Geophysical surveys of Bear Lake, Utah-Idaho, September, 2002
Jane F. Denny, Steve M. Colman
2003, Open-File Report 2003-150
The U.S. Geological Survey, in cooperation with researchers from several universities, has been studying the sediments of Bear Lake since 1996. The general purpose of this effort is to reconstruct past limnological conditions and regional climate on a range of timescales, from hundreds of years to hundreds of thousands of...
Texture, Carbonate Content, and Preliminary Maps of Surficial Sediments of the Flower Garden Banks Area, Northwestern Gulf of Mexico Outer Shelf
Kathryn M. Scanlon, Seth D. Ackerman, Jill E. Rozycki
2003, Open-File Report 2003-2
The purpose of this report is to release texture and carbonate content analyses of 107 seafloor sediments collected within and near the East and West Flower Garden Banks areas of the Sanctuary and to show relationships between these data and existing bathymetric data. The sediment data, in conjunction with previously...
A summary report of sediment processes in Chesapeake Bay and watershed
Michael J. Langland, Thomas Cronin, editor(s)
2003, Water-Resources Investigations Report 2003-4123
The Chesapeake Bay, the Nation's largest estuary, has been degraded because of diminished water quality, loss of habitat, and over-harvesting of living resources. Consequently, the bay was listed as an impaired water body due to excess nutrients and sediment. The Chesapeake Bay Program (CBP), a multi-jurisdictional partnership, completed an agreement...
Bed-sediment grain-size and morphologic data from Suisun, Grizzly, and Honker Bays, CA, 1998-2002
Margaret A. Hampton, Noah P. Snyder, John L. Chin, Dan W. Allison, David M. Rubin
2003, Open-File Report 2003-250
The USGS Place Based Studies Program for San Francisco Bay investigates this sensitive estuarine system to aid in resource management. As part of the inter-disciplinary research program, the USGS collected side-scan sonar data and bed-sediment samples from north San Francisco Bay to characterize bed-sediment texture and investigate temporal trends in...
User's Manual for the National Water-Quality Assessment Program Invertebrate Data Analysis System (IDAS) Software: Version 3
Thomas F. Cuffney
2003, Open-File Report 2003-172
The Invertebrate Data Analysis System (IDAS) software provides an accurate, consistent, and efficient mechanism for analyzing invertebrate data collected as part of the National Water-Quality Assessment Program and stored in the Biological Transactional Database (Bio-TDB). The IDAS software is a stand-alone program for personal computers that run Microsoft (MS) Windows?....
Crater Lake revealed
David W. Ramsey, Peter Dartnell, Charles R. Bacon, Joel E. Robinson, James V. Gardner
2003, IMAP 2790
Around 500,000 people each year visit Crater Lake National Park in the Cascade Range of southern Oregon. Volcanic peaks, evergreen forests, and Crater Lake’s incredibly blue water are the park’s main attractions. Crater Lake partially fills the caldera that formed approximately 7,700 years ago by the eruption and subsequent collapse...
Geologic map of the Big Delta B-2 quadrangle, east-central Alaska
Warren C. Day, John N. Aleinikoff, Paul Roberts, Moira Smith, Bruce M. Gamble, Mitchell W. Henning, Larry P. Gough, Laurie C. Morath
2003, IMAP 2788
New 1:63,360-scale geologic mapping of the Big Delta B-2 quadrangle provides important data on the structural setting and age of geologic units, as well as on the timing of gold mineralization plutonism within the Yukon-Tanana Upland of east-central Alaska. Gold exploration has remained...
The National Map: from geography to mapping and back again
John A. Kelmelis, Mark L. DeMulder, Charles E. Ogrosky, J. Nicholas Van Driel, Barbara J. Ryan
2003, Photogrammetric Engineering and Remote Sensing (69) 1109-1118
When the means of production for national base mapping were capital intensive, required large production facilities, and had ill-defined markets, Federal Government mapping agencies were the primary providers of the spatial data needed for economic development, environmental management, and national defense. With desktop geographic information systems now ubiquitous, source data...
