Groundwater conditions and studies in the Brunswick–Glynn County area, Georgia, 2008
Gregory S. Cherry, Michael F. Peck, Jaime A. Painter, Welby L. Stayton
2010, Open-File Report 2009-1275
The Upper Floridan aquifer is contaminated with saltwater in a 2-square-mile area of downtown Brunswick, Georgia. This contamination has limited development of the groundwater supply in the Glynn County area. Hydrologic, geologic, and water-quality data are needed to effectively manage water resources. Since 1959, the U.S. Geological Survey has conducted...
Low-flow frequency and flow duration of selected South Carolina streams in the Broad River basin through March 2008
Wladmir B. Guimaraes, Toby D. Feaster
2010, Open-File Report 2010-1305
In 2008, the U.S. Geological Survey, in cooperation with the South Carolina Department of Health and Environmental Control, initiated a study to update low-flow statistics at continuous-record streamgaging stations operated by the U.S. Geological Survey in South Carolina. This report presents the low-flow statistics for 23 selected streamgaging stations in...
Analysis and simulation of water-level, specific conductance, and total phosphorus dynamics of the Loxahatchee National Wildlife Refuge, Florida, 1995-2006
Paul Conrads, Edwin A. Roehl Jr.
2010, Scientific Investigations Report 2010-5244
The Arthur R. Marshall Loxahatchee Wildlife Refuge (Refuge) was established in 1951 through a license agreement between the South Florida Water Management District and the U.S. Fish and Wildlife Service (USFWS) as part of the Migratory Bird Conservation Act. Under the license agreement, the State of Florida owns the land...
Geomorphology and depositional subenvironments of Gulf Islands National Seashore, Perdido Key and Santa Rosa Island, Florida
Robert A. Morton, Marilyn C. Montgomery
2010, Open-File Report 2010-1330
The U.S. Geological Survey (USGS) is studying coastal hazards and coastal change to improve our understanding of coastal ecosystems and to develop better capabilities of predicting future coastal change. One approach to understanding the dynamics of coastal systems is to monitor changes in barrier-island subenvironments through time. This involves examining...
Occurrence of organic wastewater-indicator compounds in urban streams of the Atlanta area, Georgia, 2003-2006
Stephen J. Lawrence, Jacob H. LaFontaine
2010, Scientific Investigations Report 2010-5209
Between March 2003 and January 2006, 863 water samples were collected from streams in seven urban watersheds with varying land uses within or near the City of Atlanta, Georgia. Sixty-four sampling sites representing three site types were established in those watersheds. The first type consisted of sites within three watersheds...
Scale-dependent associations of Band-tailed Pigeon counts at mineral sites
Cory T. Overton, Michael L. Casazza, Peter S. Coates
2010, Northwestern Naturalist (91) 299-308
The abundance of Band-tailed Pigeons (Patagioenas fasciata monilis) has declined substantially from historic numbers along the Pacific Coast. Identification of patterns and causative factors of this decline are hampered because habitat use data are limited, and temporal and spatial variability patterns associated with population indices are not known. Furthermore, counts...
Southeast Regional Assessment Project for the National Climate Change and Wildlife Science Center, U.S. Geological Survey
Melinda S. Dalton, Sonya A. Jones
2010, Open-File Report 2010-1213
The Southeastern United States spans a broad range of physiographic settings and maintains exceptionally high levels of faunal diversity. Unfortunately, many of these ecosystems are increasingly under threat due to rapid human development, and management agencies are increasingly aware of the potential effects that climate change will have on these...
Flood-depth frequency relations for rural streams in Alabama, 2003
K.G. Lee, T.S. Hedgecock
2010, Scientific Investigations Report 2010-5066
Equations have been defined for estimating the depth of water for floods having a 67-, 50-, 20-, 10-, 4-, 2-, and 1-percent chance exceedance on rural streams in Alabama. Multiple regression analyses of streamgage data were used to define the equations. Eight basin and climatic characteristics that were computed by...
Public water-supply systems and associated water use in Tennessee, 2005
John A. Robinson, Jaala M. Brooks
2010, Open-File Report 2010-1226
Public water-supply systems in Tennessee provide water to for domestic, industrial, and commercial uses, and municipal services. In 2005, more than 569 public water-supply systems distributed about 920 million gallons per day (Mgal/d) of non-purchased surface water and groundwater to a population of nearly 6 million in Tennessee. Surface-water sources...
