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Page 1511, results 37751 - 37775

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Determination of benthic-invertebrate indices and water-quality trends of selected streams in Chester County, Pennsylvania, 1969-80
C.R. Moore
1987, Water-Resources Investigations Report 85-4177
The trends of biological and chemical data collected for 12 years (1969-80) from 46 sites in Chester County were evaluated by using the sea- sonal Kendall test. Brillouin's diversity index was calculated and plotted against time for each site. The diversity index at 7 sites had upward trends significant at...
Ground-water-withdrawal and water-level data used to simulate regional flow in the major coastal plain aquifers of New Jersey
O. S. Zapecza, L. M. Voronin, Mary Martin
1987, Water-Resources Investigations Report 87-4038
The report documents groundwater withdrawal and level data for the major aquifers of the New Jersey Coastal Plain. These data have been used in the Regional Aquifer System Analysis flow model of 10 major aquifers in the New Jersey Coastal Plain. Groundwater withdrawal data from more than 1,400 wells are...
Technique for estimating flood-peak discharges and frequencies on rural streams in Illinois
G.W. Curtis
1987, Water-Resources Investigations Report 87-4207
Flood-peak discharges and frequencies are presented for 394 gaged sites in Illinois, Indiana, and Wisconsin for recurrence intervals ranging from 2 to 100 years. A technique is presented for estimating flood-peak discharges at recurrence intervals ranging from 2 to 500 years for nonregulated streams in Illinois with drainage areas ranging...
Evaluation of the potential for artificial ground-water recharge in eastern San Joaquin County, California — Phase 3
S. N. Hamlin
1987, Water-Resources Investigations Report 87-4164
Infiltration tests were used to evaluate the potential of basin spreading surface water as a means of artificially recharging the aquifer system in eastern San Joaquin County, California. Two infiltration sites near Lockeford and Linden were selected on the basis of information collected during the first two phases of the...
Flooding and sedimentation in Wheeling Creek basin, Belmont County, Ohio
J.R. Kolva, G. F. Koltun
1987, Water-Resources Investigations Report 87-4053
The Wheeling Creek basin, which is located primarily in Belmont County, Ohio, experienced three damaging floods and four less severe floods during the 29-month period from February 1979 through June 1981. Residents of the basin became concerned about factors that could have affected the severity and frequency of out-of-bank floods....
Multiple-regression equations for estimating low flows at ungaged stream sites in Ohio
G. F. Koltun, R.R. Schwartz
1987, Water-Resources Investigations Report 86-4354
This report presents multiple-regression equations for estimating selected low-flow characteristics for most unregulated Ohio streams at sites where little or no discharge data are available. The equations relate combinations of drainage area, main-channel length, main-channel slope, average basin elevation, forested area, average annual precipitation, and an index of infiltration to...
Ground-water flow in the Navajo sandstone in parts of Emery, Grand, Carbon, Wayne, Garfield, and Kane counties, southeast Utah
Emanuel Weiss
1987, Water-Resources Investigations Report 86-4012
A finite-difference model of one layer was constructed to determine groundwater flow directions and magnitudes in the Navajo Sandstone of southeast Utah. Hydraulic head data, hydraulic conductivity data, precipitation data, and other data collected in the area were used in constructing and calibrating the model. Sensitivity of the model to...
Selected hydrologic and physical properties of Mesozoic formations in the Upper Colorado River Basin in Arizona, Colorado, Utah, and Wyoming: Excluding the San Juan Basin
J. F. Weigel
1987, Water-Resources Investigations Report 86-4170
Data for hydrologic and physical properties of Mesozoic formations in the Upper Colorado River Basin, excluding the San Juan Basin, have been collected by government agencies, private industry, property owners, and other sources. These data were compiled and analyzed so that they would be available for use by hydrologists, earth...
