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Page 4342, results 108526 - 108550

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Data on ground-water quality for the Winnemucca 1° x 2° quadrangle, central Nevada
Alan H. Welch, Rhea P. Williams
1987, Open-File Report 85-648-G
Water quality data for groundwater has been compiled for the Winnemucca 1 degree x 2 degree quadrangle which covers a portion of central Nevada. Chemical characteristics of the water are shown on a map (at a scale of 1:250,000) and on trilinear diagrams for the major ions. The data for...
Magnitude and frequency of floods in rural and urban basins of North Carolina
H.C. Gunter, R.R. Mason, T. C. Stamey
1987, Water-Resources Investigations Report 87-4096
The applicability of the nationwide urban flood relations in the Piedmont and Coastal Plain provinces is evaluated. Data for 254 gaging stations on rural streams with 10 or more years of record were used in multiple linear regression analyses with basin and climatic variables, to derive regional relations for estimating...
Water resources of Walworth County, South Dakota
Jack Kume, Lewis Howells
1987, Water-Resources Investigations Report 85-4015
The water resources of Walworth County, South Dakota are for the most part undeveloped. In 1978, only about 10,000 acre-feet of water was used for irrigation, stock, domestic, and public supplies; most of this water came form Lake Oahe on the Missouri River, and was used for irrigation. The lake...
Nonpoint-source agricultural chemicals in ground water in Nebraska; preliminary results for six areas of the High Plains Aquifer
Hsiu-Hsiung Chen, A.D. Druliner
1987, Water-Resources Investigations Report 86-4338
The reconnaissance phase of a study to determine the occurrence of agricultural chemicals from nonpoint sources in groundwater in six areas, which represented the major provinces of the High Plains aquifer in Nebraska is described. In 1984, water from 82 wells in the 6 study areas was analyzed for nitrate,...
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...
Discharge ratings for control gates at Mississippi River lock and dam 20, Canton, Missouri
A.J. Heinitz
1987, Water-Resources Investigations Report 87-4149
The water levels of the navigation pools on the Mississippi River are maintained by the operation of tainter and roller gates at the locks and dams. Discharge ratings for the gates on Lock and Dam 20, at Canton, Missouri, were developed from current meter discharge measurements made in the forebays...
Streamflow and water quality of the Grand Calumet River, Lake County, Indiana, and Cook County, Illinois, October 1984
Charles G. Crawford, David J. Wangsness
1987, Water-Resources Investigations Report 86-4208
A diel (24-hour) water-quality survey was done to investigate the sources of dry-weather waste inputs attributable to other than permitted point-source effluent and to evaluate the waste-load assimilative capacity of the Grand Calumet River, Lake County, Indiana, and Cook County, Illinois, in October 1984. Flow in the Grand Calumet River...
Geohydrology and water quality of the Inyan Kara, Minnelusa, and Madison aquifers of the northern Black Hills, South Dakota and Wyoming, and Bear Lodge Mountains, Wyoming
D.P. Kyllonen, K. D. Peter
1987, Water-Resources Investigations Report 86-4158
The Inyan Kara, Minnelusa, and Madison aquifers are the principal sources of ground water in the northern Black Hills, South Dakota and Wyoming, and Bear Lodge Mountains, Wyoming. The aquifers are exposed in the Bear Lodge Mountains and the Black Hills and are about 3,000 to 5,000 ft below the...
Water resources near Dillingham in the Bristol Bay Area, Alaska
R. L. Glass
1987, Water-Resources Investigations Report 87-4141
Dillingham, the largest community in the Bristol Bay area of Alaska, lies near the confluence of the Wood and Nushagak Rivers. Mean annual discharges for the Wood and Nushagak Rivers are 4,824 and 22,650 cu ft/sec. Flows generally are greatest in May through July and lowest in January through April....
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),...
Flood hazards along the Toutle and Cowlitz rivers, Washington, from a hypothetical failure of Castle Lake blockage
Antonius Laenen, L.L. Orzol
1987, Water-Resources Investigations Report 87-4055
A recent evaluation of groundwater and material in the blockage impounding Castle Lake shows that the blockage is potentially unstable against failure from piping due to heave and internal erosion when groundwater levels are seasonally high. There is also a remote possibility that a 6.8 or greater magnitude earthquake could...
Simulation of unsteady flow in the Milwaukee Harbor Estuary at Milwaukee, Wisconsin
L. B. House
1987, Water-Resources Investigations Report 86-4050
This report describes the application and results of an unsteady-flow model for the Milwaukee Harbor Estuary. The model simulates unsteady and upstream flow occurring in the estuary as a result of Lake Michigan Seiche. The discharge computed by the model indicates that upstream flow occurs throughout the estuary during periods...
Water resources of the Rio Grande de Añasco-lower valley, Puerto Rico
Jose Raul Diaz, Donald G. Jordan
1987, Water-Resources Investigations Report 85-4237
A large amount of water suitable for most uses is available in the lower Rio Grande de Anasco Valley, the major source of which is the Rio Grande de Anasco which contributes about 95% of the surface water inflow to the lower valley. River flow at El Espino exceeds 100...
Estimated use of ground water for irrigation in Wisconsin, 1984
J. T. Krohelski, B.R. Ellefson, C.A. Storlie
1987, Water-Resources Investigations Report 86-4079
The flow from a sample of 143 irrigation wells from 6 irrigation areas in Wisconsin was measured using an external flowmeter during the 1983-84 irrigation seasons. The measured pumpages were correlated with reported pumpages. The equation that describes this correlation is Q(sub)m = 0.86 x Q(sub)r where Q(sub)m is the...
Comparison of conceptually based and regression rainfall-runoff models, Denver Metropolitan area, Colorado, and potential applications in urban areas
J. B. Lindner-Lunsford, S. R. Ellis
1987, Water-Resources Investigations Report 87-4104
Multievent, conceptually based models and a single-event, multiple linear-regression model for estimating storm-runoff quantity and quality from urban areas were calibrated and verified for four small (57 to 167 acres) basins in the Denver metropolitan area, Colorado. The basins represented different land-use types - light commercial, single-family housing, and multi-family...
Effects of agricultural best-management practices on total phosphorus yields in the Johnson Brook and Lovejoy Pond watersheds, Kennebec County, Maine, 1980-84
Thomas J. Maloney, John W. Sowles
1987, Water-Resources Investigations Report 87-4118
Analysis of daily phosphorus yield and streamflow data collected before and after implementation of agricultural best management practices in the Johnson Brook watershed in south-central Maine indicated statistically significant reductions in phosphorus loading in all flow categories. Reduction of median loadings for five flow categories ranged from 26% to 90%....