Surface-water quality-assurance plan for the USGS Georgia Water Science Center, 2010
Anthony J. Gotvald
2010, Open-File Report 2010-1263
The U.S. Geological Survey requires that each Water Science Center prepare a surface-water quality-assurance plan to describe policies and procedures that ensure high quality surface-water data collection, processing, analysis, computer storage, and publication. The Georgia Water Science Center's standards, policies, and procedures for activities related to the collection, processing, analysis,...
Continuous tidal streamflow, water level, and specific conductance data for Union Creek and the Little Back, Middle, and Front Rivers, Savannah River Estuary, November 2008 to March 2009
Timothy H. Lanier, Paul Conrads
2010, Open-File Report 2010-1169
In the Water Resource Development Act of 1999, the U.S. Congress authorized the deepening of the Savannah Harbor. Additional studies were then identified by the Georgia Ports Authority and other local and regional stakeholders to determine and fully describe the potential environmental effects of deepening the channel. One need that...
Nitrate-N movement in groundwater from the land application of treated municipal wastewater and other sources in the Wakulla Springs springshed, Leon and Wakulla Counties, Florida, 1966-2018
J. Hal Davis, Brian G. Katz, Dale W. Griffin
2010, Scientific Investigations Report 2010-5099
The City of Tallahassee began a pilot study in 1966 at the Southwest Farm sprayfield to determine whether disposal of treated municipal wastewater using center pivot irrigation techniques to uptake nitrate-nitrogen (nitrate-N) is feasible. Based on the early success of this project, a new, larger Southeast Farm sprayfield was opened...
Magnitude and frequency of floods for urban streams in Alabama, 2007
T.S. Hedgecock, K.G. Lee
2010, Scientific Investigations Report 2010-5012
Methods of estimating flood magnitudes for exceedance probabilities of 50, 20, 10, 4, 2, 1, 0.5, and 0.2 percent have been developed for urban streams in Alabama that are not significantly affected by dams, flood detention structures, hurricane storm surge, or substantial tidal fluctuations. Regression relations were developed using generalized...
Occurrence and distribution of organic chemicals and nutrients and comparison of water-quality data from public drinking-water supplies in the Columbia aquifer in Delaware, 2000-08
Betzaida Reyes
2010, Scientific Investigations Report 2010-5206
The U.S. Geological Survey, in cooperation with the Delaware Department of Natural Resources and Environmental Control and the Delaware Geological Survey, conducted a groundwater-quality investigation to (a) describe the occurrence and distribution of selected contaminants, and (b) document any changes in groundwater quality in the Columbia aquifer public water-supply wells...
Contamination movement around a permeable reactive barrier at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 2009
Don A. Vroblesky, Matthew D. Petkewich, Kevin J. Conlon
2010, Scientific Investigations Report 2010-5086
The U.S. Geological Survey and the Naval Facilities Engineering Command Southeast investigated natural and engineered remediation of chlorinated volatile organic compound groundwater contamination at Solid Waste Management Unit 12 at the Naval Weapons Station Charleston, North Charleston, South Carolina, beginning in 2000. In early 2004, groundwater contaminants began moving around...
Aquatic assessment of the Ely Copper Mine Superfund site, Vershire, Vermont
Robert R. Seal II, Richard G. Kiah, Nadine M. Piatak, John M. Besser, James F. Coles, Jane M. Hammarstrom, Denise M. Argue, Denise M. Levitan, Jeffrey R. Deacon, Christopher G. Ingersoll
2010, Scientific Investigations Report 2010-5084
The Ely Mine, which operated from 1821 to 1905, and its area of downstream impact constitute the Ely Copper Mine Superfund site. The site was placed on the National Priorities List in 2001. The mine comprises underground workings, foundations from historical structures, several waste-rock piles, roast beds associated with the...
Reproduction in mallards exposed to dietary concentrations of methylmercury
Gary Heinz, David J. Hoffman, Jon D. Klimstra, Katherine R. Stebbins
2010, Ecotoxicology (19) 977-982
The purpose of this experiment was to use mallards (Anas platyrhynchos) tested under controlled conditions to determine how much harm to reproduction resulted from various concentrations of mercury in eggs. Breeding pairs of mallards were fed a control diet or diets containing 1, 2, 4, or 8 μg/g mercury,...