Ground-water flow and quality near Canon City, Colorado
G. A. Hearne, D. W. Litke
1987, Water-Resources Investigations Report 87-4014
Water in aquifers that underlie the Lincoln Park area near Canon City, Colorado, contains measurable concentrations of chemical constituents that are similar to those in raffinate (liquid waste) produced by a nearby uranium ore processing mill. The objective of this study was to expand the existing geohydrologic data base by...
Hydrogeology of McMullen Valley, west-central Arizona
D. R. Pool
1987, Water-Resources Investigations Report 87-4140
The geohydrology of McMullen Valley, west-central Arizona, was investigated using geologic, geophysical, and hydrologic data and a numerical model of the groundwater system. Interpretation of geologic and geophysical information indicates that the main structure of McMullen Valley is a syncline that has been normal faulted on the southeast side. Basin...
Geophysical well log analysis of fractured granitic rocks at Atikokan, Ontario, Canada
Frederick L. Paillet, A.E. Hess
1987, Water-Resources Investigations Report 87-4154
Two boreholes, drilled to approximate depths of 750 and 1,260 m in a granitic intrusion located near Atikokan, Ontario, were studied by obtaining a full suite of conventional borehole geophysical logs. In addition, selected intervals in these boreholes were logged with a borehole acoustic televiewer that produces a high-resolution image...
Traveltime and dispersion in the Illinois River, Marseilles to Peoria, Illinois
E.E. Zuehls
1987, Water-Resources Investigations Report 87-4106
Traveltime in 89.3 mi of the Illinois River between Marseilles Dam and Peoria Dam was measured using rhodamine-WT dye. On each of four subreaches, dye-tracer measurements were made at approximately 50- and 85% flow duration in 1978, 1979, and 1985. The dye-tracer data were used to develop a method for...
Evapotranspiration rates at selected sites in the Powder River basin, Wyoming and Montana
L. W. Lenfest
1987, Water-Resources Investigations Report 82-4105
Twelve sites were chosen for a study of evapotranspiration in the Powder River basin based on variations in topography and plant communities, geographic location, and the availability of groundwater data at the sites. Evapotranspiration rates were estimated from groundwater, meteorological, and vegetation data using the Blaney-Criddle method. Five of the...
Calibration of a dissolved-solids model for the Yampa River basin between Steamboat Springs and Maybell, northwestern Colorado
R. S. Parker, D. W. Litke
1987, Water-Resources Investigations Report 86-4190
The cumulative effects of changes in dissolved solids from a number of coal mines are needed to evaluate effects on downstream water use. A model for determining cumulative effects of streamflow, dissolved-solids concentration, and dissolved-solids load was calibrated for the Yampa River and its tributaries in northwestern Colorado. The model...
Pesticide data for selected Wyoming streams, 1976-78
David L. Butler
1987, Water-Resources Investigations Report 83-4127
In 1976, the U.S. Geological Survey, in cooperation with the Wyoming Department of Agriculture, started a monitoring program to determine pesticide concentrations in Wyoming streams. This program was incorporated into the water-quality data-collection system already in operation. Samples were collected at 20 sites for analysis of various insecticides, herbicides, polychlorinated...
Adequacy of NASQAN data to describe areal and temporal variability of water quality of the San Juan River drainage basin upstream from Shiprock, New Mexico
C. L. Goetz, Cynthia G. Abeyta
1987, Water-Resources Investigations Report 85-4043
Analyses indicate that water quality in the San Juan River drainage basin upstream from Shiprock, New Mexico, is quite variable from station to station. Analyses are based on water quality data from the U.S. Geological Survey WATSTORE files and the New Mexico Environmental Improvement Division 's files. In the northeastern...
Hydrology and water-quality at the Weldon Spring radioactive waste-disposal sites, St. Charles County, Missouri
M. J. Kleeschulte, L. F. Emmett
1987, Water-Resources Investigations Report 87-4169
Water samples from five monitoring wells adjacent to raffinate pits storing low-level radioactive waste contained concentrations of nitrate as nitrogen ranging from 53 to 990 milligrams per liter. Most samples also had maximum concentrations of calcium (900 milligrams per liter), sodium (340 milligrams per liter), sulfate (320 milligrams per liter),...
