Yields of selected constituents in base flow and stormflow in urban watersheds of Jefferson County, Kentucky, 1988-92
R. D. Evaldi, B.L. Moore
1994, Water-Resources Investigations Report 94-4065
Mean annual base-flow and stormflow yields of selected water-quality constituents from urban watersheds of Jefferson County, Kentucky, were estimated for 1988-92 to help describe the pro portions of constituent transport from point and nonpoint sources. Yield estimates were based on streamflow and water-quality data collected from a network of 25...
National Water-Quality Assessment Program; the Mississippi Embayment
Michael J. Mallory
1994, Fact Sheet 047-94
National Water-Quality Assessment Program; the lower Illinois River Basin
Kelly L. Warner, Arthur R. Schmidt
1994, Fact Sheet 018-94
Stratigraphic notes, 1992: Four short papers propose changes in stratigraphic nomenclature in Vermont, Virginia, Maryland, and the District of Columbia
Water Resources Division, U.S. Geological Survey
1994, Bulletin 2060
No abstract available....
Potentiometric surface of the upper Floridan aquifer system, west-central Florida, May 1994
P. A. Metz, D. L. Brendle
1994, Open-File Report 94-528
A map of the May 1994 potentiometric surface of the Upper Floridan aquifer in west-central Florida depicts ground-water levels for the the annual low water-level period. Water levels, measured in May 1994 were generally lower than those reported for May 1993. In 572 wells with paired measurements, the May 1994...
Guidelines for collecting and processing samples of stream bed sediment for analysis of trace elements and organic contaminants for the National Water-Quality Assessment Program
Larry R. Shelton, Paul D. Capel
1994, Open-File Report 94-458
A major component of the U.S. Geological Survey's National Water-Quality Assessment program is to assess the occurrence and distribution of trace elements and organic contaminants in streams. The first phase of the strategy for the assessment is to analyze samples of bed sediments from depositional zones. Fine-grained particles deposited in...
National Water-Quality Assessment Program: Central Arizona Basins
Gail E. Cordy
1994, Fact Sheet 016-94
In 1991, the U.S. Geological Survey (USGS) began to implement a full-scale National Water-Quality Assessment (NAWQA) program. The long-term goals of the NAWQA program are to describe the status and trends in the quality of a large, representative part of the Nation's surface-water and ground-water resources and to provide a...
Overview of environmental and hydrogeologic conditions at Fort Yukon, Alaska
Allan S. Nakanishi, Joseph M. Dorava
1994, Open-File Report 94-526
The village of Fort Yukon along the Yukon River in east-central Alaska has long cold winters and short summers. The Federal Aviation Administration operates and supports some airport facilities in Fort Yukon and is evaluating the severity of environmental contamination and options for remediation of such contamination at their facilites....
Accounting for Consumptive Use of Lower Colorado River Water in Arizona, California, Nevada, and Utah
Sandra J. Owen-Joyce, Richard P. Wilson
1994, Fact Sheet 074-94
In the Colorado River valley between the east end of Lake Mead and the international boundary with Mexico (see figure), the river is the principal source of water for agricultural, domestic, municipal, industrial, hydroelectric-power generation, and recreational purposes. Water is stored in surface reservoirs and in the river aquifer---permeable sediments...
Idaho's surface-water-quality monitoring program: results from five sites sampled during water years 1990-93
Water Resources Division, U.S. Geological Survey
1994, Fact Sheet 026-94
In 1990, the U.S. Geological Survey (USGS), in cooperation with the Idaho Department of Health and Welfare, Division of Environmental Quality, implemented a statewide water-quality monitoring program in response to Idaho's antidegradation policy as required by the Clean Water Act. The program objective is to provide water-quality managers with a...
Overview of environmental and hydrogeologic conditions at Tanana, Alaska
Allan S. Nakanishi, Joseph M. Dorava
1994, Open-File Report 94-527
The remote Native village of Tanana along the Yukon River in west-central Alaska has long cold winters and short summers. The Federal Aviation Administration owns or operates airway support facilities near Tanana and wishes to consider the subsistence lifestyle of the residents and the quality of the current environment when...
Overview of environmental and hydrogeologic conditions at Saint Marys, Alaska
Allan S. Nakanishi, Joseph M. Dorava
1994, Open-File Report 94-481
The Federal Aviation Administration (FAA) owns or operates airway support facilities near Saint Marys along the Yukon River in west-central Alaska. The FAA is evaluating the severity of environmental contamination and options for remediation of environmental contamination at their facilities. Saint Marys is on a flood plain near the continence...
Overview of environmental and hydrogeologic conditions at Galena, Alaska
Allan S. Nakanishi, Joseph M. Dorava
1994, Open-File Report 94-525
The remote Native village of Galena along the Yukon River in west-central Alaska has long cold winters and short summers that affects the hydrology of the area. The Federal Aviation Administration owns or operates airport support facilities in Galena and wishes to consider the subsistence lifestyle of the residents and...
