Observations of environmental change in Grand Canyon, Arizona
Robert H. Webb, Theodore S. Melis, Richard A. Valdez
2002, Water-Resources Investigations Report 2002-4080
Few scientific data have been collected on pre-dam conditions of the Colorado River corridor through Grand Canyon National Park. Using historical diaries, interviews with pre-dam river runners (referred to as the ?Old Timers?), and historical scientific data and observations, we compiled anecdotal information on environmental change in Grand Canyon. The...
Atmospheric transport of pesticides in the Sacramento, California, metropolitan area, 1996-1997
Michael S. Majewski, David S. Baston
2002, Water-Resources Investigations Report 2002-4100
Weekly composite, bulk air was sampled with respect to wind speed and direction from January 1996 through December 1997 in one urban and two agricultural locations in Sacramento County, California. The sampling sites were located along a north-south transect, the dominant directions of the prevailing winds. The samples were analyzed...
Design of a real-time ground-water level monitoring network and portrayal of hydrologic data in southern Florida
Scott T. Prinos, A.C. Lietz, R.B. Irvin
2002, Water-Resources Investigations Report 2001-4275
Ground-water resources in southern Florida are under increasing stress caused a rapid growth in population. As a result of increased demands on aquifers, water managers need more timely and accurate assessments of ground-water conditions in order to avoid or reduce adverse effects such as saltwater intrusion, loss of pumpage...
Water Resources Data, New Mexico, Water Year 2001
Dave Byrd, Kathy Lange, Linda Beal
2002, Water Data Report NM-01-1
Water-resources data for the 2001 water year for New Mexico consist of records of discharge and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels and water quality in wells and springs. This report contains discharge records for 173 gaging stations; stage and...
Preliminary data used in a study of ground-water flow and ground-water/surface-water interaction in part of the Republican River Basin, Nebraska, Kansas, and Colorado
Michaela R. Johnson, Matthew K. Landon
2002, Open-File Report 2002-263
Water Resources Data, Florida, Water Year 2001, Volume 4. Northwest Florida
Water Resources Division, U.S. Geological Survey
2002, Water Data Report FL-01-4
This report series for the 2001 water year for the state of Florida consists of records for continuous or daily discharge for 387 streams, periodic discharge for 14 streams, continuous or daily stage for 147 streams, periodic stage for 2 streams, peak stage and discharge for 8 streams, continuous or...
Water resources data, New Jersey, water year 2001. Volume 3. Water-quality data
M.J. DeLuca, H.L. Hoppe, H.A. Doyle, B.J. Gray
2002, Water Data Report NJ-01-3
No abstract available. ...
Ground-water levels in the Floridan-Midville aquifer in the Breezy Hill area, Aiken and Edgefield Counties, South Carolina, April 1999-November 2000
Larry G. Harrelson, W. Fred Falls, David C. Prowell
2002, Water-Resources Investigations Report 2002-4075
The Breezy Hill area in Aiken and Edgefield Counties of west-central South Carolina is a rapidly growing region in need of increasing amounts of ground water. From 1995 to 1998, the local water utility increased ground-water withdrawals in the Breezy Hill area from 1.4 to 2.1 million gallons per day...
Streamflow gain/loss in the Republican River Basin, Nebraska, October 1998
Michalea R. Johnson, Jennifer S. Stanton, James F. Cornwall, Matthew K. Landon
2002, Open-File Report 2002-88
This arc and point data set contains streamflow-measurement sites and reaches indicating streamflow gain or loss under base-flow conditions along the Republican River and tributaries in Nebraska during October 25 to 28, 1998 (Boohar, 2000). The streamflow measurements were made to obtain data on ground-water/surface-water interaction. Flow was observed visually...
Summary of suspended-sediment concentration data, San Francisco Bay, California, water year 2000
Paul A. Buchanan, Neil K. Ganju
2002, Open-File Report 2002-146
Suspended-sediment concentration data were collected in San Francisco Bay during water year 2000 (October 1, 1999?September 30, 2000). Optical backscatterance sensors and water samples were used to monitor suspended sediment at one site in Suisun Bay, three sites in San Pablo Bay, two sites in Central San Francisco Bay, and...
Water resources data, Nevada, water year 2001
Kerry T. Garcia, R.H. Munson, R.J. Spaulding, S.L. Vasquez
2002, Water Data Report NV-01-1
Water resources data published herein for the 2001 water year comprise the following records:o Water discharge for 168 gaging stations on streams, canals and drains.o Discharge for 146 peak-flow stations and miscellaneous sites, and 14 springs.o Stage and contents for 20 lakes and reservoirs.o Water-quality data for 95 stream, lake,...
Characterization and analysis of temporal and spatial variations in habitat and macroinvertebrate community structure, Fountain Creek basin, Colorado Springs and vicinity, Colorado, 1998-2001
James F. Bruce
2002, Water-Resources Investigations Report 2002-4093
The Fountain Creek Basin in and around Colorado Springs, Colorado, is affected by various land- and water-use activities. Biological, hydrological, water-quality, and land-use data were collected at 10 sites in the Fountain Creek Basin from April 1998 through April 2001 to provide a baseline characterization of macroinvertebrate communities and habitat...
Time-of-travel of solute data for Mississippi streams
J. Kerry Arthur
2002, Open-File Report 2002-292
This report summarizes the time-of-travel of solutes information for Mississippi streams that is available in the files of the U.S. Geological Survey. The time-of-travel information was tabulated for 926 miles of stream reaches in seven of the ten major drainage basins in the State. The data were collected during studies...
