Thermal Maturity Patterns (CAI and %Ro) in Upper Ordovician and Devonian Rocks of the Appalachian Basin: A Major Revision of USGS Map I-917-E Using New Subsurface Collections
John E. Repetski, Robert T. Ryder, David J. Weary, Anita G. Harris, Michael H. Trippi
2008, Scientific Investigations Map 3006
The conodont color alteration index (CAI) introduced by Epstein and others (1977) and Harris and others (1978) is an important criterion for estimating the thermal maturity of Ordovician to Mississippian rocks in the Appalachian basin. Consequently, the CAI isograd maps of Harris and others (1978) are commonly used by geologists...
Potentiometric surface of the upper and lower aquifers of the North Coast Limestone aquifer system and hydrologic conditions in the Arecibo-Manatí area, Puerto Rico, November 27-December 1, 2006
Jose M. Rodriguez, Fernando Gómez-Gómez
2008, Scientific Investigations Map 3030
A ground-water level synoptic survey of the limestone aquifer in the Arecibo to Manati area, Puerto Rico, was conducted from November 27 through December 1, 2006 by the U.S. Geological Survey in cooperation with the Puerto Rico Department of Natural and Environmental Resources. The purpose of the study was to...
Ground-water, surface-water, and water-chemistry data, Black Mesa area, northeastern Arizona— 2006-07
Margot Truini, J. P. Macy
2008, Open-File Report 2008-1324
The N aquifer is the major source of water in the 5,400 square-mile Black Mesa area in northeastern Arizona. Availability of water is an important issue in northeastern Arizona because of continued water requirements for industrial and municipal use and the needs of a growing population. Precipitation in the Black...
Historical Ground-Water Development in the Salinas Alluvial Fan Area, Salinas, Puerto Rico, 1900-2005
Jose M. Rodriguez, Fernando Gómez-Gómez
2008, Scientific Investigations Map 3032
The Salinas alluvial fan area has historically been one of the most intensively used agricultural areas in the South Coastal Plain of Puerto Rico. Changes in agricultural practices and land use in the Salinas alluvial fan have also caused changes in the geographic distribution of ground-water withdrawals from the alluvial...
Geologic Map of the Helen Planitia Quadrangle (V-52), Venus
Ivan Lopez, Vicki L. Hansen
2008, Scientific Investigations Map 3026
The Magellan spacecraft orbited Venus from August 10, 1990, until it plunged into the Venusian atmosphere on October 12, 1994. Magellan Mission objectives included (1) improving the knowledge of the geological processes, surface properties, and geologic history of Venus by analysis of surface radar characteristics, topography, and morphology and (2)...
Evaluation of floodplain modifications to reduce the effect of floods using a two-dimensional hydrodynamic model of the Flint River at Albany, Georgia
Jonathan W. Musser
2008, Scientific Investigations Report 2008-5223
Potential flow characteristics of future flooding along a 4.8-mile reach of the Flint River in Albany, Georgia, were simulated using recent digital-elevation-model data and the U.S. Geological Survey finite-element surface-water modeling system for two-dimensional flow in the horizontal plane (FESWMS-2DH). The model was run at four water-surface altitudes at the...
Davis Pond freshwater prediversion biomonitoring study: freshwater fisheries and eagles
Jill A. Jenkins, E. Beth Bourgeois, Clint W. Jeske
2008, Scientific Investigations Report 2008-5067
In January 2001, the construction of the Davis Pond freshwater diversion structure was completed by the U.S. Army Corps of Engineers. The diversion of freshwater from the Mississippi River is intended to mitigate saltwater intrusion from the Gulf of Mexico and to lessen the concomitant loss of wetland areas. In...
Biological communities and geomorphology of patch reefs in Biscayne National Park, Florida, U.S.A.
Ilsa B. Kuffner, John Brock, Rikki Grober-Dunsmore, T. Don Hickey, Victor Bonito, Jeremy E. Bracone, C. Wayne Wright
2008, Open-File Report 2008-1330
Coral reef ecosystem management benefits from continual, quantitative assessment of the resources being managed, plus assessment of factors that affect distribution patterns of organisms in the ecosystem. In this study, we investigated the relationships among physical, benthic, and fish variables in effort to help explain the distribution patterns of ecologically...