Introduction to physical properties and elasticity models
Jack Dvorkin, Michael B. Helgerud, William F. Waite, Stephen H. Kirby, Amos Nur
2003, Book chapter, Natural gas hydrate in oceanic and permafrost environments
Estimating the in situ methane hydrate volume from seismic surveys requires knowledge of the rock physics relations between wave speeds and elastic moduli in hydrate/sediment mixtures. The elastic moduli of hydrate/sediment mixtures depend on the elastic properties of the individual sedimentary particles and the manner in which they are arranged....
Reproductive maturation and senescence in the female brown bear
Charles C. Schwartz, Kim A. Keating, Harry V. Reynolds III, Victor G. Barnes Jr., Richard A. Sellers, J. E. Swenson, Sterling D. Miller, B. N. McLellan, Jeffrey A. Keay, Robert McCann, Michael Gibeau, Wayne F. Wakkinen, Richard D. Mace, Wayne Kasworm, Rodger Smith, Steven Herrero
2003, Ursus (14) 109-119
Changes in age-specific reproductive rates can have important implications for managing populations, but the number of female brown (grizzly) bears (Ursus arctos) observed in any one study is usually inadequate to quantify such patterns, especially for older females and in hunted areas. We examined patterns of reproductive maturation and senescence...
Carbon dynamics and land-use choices: building a regional-scale multidisciplinary model
Suzi Kerr, Shu-Guang Liu, Alexander S.P. Pfaff, R. Flint Hughes
2003, Journal of Environmental Management (69) 25-37
Policy enabling tropical forests to approach their potential contribution to global-climate-change mitigation requires forecasts of land use and carbon storage on a large scale over long periods. In this paper, we present an integrated modeling methodology that addresses these needs. We model the dynamics of the human land-use system and...
Assessing vegetation response to drought in the northern Great Plains using vegetation and drought indices
Lei Ji, Albert J. Peters
2003, Remote Sensing of Environment (87) 85-98
The Normalized Difference Vegetation Index (NDVI) derived from the Advanced Very High Resolution Radiometer (AVHRR) has been widely used to monitor moisture-related vegetation condition. The relationship between vegetation vigor and moisture availability, however, is complex and has not been adequately studied with satellite sensor data. To better understand this relationship,...
Urban land-cover change detection through sub-pixel imperviousness mapping using remotely sensed data
Limin Yang, George Z. Xian, Jacqueline M. Klaver, Brian Deal
2003, Photogrammetric Engineering and Remote Sensing (69) 1003-1010
We developed a Sub-pixel Imperviousness Change Detection (SICD) approach to detect urban land-cover changes using Landsat and high-resolution imagery. The sub-pixel percent imperviousness was mapped for two dates (09 March 1993 and 11 March 2001) over western Georgia using a regression tree algorithm. The accuracy of the predicted imperviousness was...
Maps and data from a trench investigation of the Utsalady Point Fault, Whidbey Island, Washington
Samuel Y. Johnson, Alan R. Nelson, Stephen F. Personius, Ray E. Wells, Harvey M. Kelsey, Brian L. Sherrod, Koji Okumura, Rich Koehler, Robert C. Witter, Lee-Ann Bradley, David J. Harding
2003, Miscellaneous Field Studies Map 2420
No abstract available....
Klamath River Basin Hydrologic Conditions Prior to the September 2002 Die-Off of Salmon and Steelhead
Dennis D. Lynch, John C. Risley
2003, Water-Resources Investigations Report 2003-4099
More than 33,000 salmon and steelhead died in the lower Klamath River in late September 2002 on their way to spawning areas upstream. According to the California Department of Fish and Game, the cause of death was infection by protozoan and bacterial pathogens. Two factors that may have contributed to...
Simulation of streamflow and water quality in the White Clay Creek subbasin of the Christina River Basin, Pennsylvania and Delaware, 1994-98
Lisa A. Senior, Edward H. Koerkle
2003, Water-Resources Investigations Report 2003-4031
The Christina River Basin drains 565 square miles (mi2) in Pennsylvania, Maryland, and Delaware. Water from the basin is used for recreation, drinking water supply, and to support aquatic life. The Christina River Basin includes the major subbasins of Brandywine Creek, White Clay Creek, and Red Clay Creek. The White...
