Water-quality reconnaissance of Laguna Tortuguero, Vega Baja, Puerto Rico, March 1999-May 2000
Luis Soler-Lopez, Senen Guzman-Rios, Carlos Conde-Costas
2006, Open-File Report 2006-1049
The Laguna Tortuguero, a slightly saline to freshwater lagoon in north-central Puerto Rico, has a surface area of about 220 hectares and a mean depth of about 1.2 meters. As part of a water-quality reconnaissance, water samples were collected at about monthly and near bi-monthly intervals from March 1999 to...
Results of analyses of the fungicide Chlorothalonil, its degradation products, and other selected pesticides at 22 surface-water sites in five Southern states, 2003-04
Elisabeth A. Scribner, James L. Orlando, William A. Battaglin, Mark W. Sandstrom, Kathryn Kuivila, Michael T. Meyer
2006, Open-File Report 2006-1207
In accordance with the mission of the U.S. Geological Survey (USGS) Toxic Substances Hydrology Program, a pesticide study was conducted during 2003–04 to determine the occurrence of the fungicide chlorothalonil and its degradation products at 22 surface-water sites in five Southern States. Water-quality samples were collected during the peanut-growing season...
Benthic habitat and geologic mapping of the outer continental shelf of north-central California
Roberto J. Anima, John L. Chin, James E. Conrad, Nadine E. Golden
2006, Open-File Report 2006-1177
The Fanny Shoal area is located between North Farallon Island and Cordell Bank approximately 40 miles west of San Francisco, California. The area lies within the Gulf of the Farallones National Marine Sanctuary (GFNMS) which is located just a few miles from San Francisco. The waters within the GFNMS are...
Sediment deposition and erosion in south San Francisco Bay, California from 1956 to 2005
Bruce Jaffe, Amy C. Foxgrover
2006, Open-File Report 2006-1287
Sediment deposition and erosion in South San Francisco Bay from 1956 to 2005 was studied by comparing bathymetric surveys made in 1956, 1983, and 2005. From 1956 to 1983, the region was erosional. In contrast, from 1983 to 2005, the region was depositional. Analysis of subregions defined by depth, morphology...
Hydrology, description of computer models, and evaluation of selected water-management alternatives in the San Bernardino area, California
Wesley R. Danskin, Kelly R. McPherson, Linda R. Woolfenden
2006, Open-File Report 2005-1278
The San Bernardino area of southern California has complex water-management issues. As an aid to local water managers, this report provides an integrated analysis of the surface-water and ground-water systems, documents ground-water flow and constrained optimization models, and provides seven examples using the models to better understand and manage water...
Land Area Changes in Coastal Louisiana After the 2005 Hurricanes: A Series of Three Maps
John A. Barras
2006, Open-File Report 2006-1274
This report includes three posters with analyses of net land area changes in coastal Louisiana after the 2005 hurricanes (Katrina and Rita). The first poster presents a basic analysis of net changes from 2004 to 2005; the second presents net changes within marsh communities from 2004 to 2005; and the...
Invasive species and climate change
Beth A. Middleton
2006, Open-File Report 2006-1153
Invasive species challenge managers in their work of conserving and managing natural areas and are one of the most serious problems these managers face. Because invasive species are likely to spread in response to changes in climate, managers may need to change their approaches to invasive species management accordingly....
Preliminary integrated geologic map databases for the United States: Digital data for the reconnaissance geologic map of the lower Yukon River region, Alaska
Water Resources Division, U.S. Geological Survey
2006, Open-File Report 2006-1292
The growth in the use of Geographic Information Systems (GIS) has highlighted the need for digital geologic maps that have been attributed with information about age and lithology. Such maps can be conveniently used to generate derivative maps for manifold special purposes such as mineral-resource assessment, metallogenic studies, tectonic studies,...
