Ground-water quality near the northwest 58th Street solid-waste disposal facility, Dade County, Florida
H. C. Mattraw Jr., John E. Hull, Howard Klein
1978, Water-Resources Investigations Report 78-45
The Northwest 58th Street solid-waste disposal facility, 3 miles west of a major Dade County municipal water-supply well field, overlays the Biscayne aquifer, a permeable, solution-riddled limestone which transmits leachates eastward at a calculated rate of 2.9 feet per day. A discrete, identifiable leachate plume has been recognized under and...
Flow characteristics of streams in Tutuila, American Samoa
Iwao Matsuoka
1978, Water-Resources Investigations Report 78-103
The island of Tutuila is the economic and population center of American Samoa. It lies in the tropics and rainfall is abundant. Annual rainfall at upper Faga'alu reservoir averaged 207 inches during the period 1904-75. Available records show that altitude is a significant factor affecting the amount of rainfall. Small,...
A preliminary appraisal of the impact of agriculture on ground-water availability in southwest Georgia
L.D. Pollard, R.G. Grantham, H.E. Blanchard Jr.
1978, Water-Resources Investigations Report 79-7
Irrigated acreage in the study area in southwest Georgia increased from 130,000 acres in 1976 to 261,000 in 1977. Acreage irrigated entirely by ground water increased 85 percent for the same period. The largest quantity of ground water used for irrigation was in the Dougherty Plain district, where 92 percent...
Predicted water-level and water-quality effects of artificial recharge in the Upper Coachella Valley, California, using a finite-element digital model
Lindsay A. Swain
1978, Water-Resources Investigations Report 77-29
From 1936 to 1974, water levels declined more than 100 feet in the Palm Springs area and 60 feet in the Palm Desert area of the upper Coachella Valley, Calif. Water from the Colorado River Aqueduct is presently being recharged to the basin. The dissolved-solids concentration of native ground water...
Technique for estimating magnitude and frequency of floods in Virginia
Earley M. Miller
1978, Water-Resources Investigations Report 78-5
A technique is presented for estimating the magnitude and frequency of floods in Virginia. For 299 gaged sites, the magnitudes of floods having recurrence intervals of 2 to 100 years are provided in tables. For ungaged sites, regression relations are presented that allow the estimation of flood magnitudes based on...
Water resources of northeast North Carolina
Hugh B. Wilder, Tully M. Robison, K.L. Lindskov
1978, Water-Resources Investigations Report 77-81
Several water-related problems are associated with economic development of northeast North Carolina. The solution to these problems depends in part on adequate knowledge of the hydrology of this 8,930 square mile coastal area. Average annual precipitation on the area is about 50 inches. Of this amount, about 34 inches returns...
Comparison of the radioactive and modified techniques for measurement of stream reaeration coefficients
R. E. Rathbun, R. Stephen Grant
1978, Water-Resources Investigations Report 78-68
The radioactive and modified tracer techniques were used to measure the reaeration coefficients of two reaches each of Black Earth Creek and the Madison Effluent Channel near Madison, Wis. Comparison of the results showed that coefficients measured with the modified technique ranged from -8.96 to +3.61 and from +15.7 to...
Water-table map of Walworth County, Wisconsin
Marvin G. Sherrill, John R. Erickson
1978, Water-Resources Investigations Report 79-42
A map of the water table in Walworth County in southeastern Wisconsin was prepared using water levels from nearly 600 wells. The work was done as a cooperative project between the U.S. Geological Survey, the University of Wisconsin-Extension, Geological and Natural History Survey, and the Southeastern Wisconsin Regional Planning Commission....
Water-table map of Racine County, Wisconsin
M.G. Sherrill, J.J. Schiller
1978, Water-Resources Investigations Report 79-41
A map (scale 1:100,000) of the water table in Racine County in southeastern Wisconsin was prepared using water levels from more than 250 wells. The work was done as a cooperative project between the U.S. Geological Survey and the Southeastern Wisconsin Regional Planning Commission. The map shows the altitude of...
Water-table map of Milwaukee County, Wisconsin
Marvin G. Sherrill, J.J. Schiller, John R. Erickson
1978, Water-Resources Investigations Report 79-40
A map (scale 1:100,000) of the water table in Milwaukee County in southeastern Wisconsin was prepared using water levels from more than 135 wells. The work was done as a cooperative project between the U.S. Geological Survey and the Southeastern Wisconsin Regional Planning Commission. The map shows the altitude of...
Nitrification in four acidic streams in southern New Jersey
James C. Schornick Jr., Neil M. Ram
1978, Water-Resources Investigations Report 77-121
Four characteristically acidic streams in southern New Jersey were investigated to determine the effect of secondary effluent on nitrification in the receiving waters. Chemical and microbiological data were obtained at four sites on each stream. From these data seven factors were evaluated to determine the proclivity of each stream to...
Map showing low-flow frequency of Minnesota streams
S. A. Warne
1978, Water-Resources Investigations Report 78-132
No abstract available....
Sediment transport in the Feather River, Lake Oroville to Yuba City, California
George Porterfield, Robert D. Busch, Arvi O. Waananen
1978, Water-Resources Investigations Report 78-20
Regulation of the Feather River by Oroville Dam and reservoir in northeast California (beginning in 1967) changed the streamflow and sediment discharge downstream from the dam. Changes in channel geometry to adjust to the new regimen were still in process in 1975. Streamflow and sediment concentration and discharge had decreased....
