Simulation of ground-water flow and solute transport in the Glen Canyon aquifer, East-Central Utah
Geoffrey W. Freethey, Bernard J. Stolp
2010, Scientific Investigations Report 2009-5037
The extraction of methane from coal beds in the Ferron coal trend in central Utah started in the mid-1980s. Beginning in 1994, water from the extraction process was pressure injected into the Glen Canyon aquifer. The lateral extent of the aquifer that could be affected by injection is about 7,600...
Mapping watershed potential to contribute phosphorus from geologic materials to receiving streams, southeastern United States
Silvia Terziotti, Anne B. Hoos, Douglas Harned, Ana Maria Garcia
2010, Scientific Investigations Map 3102
As part of the southeastern United States SPARROW (SPAtially Referenced Regressions On Watershed attributes) water-quality model implementation, the U.S. Geological Survey created a dataset to characterize the contribution of phosphorus to streams from weathering and erosion of surficial geologic materials. SPARROW provides estimates of total nitrogen and phosphorus loads in...
Characteristics of fall chum salmon spawning habitat on a mainstem river in Interior Alaska
Sean E. Burril, Christian E. Zimmerman, James E. Finn
2010, Open-File Report 2010-1164
Chum salmon (Oncorhynchus keta) are the most abundant species of salmon spawning in the Yukon River drainage system, and they support important personal use, subsistence, and commercial fisheries. Chum salmon returning to the Tanana River in Interior Alaska are a significant contribution to the overall abundance of Yukon River chum...
Nutrient concentrations, loads, and yields in the Eucha-Spavinaw Basin, Arkansas and Oklahoma, 2002-09
Rachel A. Esralew, Robert L. Tortorelli
2010, Scientific Investigations Report 2010-5119
The city of Tulsa, Oklahoma, uses Lake Eucha and Spavinaw Lake in the Eucha-Spavinaw Basin in northwestern Arkansas and northeastern Oklahoma for public water supply. The city has spent millions of dollars over the last decade to eliminate taste and odor problems in the drinking water from the Eucha-Spavinaw system,...
A geologic and anthropogenic journey from the Precambrian to the new energy economy through the San Juan volcanic field
Douglas B. Yager, Alison Burchell Alison, Raymond H. Johnson
2010, Book chapter, Through the generations: Geologic and anthropogenic field excursions in the Rocky Mountains from modern to ancient
The San Juan volcanic field comprises 25,000 km2 of intermediate composition mid-Tertiary volcanic rocks and dacitic to rhyolitic calderas including the San Juan–Uncompahgre and La Garita caldera-forming super-volcanoes. The region is famous for the geological, ecological, hydrological, archeological, and climatological diversity. These characteristics supported ancestral Puebloan populations....
A Reconnaissance of selected organic compounds in streams in tribal lands in Central Oklahoma, January-February 2009
Carol Becker
2010, Scientific Investigations Report 2010-5110
The U.S. Geological Survey worked in cooperation with the U.S. Environmental Protection Agency and the Kickapoo Tribe of Oklahoma on two separate reconnaissance projects carried out concurrently. Both projects entailed the use of passive samplers as a sampling methodology to investigate the detection of selected organic compounds at stream sites...
A high-resolution land-use map; Nogales, Sonora, Mexico
Laura M. Norman, Miguel L. Villarreal, Cynthia S.A. Wallace, Claudia Z. Gil Anaya, Israel Diaz Arcos, Floyd Gray
2010, Open-File Report 2010-1156
The cities of Nogales, Sonora, and Nogales, Arizona, are located in the Ambos Nogales Watershed, a topographically irregular bowl-shaped area with a northward gradient. Throughout history, residents in both cities have been affected by flooding. Currently, the primary method for regulating this runoff is to build a series of detention...
Effects of urbanization on stream ecosystems along an agriculture-to-urban land-use gradient, Milwaukee to Green Bay, Wisconsin, 2003-2004
Kevin D. Richards, Barbara C. Scudder, Faith A. Fitzpatrick, Jeffery J. Steuer, Amanda H. Bell, Marie C. Peppler, Jana S. Stewart, Mitchell A. Harris
2010, Scientific Investigations Report 2006-5101-E
In 2003 and 2004, 30 streams near Milwaukee and Green Bay, Wisconsin, were part of a national study by the U.S. Geological Survey to assess urbanization effects on physical, chemical, and biological characteristics along an agriculture-to-urban land-use gradient. A geographic information system was used to characterize natural landscape features that...