Preliminary integrated geologic map databases for the United States: Digital data for the geology of southeast Alaska
George E. Gehrels, Henry C. Berg
2006, Open-File Report 2006-1290
The growth in the use of Geographic Information Systems (GIS) has highlighted the need for digital geologic maps that have been attributed with information about age and lithology. Such maps can be conveniently used to generate derivative maps for manifold special purposes such as mineral-resource assessment, metallogenic studies, tectonic studies,...
Preliminary integrated geologic map databases for the United States: Digital data for the reconnaissance bedrock geologic map for the northern Alaska peninsula area, southwest Alaska
Water Resources Division, U.S. Geological Survey
2006, Open-File Report 2006-1303
he growth in the use of Geographic Information Systems (GIS) has highlighted the need for digital geologic maps that have been attributed with information about age and lithology. Such maps can be conveniently used to generate derivative maps for manifold special purposes such as mineral-resource assessment, metallogenic studies, tectonic studies,...
Creation of GIS compatible, historic detailed soil data sets for the Collier and Miami-Dade Counties, Florida
John W. Jones
2006, Open-File Report 2006-1315
When soils data are in digital format compatible with geographic information systems (GIS), a wide variety of analyses and display capabilities are afforded. Detailed information on soils that may be important to Everglades ecosystem restoration has been created in hardcopy form using traditional soils mapping techniques. However, accurate conversion of...
Surface water quality-assurance plan, U.S. Geological Survey, Kentucky Water Science Center, water year 2006
Michael S. Griffin
2006, Open-File Report 2006-1273
This Surface Water Quality-Assurance Plan documents the standards, policies, and procedures used by the Kentucky Water Science Center for activities related to the collection, processing, storage, analysis, and publication of surface-water data....
Quality-assurance plan for the analysis of suspended sediment by the U.S. Geological Survey in Montana
Kent A. Dodge, John H. Lambing
2006, Open-File Report 2006-1242
A quality-assurance plan has been developed for use by the sediment laboratory of the U.S. Geological Survey Montana Water Science Center in conducting activities related to the analysis of suspended sediment. The plan documents quality-assurance policies for sediment-laboratory certification, personnel responsibilities and training, documentation requirements, and laboratory safety. The plan...
Metallogeny of the Great Basin: Crustal evolution, fluid flow, and ore deposits
Albert H. Hofstra, Alan R. Wallace
2006, Open-File Report 2006-1280
The Great Basin physiographic province in the Western United States contains a diverse assortment of world-class ore deposits. It currently (2006) is the world’s second leading producer of gold, contains large silver and base metal (Cu, Zn, Pb, Mo, W) deposits, a variety of other important metallic (Fe, Ni,...
Aeromagnetic and gravity data over the Central Transantarctic Mountains (CTAM), Antarctica: a website for the distribution of data and maps
E. D. Anderson, C. A. Finn, D. Damaske, J.D. Abraham, F. Goldmann, J. W. Goodge, P. Braddock
2006, Open-File Report 2006-1255
Near complete coverage of the East Antarctic Shield by ice hampers geological study of crustal architecture important for understanding global tectonic and climate history. Limited exposures in the central Transantarctic Mountains (CTAM), however, show that Archean and Proterozoic rocks of the shield as well as Neoproterozoic-lower Paleozoic sedimentary successions were...
National Assessment of Shoreline Change Part 3: Historical Shoreline Change and Associated Coastal Land Loss Along Sandy Shorelines of the California Coast
Cheryl J. Hapke, David Reid, Bruce M. Richmond, Peter Ruggiero, Jeff List
2006, Open-File Report 2006-1219
Beach erosion is a chronic problem along many open-ocean shores of the United States. As coastal populations continue to grow and community infrastructures are threatened by erosion, there is increased demand for accurate information regarding past and present trends and rates of shoreline movement. There is also a need for...
Salt marsh dieback in coastal Louisiana: Survey of plant and soil conditions in Barataria and Terrebonne basins, June 2000-September 2001
Karen L. McKee, Irving A. Mendelssohn, Michael D. Materne
2006, Open-File Report 2006-1167
Sudden and extensive dieback of the perennial marsh grass, Spartina alterniflora Loisel (smooth cordgrass), which dominates regularly flooded salt marshes along the Gulf of Mexico and Atlantic coastlines, occurred in the coastal zone of Louisiana. The objectives of this study were to assess soil and plant conditions in dieback areas...