Digital Geospatial Datasets in Support of Hydrologic Investigations of the Colorado Front Range Infrastructure Resources Project
Sharon A. Rafferty, L. R. Arnold, Stephen J. Char
2002, Open-File Report 2002-338
The U.S. Geological Survey developed this dataset as part of the Colorado Front Range Infrastructure Resources Project (FRIRP). One goal of the FRIRP was to provide information on the availability of those hydrogeologic resources that are either critical to maintaining infrastructure along the northern Front Range or that may...
Selected micrometeorological and soil-moisture data at Amargosa Desert Research Site in Nye County near Beatty, Nevada, 1998-2000
Michael J. Johnson, Charles J. Mayers, Brian J. Andraski
2002, Open-File Report 2002-348
Selected micrometeorological and soil-moisture data were collected at the Amargosa Desert Research Site adjacent to a low-level radioactive waste and hazardous chemical waste facility near Beatty, Nev., 1998-2000. Data were collected in support of ongoing research studies to improve the understanding of hydrologic and contaminant-transport processes in arid environments. Micrometeorological...
Water resources data, Oklahoma, water year 2001
R.L. Blazs, D.M. Walters, T.E. Coffey, D.L. Boyle, J.J. Wellman
2002, Water Data Report OK-01-1
No abstract available....
Ground-water quality in the Santa Ana Watershed, California: Overview and data summary
Scott N. Hamlin, Kenneth Belitz, Sarah Kraja, Barbara Dawson
2002, Water-Resources Investigations Report 2002-4243
Water-quality samples were collected from 207 wells in the Santa Ana Basin in the Coastal Range Province of southern California to assess the occurrence and distribution of dissolved constituents in ground water as part of the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) program. These wells were sampled during eight...
Lithogeochemical character of near-surface bedrock in the New England coastal basins
Gilpin R. Robinson Jr., Joseph D. Ayotte, Denise L. Montgomery, Leslie A. DeSimone
2002, Open-File Report 2002-7
This geographic information system (GIS) data layer shows the generalized lithologic and geochemical, termed lithogeochemical, character of near-surface bedrock in the New England Coastal Basin (NECB) study area of the U.S. Geological Survey's National Water Quality Assessment (NAWQA) Program. The area encompasses 23,000 square miles in western and central...
Water-chemistry data for selected springs, geysers, and streams in Yellowstone National Park, Wyoming, 1999-2000
James W. Ball, R. Blaine McCleskey, D. Kirk Nordstrom, JoAnn M. Holloway, Philip L. Verplanck, Sabin A. Sturtevant
2002, Open-File Report 2002-382
Sixty-seven water analyses are reported for samples collected from 44 hot springs and their overflow drainages and two ambient-temperature acid streams in Yellowstone National Park (YNP) during 1990-2000. Thirty-seven analyses are reported for 1999, 18 for June of 2000, and 12 for September of 2000. These water samples were collected and analyzed as...
Spatial digital database for the geology of the San Pedro River Basin in Cochise, Gila, Graham, Pima, and Pinal Counties, Arizona
Karen S. Bolm
2002, Open-File Report 2002-393
This spatial digital database for the geology of the San Pedro River Basin in southeastern Arizona was compiled from three maps by Dickinson (1993, 1998, 2000). Mylar originals of the map sheets were scanned, and the resultant images were rectified to a mathematically-generated set of latitude and longitude registration points....
MODFLOW-2000, the U.S. Geological Survey modular ground-water model -- Documentation of the Model-Layer Variable-Direction Horizontal Anisotropy (LVDA) capability of the Hydrogeologic-Unit Flow (HUF) package
Evan R. Anderman, K.L. Kipp, Mary C. Hill, Johan Valstar, R.M. Neupauer
2002, Open-File Report 2002-409
This report documents the model-layer variable-direction horizontal anisotropy (LVDA) capability of the Hydrogeologic-Unit Flow (HUF) Package of MODFLOW-2000. The LVDA capability allows the principal directions of horizontal anisotropy to be different than the model-grid row and column directions, and for the directions to vary on a cell-by-cell basis within model...
Geology, Geochemistry and Geophysics of Sedimentary Rock-Hosted Au Deposits in P.R. China
Stephen G. Peters
2002, Open-File Report 2002-131
This is the second report concerning results of a joint project between the U.S. Geological Survey and the Tianjin Geological Academy to study sedimentary rock-hosted Au deposits in P.R. China. Since the 1980s, Chinese geologists have devoted a large-scale exploration and research effort to the deposits. As a result, there...
Investigation of water quality and aquatic-community structure in Village and Valley Creeks, City of Birmingham, Jefferson County, Alabama, 2000-01
Ann K. McPherson, Thomas A. Abrahamsen, Celeste A. Journey
2002, Water-Resources Investigations Report 2002-4182
The U.S. Geological Survey conducted a 16-month investigation of water quality, aquatic-community structure, bed sediment, and fish tissue in Village and Valley Creeks, two urban streams that drain areas of highly intensive residential, commercial, and industrial land use in Birmingham, Alabama. Water-quality data were collected between February 2000 and March...
Beowulf Distributed Processing and the United States Geological Survey
Brian G. Maddox
2002, Open-File Report 2002-15
Introduction In recent years, the United States Geological Survey's (USGS) National Mapping Discipline (NMD) has expanded its scientific and research activities. Work is being conducted in areas such as emergency response research, scientific visualization, urban prediction, and other simulation activities. Custom-produced digital data have become essential for these types of activities....
The National Map - Hydrography
Water Resources Division, U.S. Geological Survey
2002, Fact Sheet 060-02
Governments depend on a common set of base geographic information as a tool for economic and community development, land and natural resource management, and health and safety services. Emergency management and homeland security applications rely on this information. Private industry, nongovernmental organizations, and individual citizens use the same geographic data....