Report of the River Master of the Delaware River for the period December 1, 2005-November 30, 2006
Bruce E. Krejmas, Gary N. Paulachok, Stephen F. Blanchard
2010, Open-File Report 2011-1177
A Decree of the Supreme Court of the United States, entered June 7, 1954, established the position of Delaware River Master within the U.S. Geological Survey (USGS). In addition, the Decree authorizes diversions of water from the Delaware River Basin and requires compensating releases from certain reservoirs, owned by New...
Epizootic ulcerative syndrome caused by Aphanomyces invadans in captive bullseye snakehead Channa marulius collected from south Florida, USA
Ryan K. Saylor, Debra L. Miller, Mark W. Vandersea, Mark S. Bevelhimer, Pamela J. Schofield, Wayne A. Bennett
2010, Diseases of Aquatic Organisms (88) 169-175
Epizootic ulcerative syndrome (EUS) caused by the oomycete Aphanomyces invadans is an invasive, opportunistic disease of both freshwater and estuarine fishes. Originally documented as the cause of mycotic granulomatosis of ornamental fishes in Japan and as the cause of EUS of fishes in southeast Asia and Australia, this pathogen is also present...
Enumeration of viruses and prokaryotes in deep-sea sediments and cold seeps of the Gulf of Mexico
Christina A. Kellogg
2010, Deep-Sea Research Part II: Topical Studies in Oceanography (57) 2002-2007
Little is known about the distribution and abundance of viruses in deep-sea cold-seep environments. Like hydrothermal vents, seeps support communities of macrofauna that are sustained by chemosynthetic bacteria. Sediments close to these communities are hypothesized to be more microbiologically active and therefore to host higher numbers of viruses than non-seep...
Episodic swell growth inferred from variable uplift of the Cape Verde hotspot islands
R. Ramalho, G. Helffrich, M. Cosca, D. Vance, D. Hoffmann, D.N. Schmidt
2010, Nature Geoscience (3) 774-777
On the Beagle voyage, Charles Darwin first noted the creation and subsidence of ocean islands1, establishing in geology’s infancy that island freeboard changes with time. Hotspot ocean...
Relating the ability of mallards to ingest high levels of sediment to potential contaminant exposure in waterfowl
Gary Heinz, W. Nelson Beyer, David J. Hoffman, Daniel J. Audet
2010, Environmental Toxicology and Chemistry (29) 1621-1624
When waterfowl feed from the bottom of bodies of water, they sometimes ingest sediments along with their food, and this sediment can be a major source of contaminants. Learning how much sediment waterfowl can consume in their diet and still maintain their health would be helpful in assessing potential threats...
Emergency use of groundwater as a backup supply: Quantifying hydraulic impacts and economic benefits
Eric G. Reichard, Zhen Li, Caroline Hermans
2010, Water Resources Research (46)
Groundwater can play an important role in water‐supply emergency planning. A framework is presented for assessing the hydraulic impacts and associated costs of using groundwater as a backup supply when imported‐water deliveries are disrupted, and for quantifying the emergency benefits of groundwater management strategies that enable better response to such...
Rejoinder: Sifting through model space
Dennis M. Heisey, Erik E. Osnas, Paul C. Cross, Damien O. Joly, Julia A. Langenberg, Michael W. Miller
2010, Ecology (91) 3503-3514
Observational data sets generated by complex processes are common in ecology. Traditionally these have been very challenging to analyze because of the limitations of available statistical tools. This seems to be changing, and these are exciting times to be involved with ecological statistics, not just because of the neo-Bayesian revival...
Recent ecological divergence despite migration in sockeye salmon (Oncorhynchus nerka)
Scott A. Pavey, Jennifer L. Nielsen, Troy R. Hamon
2010, Evolution (64) 1773-1783
Ecological divergence may result when populations experience different selection regimes, but there is considerable discussion about the role of migration at the beginning stages of divergence before reproductive isolating mechanisms have evolved. However, detection of past migration is difficult in current populations and tools to differentiate genetic similarities due to...