Selected chemical analyses of water from formations of Mesozoic and Paleozoic age in parts of Oklahoma, northern Texas, and Union County, New Mexico
R.S. Parkhurst, S. C. Christenson
1987, Water-Resources Investigations Report 86-4355
Hydrochemical data were compiled into a data base as part of the Central Midwest Regional Aquifer System Analysis project. The data consist of chemical analyses of water samples collected from wells that are completed in formations of Mesozoic and Paleozoic age. The data base includes data from the National Water...
Geohydrology and susceptibility of Coldwater Spring and Jacksonville fault areas to surface contamination in Calhoun County, Alabama
J. C. Scott, W. F. Harris, R.H. Cobb
1987, Water-Resources Investigations Report 87-4031
Coldwater Spring in eastern Calhoun County, Alabama, is one of the largest springs in Alabama. The spring, which has an average discharge of about 31 million gallons per day, supplies water for about 70,000 people in the Anniston, Alabama area. A potentiometric map of the study area indicates that the...
Assessment of water quality and factors affecting dissolved oxygen in the Sangamon River, Decatur to Riverton, Illinois, summer 1982
A.R. Schmidt, J. K. Stamer
1987, Water-Resources Investigations Report 87-4024
Water quality and processes that affect the dissolved-oxygen concentration in a 45.9 mile reach of the Sangamon River from Decatur to Riverton, Illinois, were determined from data collected during low-flow periods in the summer of 1982. Relations among dissolved oxygen, water discharge, biochemical oxygen demand, ammonia and nitrite plus nitrate...
Water-quality assessment of Peruque Creek, St Charles County, Missouri, July 1983 and July 1984
W.R. Berkas
1987, Water-Resources Investigations Report 87-4079
Physical, chemical, and biological data collected along the downstream 24.1-river-mi reach of Peruque Creek, Missouri, on July 18-19, 1983 and July 9-10, 1984, were used to characterize the water quality conditions in the creek. Wastewater discharges into the creek at the Lake St. Louis sewage-disposal ponds and at the O'Fallon...
Trace-metal leaching from plumbing materials exposed to acidic ground water in three areas of the coastal plain of New Jersey
G. R. Kish, J. A. Macy, R.T. Mueller
1987, Water-Resources Investigations Report 87-4146
The U.S. Geological Survey analyzed trace metal concentrations in tap water from domestic wells in newly constructed homes in Berkeley Township, Ocean County and Galloway Township, Atlantic County, N. J. The potable water distribution systems in all of the homes sampled are constructed primarily of copper with lead-based solder points....
Magnitude and frequency of floods in Arkansas
B.L. Neely
1987, Water-Resources Investigations Report 86-4335
The magnitude and frequency of peak discharges on streams in Arkansas, were estimated through the use of comprehensive regression analyses, in which physical characteristics of streams were related to flood characteristics at gaging stations. Equations derived from the regression analyses provide estimates of peak discharges with selected recurrence intervals from...
Floods in Kansas and techniques for estimating their magnitude and frequency on unregulated streams
R.W. Clement
1987, Water-Resources Investigations Report 87-4008
Techniques are presented for generalizing the skewness coefficient of log-Pearson Type III distributions of annual maximum discharges and for flood magnitudes that have selected recurrence intervals from 2 to 100 yr. A weighted least-square (WLS) regression model was used to generalize the coefficients of station skewness that resulted in a...
HST3D; a computer code for simulation of heat and solute transport in three-dimensional ground-water flow systems
K.L. Kipp
1987, Water-Resources Investigations Report 86-4095
The Heat- and Soil-Transport Program (HST3D) simulates groundwater flow and associated heat and solute transport in three dimensions. The three governing equations are coupled through the interstitial pore velocity, the dependence of the fluid density on pressure, temperature, the solute-mass fraction , and the dependence of the fluid viscosity on...