Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10380
Seafloor erosional processes offshore of the Chandeleur Islands, Louisiana Seafloor erosional processes offshore of the Chandeleur Islands, Louisiana
The Chandeleur Islands are a chain of barrier islands that lies along the eastern side of the modern Mississippi River Delta plain. The island chain is located near the seaward edge of the relict St. Bernard Delta, the part of the Mississippi Delta that formed between approximately 4,000 and 2,000 years before present and was later abandoned as sedimentation shifted southward. After...
Authors
David C. Twichell, John Brock
Baseline ecological risk assessment of the Calcasieu Estuary, Louisiana: Part 2. An evaluation of the predictive ability of effects-based sediment-quality guidelines Baseline ecological risk assessment of the Calcasieu Estuary, Louisiana: Part 2. An evaluation of the predictive ability of effects-based sediment-quality guidelines
Three sets of effects-based sediment-quality guidelines (SQGs) were evaluated to support the selection of sediment-quality benchmarks for assessing risks to benthic invertebrates in the Calcasieu Estuary, Louisiana. These SQGs included probable effect concentrations (PECs), effects range median values (ERMs), and logistic regression model (LRMs)-based T50 values. The results of this...
Authors
Donald D. MacDonald, Christopher G. Ingersoll, Dawn Smorong, Jesse A. Sinclair, Rebekka Lindskoog, Ning Wang, Corrine Severn, Ron Gouguet, John Meyer, Jay Field
Bank erosion of navigation canals in the western and central Gulf of Mexico Bank erosion of navigation canals in the western and central Gulf of Mexico
Erosion of navigation canal banks is a direct cause of land loss, but there has been little quantitative analysis to determine why certain major canals exhibit faster widening rates (indicative of erosion) than others in the coastal zones of Texas, Louisiana, Mississippi, and Alabama. We hypothesize that navigation canals exhibit varying rates of erosion based on soil properties of the...
Authors
Cindy A. Thatcher, Stephen B. Hartley, Scott A. Wilson
Drilling a deep geologic test well at Hilton Head Island, South Carolina Drilling a deep geologic test well at Hilton Head Island, South Carolina
The U.S. Geological Survey, in cooperation with the South Carolina Department of Health and Environmental Control (SCDHEC), is drilling a deep geologic test well at Hilton Head Island, S.C. The test well is scheduled to run between mid-March and early May 2011. When completed, the well will be about 1,000 feet deep. The purpose of this test well is to gain knowledge about the regional...
Authors
Arthur P. Schultz, Ellen Seefelt
Lidar postcards Lidar postcards
The U.S. Geological Survey (USGS) Coastal and Marine Geology Program develops and uses specialized technology to build high-resolution topographic and habitat maps. High-resolution maps of topography, bathymetry, and habitat describe important features affected by coastal-management decisions. The mapped information serves as a baseline for evaluating resources and tracking the...
Authors
Heather A. Schreppel, Matthew J. Cimitile
Ocean acidification postcards Ocean acidification postcards
The U.S. Geological Survey (USGS) is conducting research on ocean acidification in polar, temperate, subtropical, and tropical regions including the Arctic, West Florida Shelf, and the Caribbean. Project activities include field assessment, experimental laboratory studies, and evaluation of existing data. The USGS is participating in international and interagency working groups to...
Authors
Heather A. Schreppel, Matthew J. Cimitile
Science supporting Gulf of Mexico oil-spill response, mitigation, and restoration activities-Assessment, monitoring, mapping, and coordination Science supporting Gulf of Mexico oil-spill response, mitigation, and restoration activities-Assessment, monitoring, mapping, and coordination
The St. Petersburg Coastal and Marine Science Center of the U.S. Geological Survey (USGS) investigates physical processes related to coastal and marine environments and societal implications related to natural hazards, resource sustainability, and environmental change. Immediately after the Deepwater Horizon event, the USGS began responding to data requests, directing response personnel...
Authors
Jack Kindinger, Ann B. Tihansky, Matthew Cimitile
Chloride control and monitoring program in the Wichita River Basin, Texas, 1996–2009 Chloride control and monitoring program in the Wichita River Basin, Texas, 1996–2009
Water resources of the Wichita River Basin in north-central Texas are vital to the water users in Wichita Falls, Tex., and surrounding areas. The Wichita River Basin includes three major forks of the Wichita River upstream from Lake Kemp, approximately 50 miles southwest of Wichita Falls, Tex. The main stem of the Wichita River is formed by the confluence of the North Wichita River and...
Authors
M. M. Haynie, G. F. Burke, Stanley Baldys
Rainfall and evapotranspiration data for southwest Medina County, Texas, August 2006-December 2009 Rainfall and evapotranspiration data for southwest Medina County, Texas, August 2006-December 2009
During August 2006-December 2009, the U.S. Geological Survey (USGS), in cooperation with the U.S. Army Corps of Engineers, Fort Worth District, collected rainfall and evapotranspiration data to help characterize the hydrology of the Nueces River Basin, Texas. The USGS installed and operated a station to collect continuous (30-minute interval) rainfall and evapotranspiration data in...
Authors
Richard N. Slattery, William H. Asquith, Darwin J. Ockerman
A digital terrain model of bathymetry and shallow-zone bottom-substrate classification for Spednic Lake and estimates of lake-level-dependent habitat to support smallmouth bass persistence modeling A digital terrain model of bathymetry and shallow-zone bottom-substrate classification for Spednic Lake and estimates of lake-level-dependent habitat to support smallmouth bass persistence modeling
In 2009, the U.S. Geological Survey entered into a cooperative agreement with the International Joint Commission, St. Croix River Board to do an analysis of historical smallmouth bass habitat as a function of lake level for Spednic Lake in an effort to quantify the effects, if any, of historical lake-level management and meteorological conditions (from 1970 to 2009) on smallmouth bass...
Authors
Robert W. Dudley, Charles W. Schalk, Nicholas W. Stasulis, Joan G. Trial
Cumuilative Effects of Impoundments on the Hydrology of Riparian Wetlands along the Marmaton River, west-central Missouri Cumuilative Effects of Impoundments on the Hydrology of Riparian Wetlands along the Marmaton River, west-central Missouri
The effects of proposed impoundments and resulting streamflow regulation on riparian wetlands in the Marmaton River Basin, Missouri, USA were determined using measurements and numerical simulations of wetland water budgets. Calibrated and validated Soil-Plant-Air-Water (SPAW) models were used to simulate daily water depths of four riparian wetlands for Current (model scenario of existing
Authors
David C. Heimann, Heather M. Krempa
Simulated effects of water withdrawals and land-use changes on streamflows and groundwater levels in the Pawcatuck River Basin, southwestern Rhode Island and southeastern Connecticut Simulated effects of water withdrawals and land-use changes on streamflows and groundwater levels in the Pawcatuck River Basin, southwestern Rhode Island and southeastern Connecticut
No abstract available.
Authors
Gardner C. Bent, Phillip J. Zarriello, Gregory E. Granato, John P. Masterson, Donald A. Walter, Andrew M. Waite, Peter E. Church