Tracing reclaimed water in the Menifee, Winchester, and Perris-South ground-water subbasins, Riverside County, California
Charles A. Kaehler, Kenneth Belitz
2003, Water-Resources Investigations Report 2003-4039
As a component in the management of water resources in the Menifee, Winchester, and Perris-South subbasins in Riverside County, California, ponds are operated by the Eastern Municipal Water District for the temporary storage of reclaimed water that is produced by several regional water-reclamation facilities. A primary goal of this study...
Patterns and sources of fecal coliform bacteria in three streams in Virginia, 1999-2000
Kenneth Hyer, Douglas Moyer
2003, Water-Resources Investigations Report 2003-4115
Surface-water impairment by fecal coliform bacteria is a water-quality issue of national scope and importance. In Virginia, more than 175 stream segments are on the Commonwealth's 1998 303(d) list of impaired waters because of elevated concentrations of fecal coliform bacteria. These fecal coliform-impaired stream segments require the development of total maximum daily load...
Phosphorus concentrations, loads, and yields in the Illinois River Basin, Arkansas and Oklahoma, 1997-2001
Barbara E. Pickup, William J. Andrews, Brian E. Haggard, W. Reed Green
2003, Water-Resources Investigations Report 2003-4168
The Illinois River and tributaries, Flint Creek and the Baron Fork, are designated scenic rivers in Oklahoma. Recent phosphorus increases in streams in the basin have resulted in the growth of excess algae, which have limited the aesthetic benefits of water bodies in the basin, especially the Illinois River and...
Trends in chemical concentration in sediment cores from three lakes in New Jersey and one lake on Long Island, New York
Gary R. Long, Edward C. Callender, Mark A. Ayers, Peter C. Van Metre
2003, Water-Resources Investigations Report 2002-4272
Sediment cores were extracted from three lakes in northeastern New Jersey and one lake on western Long Island, New York, as part of the U.S. Geological Survey National Water-Quality Assessment Program. Sediment layers were dated by use of cesium-137 (137Cs), copper, lead, or dichlorodiphenyl-trichloroethane (DDT) profiles. Sediment layers were analyzed...
Collecting peak-flow data in Ohio through the use of crest-stage gages
Water Resources Division, U.S. Geological Survey
2003, Fact Sheet 059-03
Reconnaissance data for glyphosate, other selected herbicides, their degradation products, and antibiotics in 51 streams in nine midwestern states, 2002
Elisabeth A. Scribner, William A. Battaglin, Julie E. Dietze, E.M. Thurman
2003, Open-File Report 2003-217
Since 1989, the U.S. Geological Survey has conducted periodic reconnaissance studies of streams in the Midwestern United States to determine the geographic and seasonal distribution of herbicide compounds. These studies have documented that large amounts of acetochlor, alachlor, atrazine, cyanazine, metolachlor, and their degradation products are flushed into streams during...
Changes in streamflow and summary of major-ion chemistry and loads in the North Fork Red River basin upstream from Lake Altus, northwestern Texas and western Oklahoma, 1945-1999
S. Jerrod Smith, Kenneth L. Wahl
2003, Water-Resources Investigations Report 2003-4086
Upstream from Lake Altus, the North Fork Red River drains an area of 2,515 square miles. The quantity and quality of surface water are major concerns at Lake Altus, and water-resource managers and consumers need historical information to make informed decisions about future development. The Lugert-Altus Irrigation District relies on...
Simulation of streamflow and estimation of streamflow constituent loads in the San Antonio River watershed, Bexar County, Texas, 1997-2001
Darwin J. Ockerman, Kenna C. McNamara
2003, Water-Resources Investigations Report 2003-4030
The U.S. Geological Survey developed watershed models (Hydrological Simulation Program—FORTRAN) to simulate streamflow and estimate streamflow constituent loads from five basins that compose the San Antonio River watershed in Bexar County, Texas. Rainfall and streamflow data collected during 1997–2001 were used to calibrate and test the model. The model was...
Numerical simulation of ground-water flow in La Crosse County, Wisconsin, and into nearby pools of the Mississippi River
Randall J. Hunt, David A. Saad, Dawn M. Chapel
2003, Water-Resources Investigations Report 2003-4154
This report describes a two-dimensional regional screening model and two associated three-dimensional ground-water flow models that were developed to simulate the ground-water flow systems in La Crosse County, Wisconsin, and Pool 8 of the Mississippi River. Although the geographic extents of the three-dimensional models were slightly different, both were derived...
