Municipal GIS database of El Salvador; Volume 2, Jiquilisco, El Salvador
Peter G. Chirico, P.P. Hearn, Ovidio Rivero Bartolomei, S.D. Tanner
2002, Open-File Report 2002-307-B
Revised Protocols for Sampling Algal, Invertebrate, and Fish Communities as Part of the National Water-Quality Assessment Program
Stephen R. Moulton II, Jonathan G. Kennen, Robert M. Goldstein, Julie A. Hambrook
2002, Open-File Report 2002-150
Algal, invertebrate, and fish communities are characterized as part of ecological studies in the U.S. Geological Survey.s National Water-Quality Assessment Program. Information from these ecological studies, together with chemical and physical data, provide an integrated assessment of water quality at local, regional, and national scales. Analysis and interpretation of water-quality...
Volatile organic compound and pesticide data in public water-supply reservoirs and wells, Texas, 1999-2001
Barbara Mahler, M.O. Gary, M.G. Canova, Eric W. Strom, Lynne Fahlquist, Michael E. Dorsey
2002, Open-File Report 2002-93
To provide data for the Texas Source-Water Assessment and Protection Program, the U.S. Geological Survey conducted a synoptic survey of 48 public water-supply reservoirs and 174 public water-supply wells during 1999–2001. The surface-water samples were analyzed for volatile organic compounds and soluble pesticides. The ground-water samples were analyzed for volatile...
Municipal GIS database of El Salvador; Volume 3, La Palma, El Salvador
Peter G. Chirico, P.P. Hearn, Ovidio Rivero Bartolomei, S.D. Tanner
2002, Open-File Report 2002-307-C
Municipal GIS data base of El Salvador; Volume 4, San Salvador, El Salvador
Peter G. Chirico, P.P. Hearn, Ovidio Rivero Bartolomei, S.D. Tanner
2002, Open-File Report 2002-307-D
Municipal GIS database of Guatemala; Volume 1, Antigua, Guatemala
Peter G. Chirico, P.P. Hearn, Ovidio Rivero Bartolomei, S.D. Tanner
2002, Open-File Report 2002-306-A
Municipal GIS database of Guatemala; Volume 2, Asuncion Mita, Guatemala
Peter G. Chirico, P.P. Hearn, Ovidio Rivero Bartolomei, S.D. Tanner
2002, Open-File Report 2002-306-B
Municipal GIS database of Guatemala; Volume 3; Chimaltenango, Guatemala
Peter G. Chirico, P.P. Hearn, Ovidio Rivero Bartolomei, S.D. Tanner
2002, Open-File Report 2002-306-C
Municipal GIS database of Guatemala; Volume 11, Retalhuleu, Guatemala
Peter G. Chirico, P.P. Hearn, Ovidio Rivero Bartolomei, S.D. Tanner
2002, Open-File Report 2002-306-K
Ground-water, surface-water and water-chemistry data, Black Mesa area, northeastern Arizona: 2001-02
Blakemore E. Thomas
2002, Open-File Report 2002-485
The N aquifer is the major source of water in the 5,400-square-mile area of Black Mesa in northeastern Arizona. Availability of water is an important issue in this area because of continued industrial and municipal use, a growing population, and precipitation of about 6 to 14 inches per year. The...
Results of Hydraulic Tests in Miocene Tuffaceous Rocks at the C-Hole Complex, 1995 to 1997, Yucca Mountain, Nye County, Nevada
Arthur L. Geldon, Amjad M.A. Umari, Michael F. Fahy, John D. Earle, James M. Gemmell, Jon Darnell
2002, Water-Resources Investigations Report 2002-4141
Four hydraulic tests were conducted by the U.S. Geological Survey at the C-hole complex at Yucca Mountain, Nevada, between May 1995 and November 1997. These tests were conducted as part of ongoing investigations to determine the hydrologic and geologic suitability of Yucca Mountain as a potential site for permanent underground...
A three-dimensional numerical model of predevelopment conditions in the Death Valley regional ground-water flow system, Nevada and California
Frank A. D’Agnese, G. M. O’Brien, C.C. Faunt, W.R. Belcher, C. San Juan
2002, Water-Resources Investigations Report 2002-4102
In the early 1990's, two numerical models of the Death Valley regional ground-water flow system were developed by the U.S. Department of Energy. In general, the two models were based on the same basic hydrogeologic data set. In 1998, the U.S. Department of Energy requested that the U.S. Geological Survey...
Argon thermochronology of mineral deposits; a review of analytical methods, formulations, and selected applications
Lawrence W. Snee
2002, Bulletin 2194
40Ar/39Ar geochronology is an experimentally robust and versatile method for constraining time and temperature in geologic processes. The argon method is the most broadly applied in mineral-deposit studies. Standard analytical methods and formulations exist, making the fundamentals of the method well defined. A variety of graphical representations exist for evaluating argon data. A...
Comparisons of water quality during various streamflow conditions in five streams in northern New Jersey, 1982-97
Kathryn Hunchak-Kariouk
2002, Water-Resources Investigations Report 2001-4249
Relations between water-quality and flow characteristics and the relative importance of constant (point sources and ground-water discharge) and intermittent (nonpoint storm runoff) sources were determined for eight water-quality stations located on the Flat Brook and the Delaware, Musconetcong, Whippany, and Saddle Rivers. Water-quality and streamflow data were categorized on the...
