Evaluacion de los recursos potenciales del petroleo y gas, en Centro y Suramerica [Evaluation of potential petroleum and gas resources in Central and South America]
C.S. Schenk
2001, Fact Sheet 038-01
El Servicio Geológico de los Estados Unidos (USGS, por sus siglas en inglés) completó recientemente un estudio evaluativo de recursos potenciales de petróleo y gas en 130 provincias de petróleo seleccionadas en diferentes partes del mundo (USGS, 2000). De estas 130 provincias, 23 se encuentran en Suramérica, Centroamérica, y la...
Water-quality monitoring of Sweetwater Reservoir
Michael Majewski
2001, Fact Sheet 070-01
Sweetwater Authority is concerned with the quality of water it provides to its customers. Results from the water-quality monitoring study that the USGS is conducting in the Sweetwater watershed show that the contaminant concentrations in bed sediments, water, and air are reflected in increased urbanization. The bed sediments show the...
Estimativas de possiveis recursos de petroleo e gas na America Central e na America do Sul [Estimates of possible petroleum and gas resources in Central American and South America]
C.S. Schenk
2001, Fact Sheet 039-01
O U.S. Geological Survey recentemente completou estimativas de possíveis recursos de petróleo e gás em 130 áreas petrolíferas pré-determinadas no mundo (USGS, 2000). Vinte e três destas áreas ficam na América do Sul, na América Central, e no Caribe (fig. 1). Os resultados estão apresentados na tabela 1. Nas 23...
Characterization of surface-water quality based on real-time monitoring and regression analysis, Quivira National Wildlife Refuge, south-central Kansas, December 1998 through June 2001
Victoria G. Christensen
2001, Water-Resources Investigations Report 2001-4248
Because of the considerable wildlife benefits offered by the Quivira National Wildlife Refuge in south-central Kansas, there is a desire to ensure suitable water quality. To assess the quality of water flowing from Rattlesnake Creek into the refuge, the U.S. Geological Survey collected periodic water samples from December 1998 through...
PCBs in tissue of fish from the Spokane River, Washington, 1999
Dorene E. MacCoy
2001, Fact Sheet 067-01
Several studies over the past 6 years have indicated that elevated concentrations of polychlorinated biphenyls (PCBs) in the Spokane River, Washington, are a potential hazard to human and aquatic health. To help address these concerns, fish were collected from the Spokane River in 1999 and analyzed for PCBs for a...
Estimated age and source of the young fraction of ground water at the Idaho National Engineering and Environmental Laboratory
Eurybiades Busenberg, Niel Plummer, R. C. Bartholomay
2001, Water-Resources Investigations Report 2001-4265
No abstract available....
Improving water quality in Sweetwater Reservoir, San Diego County, California; sources and mitigation strategies for trihalomethane (THM)-forming carb
M.S. Fram, B.A. Bergamaschi, Roger Fujii
2001, Fact Sheet 112-01
Debris flows from failures of neoglacial-age moraine dams in the Three Sisters and Mount Jefferson Wilderness areas, Oregon
J. E. O’Connor, J. H. Hardison, J. E. Costa
2001, Professional Paper 1606
The highest concentration of lakes dammed by Neoglacial moraines in the conterminous United States is in the Mount Jefferson and Three Sisters Wilderness Areas in central Oregon. Between 1930 and 1980, breakouts of these lakes have resulted in 11 debris flows. The settings and sequences of events leading to breaching...
Historic trail map of the Trinidad 1° x 2° quadrangle, southern Colorado
G. R. Scott
2001, IMAP 2745
No abstract available....
Geologic map of the Jasper Quadrangle, Newton and Boone counties, Arkansas
M.R. Hudson, K.E. Murray, Deborah Pezzutti
2001, Miscellaneous Field Studies Map 2356
This digital geologic map compilation presents new polygon (i.e., geologic map unit contacts), line (i.e., fault, fold axis, and structure contour), and point (i.e., structural attitude, contact elevations) vector data for the Jasper 7 1/2' quadrangle in northern Arkansas. The map database, which is at 1:24,000-scale resolution, provides geologic...
Ground-water flow to Death Valley, as inferred from the chemistry and geohydrology of selected springs in Death Valley National Park, California and Nevada
William C. Steinkampf, William L. Werrell
2001, Water-Resources Investigations Report 98-4114
Death Valley lies downgradient from adjacent valleys to the north, south, east, and west in California and Nevada, and is the site of substantial ground-water discharge. The sources of the discharging waters have been discussed by several investigators in the past and are of heightened concern because of the potential disposal of high-level radioactive waste at Yucca...
Geohydrology and limnology of Walden Pond, Concord, Massachusetts
John A. Colman, Paul J. Friesz
2001, Water-Resources Investigations Report 2001-4137
The trophic ecology and ground-water contributing area of Walden Pond, in Concord and Lincoln, Mass., were investigated by the U.S. Geological Survey in cooperation with the Massachusetts Department of Environmental Management from April 1997 to July 2000. Bathymetric investigation indicated that Walden Pond (24.88 hectares), a glacial kettle-hole lake with...
