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U.S. Geological Survey programs in Florida, 1999
Water Resources Division, U.S. Geological Survey
1999, Open-File Report 99-196
The safety, health, and economic well-being of Florida?s citizens are important to the U.S. Geological Survey (USGS), which is involved in water-related, geologic, biological, land use, and mapping issues in many parts of the State. The USGS office in Tallahassee acts as the liaison for all studies conducted by USGS...
Physical stratigraphy, paleontology, and magnetostratigraphy of the USGS-Santee Coastal Reserve core (CHN-803), Charleston County, South Carolina
Lucy E. Edwards, G. S. Gohn, Self-Trail J.M., D.C. Prowell, L.M. Bybell, L. P. Bardot, J. V. Firth, B.T. Huber, N. O. Frederiksen, K.G. MacLeod
1999, Open-File Report 99-308-A
The Santee Coastal Reserve core, a 545-ft-deep corehole in northeastern Charleston County, South Carolina, recovered sediments of Late Cretaceous, Paleocene, Eocene, and Quaternary age. The deepest sediments, the Donoho Creek Formation (545-475.7 ft), consist of 69.3 ft of muddy calcareous sand of marine origin. This formation is placed within the...
Chesapeake Bay habitat criteria scores and the distribution of submersed aquatic vegetation in the tidal Potomac River and Potomac Estuary, 1983-1997
J.M. Landwehr, J. T. Reel, N. B. Rybicki, H. Ruhl, Virginia Carter
1999, Open-File Report 99-219
The Chesapeake Bay Program has identified habitat requirements for the restoration of submersed aquatic vegetation (SAV) in the Chesapeake Bay estuary and tidal reaches of contributing river systems conditioned on the salinity regime of a specific location. The tidal Potomac River and Potomac Estuary is an important component of the...
Physical stratigraphy, paleontology, and magnetostratigraphy of the USGS-Santee Coastal Reserve core (CHN-803), Charleston County, South Carolina
Lucy E. Edwards, G. S. Gohn, Self-Trail J.M., D.C. Prowell, L.M. Bybell, L. P. Bardot, J. V. Firth, B.T. Huber, N. O. Frederiksen, K.G. MacLeod
1999, Open-File Report 99-308-B
The Santee Coastal Reserve core, a 545-ft-deep corehole in northeastern Charleston County, South Carolina, recovered sediments of Late Cretaceous, Paleocene, Eocene, and Quaternary age. The deepest sediments, the Donoho Creek Formation (545-475.7 ft), consist of 69.3 ft of muddy calcareous sand of marine origin. This formation is placed within the...
Susceptibility of ground water to surface and shallow sources of contamination, Orange County, North Carolina
Silvia Terziotti, J. L. Eimers
1999, Open-File Report 99-179
In 1998, the relative susceptibility of ground water in Orange County, North Carolina,to contamination from surface and shallow sources was evaluated. A geographic information system was used to build three county-wide layers--soil permeability, land use/land cover, and land-surface slope. The harmonic mean permeability of soil layers was used to estimate...
Restoration of bighorn sheep metapopulations in and near 15 national parks: Conservation of severely fragmented species; Volume II, Synopsis of research findings
Francis J. Singer, Michelle A. Gudorf
1999, Open-File Report 99-105
In 1991, the National Park Service (NPS) initiated a series of research studies to support an effort to restore bighorn sheep (Ovis canadensis) into 15 national parks in the Intennountain West and Colorado Plateau areas (Fig. 1). The Biological Resources Division of the U.S. Geological Survey provided scientific advice and...
Gravity and magnetic study of the Pahute Mesa and Oasis Valley region, Nye County, Nevada
Edward A. Mankinen, Thomas G. Hildenbrand, Gary L. Dixon, Edwin H. McKee, Christopher J. Fridrich, Randell J. Laczniak
1999, Open-File Report 99-303
Regional gravity and aeromagnetic maps reveal the existence of deep basins underlying much of the southwestern Nevada volcanic field, approximately 150 km northwest of Las Vegas. These maps also indicate the presence of prominent features (geophysical lineaments) within and beneath the basin fill. Detailed gravity surveys were conducted in order...