Determination of acetone and methyl ethyl ketone in water
D. Y. Tai
1978, Water-Resources Investigations Report 78-123
Analytical procedures for the determination of acetone and methyl ethyl ketone in water samples were developed. Concentrations in the milligram-per-liter range were determined by injecting an aqueous sample into the analysis system through an injection port, trapping the organics on Tenax-GC at room temperature, and thermally desorbing the organics into...
Public water supplies of North Carolina: A summary of water sources, use, treatment, and capacity of water-supply systems
L.T. Mann Jr.
1978, Water-Resources Investigations Report 78-16
A study of the public water-supply systems in North Carolina with 500 or more customers provides information needed to aid the planning, development, and utilization of the public water supplies of the State. Water use, sources of water, water quality, water treatment and capacity of 224 public-water-supply systems were investigated...
Digital model of ground-water flow in the Piceance Basin, Rio Blanco and Garfield Counties, Colorado
John B. Weeks
1978, Water-Resources Investigations Report 78-46
The digital model used to simulate ground-water flow in the aquifer system in the basin drained by Piceance and Yellow Creeks in northwestern Colorado is described in detail. The model is quasi three-dimensional in that it simulates ground-water flow in a multiaquifer system by assuming horizontal flow in the aquifers...
Water quality in the Sugar Creek basin, Bloomington and Normal, Illinois
Byron J. Prugh Jr.
1978, Water-Resources Investigations Report 78-78
Sugar Creek, within the twin cities of Bloomington and Normal, Illinois, has differences in water quantity and quality as a result of urban runoff and overflows from combined sewers.Water-quality data from five primary and eight secondary locations showed three basic types of responses to climatic and hydrologic stresses. Stream temperatures...
Dissolved-solids budget of Lake Okeechobee, Florida, October 1964 to September 1974
David V. Maddy
1978, Water-Resources Investigations Report 77-97
Lake Okeechobee is a major surface-water storage facility for south Florida. A dissolved-solids budget for Lake Okeechobee was computed for Oct. 1964 to Sept. 1974, a 10-year budget period. Calculations were based on records of daily discharge, daily specific conductance measurements, and regression equations relating dissolved-solids concentrations and specific conductance....
Model evaluation of the hydrogeology of the Cypress Creek well field in west-central Florida
Paul D. Ryder
1978, Water-Resources Investigations Report 78-79
The Cypress Creek well field is being developed to help supply a rapidly growing population in west-central Florida. The ground-water system in the Cypress Creek well-field area consists of a surficial sand aquifer, a semiconfining clay layer ranging from 2 to 25 feet in thickness, and a sequence of carbonate...
Ground-water resources of the Marine Corps Base, Twentynine Palms, San Bernardino County, California
Donald H. Schaefer
1978, Water-Resources Investigations Report 77-37
The Marine Corps Base, Twentynine Palms, Calif., pumped 2,600 acre-feet of water in 1975 from five supply wells in the Surprise Spring subbasin. The water levels in those wells declined an average of 35 feet in the preceding 10 years. This decline is a result of (1) the proximity of...
Interpretation of well logs in a carbonate aquifer
L.M. MacCary
1978, Water-Resources Investigations Report 78-88
This report describes the log analysis of the Randolph and Sabial core holes in the Edwards aquifer in Texas, with particular attention to the principles that can be applied generally to any carbonate system. The geologic and hydrologic data were obtained during the drilling of the two holes, from extensive...
Limnology of Laguna Tortuguero, Puerto Rico
Ferdinand Quinones-Marquez, Luis A. Fuste
1978, Water-Resources Investigations Report 77-122
The principal chemical, physical and biological characteristics, and the hydrology of Laguna Tortuguero, Puerto Rico, were studied from 1974-75. The lagoon, with an area of 2.24 square kilometers and a volume of about 2.68 million cubic meters, contains about 5 percent of seawater. Drainage through a canal on the north...
Guidelines for the use of structural versus regression analysis in geomorphic studies
W. R. Osterkamp, Jesse M. McNellis, Paul Robert Jordan
1978, Water-Resources Investigations Report 78-135
Simple-regression and structural analysis are similar methods of developing a linear relation from a bivariant group of data. Regression analysis is a useful curve-fitting technique, but often is misapplied to geomorphic data sets. When error components can be identified for both variables, the statistical technique of structural analysis is preferred....
Physiography and surficial geology of the copper-nickel study region, northeastern Minnesota
P. G. Olcott, D. I. Siegel
1978, Water-Resources Investigations Report 78-51
The Copper-Nickel study region lies in the Superior Upland physiographic province and is located approximately 60 miles north of Duluth and 100 miles southeast of International Falls, Minnesota. It straddles the Laurentian Divide, which separates Hudson Bay and Lake Superior drainage. The topography exhibits a southwesterly trending lineation that parallels...
Hydrogeologic factors affecting the availability and quality of ground water in the Temple Terrace area, Hillsborough County, Florida
Joseph William Stewart, Carole L. Goetz, L. R. Mills
1978, Water-Resources Investigations Report 78-4
Ground water occurs in two aquifers in the Temple Terrace area of Hillsborough County, Fla. The lower one is the artesian Floridan aquifer; the upper is the water-table aquifer. The Floridan aquifer is a thick sequence of limestone and dolomite layers which include several permeable zones that generally are treated...
