Comparison of two methods for estimating base flow in selected reaches of the South Platte River, Colorado
Joseph P. Capesius, L. Rick Arnold
2012, Scientific Investigations Report 2012-5034
The U.S. Geological Survey, in cooperation with the Colorado Water Conservation Board, compared two methods for estimating base flow in three reaches of the South Platte River between Denver and Kersey, Colorado. The two methods compared in this study are the Mass Balance and the Pilot Point methods. Base-flow estimates...
Modification of selected South Carolina bridge-scour envelope curves
Stephen T. Benedict, Andral W. Caldwell
2012, Scientific Investigations Report 2012-5029
Historic scour was investigated at 231 bridges in the Piedmont and Coastal Plain physiographic provinces of South Carolina by the U.S. Geological Survey in cooperation with the South Carolina Department of Transportation. These investigations led to the development of field-derived envelope curves that provided supplementary tools to assess the potential...
Flooded area and plant zonation in isolated wetlands in well fields in the Northern Tampa Bay Region, Florida, following reductions in groundwater-withdrawal rates
Kim H. Haag, William R. Pfeiffer
2012, Scientific Investigations Report 2012-5039
The extent and duration of the flooded area were compared in two reference wetlands and nine wetlands in well fields in the northern Tampa Bay region, Florida, to determine whether reductions in well-field groundwater-withdrawal rates resulted in increases in wetland flooded area. Flooded area, expressed as a percentage of the...
Copper pellets simulating oral exposure to copper ammunition: Absence of toxicity in American kestrels (Falco sparverius)
J. Christian Franson, Lesanna L. Lahner, Carol U. Meteyer, Barnett A. Rattner
2012, Archives of Environmental Contamination and Toxicology (62) 145-153
To evaluate the potential toxicity of copper (Cu) in raptors that may consume Cu bullets, shotgun pellets containing Cu, or Cu fragments as they feed on wildlife carcasses, we studied the effects of metallic Cu exposure in a surrogate, the American kestrel (Falco sparverius). Sixteen kestrels were orally administered 5...
Database for USGS Map I-1970 - Map showing the thickness and character of Quaternary sediments in the glaciated United States east of the Rocky Mountains
D. R. Soller, P.H. Packard, C.P. Garrity
2012, Data Series 656
No abstract available....
Calculating weighted estimates of peak streamflow statistics
Timothy A. Cohn, Charles Berenbrock, Julie E. Kiang, Mason Jr.
2012, Fact Sheet 2012-3038
According to the Federal guidelines for flood-frequency estimation, the uncertainty of peak streamflow statistics, such as the 1-percent annual exceedance probability (AEP) flow at a streamgage, can be reduced by combining the at-site estimate with the regional regression estimate to obtain a weighted estimate of the flow statistic. The procedure...
Optimum swimming pathways of fish spawning migrations in rivers
Brandon McElroy, Aaron DeLonay, Robert Jacobson
2012, Ecology (93) 29-34
Fishes that swim upstream in rivers to spawn must navigate complex fluvial velocity fields to arrive at their ultimate locations. One hypothesis with substantial implications is that fish traverse pathways that minimize their energy expenditure during migration. Here we present the methodological and theoretical developments necessary to test this and...
Estimated trichloroethene transformation rates due to naturally occurring biodegradation in a fractured-rock aquifer
Francis H. Chapelle, Pierre J. Lacombe, Paul M. Bradley
2012, Remediation Journal (22) 7-20
Rates of trichloroethene (TCE) mass transformed by naturally occurring biodegradation processes in a fractured rock aquifer underlying a former Naval Air Warfare Center (NAWC) site in West Trenton, New Jersey, were estimated. The methodology included (1) dividing the site into eight elements of equal size and vertically integrating observed concentrations...
Characterizing mercury concentrations and fluxes in a Coastal Plain watershed: Insights from dynamic modeling and data
H.E. Golden, C.D. Knightes, P.A. Conrads, G. M. Davis, T.D. Feaster, C.A. Journey, S.T. Benedict, M. E. Brigham, P. M. Bradley
2012, Journal of Geophysical Research (117)
Mercury (Hg) is one of the leading water quality concerns in surface waters of the United States. Although watershed-scale Hg cycling research has increased in the past two decades, advances in modeling watershed Hg processes in diverse physiographic regions, spatial scales, and land cover types are needed. The goal of...
