Ground-water development and the effects on ground-water levels and water quality in the town of Atherton, San Mateo County, California
Loren F. Metzger, John L. Fio
1997, Water-Resources Investigations Report 97-4033
The installation of at least 100 residential wells in the town of Atherton, California, during the 198792 drought has raised concerns about the increased potential for land subsidence and salt water intrusion. Data were collected and monitor ing networks were established to assess current processes and to monitor future conditions...
Hydrologic and water-quality data from selected sites in the Charleston Harbor Estuary and tributary rivers, South Carolina, water years 1992-95
P.A. Conrads, T.W. Cooney, K.B. Long
1997, Open-File Report 96-418
Reconnaissance of surface-water quality in the North Platte Natural Resources District, western Nebraska, 1993
G. V. Steele, J. C. Cannia
1997, Water-Resources Investigations Report 96-4316
In 1993, the U.S. Geological Survey and the North Platte Natural Resources District began a 3-year study to determine the geohydrology and water quality of the North Platte River alluvial aquifer near Oshkosh, Garden County, Nebraska. The objectives of the study were to determine the geohydrologic properties of the North...
Hydrogeology and simulation of ground-water flow in the thick regolith-fractured crystalline rock aquifer system of Indian Creek basin, North Carolina
Charles C. Daniel, Douglas G. Smith, Jo Leslie Eimers
1997, Water Supply Paper 2341-C
The Indian Creek Basin in the southwestern Piedmont of North Carolina is one of five type areas studied as part of the Appalachian Valleys-Piedmont Regional Aquifer-System analysis. Detailed studies of selected type areas were used to quantify ground-water flow characteristics in various conceptual hydrogeologic terranes. The conceptual hydrogeologic terranes are...
Method for rapid estimation of scour at highway bridges based on limited site data
S.R. Holnbeck, Charles Parrett
1997, Water-Resources Investigations Report 96-4310
Limited site data were used to develop a method for rapid estimation of scour at highway bridges. The estimates can be obtained in a matter of hours rather than several days as required by more-detailed methods. Such a method is important because scour assessments are needed to identify scour-critical...
Development of an 11- and 14-Digit Hydrologic Unit Boundary Layer for the Middle Ohio-Raccoon Basin Using a Geographic Information System
Hugh L. Nelson, Aimee C. Downs, Steve D. Crabtree, Doug H. Hines
1997, Open-File Report 97-616
Development of an 11- and 14-digit hydrologic unit boundary layer for the Lower Ohio-Salt River Basin using a Geographic Information System
Hugh L. Nelson, Aimee C. Downs, Steve D. Crabtree, Doug H. Hines
1997, Open-File Report 97-614
Development of an 11- and 14-Digit Hydrologic Unit Boundary Layer for the Lower Ohio River Basin Using a Geographic Information System
Hugh L. Nelson, Aimee C. Downs, Steve D. Crabtree, Doug H. Hines
1997, Open-File Report 97-620
Development of an 11- and 14-Digit Hydrologic Unit Boundary Layer for the Lower Cumberland River Basin Using a Geographic Information System
Hugh L. Nelson, Aimee C. Downs, Steve D. Crabtree, Doug H. Hines
1997, Open-File Report 97-621
Review of selected features of the natural system model, and suggestions for applications in South Florida
Jerad Bales, Janice M. Fulford, Eric D. Swain
1997, Water-Resources Investigations Report 97-4039
A study was conducted to review selected features of the Natural System Model, version 4.3 . The Natural System Model is a regional-scale model that uses recent climatic data and estimates of historic vegetation and topography to simulate pre-canal-drainage hydrologic response in south Florida. Equations used to represent the hydrologic...
