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Page 1282, results 32026 - 32050

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Hydrologic and water-quality data for U.S. Coast Guard Support Center Kodiak, Alaska, 1987-89
R. L. Glass
1996, Open-File Report 96-498
Hydrologic and water-quality data were collected at the U.S. Coast Guard Support Center Kodiak on Kodiak Island, Alaska, to determine regional ground-water conditions and if contamination of soils, ground water, or surface water has occurred. Eighteen areas of possible contamination were identified. Ground-water levels, surface- water stages, surface-water discharges, and...
Techniques for estimating monthly mean streamflow at gaged sites and monthly streamflow duration characteristics at ungaged sites in central Nevada
G. W. Hess, L. R. Bohman
1996, Open-File Report 96-559
Techniques for estimating monthly mean streamflow at gaged sites and monthly streamflow duration characteristics at ungaged sites in central Nevada were developed using streamflow records at six gaged sites and basin physical and climatic characteristics. Streamflow data at gaged sites were related by regression techniques to concurrent flows at nearby...
Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory-Preparation procedure for aquatic biological material determined for trace metals
Gerald L. Hoffman
1996, Open-File Report 96-362
A method for the chemical preparation of tissue samples that are subsequently analyzed for 22 trace metals is described. The tissue-preparation procedure was tested with three National Institute of Standards and Technology biological standard reference materials and two National Water Quality Laboratory homogenized biological materials. A low-temperature (85 degrees Celsius)...
Assessment of scour-critical data collected at selected bridges and culverts in South Carolina, 1990-92
N.M. Hurley Jr.
1996, Open-File Report 96-350
Data at bridges and culverts were collected at 3,506 stream crossings in South Carolina during 1990-92. The data include general information unique to the structure; structural data; and hydraulic, geomorphic, and vegetation information. The data are stored in the U.S. Geological Survey South Carolina District Bridge-Scour Data Base. Observed- and...
Evaluation and modification of five techniques for estimating stormwater runoff for watersheds in west-central Florida
J.T. Trommer, J.E. Loper, K.M. Hammett
1996, Water-Resources Investigations Report 96-4158
Several traditional techniques have been used for estimating stormwater runoff from ungaged watersheds. Applying these techniques to water- sheds in west-central Florida requires that some of the empirical relationships be extrapolated beyond tested ranges. As a result, there is uncertainty as to the accuracy of these estimates. Sixty-six storms occurring...
Variation in the relation of rainfall to runoff from residential lawns in Madison, Wisconsin, July and August 1995
A.D. Legg, R.T. Bannerman, John Panuska
1996, Water-Resources Investigations Report 96-4194
The quality of runoff from residential lawns is a concern for municipal stormwater management programs. Land-use based computer models are increasingly being used to assess the impact of lawn runoff on urban watersheds. To accurately model the runoff for residential lawns, the variation in the relation of rainfall to runoff...
Ground-water recharge to the regolith-fractured crystalline rock aquifer system, Orange County, North Carolina
C. C. Daniel III
1996, Water-Resources Investigations Report 96-4220
Quantitative information concerning recharge rates to aquifers and ground water in storage is needed to manage the development of ground-water resources. The amount of ground water available from the regolith-fractured crystalline rock aquifer system in Orange County, North Carolina, is largely unknown. If historical patterns seen throughout the Piedmont continue...
Geochemical and isotopic composition of ground water, with emphasis on sources of sulfate, in the upper Floridan aquifer and intermediate aquifer system in southwest Florida
Laura A. Sacks, Ann B. Tihansky
1996, Water-Resources Investigations Report 96-4146
In southwest Florida, sulfate concentrations in water from the Upper Floridan aquifer and overlying intermediate aquifer system are commonly above 250 milligrams per liter (the drinking water standard), particularly in coastal areas. Possible sources of sulfate include dissolution of gypsum from the deeper part of the Upper Floridan aquifer or...
Water-use analysis program for the Neshaminy Creek basin, Bucks and Montgomery counties, Pennsylvania
Curtis L. Schreffler
1996, Water-Resources Investigations Report 96-4127
A water-use analysis computer program was developed for the Neshaminy Creek Basin to assist in managing and allocating water resources in the basin. The program was developed for IBM-compatible personal computers. Basin analysis and the methodologies developed for the Neshaminy Creek Basin can be transferred to other watersheds. The development...
Simulation of water level, streamflow, and mass transport for the Cooper and Wando rivers near Charleston, South Carolina, 1992-95
P.A. Conrads, P.A. Smith
1996, Water-Resources Investigations Report 96-4237
The one-dimensional, unsteady-flow model, BRANCH, and the Branched Lagrangian Transport Model (BLTM) were calibrated and validated for the Cooper and Wando Rivers near Charleston, South Carolina. Data used to calibrate the BRANCH model included water-level data at four locations on the Cooper River and two locations on the Wando River,...