Bibliography of groundwater resources of the glacial aquifer systems in Washington, Idaho, and northwestern Montana, 1905-2011
Sue C. Kahle, Zoe O. Futornick
2012, Open-File Report 2012-1053
The U.S. Geological Survey Groundwater Resources Program is undertaking a series of regional groundwater availability studies to improve our understanding of groundwater availability in major aquifers across the Nation. One of the objectives of the Glacial Principal Aquifers study (proposed) is to provide information on the occurrence of groundwater in...
Integrated geophysical surveys for mapping lati-andesite intrusive bodies, Chino Valley, Arizona
Hesham El-Kaliouby, Ben K. Sternberg, John P. Hoffmann, V.E. Langenheim
2012, Conference Paper, 25th Symposium on the Application of Geophysics to Engineering and Environmental Problems 2012 : (SAGEEP 2012) : Tucson, Arizona, USA, 25-29 March 2012
Three different geophysical methods (magnetic, transient electromagnetic (TEM) and gravity) were used near Chino Valley, Arizona, USA in order to map a suspected lati-andesite intrusive body (plug) previously located by interpretation of aeromagnetic data. The magnetic and TEM surveys provided the best indication of the location and depth of the...
On the reported ionospheric precursor of the 1999 Hector Mine, California earthquake
Jeremy N. Thomas, Jeffrey J. Love, Attila Komjathy, Olga P. Verkhoglyadova, Mark Butala, Nicholas Rivera
2012, Geophysical Research Letters (39)
Using Global Positioning System (GPS) data from sites near the 16 Oct. 1999 Hector Mine, California earthquake, Pulinets et al. (2007) identified anomalous changes in the ionospheric total electron content (TEC) starting one week prior to the earthquake. Pulinets (2007) suggested that precursory phenomena of this type could be useful...
Heterogeneous detection probabilities for imperiled Missouri River fishes: implications for large-river monitoring programs
J.T. Schloesser, Craig P. Paukert, W.J. Doyle, Tracy D. Hill, K.D. Steffensen, Vincent H. Travnichek
2012, Endangered Species Research (16) 211-224
Occupancy modeling was used to determine (1) if detection probabilities (p) for 7 regionally imperiled Missouri River fishes (Scaphirhynchus albus, Scaphirhynchus platorynchus, Cycleptus elongatus, Sander canadensis, Macrhybopsis aestivalis, Macrhybopsis gelida, and Macrhybopsis meeki) differed among gear types (i.e. stationary gill nets, drifted trammel nets, and otter trawls), and (2) how...
Groundwater quality in the San Fernando--San Gabriel groundwater basins, California
Justin T. Kulongoski, Kenneth Belitz
2012, Fact Sheet 2011-3139
Groundwater provides more than 40 percent of California's drinking water. To protect this vital resource, the State of California created the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The Priority Basin Project of the GAMA Program provides a comprehensive assessment of the State's groundwater quality and increases public access to...
Status of groundwater quality in the San Fernando--San Gabriel study unit, 2005--California GAMA Priority Basin Project
Michael Land, Justin T. Kulongoski, Kenneth Belitz
2012, Scientific Investigations Report 2011-5206
Groundwater quality in the approximately 460-square-mile San Fernando--San Gabriel (FG) study unit was investigated as part of the Priority Basin Project of the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The study area is in Los Angeles County and includes Tertiary-Quaternary sedimentary basins situated within the Transverse Ranges of southern...
Calculation of hydrocarbon-in-place in gas and gas-condensate reservoirs - Carbon dioxide sequestration
Mahendra K. Verma
2012, Open-File Report 2012-1033
The Energy Independence and Security Act of 2007 (Public Law 110-140) authorized the U.S. Geological Survey (USGS) to conduct a national assessment of geologic storage resources for carbon dioxide (CO2), requiring estimation of hydrocarbon-in-place volumes and formation volume factors for all the oil, gas, and gas-condensate reservoirs within the U.S....
The Cottonwood Lake study area, a long-term wetland ecosystem monitoring site
David M. Mushet, Ned H. Euliss Jr.