Monitoring Inland Storm Surge and Flooding From Hurricane Gustav in Louisiana, September 2008
Benton D. McGee, Burl B. Goree, Roland W. Tollett, Mason Jr.
2008, Open-File Report 2008-1373
On August 29-31, 2008, the U.S. Geological Survey (USGS) deployed a mobile monitoring network consisting of 124 pressure transducers (sensors) (figs. 1, 2) at 80 sites over an area of about 4,200 square miles to record the timing, extent, and magnitude of inland hurricane storm surge and coastal flooding generated...
Alkylphenols, other endocrine-active chemicals, and fish responses in three streams in Minnesota — Study design and data, February-September 2007
Kathy Lee, Heiko L. Schoenfuss, Nathan D. Jahns, Greg K. Brown, Larry B. Barber
2008, Data Series 405
This report presents the study design and environmental data for an integrated chemical and biological study of three streams (South Fork Crow River, Redwood River, and Grindstone River) that receive wastewater in Minnesota. The objective of the study was to identify distribution patterns of endocrine-active chemicals and other organic chemicals...
Preliminary geologic map of the southern Funeral Mountains and adjacent ground-water discharge sites, Inyo County, California, and Nye County, Nevada
Christopher J. Fridrich, Ren A. Thompson, Janet L. Slate, M. E. Berry, Michael N. Machette
2008, Open-File Report 2008-1366
This map covers the southern part of the Funeral Mountains, and adjacent parts of four structural basins - Furnace Creek, Amargosa Valley, Opera House, and central Death Valley. It extends over three full 7.5-minute quadrangles, and parts of eleven others - a total area of about 950 square kilometers. The...
User Guide and Documentation for Five MODFLOW Ground-Water Modeling Utility Programs
Edward R. Banta, Suzanne S. Paschke, David W. Litke
2008, Techniques and Methods 6-A28
This report documents five utility programs designed for use in conjunction with ground-water flow models developed with the U.S. Geological Survey's MODFLOW ground-water modeling program. One program extracts calculated flow values from one model for use as input to another model. The other four programs extract model input or output...
Recharge to Shale Bedrock at Averill Park, an Upland Hamlet in Eastern New York - An Estimate Based on Pumpage within a Defined Cone of Depression
Allan D. Randall, Anne Finch
2008, Scientific Investigations Report 2008-5087
Water levels beneath parts of Averill Park, a residential hamlet in an upland area of till-mantled shale bedrock in east-central New York, have declined in response to increased withdrawals from new wells. Similar experiences in many upland localities in the northeastern United States have resulted in awareness that the rate...
Gulf Sturgeon Facts
Kenneth J. Sulak, Michael T. Randall
2008, General Information Product 71
Sturgeon: An ancient type of fish, with 5 rows of armor scutes, a cartilaginous skeleton, long snout, suction mouth, no teeth, and 4 barbels. Photograph of a Gulf sturgeon. The total length of a 5-month old is 313 mm....
Natural and Human Influences on Water Quality in a Shallow Regional Unconsolidated Aquifer, Northern Atlantic Coastal Plain
Scott W. Ator
2008, Scientific Investigations Report 2008-5190
Data collected from more than 400 wells in the surficial unconfined aquifer in the Northern Atlantic Coastal Plain (New York through North Carolina) were compiled and analyzed to improve understanding of multiple natural and human influences on water quality in such shallow regional aquifers. Geochemical patterns were identified and described...
Maps showing geology, structure, and geophysics of the central Black Hills, South Dakota
Jack A. Redden, Ed DeWitt
2008, Scientific Investigations Map 2777
This 1:100,000-scale digital geologic map details the complex Early Proterozoic granitic rocks, Early Proterozoic supracrustal metamorphic rocks, and Archean crystalline basement of the Black Hills. The granitic rocks host pegmatite deposits renowned for their feldspar, mica, spodumene, and beryl. The supracrustal rocks host the Homestake gold mine, which produced more...
Summary and Analysis of the U.S. Government Bat Banding Program
Laura E. Ellison
2008, Open-File Report 2008-1363
This report summarizes the U.S. Government Bat Banding Program (BBP) from 1932 to 1972. More than 2 million bands were issued during the program, of which approximately 1.5 million bands were applied to 36 bat species by scientists in many locations in North America including the U.S., Canada, Mexico, and...