Water-quality, lithologic, and water-level data for wells in Tulare Basin, Kings, Kern, and Tulare Counties, California, August 1990 to February 1993
Sherrill Beard, Roger Fujii, W. Gary Shanks
1994, Open-File Report 94-334
Much of the Tulare Basin is characterized by saline shallow ground water containing elevated concen- trations of arsenic, selenium, and other trace elements. A comprehensive investigation of ground-water geochemist, and, to a limited extent, hydrology was initiated in response to concerns related to (1) adverse effects on migratory waterfowl of...
Observation-well network for collection of ground-water level data in Massachusetts
Roy S. Socolow
1994, Fact Sheet 017-94
Aquifers--water-bearing deposits of sand and gravel, glacial till, and fractured bedrock--provide an extensive and readily accessible ground-water supply in Massachusetts. Ground water affects our everyday lives, not just in terms of how much water is available, but also in terms of the position of ground-water levels in relation to land...
Comparison of vertical discretization techniques in finite-difference models of ground-water flow; example from a hypothetical New England setting
Philip T. Harte
1994, Open-File Report 94-343
Proper discretization of a ground-water-flow field is necessary for the accurate simulation of ground-water flow by models. Although discretiza- tion guidelines are available to ensure numerical stability, current guidelines arc flexible enough (particularly in vertical discretization) to allow for some ambiguity of model results. Testing of two common types of...
Potentiometric surface of the intermediate aquifer system, west-central Florida, May 1994
P. A. Metz, D. L. Brendle
1994, Open-File Report 94-529
A map of the May 1994 potentiometric surface of the intermediate aquifer system in west-central Florida depicts water levels for the annual low water-level period. Water levels were generally lower than those reported for May 1993. In 135 wells with paired measurements, the May 1994 water levels averaged about 3.84...
Potentiometric surface of the upper Floridan Aquifer in the St. Johns River Water Management District and vicinity, Florida, May 1994
D. M. Schiffer, A. M. O’Reilly, G. G. Phelps, L. A. Bradner, K. J. Halford, R. M. Spechler
1994, Open-File Report 94-495
This map depicts the potentiometric surface of the Upper Floridan aquifer in the St. Johns River Water Management District and vicinity for May 1994. The map is based on water-level measurements made at approximately 1,000 wells and several springs. Data on the map were contoured using 5-foot contour intervals in...
Methods of analysis and quality-assurance practices of the U.S. Geological Survey organic laboratory, Sacramento, California: Determination of pesticides in water by solid-phase extraction and capillary-column gas chromatography/mass spectrometry
Kathryn L. Crepeau, Joseph L. Domagalski, Kathryn Kuivila
1994, Open-File Report 94-362
Analytical method and quality-assurance practices were developed for a study of the fate and transport of pesticides in the Sacramento-San Joaquin Delta and the Sacramento and San Joaquin River. Water samples were filtered to remove suspended parti- culate matter and pumped through C-8 solid-phase extraction cartridges to extract the pesticides....
Potentiometric-surface maps of the Cockfield and lower Wilcox Aquifers in Arkansas, 1991
Paul W. Westerfield
1994, Water-Resources Investigations Report 93-4134
National Water-Quality Assessment Program; the Kanawha-New River Basin, West Virginia, Virginia, and North Carolina
James H. Eychaner
1994, Fact Sheet 019-94
Water-resources data for the Valdosta area, south-central Georgia, 1961-93
James B. McConnell, Eurybiades Busenberg, Niel Plummer
1994, Open-File Report 94-350
The Upper Floridan aquifer is the sole source of water supply for the city of Valdosta, Ga., and much of the surrounding area. Users and water-resources managers and developers are concerned about the quality of water in the aquifer. The water quality of a large part of the Upper Floridan...
Description and application of capture zone delineation for a wellfield at Hilton Head Island, South Carolina
J. E. Landmeyer
1994, Water-Resources Investigations Report 94-4012
Ground-water capture zone boundaries for individual pumped wells in a confined aquffer were delineated by using groundwater models. Both analytical and numerical (semi-analytical) models that more accurately represent the $round-water-flow system were used. All models delineated 2-dimensional boundaries (capture zones) that represent the areal extent of groundwater contribution to a...
Application of a Geographic Information System for regridding a ground-water flow model of the Columbia Plateau Regional Aquifer System, Walla Walla River basin, Oregon-Washington
M.E. Darling, L.E. Hubbard
1994, Water-Resources Investigations Report 89-4179
Computerized Geographic Information Systems (GIS) have become viable and valuable tools for managing,analyzing, creating, and displaying data for three-dimensional finite-difference ground-water flow models. Three GIS applications demonstrated in this study are: (1) regridding of data arrays from an existing large-area, low resolution ground-water model to a smaller, high resolution grid;...
Estimated water withdrawals in Mississippi during 1990
Penny M. Johnson
1994, Fact Sheet 060-94