Development of an 11- and 14-digit hydrologic unit boundary layer for the Lower Tennessee River Basin using a Geographic Information System
Hugh L. Nelson, Aimee C. Downs, Steve D. Crabtree, Doug H. Hines
1997, Open-File Report 97-622
Development of an 11- and 14-Digit Hydrologic Unit Boundary Layer for the Hatchie-Obion River Basin Using a Geographic Information System
Hugh L. Nelson, Aimee C. Downs, Steve D. Crabtree, Doug H. Hines
1997, Open-File Report 97-623
Development of an 11- and 14-Digit Hydrologic Unit Boundary Layer for the Middle Ohio-Little Miami River Basin Using a Geographic Information System
Hugh L. Nelson, Aimee C. Downs, Steve D. Crabtree, Doug H. Hines
1997, Open-File Report 97-613
Development of an 11- and 14-Digit Hydrologic Unit Boundary Layer for the Licking River Basin Using a Geographic Information System
Hugh L. Nelson, Aimee C. Downs, Steve D. Crabtree, Doug H. Hines
1997, Open-File Report 97-615
Development of an 11- and 14-digit hydrologic unit boundary layer for the Big Sandy River Basin using a Geographic Information System
Hugh L. Nelson, Aimee C. Downs, Steve D. Crabtree, Doug H. Hines
1997, Open-File Report 97-617
Development of an 11- and 14-digit hydrologic unit boundary layer for the Upper Cumberland River Basin using a Geographic Information System
Hugh L. Nelson, Aimee C. Downs, Steve D. Crabtree, Doug H. Hines
1997, Open-File Report 97-618
Development of an 11- and 14-digit hydrologic unit boundary layer for the Green River Basin using a Geographic Information System
Hugh L. Nelson, Aimee C. Downs, Steve D. Crabtree, Doug H. Hines
1997, Open-File Report 97-619
Wetland losses related to fault movement and hydrocarbon production, southeastern Texas coast
William A. White, Robert A. Morton
1997, Journal of Coastal Research (13) 1305-1320
Time series analyses of surface fault activity and nearby hydrocarbon production from the southeastern Texas coast show a high correlation among volume of produced fluids, timing of fault activation, rates of subsidence, and rates of wetland loss. Greater subsidence on the downthrown sides of faults contributes to more frequent flooding...
Vulnerability of ground water to atrazine leaching in Kent County, Michigan
D. J. Holtschlag, C. L. Luukkonen
1997, Water-Resources Investigations Report 96-4198
A steady-state model of pesticide leaching through the unsaturated zone was used with readily available hydrologic, lithologic, and pesticide characteristics to estimate the vulnerability of the near-surface aquifer to atrazine contamination from non-point sources in Kent County, Michigan. The modelcomputed fraction of atrazine remaining at the water table, RM, was...
What are volcano hazards?
Bobbie Myers, Steven R. Brantley, Peter R. Stauffer, James W. Hendley II
1997, Fact Sheet 002-97
Volcanoes give rise to numerous geologic and hydrologic hazards. U.S. Geological Survey (USGS) scientists are assessing hazards at many of the almost 70 active and potentially active volcanoes in the United States. They are closely monitoring activity at the most dangerous of these volcanoes and are prepared to issue warnings...
Precipitation-runoff and streamflow-routing models for the Willamette River basin, Oregon
Antonius Laenen, John C. Risley
1997, Water-Resources Investigations Report 95-4284
Precipitation-runoff and streamflow-routing models were constructed and assessed as part of a water-quality study of the Willamette River Basin. The study was a cooperative effort between the U.S. Geological Survey (USGS) and the Oregon Department of Environmental Quality (ODEQ) and was coordinated with the USGS National Water-Quality Assessment (NAWQA) study...
A comparison of wetland tree growth response to hydrologic regime in Louisiana and South Carolina
Bobby D. Keeland, William Conner, Rebecca R. Sharitz
1997, Forest Ecology and Management (90) 237-250
Numerous investigations have examined the growth of wetland tree species under a variety of hydrologic conditions. Most studies have compared flooded versus non-flooded conditions in greenhouses or in one to a few field sites near each other or within the same region. Comparisons of wetland tree growth among widely separated...
A study of the temporal variability of atrazine in private well water. part ii: analysis of data
Paul Pinsky, Matthew Lorber, Kent Johnson, Burton Kross, Leon Burmeister, Amina Wilkins, George Hallberg
1997, Environmental Monitoring and Assessment (47) 197-221
In 1988, the Iowa Department of Natural Resources, along withthe University of Iowa, conducted the Statewide Rural WellWater Survey, commonly known as SWRL. A total of 686private rural drinking water wells was selected by use of aprobability sample and tested for pesticides and nitrate. A subsetof these wells, the 10%...
Methods to identify areas susceptible to irrigation-induced selenium contamination in the western United States
Ralph L. Seiler
1997, Fact Sheet 038-97
No abstract available....
Preliminary hydrogeologic assessment of a ground-water contamination area in Wolcott, Connecticut
J. R. Stone, G. D. Casey, R.A. Mondazzi, T.W. Frick
1997, Open-File Report 97-219
Contamination of ground water by volatile organic compounds and inorganic constituents has been identified at a number of industrial sites in the Town of Wolcott, Connecticut. Contamination is also present at a municipal landfill in the City of Waterbury that is upgradient from the industrial sites in...