Water Budget for the Lahaina District, Island of Maui, Hawaii
Patricia J. Shade
1996, Water-Resources Investigations Report 96-4238
Ground-water recharge is estimated as the residual component of a monthly water budget calculated using long-term average rainfall, streamflow, irrigation, pan-evaporation data, and soil characteristics. The water-budget components are defined seasonally, through the use of monthly data, and spatially by topographic and geologic areas, through the use of a geographic...
Streamflow and Suspended-Sediment Loads Before and During Highway Construction, North Halawa, Haiku, and Kamooalii Drainage Basins, Oahu, Hawaii, 1983-91
Barry R. Hill
1996, Water-Resources Investigations Report 96-4259
Concern over potential effects from construction of the H-3 highway on Oahu, Hawaii, prompted a long-term study of streamflow and suspended-sediment transport at a network of five stream-gaging stations along the highway route. This report presents results for 1983-91, which included pre-construction and construction periods at all stream-gaging stations. Annual rainfall,...
Scour assessments and sediment-transport simulation for selected bridge sites in South Dakota
C. A. Niehus
1996, Water-Resources Investigations Report 96-4075
Scour at bridges is a major concern in the design of new bridges and in the evaluation of structural stability of existing bridges. Equations for estimating pier, contraction, and abutment scour have been developed from numerous laboratory studies using sand-bed flumes, but little verification of these scour equations has been...
Assessment of the fresh- and brackish-water resources underlying Dunedin and adjacent areas of northern Pinellas County, Florida
L. A. Knochenmus, E. S. Swenson
1996, Water-Resources Investigations Report 96-4164
The city of Dunedin is enhancing their potable ground-water resources through desalination of brackish ground water. An assessment of the fresh- and brackish-water resources in the Upper Floridan aquifer was needed to estimate the changes that may result from brackish-water development. The complex hydrogeologic framework underlying Dunedin and adjacent areas...
Occurrence of selected trace elements and organic compounds and their relation to land use in the Willamette River basin, Oregon, 1992-94
Chauncey W. Anderson, Frank A. Rinella, Stewart A. Rounds
1996, Water-Resources Investigations Report 96-4234
Between 1992 and 1994, the U.S.Geological Survey conducted a study of trace elements and organic compounds in the Willamette River Basin, Oregon, as part of the Willamette River Basin Water Quality Study. Low-level analyses were performed for trace elements, volatile organic compounds, organochlorine compounds, and pesticides. Overall, 94 water samples...
Hydrogeology and water quality of the shallow aquifer system at the Explosive Experimental Area, Naval Surface Warfare Center, Dahlgren site, Dahlgren, Virginia
C. F. Bell
1996, Water-Resources Investigations Report 96-4209
In October 1993, the U.S. Geological Survey began a study to characterize the hydrogeology of the shallow aquifer system at the Explosive Experimental Area, Naval Surface Warfare Center, Dahlgren Site, Dahlgren, Virginia, which is located on the Potomac River in the Coastal Plain Physiographic Province. The study provides a description...
Trends in nutrients and suspended solids at the Fall Line of five tributaries to the Chesapeake Bay in Virginia, July 1988 through June 1995
C. F. Bell, D.L. Belval, J.P. Campbell
1996, Water-Resources Investigations Report 96-4191
Water-quality samples were collected at the Fall Line of five tributaries to the Chesapeake Bay in Virginia during a 6- to 7-year period. The water-quality data were used to estimate loads of nutrients and suspended solids from these tributaries to the non-tidal part of Chesapeake Bay Basin and to identify...
Data from selected U.S. Geological Survey National Stream Water-Quality Networks (WQN)
Richard B. Alexander, J. R. Slack, A. S. Ludtke, K. K. Fitzgerald, T. L. Schertz, L. I. Briel, K. P. Buttleman
1996, Data Series 37
This CD-ROM set contains data from two USGS national stream water-quality networks, the Hydrologic Benchmark Network (HBN) and the National Stream Quality Accounting Network (NASQAN), operated during the past 30 years. These networks were established to provide national and regional descriptions of stream water-quality conditions and trends, based on uniform...
Sediment and nutrient trapping efficiency of a constructed wetland near Delavan Lake, Wisconsin, 1993-1995
John F. Elder, Gerald L. Goddard
1996, Fact Sheet 232-96
Jackson Creek Wetland a 95-acre shallow prairie marsh containing three sediment retention ponds was constructed in 1992 to reduce sediment and nutrient in- flow to eutrophic Delavan Lake. The function of the wetland as a retention system for suspended sediments and nutrients (total and dissolved phosphorus, total ammonia plus organic...
Hydrology and water quality of Park Lake, south-central Wisconsin
P.A. Kammerer
1996, Fact Sheet 197-96
Park Lake extends to the northeast from the village of Pardeeville in Columbia County (fig. 1). Local residents perceive water-quality problems in the lake that include excessive algae and aquatic plant growth. Algae and plant growth in a lake are controlled, in part, by the availability of phosphorus in the...