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...
Hydrogeologic framework of the shallow ground-water system in the Cox Hall Creek basin, Cape May County, New Jersey
Pierre J. Lacombe, Otto S. Zapecza
2006, Open-File Report 2006-1044
Cape May County is investigating the feasibility of restoring the lowermost reach of Cox Hall Creek to its former state as a tidal saltwater wetland; however, the potential for contamination of the shallow ground-water system, which provides water to hundreds of nearby privately owned domestic wells, with saltwater from the...
Effects of Surface-Water Diversion and Ground-Water Withdrawal on Streamflow and Habitat, Punaluu Stream, Oahu, Hawaii
Delwyn S. Oki, Reuben H. Wolff, John M. Perreault
2006, Scientific Investigations Report 2006-5153
The surface- and ground-water resources of the Punaluu area of northeast Oahu, Hawaii, have been and continue to be important for cultural, domestic, agricultural, recreational, and aesthetic purposes. Punaluu Stream flows perennially because rain falls frequently in the area and ground water discharges to the stream. Flow in Punaluu Stream...
Preliminary integrated geologic map databases for the United States: Digital data for the reconnaissance geologic map of the western Aleutian Islands, Alaska
Water Resources Division, U.S. Geological Survey
2006, Open-File Report 2006-1302
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 generalized bedrock geologic map, Yukon Flats region, east-central Alaska
Alison B. Till, Julie A. Dumoulin, Jeffrey D. Phillips, Richard G. Stanley, Jessie Crews
2006, Open-File Report 2006-1304
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,...
Evaluation of baseline ground-water conditions in the Mosteiros, Ribeira Paul, and Ribeira Fajã Basins, Republic of Cape Verde, West Africa, 2005-06
Victor M. Heilweil, John D. Earle, Jay R. Cederberg, Mickey M. Messer, Brent E. Jorgensen, Ingrid M. Verstraeten, Miguel A. Moura, Arrigo Querido, Spencer, Tatiana Osorio
2006, Scientific Investigations Report 2006-5207
This report documents current (2005-06) baseline ground-water conditions in three basins within the West African Republic of Cape Verde (Mosteiros on Fogo, Ribeira Paul on Santo Antão, and Ribeira Fajã on São Nicolau) based on existing data and additional data collected during this study. Ground-water conditions (indicators) include ground-water levels,...
An update of the distribution of selected radiochemical and chemical constituents in perched ground water, Idaho National Laboratory, Idaho, Emphasis 1999-2001
Linda C. Davis
2006, Scientific Investigations Report 2006-5236
Radiochemical and chemical wastes generated at facilities at the Idaho National Laboratory (INL) were discharged since 1952 to infiltration ponds at the Reactor Technology Complex (RTC) (known as the Test Reactor Area [TRA] until 2005), and the Idaho Nuclear Technology and Engineering Center (INTEC) and buried at the Radioactive Waste...
Simulation of daily pesticide concentrations from watershed characteristics and monthly climatic data
Aldo V. Vecchia, Charles G. Crawford
2006, Scientific Investigations Report 2006-5181
A time-series model was developed to simulate daily pesticide concentrations for streams in the coterminous United States. The model was based on readily available information on pesticide use, climatic variability, and watershed charac-teristics and was used to simulate concentrations for four herbicides [atrazine, ethyldipropylthiocarbamate (EPTC), metolachlor, and trifluralin] and three...
Audiomagnetotelluric data from Spring, Cave, and Coyote Spring Valleys, Nevada
Darcy McPhee, Bruce A. Chuchel, Louise Pellerin
2006, Open-File Report 2006-1164
Audiomagnetotelluric (AMT) data along four profiles in Spring, Cave, and Coyote Spring Valleys are presented here. The AMT method is used to estimate the electrical resistivity of the earth over depth ranges of a few meters to greater than one kilometer. This method is a valuable tool for revealing subsurface...
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...
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...
Water resources data, Florida, water year 2005Volume 2B: South Florida ground water
S. Prinos, R. Irvin, M. Byrne
2006, Water Data Report FL-05-2B
Water resources data for 2005 water year in Florida consists of continuous or daily discharge for 429 streams, periodic discharge for 9 streams, continuous or daily stage for 218 streams, periodic stage for 5 stream, peak discharge for 28 streams, and peak stage for 28 streams, continuous or daily elevations...