Deep resistivity structure of Yucca Flat, Nevada Test Site, Nevada
Theodore H. Asch, Brian D. Rodriguez, Jay A. Sampson, Erin L. Wallin, Jackie M. Williams
2006, Open-File Report 2006-1261
The Department of Energy (DOE) and the National Nuclear Security Administration (NNSA) at their Nevada Site Office are addressing groundwater contamination resulting from historical underground nuclear testing through the Environmental Management program and, in particular, the Underground Test Area project. One issue of concern is the nature of the somewhat...
Water and sediment quality of the Yukon River and its tributaries, from Eagle to St. Marys, Alaska, 2002-2003
Mark M. Dornblaser, Douglas R. Halm
2006, Open-File Report 2006-1228
The Yukon River basin is a vast and diverse ecosystem covering more than 330,000 square miles, an area larger than Texas. Approximately 126,000 people live within the basin and depend on the Yukon River and its tributaries for drinking water, commerce, and recreational and subsistence fish and game resources. Much of...
Report of the USGS Coastal and Marine Geology Modeling Workshop, Pacific Marine Science Center, Santa Cruz, CA, March 22-23, 2005
Christopher R. Sherwood
2006, Open-File Report 2005-1193
A U.S. Geological Survey (USGS) Coastal and Marine Geology (CMG) Modeling Workshop was held to discuss the general topic of coastal modeling, defined broadly to include circulation, waves, sediment transport, water quality, ecology, sediment diagenesis, morphology change, and coastal evolution, on scales ranging from seconds and a few centimeters (individual...
Photographs, correspondence, and presentations related to the La Conchita, California, landslide
Randall W. Jibson
2006, Open-File Report 2006-1278
This report contains the following photographs and information related to the La Conchita, California, landslide: 1) Digital photographs taken by the author during a visit to the La Conchita landslide on January 14, 2005. 2) Correspondence related to the approval and release of USGS Open-File Report 2005-1067, Landslide Hazards at...
A Spatial Overlay Ranking Method for a Geospatial Search of Text Objects
Kenneth J. Lanfear
2006, Open-File Report 2006-1279
Earth-science researchers need the capability to find relevant information by location and topic. Conventional geographic techniques that simply check whether polygons intersect can efficiently achieve a high recall on location, but can not achieve precision for ranking results in likely order of importance to the reader. A spatial overlay ranking...
Physical properties of two core samples from Well 34-9RD2 at the Coso geothermal field, California
C.A. Morrow, D.A. Lockner
2006, Open-File Report 2006-1230
The Coso geothermal field, located along the Eastern California Shear Zone, is composed of fractured granitic rocks above a shallow heat source. Temperatures exceed 640 ?F (~338 ?C) at a depth of less than 10000 feet (3 km). Permeability varies throughout the geothermal field due to the competing processes of...
Hawaiian Volcano Observatory seismic data, January to December 2005
Jennifer S. Nakata
2006, Open-File Report 2006-1231
The Hawaiian Volcano Observatory (HVO) summary presents seismic data gathered during the year. The seismic summary is offered without interpretation as a source of preliminary data. It is complete in the sense that most data for events of M-1.5 routinely gathered by the Observatory are included. The HVO summaries have been...
Assessment of undiscovered technically recoverable conventional petroleum resources of northern Afghanistan
T. R. Klett, G. F. Ulmishek, C. J. Wandrey, Warren F. Agena, Douglas Steinshouer
2006, Open-File Report 2006-1253
Using a geology-based assessment methodology, the U.S. Geological Survey - Afghanistan Ministry of Mines and Industry Joint Oil and Gas Resource Assessment Team estimated mean volumes of undiscovered petroleum in northern Afghanistan; the resulting estimates are 1.6 billion barrels (0.2 billion metric tons) of crude oil, 16 trillion cubic feet...
