Methods to achieve accurate projection of regional and global raster databases
E. Lynn Usery, Jeong Chang Seong, Dan Steinwand
2002, Open-File Report 2001-181
Modeling regional and global activities of climatic and human-induced change requires accurate geographic data from which we can develop mathematical and statistical tabulations of attributes and properties of the environment. Many of these models depend on data formatted as raster cells or matrices of pixel values. Recently, it has been...
Geochemistry of surface and pore water at USGS coring sites in wetlands of South Florida, 1994 and 1995
William H. Orem, Harry E. Lerch, Peter Rawlik
2002, Open-File Report 97-454
In this report, we present preliminary data on surface and pore water geochemistry from 22 sites in south Florida sampled during 1994 and 1995. These results are part of a larger study designed to evaluate the role of biogeochemical processes in sediments in the cycling of carbon, nitrogen, phosphorus, and...
Measuring streamflow in Virginia (2002 revision)
Roger M. Moberg, Karen C. Rice, Eugene D. Powell
2002, Open-File Report 95-713
The U.S. Geological Survey (USGS), U.S. Department of the Interior, is the Nation's largest Earth-science information agency. Among its many responsibilities, such as map making and providing information on earthquakes and other natural hazards, the USGS provides information on the Nation's water resources. The USGS has collected and analyzed hydrologic...
Potentiometric surface of the upper Patapsco aquifer in southern Maryland, September 2000
Stephen E. Curtin, David C. Andreasen, Judith C. Wheeler
2002, Open-File Report 2002-246
No abstract available....
Potentiometric surface of the lower Patapsco aquifer in southern Maryland, September 2000
Stephen E. Curtin, David C. Andreasen, Judith C. Wheeler
2002, Open-File Report 2002-247
No abstract available....
Fifty-year flood-inundation maps for Tocoa, Honduras
David L. Kresch, Mark C. Mastin, T. D. Olsen
2002, Open-File Report 2002-262
After the devastating floods caused by Hurricane Mitch in 1998, maps of the areas and depths of the 50-year-flood inundation at 15 municipalities in Honduras were prepared as a tool for agencies involved in reconstruction and planning. This report, which is one in a series of 15, presents maps of...
Geology, Geochemistry and Geophysics of Sedimentary Rock-Hosted Au Deposits in P.R. China
Stephen G. Peters
2002, Open-File Report 2002-131
This is the second report concerning results of a joint project between the U.S. Geological Survey and the Tianjin Geological Academy to study sedimentary rock-hosted Au deposits in P.R. China. Since the 1980s, Chinese geologists have devoted a large-scale exploration and research effort to the deposits. As a result, there...
Petroleum systems of the Malay Basin Province, Malaysia
Michele G. Bishop
2002, Open-File Report 99-50-T
The offshore Malay Basin province is a Tertiary oil and gas province composed of a complex of half grabens that were filled by lacustrine shales and continental clastics.These deposits were overlain by clastics of a large delta system that covered the basin.Delta progradation was interupted by transgressions of the South...
Visualization of drifting buoy deployments on upper Detroit River within the Great Lakes Waterway from August 28-30, 2001
David J. Holtschlag, Steve A. Aichele
2002, Open-File Report 2002-1
Detroit River is a connecting channel on the Great Lakes waterway that joins Lake St. Clair with Lake Erie. The river forms part of the international boundary between the United States and Canada in southeastern Michigan and southern Ontario. Drifting buoys were deployed on Detroit River to help investigate flow...
Lithogeochemical character of near-surface bedrock in the New England coastal basins
Gilpin R. Robinson Jr., Joseph D. Ayotte, Denise L. Montgomery, Leslie A. DeSimone
2002, Open-File Report 2002-7
This geographic information system (GIS) data layer shows the generalized lithologic and geochemical, termed lithogeochemical, character of near-surface bedrock in the New England Coastal Basin (NECB) study area of the U.S. Geological Survey's National Water Quality Assessment (NAWQA) Program. The area encompasses 23,000 square miles in western and central...
Beowulf Distributed Processing and the United States Geological Survey
Brian G. Maddox
2002, Open-File Report 2002-15
Introduction In recent years, the United States Geological Survey's (USGS) National Mapping Discipline (NMD) has expanded its scientific and research activities. Work is being conducted in areas such as emergency response research, scientific visualization, urban prediction, and other simulation activities. Custom-produced digital data have become essential for these types of activities....
Streamflow gain/loss in the Republican River Basin, Nebraska, October 1998
Michalea R. Johnson, Jennifer S. Stanton, James F. Cornwall, Matthew K. Landon
2002, Open-File Report 2002-88
This arc and point data set contains streamflow-measurement sites and reaches indicating streamflow gain or loss under base-flow conditions along the Republican River and tributaries in Nebraska during October 25 to 28, 1998 (Boohar, 2000). The streamflow measurements were made to obtain data on ground-water/surface-water interaction. Flow was observed visually...
User's guide to Model Viewer, a program for three-dimensional visualization of ground-water model results
Paul A. Hsieh, Richard B. Winston
2002, Open-File Report 2002-106
Model Viewer is a computer program that displays the results of three-dimensional groundwater models. Scalar data (such as hydraulic head or solute concentration) may be displayed as a solid or a set of isosurfaces, using a red-to-blue color spectrum to represent a range of scalar values. Vector data (such as...
