the Spa Resort owned by the Agua Caliente Band of the Cahuilla Indians. The Agua Caliente Spring is located about...
Simulation of the effects of groundwater withdrawals on water-level altitudes in the Sparta aquifer in the Bayou Meto-Grand Prairie area of eastern Arkansas, 2007-37
Brian R. Clark, Drew A. Westerman, D. Todd Fugitt
2011, Scientific Investigations Report 2011-5215
A groundwater-flow model of the Mississippi embayment was used to evaluate changes in water-level altitudes before (scenario 1) and after (scenario 2) the addition of wells that simulate potential future pumping from the Sparta aquifer in the Bayou Meto-Grand Prairie area of eastern Arkansas for the 30-year period from 2007...
Groundwater availability of the Mississippi embayment
Brian R. Clark, Rheannon M. Hart, Jason J. Gurdak
2011, Professional Paper 1785
Groundwater is an important resource for agricultural and municipal uses in the Mississippi embayment. Arkansas ranks first in the Nation for rice and third for cotton production, with both crops dependent on groundwater as a major source of irrigation requirements. Multiple municipalities rely on the groundwater resources to provide water...
Migration patterns, use of stopover areas, and austral summer movements of Swainson's hawks
Michael N. Kochert, Mark R. Fuller, Linda S. Schueck, Laura Bond, Marc J. Bechard, Brian Woodbridge, Geoff L. Holroyd, Mark S. Martell, Ursula Banasch
2011, The Condor (113) 89-106
From 1995 to 1998, we tracked movements of adult Swainson's Hawks (Buteo swainsoni), using satellite telemetry to characterize migration, important stopover areas, and movements in the austral summer. We tagged 46 hawks from July to September on their nesting grounds in seven U.S. states and two Canadian provinces. Swainson's Hawks...
Geologic map of the Bailey 30' x 60' quadrangle, North-Central Colorado
Chester A. Ruleman, Robert G. Bohannon, Bruce Bryant, Ralph R. Shroba, Wayne R. Premo
2011, Scientific Investigations Map 3156
The Bailey, Colo. 1:100,000-scale quadrangle lies within two physiographic and geologic provinces in central Colorado: 1) the Front Range and 2) South Park. Most of the Front Range is composed of Proterozoic rocks ranging in age from 1,790 Ma to 1,074 Ma. Along the eastern flanks and within the Denver...
Relating nutrient and herbicide fate with landscape features and characteristics of 15 subwatersheds in the Choptank River watershed
W. Dean Hively, Cathleen J. Hapeman, Laura L. McConnell, Thomas R. Fisher, Clifford P. Rice, Gregory W. McCarty, Ali M. Sadeghi, David R. Whitall, Peter M. Downey, Gabriela T. Nino de Guzman, Krystyna Bialek-Kalinski, Megan W. Lang, Anne B. Gustafson, Adrienne J. Sutton, Kerry A. Sefton, Jennifer A. Harman Fetcho
2011, Science of the Total Environment (409) 3866-3878
Excess nutrients and agrochemicals from non-point sources contribute to water quality impairment in the Chesapeake Bay watershed and their loading rates are related to land use, agricultural practices, hydrology, and pollutant fate and transport processes. In this study, monthly baseflow stream samples from 15 agricultural subwatersheds of the Choptank River...
Groundwater conditions and studies in the Augusta–Richmond County area, Georgia, 2008–2009
Gerard Gonthier, Stephen J. Lawrence, Michael F. Peck, O. Gary Holloway
2011, Scientific Investigations Report 2011-5188
Groundwater studies and monitoring efforts conducted during 2008–2009, as part of the U.S. Geological Survey (USGS) Cooperative Water Program with the City of Augusta in Richmond County, Georgia, provided data for the effective management of local water resources. During 2008–2009 the USGS completed: (1) installation of three monitoring wells and...