Carbon sequestration to mitigate climate change
Eric Sundquist, Robert Burruss, Stephen Faulkner, Robert Gleason, Jennifer Harden, Yousif Kharaka, Larry Tieszen, Mark Waldrop
2008, Fact Sheet 2008-3097
Human activities, especially the burning of fossil fuels such as coal, oil, and gas, have caused a substantial increase in the concentration of carbon dioxide (CO2) in the atmosphere. This increase in atmospheric CO2 - from about 280 to more than 380 parts per million (ppm) over the last 250...
Historic trail map of the La Junta 1 degree x 2 degree quadrangle, southeastern Colorado and western Kansas
Glenn R. Scott, Richard H. Louden, F. Craig Brunstein, Carol A. Quesenberry
2008, Scientific Investigations Map 2923
This historic trail map of the La Junta quadrangle contains all or part of eight Colorado and Kansas counties. Many of the historic trails in the La Junta quadrangle were used by Indians long before the white man reached the area. The earliest recorded use of the trails by white...
Relations of Water Quality to Agricultural Chemical Use and Environmental Setting at Various Scales - Results from Selected Studies of the National Water-Quality Assessment Program
Water Resources Division, U.S. Geological Survey
2008, Fact Sheet 2007-3088
In 1991, the U.S. Geological Survey (USGS) began studies of 51 major river basins and aquifers across the United States as part of the National Water-Quality Assessment (NAWQA) Program to provide scientifically sound information for managing the Nation's water resources. The major goals of the NAWQA Program are to assess...
Simulation of ground-water flow in the Shenandoah Valley, Virginia and West Virginia, using variable-direction anisotropy in hydraulic conductivity to represent bedrock structure
Richard M. Yager, Scott C. Southworth, Clifford I. Voss
2008, Scientific Investigations Report 2008-5002
Ground-water flow was simulated using variable-direction anisotropy in hydraulic conductivity to represent the folded, fractured sedimentary rocks that underlie the Shenandoah Valley in Virginia and West Virginia. The anisotropy is a consequence of the orientations of fractures that provide preferential flow paths through the rock, such that the direction of...
Design and Operation of a Borehole Straddle Packer for Ground-Water Sampling and Hydraulic Testing of Discrete Intervals at U.S. Air Force Plant 6, Marietta, Georgia
Owen G. Holloway, Jonathan P. Waddell
2008, Open-File Report 2008-1349
A borehole straddle packer was developed and tested by the U.S. Geological Survey to characterize the vertical distribution of contaminants, head, and hydraulic properties in open-borehole wells as part of an ongoing investigation of ground-water contamination at U.S. Air Force Plant 6 (AFP6) in Marietta, Georgia. To better understand contaminant...
Geologic model for oil and gas assessment of the Kemik-Thomson Play, central North Slope, Alaska
Christopher J. Schenk, David W. Houseknecht
2008, Scientific Investigations Report 2008-5146
A geologic model was developed to assess undiscovered oil and gas resources in the Kemik-Thomson Play of the Central North Slope, Alaska. In this model, regional erosion during the Early Cretaceous produced an incised valley system on the flanks and crest of the Mikkelsen High and formed the Lower Cretaceous...
Water-quality effects and characterization of indicators of onsite wastewater disposal systems in the east-central Black Hills area, South Dakota, 2006-08
Larry D. Putnam, Galen K. Hoogestraat, J. Foster Sawyer
2008, Scientific Investigations Report 2008-5232
Onsite wastewater disposal systems (OWDS) are used extensively in the Black Hills of South Dakota where many of the watersheds and aquifers are characterized by fractured or solution-enhanced bedrock with thin soil cover. A study was conducted during 2006-08 to characterize water-quality effects and indicators of OWDS. Water samples were...
Mercury in precipitation in Indiana, January 2004–December 2005
Martin R. Risch, Kathleen K. Fowler
2008, Scientific Investigations Report 2008-5148
Mercury in precipitation was monitored during 2004–2005 at five locations in Indiana as part of the National Atmospheric Deposition Program–Mercury Deposition Network (NADP–MDN). Monitoring stations were operated at Roush Lake near Huntington, Clifty Falls State Park near Madison, Fort Harrison State Park near Indianapolis, Monroe County Regional Airport near Bloomington,...