Visualization of Flow Alternatives, Lower Missouri River
Robert B. Jacobson, Jeanne Heuser
2002, Open-File Report 2002-122
Background The U.S. Army Corps of Engineers (COE) 'Missouri River Master Water Control Manual' (Master Manual) review has resulted in consideration of many flow alternatives for managing the water in the river (COE, 2001; 1998a). The purpose of this report is to present flow-management alternative model results in a way that...
Summary of suspended-sediment concentration data, San Francisco Bay, California, water year 2000
Paul A. Buchanan, Neil K. Ganju
2002, Open-File Report 2002-146
Suspended-sediment concentration data were collected in San Francisco Bay during water year 2000 (October 1, 1999?September 30, 2000). Optical backscatterance sensors and water samples were used to monitor suspended sediment at one site in Suisun Bay, three sites in San Pablo Bay, two sites in Central San Francisco Bay, and...
Water quality monitoring of Sweetwater and Loveland reservoirs--Phase one results 1998-1999
Michael S. Majewski, Jagdeep S. Sidhu, Gregory O. Mendez
2002, Open-File Report 2002-186
In 1998, the U.S. Geological Survey began a study to assess the overall health of the watershed feeding the Sweetwater Reservoir in southern San Diego County, California. The study focussed on monitoring for organic chemical contamination and the effects of construction and operation of State Route 125 on water quality....
Documentation of spreadsheets for the analysis of aquifer-test and slug-test data
Keith J. Halford, Eve L. Kuniansky
2002, Open-File Report 2002-197
Several spreadsheets have been developed for the analysis of aquifer-test and slug-test data. Each spreadsheet incorporates analytical solution(s) of the partial differential equation for ground-water flow to a well for a specific type of condition or aquifer. The derivations of the analytical solutions were previously published. Thus, this report abbreviates...
Supporting data for hydrologic studies in San Francisco Bay, California: Meteorological measurements at the Port of Redwood City during 1998-2001
Laurence E. Schemel
2002, Open-File Report 2002-231
Meteorological data were collected during 1998-2001 at the Port of Redwood City, California, to support hydrologic studies in South San Francisco Bay. The measured meteorological variables were air temperature, atmospheric pressure, quantum flux (insolation), and four parameters of wind speed and direction: scalar mean horizontal wind speed, (vector) resultant horizontal...
Preliminary code, input, and output for the Deep Percolation and Irrigation Requirement Model (DPIRM) for simulating rates of ground-water recharge and pumpage for irrigation in part of the Republican River Basin, Nebraska, Kansas, and Colorado
Matthew K. Landon, J.F. Cornwall
2002, Open-File Report 2002-242
Fifty-year flood-inundation maps for Choloma, Honduras
Mark C. Mastin, T. D. Olsen
2002, Open-File Report 2002-249
After the devastating floods caused by Hurricane Mitch in 1998, maps of the areas and depths of the 50-year-flood inundation at 15 municipalities in Honduras were prepared as a tool for agencies involved in reconstruction and planning. This report, which is one in a series of 15, presents maps of...
Fifty-year flood-inundation maps for Comayagua, Hondura
David L. Kresch, Mark C. Mastin, T. D. Olsen
2002, Open-File Report 2002-251
After the devastating floods caused by Hurricane Mitch in 1998, maps of the areas and depths of the 50-year-flood inundation at 15 municipalities in Honduras were prepared as a tool for agencies involved in reconstruction and planning. This report, which is one in a series of 15, presents maps of...
Fifty-year flood-inundation maps for El Progreso, Honduras
David L. Kresch, Mark C. Mastin, T. D. Olsen
2002, Open-File Report 2002-252
After the devastating floods caused by Hurricane Mitch in 1998, maps of the areas and depths of the 50-year-flood inundation at 15 municipalities in Honduras were prepared as a tool for agencies involved in reconstruction and planning. This report, which is one in a series of 15, presents maps of...
Fifty-year flood-inundation maps for La Ceiba, Honduras
David L. Kresch, M. C. Mastin, T. D. Olsen
2002, Open-File Report 2002-254
After the devastating floods caused by Hurricane Mitch in 1998, maps of the areas and depths of the 50-year-flood inundation at 15 municipalities in Honduras were prepared as a tool for agencies involved in reconstruction and planning. This report, which is one in a series of 15, presents maps of...
Fifty-year flood-inundation maps for Olanchito, Honduras
David L. Kresch, M. C. Mastin, T. D. Olsen
2002, Open-File Report 2002-257
After the devastating floods caused by Hurricane Mitch in 1998, maps of the areas and depths of the 50-year-flood inundation at 15 municipalities in Honduras were prepared as a tool for agencies involved in reconstruction and planning. This report, which is one in a series of 15, presents maps of...
Fifty-Year Flood-Inundation Maps for Santa Rosa de Aguan, Honduras
Mark C. Mastin, T. D. Olsen
2002, Open-File Report 2002-258
After the devastating floods caused by Hurricane Mitch in 1998, maps of the areas and depths of the 50-year-flood inundation at 15 municipalities in Honduras were prepared as a tool for agencies involved in reconstruction and planning. This report, which is one in a series of 15, presents maps of...