Concentrations and estimated loads of nutrients, mercury, and polychlorinated biphenyls in selected tributaries to Lake Michigan, 2005-6
Stephen M. Westenbroek
2010, Scientific Investigations Report 2010-5029
The Lake Michigan Mass Balance Project (LMMBP) measured and modeled the concentrations of environmentally persistent contaminants in air, river and lake water, sediment, and fish and bird tissues in and around Lake Michigan for an 18-month period spanning 1994-95. Tributary loads were calculated as part of the LMMBP. The work...
West Florida Shelf: A natural laboratory for the study of ocean acidificiation
Pamela Hallock, Lisa L. Robbins, Rebekka A. Larson, Tanya Beck, Patrick Schwing, Michael Martinez-Colon, Brad Gooch
2010, Open-File Report 2010-1134
Declining oceanic pH and carbonate-ion concentrations are well-known consequences of increased atmospheric and surface-ocean partial pressure of carbon dioxide (pCO2). The possible subject of shifts in seawater carbonate chemistry on biocalcification and survival rates of marine organisms provides questions amenable to both experimental and field study (Kleypas and Langdon, 2006)....
Trace-metal concentrations in African dust: Effects of long-distance transport and implications for human health
Virginia Garrison, Paul Lamothe, Suzette Morman, Geoffrey S. Plumlee
Robert Gilkes, Nattaporn Prakongkep, editor(s)
2010, Conference Paper, 19th World congress of soil science, soil solutions for a changing world
The Sahara and Sahel lose billions of tons of eroded mineral soils annually to the Americas and Caribbean, Europe and Asia via atmospheric transport. African dust was collected from a dust source region (Mali, West Africa) and from downwind sites in the Caribbean [Trinidad-Tobago (TT) and U.S. Virgin Islands (VI)]...
The 2007 M5.4 Alum Rock, California, earthquake: Implications for future earthquakes on the central and southern Calaveras Fault
David H. Oppenheimer, William H. Bakun, Tom Parsons, Robert W. Simpson, John Boatwright, R. A. Uhrhammer
2010, Journal of Geophysical Research Solid Earth (115)
[1] The similarity of seismograms recorded by two seismic stations demonstrate that the 31 October 2007 moment magnitude M5.4 Alum Rock earthquake is a repeat of a 1955 ML5.5 earthquake. Both occurred on Oppenheimer et al.'s (1990) Zone V “stuck patch” on the central Calaveras fault, providing new support for their model...
Determination of baseline periods of record for selected streamflow-gaging stations in and near Oklahoma for use in modeling applications
Rachel A. Esralew
2010, Scientific Investigations Report 2010-5106
Use of historical streamflow data from a least-altered period of record can be used in calibration of various modeling applications that are used to characterize least-altered flow and predict the effects of proposed streamflow alteration. This information can be used to enhance water-resources planning. A baseline period of record was...
Effects of including surface depressions in the application of the Precipitation-Runoff Modeling System in the Upper Flint River Basin, Georgia
Roland J. Viger, Lauren E. Hay, John W. Jones, Gary R. Buell
2010, Scientific Investigations Report 2010-5062
This report documents an extension of the Precipitation Runoff Modeling System that accounts for the effect of a large number of water-holding depressions in the land surface on the hydrologic response of a basin. Several techniques for developing the inputs needed by this extension also are presented. These techniques include...
Application of SEAWAT to select variable-density and viscosity problems
Alyssa M. Dausman, Christian D. Langevin, Danny T. Thorne Jr., Michael C. Sukop
2010, Scientific Investigations Report 2009-5028
SEAWAT is a combined version of MODFLOW and MT3DMS, designed to simulate three-dimensional, variable-density, saturated groundwater flow. The most recent version of the SEAWAT program, SEAWAT Version 4 (or SEAWAT_V4), supports equations of state for fluid density and viscosity. In SEAWAT_V4, fluid density can be calculated as a function of...
Sea-floor geology and character offshore of Rocky Point, New York
L.J. Poppe, K.Y. McMullen, S.D. Ackerman, D.S. Blackwood, B.J. Irwin, J.D. Schaer, P.G. Lewit, E. F. Doran
2010, Open-File Report 2010-1007
The U.S. Geological Survey (USGS), the Connecticut Department of Environmental Protection, and the National Oceanic and Atmospheric Administration (NOAA) have been working cooperatively to interpret surficial sea-floor geology along the coast of the Northeastern United States. NOAA survey H11445 in eastern Long Island Sound, offshore of Plum Island, New York,...
