Summary of annual mean, maximum, minimum, and L-scale statistics of daily mean streamflow for 712 U.S. Geological Survey streamflow-gaging Stations in Texas Through 2003
William H. Asquith, Joseph Vrabel, Meghan C. Roussel
2007, Data Series 248
Analysts and managers of surface-water resources might have interest in selected statistics of daily mean streamflow for U.S. Geological Survey (USGS) streamflow-gaging stations in Texas. The selected statistics are the annual mean, maximum, minimum, and L-scale of daily meanstreamflow. Annual L-scale of streamflow is a robust measure of the variability...
Descriptive and Grade-Tonnage Models and Database for Iron Oxide Cu-Au Deposits
Dennis P. Cox, Donald A. Singer
2007, Open-File Report 2007-1155
Iron oxide Cu-Au deposits are veins and breccia-hosted bodies of hematite and/or magnetite with disseminated Cu + Au ? Ag ? Pd ? Pt ? Ni ? U ? LREE minerals formed in sedimentary or volcano-sedimentary basins intruded by igneous rocks. Deposits are associated with broad redox boundaries and feature...
A compilation of spatial digital databases for selected U.S. Geological Survey nonfuel mineral resource assessments for parts of Idaho and Montana
Mary H. Carlson, Michael L. Zientek, J. Douglas Causey, Helen Z. Kayser, Gregory T. Spanski, Anna B. Wilson, Bradley S. Van Gosen, Charles M. Trautwein
2007, Open-File Report 2007-1101
This report compiles selected results from 13 U.S. Geological Survey (USGS) mineral resource assessment studies conducted in Idaho and Montana into consistent spatial databases that can be used in a geographic information system. The 183 spatial databases represent areas of mineral potential delineated in these studies and include attributes on...
Summary of percentages of zero daily mean streamflow for 712 U.S. Geological Survey streamflow-gaging stations in Texas through 2003
William H. Asquith, Joseph Vrabel, Meghan C. Roussel
2007, Data Series 247
Analysts and managers of surface-water resources might have interest in the zero-flow potential for U.S.Geological Survey (USGS) streamflow-gaging stations in Texas. The USGS, in cooperation with the Texas Commission on Environmental Quality, initiated a data and reporting process to generate summaries of percentages of zero daily mean streamflow for 712...
Scoping of Flood Hazard Mapping Needs for Hancock County, Maine
Charles W. Schalk, Robert W. Dudley
2007, Open-File Report 2007-1128
Background The Federal Emergency Management Agency (FEMA) developed a plan in 1997 to modernize the FEMA flood mapping program. FEMA flood maps delineate flood hazard areas in support of the National Flood Insurance Program (NFIP). FEMA's plan outlined the steps necessary to update FEMA's flood maps for the nation to a...
The National Assessment of Shoreline Change: A GIS compilation of vector cliff edges and associated cliff erosion data for the California coast
Cheryl Hapke, David Reid, Mark Borrelli
2007, Open-File Report 2007-1112
The U.S. Geological Survey has generated a comprehensive data clearinghouse of digital vector cliff edges and associated rates of cliff retreat along the open-ocean California coast. These data, which are presented herein, were compiled as part of the U.S. Geological Survey's National Assessment of Shoreline Change Project. Cliff erosion is a...
Simulation of the shallow ground-water-flow system near Grindstone Creek and the community of New Post, Sawyer County, Wisconsin
Paul F. Juckem, Randall J. Hunt
2007, Scientific Investigations Report 2007-5014
A two-dimensional, steady-state ground-water-flow model of Grindstone Creek, the New Post community, and the surrounding areas was developed using the analytic element computer code GFLOW. The parameter estimation code UCODE was used to obtain a best fit of the model to measured water levels and streamflows. The calibrated model was...
National assessment of shoreline change, part 4: Historical coastal cliff retreat along the California coast
Cheryl J. Hapke, David Reid
2007, Open-File Report 2007-1133
Coastal cliff retreat, the landward migration of the cliff face, is a chronic problem along many rocky coastlines in the United States. As coastal populations continue to grow and community infrastructures are threatened by erosion, there is increased demand for accurate information regarding trends and rates of coastal cliff retreat....
Scoping of Flood Hazard Mapping Needs for Lincoln County, Maine
Charles W. Schalk, Robert W. Dudley
2007, Open-File Report 2007-1130
Background The Federal Emergency Management Agency (FEMA) developed a plan in 1997 to modernize the FEMA flood mapping program. FEMA flood maps delineate flood hazard areas in support of the National Flood Insurance Program (NFIP). FEMA's plan outlined the steps necessary to update FEMA's flood maps for the nation to a...