2012, Fact Sheet 2012-3040
The Cottonwood Lake study area is one of only three long-term wetland ecosystem monitoring sites in the prairie pothole region of North America; the other two are Orchid Meadows in South Dakota and St. Denis in Saskatchewan. Of the three, Cottonwood Lake has, by far, the longest continuous data-collection record....
The regional abundance and size distribution of lakes and reservoirs in the United States and implication for estimates of global lake extent
Cory P. McDonald, Jennifer Rover, Edward G. Stets, Robert G. Striegl
2012, Limnology and Oceanography (57) 597-606
We analyzed complete geospatial data for the 3.5 million lakes and reservoirs larger than 0.001 km2, with a combined surface area of 131,000 km2, in the contiguous United States (excluding the Laurentian Great Lakes) and identified their regional distribution characteristics. For Alaska, we also analyzed (1) incomplete data that suggest...
Deer Flat National Wildlife Refuge: Lake Lowell water based recreation data summary
Rudy M. Schuster
2012, Report
Introduction: Established in 1909, Deer Flat National Wildlife Refuge is one of the oldest refuges in the National Wildlife Refuge System. The Refuge has two units, Lake Lowell and the Snake River Islands. The Lake Lowell Unit is 10,636 acres and includes the almost 9,000-acre Lake Lowell and surrounding lands....
Data collection and compilation for a geodatabase of groundwater, surface-water, water-quality, geophysical, and geologic data, Pecos County Region, Texas, 1930-2011
Daniel K. Pearson, Johnathan R. Bumgarner, Natalie A. Houston, Gregory P. Stanton, Andrew Teeple, Jonathan V. Thomas
2012, Data Series 678
The U.S. Geological Survey, in cooperation with Middle Pecos Groundwater Conservation District, Pecos County, City of Fort Stockton, Brewster County, and Pecos County Water Control and Improvement District No. 1, compiled groundwater, surface-water, water-quality, geophysical, and geologic data for site locations in the Pecos County region, Texas, and developed a...
Database for volcanic processes and geology of Augustine Volcano, Alaska
Jacqueline McIntire, David W. Ramsey, Evan Thoms, Richard B. Waitt, James E. Beget
2012, Data Series 677
Augustine Island (volcano) in lower Cook Inlet, Alaska, has erupted repeatedly in late-Holocene and historical times. Eruptions typically beget high-energy volcanic processes. Most notable are bouldery debris avalanches containing immense angular clasts shed from summit domes. Coarse deposits of these avalanches form much of Augustine's lower flanks. This geologic map...
The role of fire-return interval and season of burn in snag dynamics in a south Florida slash pine forest
John D. Lloyd, Gary L. Slater, James R. Snyder
2012, Fire Ecology (8) 18-31
Standing dead trees, or snags, are an important habitat element for many animal species. In many ecosystems, fire is a primary driver of snag population dynamics because it can both create and consume snags. The objective of this study was to examine how variation in two key components of...
EAARL coastal topography--North Shore, Lake Pontchartrain, Louisiana, 2010
J.M. Bonisteel-Cormier, Amar Nayegandhi, Xan Fredericks, C. W. Wright, J. C. Brock, D.B. Nagle, Saisudha Vivekanandan, J.A. Barras
2012, Data Series 674
This DVD contains lidar-derived coastal topography GIS datasets of a portion of the north shore of Lake Pontchartrain, Louisiana. These datasets were acquired on February 28, March 1, and March 5, 2010....
Surface Mass Balance of the Columbia Glacier, Alaska, 1978 and 2010 Balance Years
Shad O’Neel
2012, Data Series 676
Although Columbia Glacier is one of the largest sources of glacier mass loss in Alaska, surface mass balance measurements are sparse, with only a single data set available from 1978. The dearth of surface mass-balance data prohibits partitioning of the total mass losses between dynamics and surface forcing; however, the...
An online database for IHN virus in Pacific Salmonid fish: MEAP-IHNV
Gael Kurath
2012, Fact Sheet 2012-3027
The MEAP-IHNV database provides access to detailed data for anyone interested in IHNV molecular epidemiology, such as fish health professionals, fish culture facility managers, and academic researchers. The flexible search capabilities enable the user to generate various output formats, including tables and maps, which should assist users in developing and...