Water-quality characteristics of urban storm runoff at selected sites in East Baton Rouge Parish, Louisiana, February 2006 through November 2009
C. Paul Frederick
2011, Scientific Investigations Report 2011-5199
Water samples were collected at three watersheds in East Baton Rouge Parish, Louisiana, during February 2006 through November 2009 for continued evaluation of urban storm runoff. The watersheds represented land uses characterized predominantly as established commercial, industrial, and residential. The following water-quality data are reported: physical and chemical-related properties, fecal...
Simulations of groundwater flow and particle-tracking analysis in the zone of contribution to a public-supply well in San Antonio, Texas
Richard L. Lindgren, Natalie A. Houston, MaryLynn Musgrove, Lynne S. Fahlquist, Leon J. Kauffman
2011, Scientific Investigations Report 2011-5149
In 2006, a public-supply well in San Antonio, Texas, was selected for intensive study to assess the vulnerability of public-supply wells in the Edwards aquifer to contamination by a variety of compounds. A local-scale, steady-state, three-dimensional numerical groundwater-flow model was developed and used in this study to evaluate the movement...
Hydrogeology, chemical characteristics, and water sources and pathways in the zone of contribution of a public-supply well in San Antonio, Texas
MaryLynn Musgrove, Lynne Fahlquist, Gregory P. Stanton, Natalie A. Houston, Richard J. Lindgren
2011, Scientific Investigations Report 2011-5146
In 2001, the National Water-Quality Assessment (NAWQA) Program of the U.S. Geological Survey initiated a series of studies on the transport of anthropogenic and natural contaminants (TANC) to public-supply wells (PSWs). The main goal of the TANC project was to better understand the source, transport, and receptor factors that control...
Pharmaceutical compounds in Merrimack River water used for public supply, Lowell, Massachusetts, 2008-09
Andrew J. Massey, Marcus C. Waldron
2011, Scientific Investigations Report 2011-5192
This report presents results of a study conducted by the U.S. Geological Survey (USGS), in cooperation with the Massachusetts Department of Environmental Protection, to determine the occurrence of 14 commonly used human-health pharmaceutical compounds and fecal-indicator bacteria in Merrimack River water used as a drinking-water source by 135,000 residents in...
Water-quality data from shallow pond-bottom groundwater in the Fishermans Cove area of Ashumet Pond, Cape Cod, Massachusetts, 2001-2010
Timothy D. McCobb, Denis R. LeBlanc
2011, Data Series 588
The U.S. Geological Survey (USGS) collected water-quality data between 2001 and 2010 in the Fishermans Cove area of Ashumet Pond, Falmouth, Massachusetts, where the eastern portion of a treated-wastewater plume, created by more than 60 years of overland disposal, discharges to the pond. Temporary drive points were installed, and shallow...
Invasive crayfish in the Pacific Northwest
Christopher A. Pearl, Brome McCreary, Michael Adams
2011, Fact Sheet 2011-3132
Invasive species directly threaten freshwater biodiversity, particularly in regions of high aquatic richness like the Pacific Northwest (PNW). Crayfish are among the most impactful of aquatic invasive species. Invasive crayfish are considered ecosystem engineers due to their ability to alter basic wetland properties, such as reducing vegetation and bank integrity...
Selected time-lapse movies of the east rift zone eruption of KĪlauea Volcano, 2004–2008
Tim R. Orr
2011, Data Series 621
Since 2004, the U.S. Geological Survey's Hawaiian Volcano Observatory has used mass-market digital time-lapse cameras and network-enabled Webcams for visual monitoring and research. The 26 time-lapse movies in this report were selected from the vast collection of images acquired by these camera systems during 2004–2008. Chosen for their content and...