Scoping of Flood Hazard Mapping Needs for Androscoggin County, Maine
Charles W. Schalk, Robert W. Dudley
2007, Open-File Report 2007-1131
Background The Federal Emergency Management Agency (FEMA) developed a plan in 1997 to modernize the FEMA flood mapping program. FEMA flood maps delineate flood hazard areas in support of the National Flood Insurance Program (NFIP). FEMA's plan outlined the steps necessary to update FEMA's flood maps for the nation to a...
Scoping of Flood Hazard Mapping Needs for Penobscot County, Maine
Charles W. Schalk, Robert W. Dudley
2007, Open-File Report 2007-1129
Background The Federal Emergency Management Agency (FEMA) developed a plan in 1997 to modernize the FEMA flood mapping program. FEMA flood maps delineate flood hazard areas in support of the National Flood Insurance Program (NFIP). FEMA's plan outlined the steps necessary to update FEMA's flood maps for the nation to a...
Rotational Seismology Workshop of February 2006
John R. Evans, A. Cochard, Vladimir Graizer, Bor-Shouh Huang, Kenneth W. Hudnut, Charles R. Hutt, H. Igel, William H.K. Lee, Chun-Chi Liu, Eugeniusz Majewski, Robert Nigbor, Erdal Safak, William U. Savage, U. Schreiber, Roman Teisseyre, Mihailo Trifunac, J. Wassermann, Chien-Fu Wu
2007, Open-File Report 2007-1145
Introduction A successful workshop titled 'Measuring the Rotation Effects of Strong Ground Motion' was held simultaneously in Menlo Park and Pasadena via video conference on 16 February 2006. The purpose of the Workshop and this Report are to summarize existing data and theory and to explore future challenges for rotational seismology,...
U.S. Geological Survey Streamgaging...from the National Streamflow Information Program
Scott A. Olson, J. Michael Norris
2007, Fact Sheet 2005-3131
This Fact Sheet is one in a series that highlights information or recent research findings from the USGS National Streamflow Information Program (NSIP). The investigations and scientific results reported in this series require a nationally consistent streamgaging network with stable long-term monitoring sites and a rigorous program of data, quality...
Hydrogeology of the Piney Point-Nanjemoy, Aquia, and Upper Patapsco aquifers, Naval Air Station Patuxent River and Webster Outlying Field, St. Marys County, Maryland, 2000–06
Cheryl A. Klohe, Robert T. Kay
2007, Scientific Investigations Report 2006-5266
Recent and projected population growth in southern Maryland continues to bring ground-water-quality and quantity issues to the forefront. Lithologic, borehole geophysical, water-level, and water-use data were compiled and interpreted to revise understanding of the hydrogeologic framework of the Piney Point-Nanjemoy, Aquia, and Upper Patapsco aquifers in southern Maryland, with emphasis...
Topobathymetric data for Tampa Bay, Florida
Dean J. Tyler, David G. Zawada, A. Nayegandi, John Brock, M.P. Crane, Kimberly K. Yates, Kathryn E. L. Smith
2007, Open-File Report 2007-1051
Topobathymetric data (“topobathy”) are a merged rendering of both topography (land elevation) and bathymetry (water depth) to provide a single product useful for inundation mapping and a variety of other applications. These data were developed using one topographic and two bathymetric datasets collected at different dates. Topography was obtained from...
Mercury at the Oat Hill Extension Mine and James Creek, Napa County, California: Tailings, sediment, water, and biota, 2003-2004
Aaron J. Slowey, James J. Rytuba, Roger L. Hothem, Jason T. May
2007, Open-File Report 2007-1132
The Oat Hill Extension (OHE) Mine is one of several mercury mines located in the James Creek/Pope Creek watershed that produced mercury from the 1870's until 1944 (U.S. Bureau of Mines, 1965). The OHE Mine developed veins and mineralized fault zones hosted in sandstone that extended eastward from the Oat...
Reconnaissance study of the hydrology of American Memorial Park, Island of Saipan, Commonwealth of the Northern Mariana Islands
Jeff A. Perreault
2007, Scientific Investigations Report 2007-5042
American Memorial Park, a unit of the National Park Service on the Island of Saipan, includes among its features a 27-acre estuarine system that has become a rarity within the Commonwealth of the Northern Mariana Islands. The estuarine system's mosaic of marshy areas interspersed with emergent wetlands and mixed wet...