Water-level database update for the Death Valley regional groundwater flow system, Nevada and California, 1907-2007
Michael T. Pavelko
2010, Data Series 519
The water-level database for the Death Valley regional groundwater flow system in Nevada and California was updated. The database includes more than 54,000 water levels collected from 1907 to 2007, from more than 1,800 wells. Water levels were assigned a primary flag and multiple secondary flags that describe hydrologic conditions...
Lead isotope database of unpublished results from sulfide mineral occurrences — California, Idaho, Oregon, and Washington
S. E. Church
2010, Open-File Report 2010-1157
The Pb isotope database for sulfide deposits and occurrences in the Western United States was funded by the Mineral Resources Program, U.S. Geological Survey (USGS). Reports on Pb isotope data from Alaska were published in Church and others (1987a) and Gaccetta and Church (1989). The primary objectives of the project...
Delineation and Prediction Uncertainty of Areas Contributing Recharge to Selected Well Fields in Wetland and Coastal Settings, Southern Rhode Island
Paul J. Friesz
2010, Scientific Investigations Report 2010-5060
Areas contributing recharge to four well fields in two study sites in southern Rhode Island were delineated on the basis of steady-state groundwater-flow models representing average hydrologic conditions. The wells are screened in sand and gravel deposits in wetland and coastal settings. The groundwater-flow models were calibrated by inverse modeling...
Simulation of the shallow groundwater-flow system near the Hayward Airport, Sawyer County, Wisconsin
Randall J. Hunt, Paul F. Juckem, Charles P. Dunning
2010, Scientific Investigations Report 2010-5049
There are concerns that removal and trimming of vegetation during expansion of the Hayward Airport in Sawyer County, Wisconsin, could appreciably change the character of a nearby cold-water stream and its adjacent environs. In cooperation with the Wisconsin Department of Transportation, a two-dimensional, steady-state groundwater-flow model of the shallow groundwater-flow...
Kiholo Bay, Hawaii, earthquake sequence of 2006: Relationship of the main shock slip with locations and source parameters of aftershocks
Takuji Yamada, Paul G. Okubo, Cecily J. Wolfe
2010, Journal of Geophysical Research B: Solid Earth (115)
We study the source process of the Kīholo Bay earthquake (MW 6.7), which occurred beneath the northwest part of the Island of Hawai‘i on 15 October 2006, and static stress drops of small earthquakes that occurred in 2006 and 2007 around the main shock including aftershocks. We relocate the aftershocks to...
Evaluating the feasibility of modeling the subsurface structure of two volcanic units in drill holes UE-18r and ER-EC-2a using existing magnetic data, Nevada Test Site
G. A. Phelps
2010, Open-File Report 2010-1112
The magnetic properties of two volcanic units encountered in two drill holes, ER-EC-2a and UE18r, located in the vicinity of the Nevada Test Site, were investigated to determine if the units were significantly more magnetic than overlying units and, thus, detectable by using aeromagnetic data. Magnetic-susceptibility measurements were made on...
Effects of Glen Canyon Dam discharges on water velocity and temperatures at the confluence of the Colorado and Little Colorado Rivers and implications for habitat for young-of-year humpback chub (Gila cypha)
Frank R. Protiva, Barbara E. Ralston, Dennis M. Stone, Keith A. Kohl, Michael D. Yard, G. Allen Haden
2010, Open-File Report 2010-1137
Water velocity and temperature are physical variables that affect the growth and survivorship of young-of-year (YOY) fishes. The Little Colorado River, a tributary to the Colorado River in Grand Canyon, is an important spawning ground and warmwater refuge for the endangered humpback chub (Gila cypha) from the colder mainstem Colorado...
Fort Collins Science Center-Fiscal year 2009 science accomplishments
Juliette T. Wilson (compiler)
2010, Open-File Report 2010-1148
Public land and natural resource managers in the United States are confronted with increasingly complex decisions that have important ramifications for both ecological and human systems. The scientists and technical professionals at the U.S. Geological Survey Fort Collins Science Center?many of whom are at the forefront of their fields?possess a...
Surficial geologic map of the Amboy 30' x 60' quadrangle, San Bernardino County, California
David R. Bedford, David M. Miller, Geoffrey A. Phelps
2010, Scientific Investigations Map 1309
The surficial geologic map of the Amboy 30' x 60' quadrangle presents characteristics of surficial materials for an area of approximately 5,000 km2 in the eastern Mojave Desert of southern California. This map consists of new surficial mapping conducted between 2000 and 2007, as well as compilations from previous surficial...