Streamflow, groundwater hydrology, and water quality in the upper Coleto Creek watershed in southeast Texas, 2009–10
Christopher L. Braun, Rebecca B. Lambert
2011, Scientific Investigations Report 2011-5157
The U.S. Geological Survey (USGS), in cooperation with the Goliad County Groundwater Conservation District, Victoria County Groundwater Conservation District, Pecan Valley Groundwater Conservation District, Guadalupe-Blanco River Authority, and San Antonio River Authority, did a study to examine the hydrology and stream-aquifer interactions in the upper Coleto Creek watershed. Findings of...
Audiomagnetotelluric data, Taos Plateau Volcanic Field, New Mexico
Chad E. Ailes, Brian D. Rodriguez
2011, Open-File Report 2011-1264
The U.S. Geological Survey is conducting a series of multidisciplinary studies of the San Luis Basin as part of the Geologic framework of the Rio Grande Basins project. Detailed geologic mapping, high-resolution airborne magnetic surveys, gravity surveys, audiomagnetotelluric surveys, and hydrologic and lithologic data are being used to better understand...
Geophysical bed sediment characterization of the Androscoggin River from the former Chlor-Alkali Facility Superfund Site, Berlin, New Hampshire, to the state border with Maine, August 2009
James R. Degnan, Andrew Teeple, Craig M. Johnston, Mark C. Marvin-DiPasquale, Darryl Luce
2011, Scientific Investigations Report 2011-5158
The former Chlor-Alkali Facility in Berlin, New Hampshire, was listed on the U.S. Environmental Protection Agency National Priorities List in 2005 as a Superfund site. The Chlor-Alkali Facility lies on the east bank of the Androscoggin River. Elemental mercury currently discharges from that bank into the Androscoggin River. The nature,...
Summary of oceanographic and water–quality measurements in West Falmouth Harbor and Buzzards Bay, Massachusetts, 2009–2010
Neil K. Ganju, Patrick J. Dickhudt, Jennifer A. Thomas, Jonathan Borden, Christopher R. Sherwood, Ellyn T. Montgomery, Erin R. Twomey, Marinna A. Martini
2011, Open-File Report 2011-1113
This data report presents oceanographic and water-quality observations made at six locations in West Falmouth Harbor and Buzzards Bay, Massachusetts, from August 2009 to September 2010. Both Buzzards Bay and West Falmouth Harbor are estuarine embayments; the input of freshwater on the eastern margin of Buzzards Bay adjacent to Cape...
Location and age of foraminifer samples examined by Chevron Petroleum Company paleontologists from more than 2,500 oil test wells in California
Earl E. Brabb
2011, Open-File Report 2011-1262
Chevron Petroleum Company in 2001 donated an estimated 50,000 foraminifer slides, 5,000 well logs, geologic and surface locality maps, and paleontologic reports to the California Academy of Sciences and Stanford University for safekeeping, because they stopped or cut back exploration for petroleum deposits in California. The material was loaned to...
Hydrogeologic setting and simulation of groundwater flow near the Canterbury and Leadville Mine Drainage Tunnels, Leadville, Colorado
Tristan P. Wellman, Suzanne S. Paschke, Burke Minsley, Jean A. Dupree
2011, Scientific Investigations Report 2011-5085
The Leadville mining district is historically one of the most heavily mined regions in the world producing large quantities of gold, silver, lead, zinc, copper, and manganese since the 1860s. A multidisciplinary investigation was conducted by the U.S. Geological Survey, in cooperation with the Colorado Department of Public Health and...
40Ar/39Ar age-spectrum data for hornblende, biotite, white mica, and K-feldspar samples from metamorphic rocks in the Great Smoky Mountains of North Carolina and Tennessee
Michael J. Kunk, Ryan J. McAleer
2011, Open-File Report 2011-1250
This report contains reduced 40Ar/39Ar data of hornblende, biotite, white mica and (or) sericite, and potassium-feldspar mineral separates and phyllite groundmass samples from metamorphic rocks of the Great Smoky Mountains in North Carolina and Tennessee. Included in this report are information on the location of the samples and a brief...