Factors Affecting Spatial and Temporal Variability in Nutrient and Pesticide Concentrations in the Surficial Aquifer on the Delmarva Peninsula
Linda M. Debrewer, Scott W. Ator, Judith M. Denver
2007, Scientific Investigations Report 2005-5257
Water quality in the unconfined, unconsolidated surficial aquifer on the Delmarva Peninsula is influenced by the availability of soluble ions from natural and human sources, and by geochemical factors that affect the mobility and fate of these ions within the aquifer. Ground-water samples were collected from 60 wells completed in...
Geochemical data for stream-sediment, surface-water, rock, and vegetation samples from Red Mountain (Dry Creek), an unmined volcanogenic massive sulfide deposit in the Bonnifield District, Alaska Range, east-central Alaska
Stuart A. Giles, Robert G. Eppinger, Matthew Granitto, Philip P. Zelenak, Monique G. Adams, Michael W. Anthony, Paul H. Briggs, Larry P. Gough, Philip L. Hageman, Jane M. Hammarstrom, John D. Horton, Stephan J. Sutley, Peter M. Theodorakos, Ruth E. Wolf
2007, Data Series 204
North-central and northeast Nevada contains numerous large plutons and smaller stocks but also contains many small, shallowly emplaced intrusive bodies, including dikes, sills, and intrusive lava dome complexes. Decades of geologic investigations in the study area demonstrate that many ore deposits, representing diverse ore deposit types, are spatially, and probably...
Mineralogy from Cores in Prospect Gulch, San Juan County, Colorado
Dana J. Bove, Raymond H. Johnson, Douglas B. Yager
2007, Open-File Report 2007-1095
In the late nineteenth century, San Juan County, Colorado, was the center of a metal mining boom in the San Juan Mountains. Although most mining activity ceased by the 1990s, the effects of historical mining continue to contribute metals to ground water and surface water. Previous research by the U.S....
Use of borehole-radar methods to monitor a steam-enhanced remediation pilot study at a quarry at the former Loring Air Force Base, Maine
Colette Gregoire, Peter K. Joesten, John W. Lane Jr.
2007, Scientific Investigations Report 2006-5191
Single-hole radar reflection and crosshole radar tomography surveys were used in conjunction with conventional borehole-geophysical methods to evaluate the effectiveness of borehole-radar methods for monitoring the movement of steam and heat through fractured bedrock. The U.S. Geological Survey, in cooperation with U.S. Environmental Protection Agency (USEPA), conducted surveys in an...
Application of FTLOADDS to Simulate Flow, Salinity, and Surface-Water Stage in the Southern Everglades, Florida
John D. Wang, Eric D. Swain, Melinda A. Wolfert, Christian D. Langevin, Dawn E. James, Pamela A. Telis
2007, Scientific Investigations Report 2007-5010
The Comprehensive Everglades Restoration Plan requires numerical modeling to achieve a sufficient understanding of coastal freshwater flows, nutrient sources, and the evaluation of management alternatives to restore the ecosystem of southern Florida. Numerical models include a regional water-management model to represent restoration changes to the hydrology of southern Florida and...
Data for a regional approach to the development of an effects-based nutrient criterion for wadable streams
J. Kent Crawford, Connie A. Loper, Joseph R. Beaman, Anna G. Soehl, Will S. Brown
2007, Data Series 257
States are required by the U.S. Environmental Protection Agency to establish nutrient criteria (concentrations of nutrients above which water quality is deteriorated) as part of their water-quality regulations. A study of wadable streams in the Mid-Atlantic Region was undertaken by the U.S. Geological Survey, the U.S. Environmental Protection Agency, and...
Database Dictionary for Ethiopian National Ground-Water DAtabase (ENGDA) Data Fields
Eve L. Kuniansky, David W. Litke, Patrick Tucci
2007, Open-File Report 2007-1099
Introduction This document describes the data fields that are used for both field forms and the Ethiopian National Ground-water Database (ENGDA) tables associated with information stored about production wells, springs, test holes, test wells, and water level or water-quality observation wells. Several different words are used in this database dictionary and...
Sulfur dioxide emission rates from Kīlauea Volcano, Hawai‘i, an update: 2002-2006
Tamar Elias, A. J. Sutton
2007, Open-File Report 2007-1114
Introduction Sulfur dioxide (SO2) emission rates from Kilauea Volcano were first measured by Stoiber and Malone (1975) and have been measured on a regular basis since 1979 (Greenland and others, 1985; Casadevall and others, 1987; Elias and others, 1998; Sutton and others, 2001, Elias and Sutton, 2002, Sutton and others,...