Water-quality and ground-water hydrology of the Columbia/Eagle Bluffs Wetland Complex, Columbia, Missouri— 1992-99
Joseph M. Richards
2002, Water-Resources Investigations Report 2002-4227
In an effort to restore riverine wetlands along the Missouri River, the Missouri Department of Conservation constructed the 2,700-acre Eagle Bluffs Conservation Area. The primary water source for managing 1,200 wetland acres on the Eagle Bluffs Conservation Area is treated effluent received from a 91-acre constructed wastewater-treatment wetland operated by...
Standards for the Analysis and Processing of Surface-Water Data and Information Using Electronic Methods
Vernon B. Sauer
2002, Water-Resources Investigations Report 2001-4044
Surface-water computation methods and procedures are described in this report to provide standards from which a completely automated electronic processing system can be developed. To the greatest extent possible, the traditional U. S. Geological Survey (USGS) methodology and standards for streamflow data collection and analysis have been incorporated into these...
Streamflow, water quality, and contaminant loads in the lower Charles River Watershed, Massachusetts, 1999-2000
Robert F. Breault, Jason R. Sorenson, Peter K. Weiskel
2002, Water-Resources Investigations Report 2002-4137
Streamflow data and dry-weather and stormwater water-quality samples were collected from the main stem of the Charles River upstream of the lower Charles River (or the Basin) and from four partially culverted urban streams that drain tributary subbasins in the lower Charles River Watershed. Samples were collected between June 1999...
Assessment of stream quality using biological indices at selected sites in the Brandywine Creek basin, Chester County, Pennsylvania, 1981-97
Andrew G. Reif
2002, Fact Sheet 117-02
In 1970, the Chester County Water Resources Authority (Pennsylvania) and the U.S. Geological Survey (USGS) established a longterm water-quality network with the goal of assessing the quality of streams in the county and understanding stream changes in response to urbanization using benthic-macroinvertebrate data. This database represents one of the longest...
Assessment of stream quality using biological indices at selected sites in the Red Clay and White Clay Creek basins, Chester County, Pennsylvania, 1981-97
Andrew G. Reif
2002, Fact Sheet 118-02
In 1970, the Chester County Water Resources Authority (Pennsylvania) and the U.S. Geological Survey (USGS) established a long-term water-quality network with the goal of assessing the quality of streams in the county and understanding stream changes in response to urbanization using benthic-macroinvertebrate data. This database represents one of the longest...
Ground displacements caused by aquifer-system water-level variations observed using interferometric synthetic aperture radar near Albuquerque, New Mexico
Charles E. Heywood, Devin L. Galloway, Sylvia V. Stork
2002, Water-Resources Investigations Report 2002-4235
Six synthetic aperture radar (SAR) images were processed to form five unwrapped interferometric (InSAR) images of the greater metropolitan area in the Albuquerque Basin. Most interference patterns in the images were caused by range displacements resulting from changes in land-surface elevation. Loci of land- surface elevation changes correlate with changes in...
Assessment of stream quality using biological indices at selected sites in the Big Elk and Octoraro Creek basins, Chester County, Pennsylvania, 1981-97
Andrew G. Reif
2002, Fact Sheet 115-02
IntroductionIn 1970, the Chester County Water Resources Authority (Pennsylvania) and the U.S. Geological Survey (USGS) established a long-term water-quality network with the goal of assessing the quality of streams in the county and understanding stream changes in response to urbanization using benthic-macroinvertebrate data. This database represents one of the longest...
Crustal structure of the coastal and marine San Francisco Bay region, California
Thomas E. Parsons, editor(s)
2002, Professional Paper 1658
As of the time of this writing, the San Francisco Bay region is home to about 6.8 million people, ranking fifth among population centers in the United States. Most of these people live on the coastal lands along San Francisco Bay, the Sacramento River delta, and the Pacific coast. The...
Observed and predicted pier scour in Maine
Glenn A. Hodgkins, Pamela J. Lombard
2002, Water-Resources Investigations Report 2002-4229
Pier-scour and related data were collected and analyzed for nine high river flows at eight bridges across Maine from 1997 through 2001. Six bridges had multiple piers. Fifteen of 23 piers where data were measured during a high flow had observed maximum scour depths ranging from 0.5 feet (ft) to...
A statistical model for estimating stream temperatures in the Salmon and Clearwater River basins, central Idaho
Mary M. Donato
2002, Water-Resources Investigations Report 2002-4195
A water-quality standard for temperature is critical for the protection of threatened and endangered salmonids, which need cold, clean water to sustain life. The Idaho Department of Environmental Quality has established temperature standards to protect salmonids, yet little is known about the normal range of temperatures of most Idaho streams....
Assessment of stream quality using biological indices at selected sites in the Delaware River basin, Chester County, Pennsylvania, 1981-97
Andrew G. Reif
2002, Fact Sheet 116-02
IntroductionIn 1970, the Chester County Water Resources Authority (Penn-sylvania) and the U.S. Geological Survey (USGS) established a long-term water-quality network with the goal of assessing the quality of streams in the county and understanding stream changes in response to urbanization using benthic-macroinvertebrate data. This database represents one of the longest...