Instream flow characterization of Upper Salmon River basin streams, central Idaho, 2005
Terry R. Maret, Jon Hortness, Douglas S. Ott
2006, Scientific Investigations Report 2006-5230
Anadromous fish populations in the Columbia River Basin have plummeted in the last 100 years. This severe decline led to Federal listing of Chinook salmon (Oncorhynchus tshawytscha) and steelhead trout (Oncorhynchus mykiss) stocks as endangered or threatened under the Endangered Species Act (ESA) in the 1990s. Historically, the upper Salmon...
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...
Concentrations, and estimated loads and yields of nutrients and suspended sediment in the Little River basin, Kentucky, 2003-04
Angela S. Crain
2006, Scientific Investigations Report 2006-5204
Nutrients, primarily nitrogen and phosphorus compounds, naturally occur but also are applied to land in the form of commercial fertilizers and livestock waste to enhance plant growth. Concentrations, estimated loads and yields, and sources of nitrite plus nitrate, total phosphorus, and orthophosphate were evaluated in streams of the Little River...
Interferograms showing land subsidence and uplift in Las Vegas Valley, Nevada, 1992-99
Michael T. Pavelko, Jorn Hoffmann, Nancy A. Damar
2006, Scientific Investigations Report 2006-5218
The U.S. Geological Survey, in cooperation with the Nevada Department of Conservation and Natural Resources-Division of Water Resources and the Las Vegas Valley Water District, compiled 44 individual interferograms and 1 stacked interferogram comprising 29 satellite synthetic aperture radar acquisitions of Las Vegas Valley, Nevada, from 1992 to 1999. The...
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...
Evaluation of well-purging effects on water-quality results for samples collected from the eastern Snake River Plain aquifer underlying the Idaho National Laboratory, Idaho
LeRoy L. Knobel
2006, Scientific Investigations Report 2006-5232
This report presents qualitative and quantitative comparisons of water-quality data from the Idaho National Laboratory, Idaho, to determine if the change from purging three wellbore volumes to one wellbore volume has a discernible effect on the comparability of the data. Historical water-quality data for 30 wells were visually compared to...
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...
Thematic mapper-derived mineral distribution maps of Idaho, Nevada, and western Montana
Gary L. Raines
2006, Data Series 185
This report provides mineral distribution maps based on TM spectral information of minerals commonly associated with hydrothermal alteration in Nevada, Idaho, and western Montana. The product of the processing is provided as four ESRI GRID files with 30 m resolution by state. UTM Zone 11 projection is used for Nevada...
Numerical Simulation of the Hydrologic Effects of Redistributed and Additional Ground-Water Withdrawal, Island of Molokai, Hawaii
Delwyn S. Oki
2006, Scientific Investigations Report 2006-5177
Because of increased demand for water associated with a growing population, projected increases in demand over the next few decades, and rising salinity of the water pumped from some existing wells, the County of Maui Department of Water Supply (DWS) is currently (2006) considering drilling additional wells to replace or...
Estimate of ground water in storage in the Great Lakes basin, United States, 2006
William F. Coon, Rodney A. Sheets
2006, Scientific Investigations Report 2006-5180
Hydrogeologic data from Regional Aquifer System Analyses (RASA) studies by the U.S. Geological Survey in the Great Lakes Basin, United States, during 1978-95, were compiled and used to estimate the total volume of water that is stored in the many aquifers of the basin. These studies focused on six regional...
Tephra deposits for the past 2600 years from Irazú Volcano, Costa Rica: Chapter 12 in Volcanic hazards in Central America
S.K. Clark, M. K. Reagan, D.A. Trimble
William I. Rose, Gregg J.S. Bluth, Michael J. Carr, John W. Ewert, Lina C. Patino, James W. Vallance, editor(s)
2006, Report, Volcanic hazards in Central America: Geological Society of America Special Paper 412
No abstract available....
Volcanic hazards in Central America
William I. Rose, Gregg J.S. Bluth, Michael J. Carr, John W. Ewert, Lina C. Patino, James W. Vallance, editor(s)
2006, Report, Geological Society of America Special Paper 412
This volume is a sampling of current scientific work about volcanoes in Central America with specific application to hazards. The papers reflect a variety of international and interdisciplinary collaborations and employ new methods. The book will be of interest to a broad cross section of scientists, especially...
User's manual for the Graphical Constituent Loading Analysis System (GCLAS)
G. F. Koltun, Michael Eberle, J. R. Gray, G.D. Glysson
2006, Techniques and Methods 4-C1
This manual describes the Graphical Constituent Loading Analysis System (GCLAS), an interactive cross-platform program for computing the mass (load) and average concentration of a constituent that is transported in stream water over a period of time. GCLAS computes loads as a function of an equal-interval streamflow time series and an...