Gas and Isotope Geochemistry of 81 Steam Samples from Wells in The Geysers Geothermal Field, Sonoma and Lake Counties, California
Jacob B. Lowenstern, Cathy J. Janik, Lynne Fahlquist, Linda S. Johnson
1999, Open-File Report 99-304
The Geysers geothermal field in northern California, with about 2000-MW electrical capacity, is the largest geothermal field in the world. Despite its importance as a resource and as an example of a vapor-dominated reservoir, very few complete geochemical analyses of the steam have been published (Allen and Day, 1927; Truesdell and others, 1987). This report presents...
Subduction zone and crustal dynamics of western Washington; a tectonic model for earthquake hazards evaluation
Dal Stanley, Antonio H. Villasenor, Harley Benz
1999, Open-File Report 99-311
The Cascadia subduction zone is extremely complex in the western Washington region, involving local deformation of the subducting Juan de Fuca plate and complicated block structures in the crust. It has been postulated that the Cascadia subduction zone could be the source for a large thrust earthquake, possibly as large...
Stream channel cross sections for a reach of the Boise River in Ada County, Idaho
Jon Hortness, Douglas C. Werner
1999, Open-File Report 99-211
The Federal Emergency Management Agency produces maps of areas that are likely to be inundated during major floods, usually the 100-year, or 1-percent probability, flood. The maps, called Flood Insurance Rate Maps, are used to determine flood insurance rates for homes, businesses, or other structures located in flood-prone areas. State...
A plan for assessing the occurrence and distribution of methyl tert-butyl ether and other volatile organic compounds in drinking water and ambient ground water in the Northeast and Mid-Atlantic regions of the United States
Stephen J. Grady, George D. Casey
1999, Open-File Report 99-207
A plan to assess the occurrence and distribution of methyl tert-butyl ether (MTBE) and other volatile organic compounds (VOCs) in drinking water and ambient ground water in the Northeast and Mid-Atlantic regions of the United States was designed to meet two primary objectives. This study will provide the U.S. Environmental...
Hydrogeology and analysis of aquifer characteristics in west-central Pinellas County, Florida
J. C. Broska, H.L. Barnette
1999, Open-File Report 99-185
The U.S. Geological Survey, in cooperation with Pinellas County, Florida, conducted an investigation to describe the hydrogeology and analyze the aquifer characteristics in west-central Pinellas County. A production test well and four monitor wells were constructed in Pinellas County at Walsingham Park during 1996-97. Water-quality sampling, static and dynamic borehole...
Estimated hydraulic properties for the surficial- and bedrock-aquifer system, Meddybemps, Maine
Forest P. Lyford, Stephen P. Garabedian, Bruce P. Hansen
1999, Open-File Report 99-199
Analytical and numerical-modeling methods were used to estimate hydraulic properties of the aquifer system underlying the Eastern Surplus Company Superfund Site in Meddybemps, Maine. Estimates of hydraulic properties are needed to evaluate pathways for contaminants in ground water and to support evaluation and selection of remediation measures for contaminated ground...
New reporting procedures based on long-term method detection levels and some considerations for interpretations of water-quality data provided by the U.S. Geological Survey National Water Quality Laboratory
Carolyn J. Oblinger Childress, William T. Foreman, Brooke F. Connor, Thomas J. Maloney
1999, Open-File Report 99-193
This report describes the U.S. Geological Survey National Water Quality Laboratory's approach for determining long-term method detection levels and establishing reporting levels, details relevant new reporting conventions, and provides preliminary guidance on interpreting data reported with the new conventions. At the long-term method detection level concentration, the risk of a...
Ground-water conditions in Georgia, 1998
Alan M. Cressler
1999, Open-File Report 99-204
Ground-water conditions in Georgia during 1998 and for the period of record were evaluated using data from U.S. Geological Survey ground-water-level and ground-water-quality monitoring networks. Data for 1998 included in this report are from continuous water-level records from 130 wells and chloride analyses from 14 wells. Data from one well...
Water quality and discharge data for St. Joseph Bay, Florida, 1997-98
M. P. Berndt, M.A. Franklin
1999, Open-File Report 99-190
Historical data were compiled on water quality and water levels for the St. Joseph Bay area to assess quality of possible sources of land-derived water into the Bay. Ground-water quality data were compiled from Florida Department of Environmental Protection and surface-water quality data were compiled from U.S.Geological Survey files. Water-quality...