Geochemistry of the Madison and Minnelusa aquifers in the Black Hills area, South Dakota
Cheryl A. Naus, Daniel G. Driscoll, Janet M. Carter
2001, Water-Resources Investigations Report 2001-4129
The Madison and Minnelusa aquifers are two of the most important aquifers in the Black Hills area because of utilization for water supplies and important influences on surface-water resources resulting from large springs and streamflow- loss zones. Examination of geochemical information provides a better understanding of the complex flow systems...
Distribution of arsenic in water and streambed sediments, Cook Inlet basin, Alaska
Roy L. Glass, Steven A. Frenzel
2001, Fact Sheet 083-01
Mineral resources: Out of the ground... into our daily lives
Dave Frank, Judy Weathers, John Galloway
2001, Open-File Report 2001-360
Minerals and mineral resources are a part of our everyday lives. This poster depicts a home and shows the different mineral(s) and mineral materials used to make the various products found in the average home....
Economic and environmental evaluations of extractable coal resources conducted by the U. S. Geological Survey
M.S. Ellis, T.J. Rohrbacher, M.D. Carter, C. L. Molnia, L. M. Osmonson, D.C. Scott
2001, Fact Sheet 109-01
The Economic and Environmental Evaluations of Extractable Coal Resources (E4CR) project integrates economic analyses of extractable coal resources with environmental and coal quality considerations in order to better understand the contribution that coal resources can make to help meet the Nation’s future energy needs. The project utilizes coal resource information...
New mapping techniques help assess the health of Hawaii's coral reefs
M.E. Field, P.S. Chavez Jr., K.R. Evans, S.A. Cochran
2001, Fact Sheet 084-01
The U.S. Geological Survey (USGS) is working closely with academic institutions and state and Federal agencies to assess the factors that affect the health of Hawaii's and our Nation's coral reefs. In order to establish a basis from which scientists can objectively detect changes in reef health, the USGS and...
What is the Ohio Gap Analysis Program (GAP)?
S.A. Covert, Melissa Haltuch, Troy Wilson
2001, Fact Sheet 093-01
The Gap Analysis Program (GAP) is a program for identifying the degree to which native species and natural communities are represented in present-day conservation lands. Those areas where unique biological communities and conservation lands do not overlap constitute gaps in our conservation effort.GAP aids in the protection of biodiversity through...
Mercury in U.S. coal; abundance, distribution, and modes of occurrence
Susan J. Tewalt, Linda J. Bragg, Robert B. Finkelman
2001, Fact Sheet 095-01
The U.S. Geological Survey (USGS) has compiled a nationwide coal information database over the last 25 years. A subset of the data, called COALQUAL, contains analyses of over 7,000 coal samples that have been collected or calculated to represent the entire thickness of a coal bed in the ground. The...
Evaluating the effects of urbanization and land-use planning using ground-water and surface-water models
R. J. Hunt, J. J. Steuer
2001, Fact Sheet 102-01
Why are the effects of urbanization a concern? As the city of Middleton, Wisconsin, and its surroundings continue to develop, the Pheasant Branch watershed (fig.l) is expected to undergo urbanization. For the downstream city of Middleton, urbanization in the watershed can mean increased flood peaks, water volume and pollutant loads....
National Atlas of the United States Maps
Water Resources Division, U.S. Geological Survey
2001, Fact Sheet 086-01
The "National Atlas of the United States of America®", published by the U.S. Geological Survey (USGS) in 1970, is out of print, but many of its maps can be purchased separately. Maps that span facing pages in the atlas are printed on one sheet. Maps dated after 1970 and before...
The U. S. Geological Survey Chesapeake Bay Science Program
S.W. Phillips
2001, Fact Sheet 125-01
Selected laboratory evaluations of the whole-water sample-splitting capabilities of a prototype fourteen-liter Teflon churn splitter
A. J. Horowitz, J.J. Smith, K. A. Elrick
2001, Open-File Report 2001-386
A prototype 14-L Teflon? churn splitter was evaluated for whole-water sample-splitting capabilities over a range of sediment concentratons and grain sizes as well as for potential chemical contamination from both organic and inorganic constituents. These evaluations represent a 'best-case' scenario because they were performed in the controlled environment of a...
GEODE (Geo-Data Explorer) - A U.S. Geological Survey Application for Data Retrieval, Display, and Analysis through the Internet
Marc Levine, Adam Schultz
2001, Fact Sheet 132-01
GEODE (Geo-Data Explorer) is a free service offered by the U.S. Geological Survey (USGS) on the Internet at http://geode.usgs.gov (fig. 1). It provides digital geographically referenced data to the desktop computers of any user, including policymakers, land and resource managers, educators, industries, and private citizens. The ultimate goal of GEODE...
Bedrock geology in the vicinity of the Rockland Avenue well site, Maynard, Massachusetts
Gregory J. Walsh
2001, Open-File Report 2001-354
