Investigation of wind and water level for the Giacomini Wetland Restoration Project, Point Reyes National Seashore
John R. Dingler, Roberto J. Anima
2007, Open-File Report 2007-1151
Point Reyes National Seashore (PRNS), comprising unique elements of geological, biological, and historical interest, is located on the central California coast approximately 60 km northwest of San Francisco. The National Seashore contains nearly 130 km of exposed and protected shorelines, spectacular coastal cliffs and headlands, lagoons, open grasslands, bushy hillsides,...
Ground-Water Quality in the St. Lawrence River Basin, New York, 2005-06
Elizabeth A. Nystrom
2007, Open-File Report 2007-1066
The Federal Clean Water Act requires that States monitor and report on the quality of ground water and surface water. To satisfy part of these requirements, the U.S. Geological Survey and New York State Department of Environmental Conservation have developed a program in which ground-water quality is assessed in 2...
LiDAR-Derived Flood-Inundation Maps for Real-Time Flood-Mapping Applications, Tar River Basin, North Carolina
Jerad D. Bales, Chad R. Wagner, Kirsten C. Tighe, Silvia Terziotti
2007, Scientific Investigations Report 2007-5032
Flood-inundation maps were created for selected streamgage sites in the North Carolina Tar River basin. Light detection and ranging (LiDAR) data with a vertical accuracy of about 20 centimeters, provided by the Floodplain Mapping Information System of the North Carolina Floodplain Mapping Program, were processed to produce topographic data for...
Simulation of Hydrologic-System Responses to Ground-Water Withdrawals in the Hunt-Annaquatucket-Pettaquamscutt Stream-Aquifer System, Rhode Island
Paul M. Barlow, Lance J. Ostiguy
2007, Open-File Report 2006-1226
A numerical-modeling study was done to better understand hydrologic-system responses to ground-water withdrawals in the Hunt-Annaquatucket-Pettaquamscutt (HAP) stream-aquifer system of Rhode Island. System responses were determined by use of steady-state and transient numerical ground-water-flow models. These models were initially developed in the late 1990s as part of a larger study...
Morphology and textures of modern sediments on the inner shelf of South Carolina's Long Bay from Little River Inlet to Winyah Bay
J. F. Denny, W. E. Baldwin, W. C. Schwab, P. T. Gayes, R. Morton, N. W. Driscoll
2007, Open-File Report 2005-1345
High-resolution sea-floor mapping techniques, including sidecan-sonar, seismic-reflection, swath bathymetric systems, and bottom sampling, were used to map the geologic framework offshore of the northern South Carolina coast in order to provide a better understanding of the physical processes controlling coastal erosion and shoreline change. Four general sea floor environments were...
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...
Stage-Discharge Relations for the Colorado River in Glen, Marble, and Grand Canyons, Arizona, 1990-2005
Joseph E. Hazel Jr., Matt Kaplinski, Rod Parnell, Keith Kohl, David J. Topping
2007, Open-File Report 2006-1243
This report presents stage-discharge relations for 47 discrete locations along the Colorado River, downstream from Glen Canyon Dam. Predicting the river stage that results from changes in flow regime is important for many studies investigating the effects of dam operations on resources in and along the Colorado River. The empirically...
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...
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...
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...
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...
Estimated Magnitudes and Recurrence Intervals of Peak Flows on the Mousam and Little Ossipee Rivers for the Flood of April 2007 in Southern Maine
Glenn A. Hodgkins, Gregory J. Stewart, Timothy A. Cohn, Robert W. Dudley
2007, Open-File Report 2007-1146
Large amounts of rain fell on southern Maine from the afternoon of April 15, 2007, to the afternoon of April 16, 2007, causing substantial damage to houses, roads, and culverts. This report provides an estimate of the peak flows on two rivers in southern Maine--the Mousam River and the Little...
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...
Lake-level variability and water availability in the Great Lakes
Douglas A. Wilcox, Todd A. Thompson, Robert K. Booth, J.R. Nicholas
2007, Circular 1311
In this report, we present recorded and reconstructed (pre-historical) changes in water levels in the Great Lakes, relate them to climate changes of the past, and highlight major water-availability implications for storage, coastal ecosystems, and human activities. 'Water availability,' as conceptualized herein, includes a recognition that water must be available...
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...
The Quality of Water and Bottom Material in Lunga Reservoir, Virginia, September 2004 through August 2005
Robert Russell Lotspeich
2007, Open-File Report 2007-1053
Lunga Reservoir is on the U.S. Marine Corps Base in Quantico, which is in the Potomac River basin and the Piedmont Physiographic Province of northern Virginia. Because of the potential use of the reservoir for scuba-diver training and public water supply in addition to current recreational activities, the U.S. Marine...
Developing a new method of measuring dissolution rates of silicate minerals using changes in the isotopic ratio of a spiked solution
L. Harpaz, J. Ganor, T.D. Bullen
2007, Conference Paper, Proceedings of the 12th International Symposium on Water-Rock Interaction
Weathering in the field tends to be incongruent due to the precipitation of secondary phases. However, most laboratory experiments are designed to avoid such precipitation, as it complicates the interpretation of the experimental results. Here we report on a new method that eliminates...
Ground-water recharge in humid areas of the United States: A summary of Ground-Water Resources Program studies, 2003-2006
Geoffrey N. Delin, Dennis W. Risser
2007, Fact Sheet 2007-3007
Increased demands on water resources by a growing population and recent droughts have raised awareness about the adequacy of ground-water resources in humid areas of the United States. The spatial and temporal variability of ground-water recharge are key factors that need to be quantified to determine the sustainability of ground-water...
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...
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...
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...
Water-Use Estimates for West Virginia, 2004
John T. Atkins
2007, Open-File Report 2007-1038
This study estimates the quantity of surface water and ground water used within West Virginia. About 4,787 million gallons per day (Mgal/d) of water were withdrawn from West Virginia surface-water and ground-water sources in 2004, with about 4,641 Mgal/d (97 percent) from surface-water sources and about 146 Mgal/d (3 percent)...
