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Page 2047, results 51151 - 51175

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Habitat Suitability Index Models: Great egret
Brian R. Chapman, Rebecca J. Howard
1984, FWS/OBS 82/10.78
The great egret, also called common egret or American egret, is a large white heron tn the order Ciconiiformes, family Ardeidae. Great egrets stand 94.0-104.1 cm (37-41 inches) tall and have a wing spread to 139.7 cm (55 inches) (Terres 1980). The species is associated with streams, ponds, lakes, mud...
Evaluation of the ground-water resources of coastal Georgia; preliminary report on the data available as of July 1983
Richard E. Krause, Sharon E. Matthews, Harold E. Gill
1984, Open-File Report 84-228
A compilation of ground-water data that have been collected for nearly 100 years in the coastal area of Georgia as part of cooperative activities between the U.S. Geological Survey and other agencies is presented in this report. The compilation of pertinent data indicates that information is available for use in...
Geohydrology of the northern part of the town of Brookhaven, Suffolk County, New York
E. J. Koszalka
1984, Water-Resources Investigations Report 83-4042
In general, ground water in the area is of suitable quality for drinking and most other uses. Some constituents, however, particularly iron, chloride, and nitrogen, occur locally in unacceptable concentrations. Average hydraulic conductivity ranges from 100 to 300 feet per day (ft/d) in the upper glacial aquifer and from 50...
Evaluation of the potential for artificial ground-water recharge in eastern San Joaquin County, California — Phase 2
R. L. Ireland
1984, Water-Resources Investigations Report 83-4207
In response to the increasing demand on water supplies and declining water levels in eastern San Joaquin County, the U.S. Geological Survey, in cooperation with the San Joaquin County Flood Control and Water Conservation District, is evaluating the potential for artificially recharging the aquifer system in eastern San Joaquin County,...
Water use in Ohio, 1980
Michael Eberle, J.A. McClure
1984, Water-Resources Investigations Report 84-4024
An estimated 13,389 million gallons of water per day were used in Ohio in 1980, in four major categories of water use. Of this total, 12,645 Mgal/d (million gallons per day) were taken from surface-water sources whereas 744 Mgal/d was ground water. Totals for each category (in Mgal/d) were: thermoelectric...
Hydrogeology of well-field areas near Tampa, Florida, phase 2 — Development and documentation of a quasi-three-dimensional finite-difference model for simulation of steady-state ground-water flow
C. B. Hutchinson
1984, Water-Resources Investigations Report 84-4002
This report describes a quasi-three-dimensional finite-difference model for simulation of steady-state ground-water flow in the Floridan aquifer over a 932-square-mile area that contains 10 municipal well fields. The over-lying surficial aquifer contains a water table and is coupled to the Floridan aquifer by leakage term that represents flow through a...
Hydrogeology of the Verna well-field area and management alternatives for improving yield and quality of water, Sarasota County, Florida
C. B. Hutchinson
1984, Water-Resources Investigations Report 84-4006
About 8 million gallons of water are pumped daily from the 3-square-mile Verna well field to supply the city of Sarasota. Pumping has resulted in water-level declines and changes in water quality. Drawdowns of at least 30 feet have occurred in the producing zone at the well-field boundaries. Sulfate concentrations...
An overview of ground-water quality data in Wisconsin
Phil A. Kammerer Jr.
1984, Water-Resources Investigations Report 83-4239
This report contains a summary of ground-water-quality data for Wisconsin and an evaluation of the adequacy of these data for assessing the impact of land disposal of wastes on ground-water quality. Chemical analyses used in data summaries were limited to those stored in the USGS computer system (WATSTORE). Information on...
Ground-water models as a management tool in Florida
C. B. Hutchinson
1984, Water-Resources Investigations Report 84-4016
Highly sophisticated computer models provide powerful tools for analyzing historic data and for simulating future water levels, water movement, and water chemistry under stressed conditions throughout the ground-water system in Florida. Models that simulate the movement of heat and subsidence of land in response to aquifer pumping also have potential...
Enhanced job control language procedures for the SIMSYS2D two-dimensional water-quality simulation system
G.A. Karavitis
1984, Water-Resources Investigations Report 84-4052
The SIMSYS2D two-dimensional water-quality simulation system is a large-scale digital modeling software system used to simulate flow and transport of solutes in freshwater and estuarine environments. Due to the size, processing requirements, and complexity of the system, there is a need to easily move the system and its associated files...
A statistical approach to evaluate the relation of coal mining, land reclamation, and surface-water quality in Ohio
Janet Hren, K. S. Wilson, D.R. Helsel
1984, Water-Resources Investigations Report 84-4117
Base-flow data from 779 sites in Ohio 's coal region were analyzed statistically to relate land use to selected water-quality characteristics. Sites were classified into five categories: unmined (100 percent unmined land), abandoned (50 percent or more abandoned surface mines), reclaimed (50 percent or more reclaimed surface mines), deep-mined (50...
True location and orientation of fractures logged with the acoustic televiewer (including programs to correct fracture orientation)
R.A. Kierstein
1984, Water-Resources Investigations Report 83-4275
The attitude of fractures measured on acoustic-televiewer logs may be misorientated by as much as 180 degrees in a drill hole that is deviated significantly from vertical, because of the effect of the vertical component of the magnetic field on the tilted magnetometer that is used to orient the log....
Determination of reaeration coefficients for Ohio streams
Janet Hren
1984, Water-Resources Investigations Report 84-4139
The hydrocarbon-gas tracer technique was used to determine reaeration coefficients on 30 reaches of Ohio streams. The studies were done from September 1979 through August 1982 to determine the reaeration coefficients for the individual reaches and to develop general equation that could be used to estimate the coefficients. Multiple linear...
Effects of urbanization on three ponds in Middleton, Wisconsin
Leo B. House
1984, Water-Resources Investigations Report 84-4051
A digital hydrologic model was used to simulate the effects of future residential development on pond inflow volumes and resulting water levels of three ponds in Middleton, Wisconsin. The model computed the daily water budget and the resulting water level for each pond. The results of the model calibration are...
Geohydrologic reconnaissance of drainage wells in Florida
J. O. Kimrey, L.D. Fayard
1984, Water-Resources Investigations Report 84-4021
Drainage wells are used to inject surface waters directly into an aquifer, or shallow ground waters directly into a deeper aquifer, primarily by gravity. Such wells in Florida may be grouped into two broad types: (1) surface-water injection wells, and (2) interaquifer connector wells. Drainage wells of the first type...
Reconnaissance of water-quality characteristics of streams in the City of Charlotte and Mecklenburg County, North Carolina
W.H. Eddins, J. K. Crawford
1984, Water-Resources Investigations Report 84-4308
In 1979-81, water samples were collected from 119 sites on streams throughout the City of Charlotte and Mecklenburg County, North Carolina, and were analyzed for specific conductance, dissolved chloride, hardness, pH, total alkalinity, total phosphorus, trace elements, arsenic, cadmium, chromium, copper, iron, lead, manganese, mercury, silver, and zinc and biological...