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Development of a Digital Model of Ground-Water Flow in Deeply Weathered Crystalline Rock, Chester County, Pennsylvania

Description: The model discussed in this report simulates recharge to, flow through, and discharge from the water-table aquifer representative of most of Chester County, Pennsylvania. It includes maps and graphs.
Date: August 1980
Creator: McGreevy, Laurence J. & Sloto, Ronald A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Distribution and Trend of Nitrate, Chloride, and Total Solids in Water in the Magothy Aquifer in Southeast Nassau County, New York, from the 1950's Through 1973

Description: Abstract: Concentrations of nitrate, chloride, and total sol ids in water in the Magothy aquifer, southeast Nassau County, N.Y., show a steadily increasing trend from the early 1950's to 1973. Vertical distribution of nitrate, chloride, and total-solids concentrations as shown in sections of the study area indicate downward movement of these constituents. Maximum concentrations are in a zone underlying the areas of Westbury, Hicksvil.le, and Plainview. Nitrate (as nitrogen) concentration increa… more
Date: August 1976
Creator: Ku, Henry F. H. & Sulam, Dennis J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of Surface Coal Mining on the Hydrology of Crooked and Turkey Creek Basins, Jefferson County, Alabama

Description: From introduction: The objective of this project is to measure the impact coal mining has on the hydrologic system and to develop the capability for predicting the effect of future mining on water resources. To achieve this necessities isolating the problems and measuring the parameters involved before, during, and after mining.
Date: August 1979
Creator: Puente, Celso
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effects of a Floodwater-Retarding Structure on the Hydrology and Ecology of Trout Creek in Southwestern Wisconsin

Description: Abstract: The primary effect of a floodwater-retarding structure (FRS) on the flow of Trout Creek, Wisconsin, is attenuation of flood peaks. Reduction of flood peaks ranged from 58 to 91 percent during the study period, 1975 to 1979. An inverse relationship exists between sediment concentration and outflow from the FRS during floods. Most sediment stored in the flood pool during floods is released from the reservoir during subsequent reduced discharge. Sediment-trapping efficiency of the FRS wa… more
Date: August 1982
Creator: Wentz, Dennis A. & Graczyk, David J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Empirical Data on Longitudinal Dispersion

Description: From introduction: The purpose of this report is to assemble empirical data on longitudinal dispersion for a variety of natural channels as a first step in the critical examination of current models used to describe longitudinal dispersion.
Date: August 1974
Creator: Nordin, Carl F., Jr. & Sabol, George V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of the San Dieguito, San Elijo, and San Pasqual Hydrologic Subareas for Reclaimed Water Use, San Diego County, California

Description: From purpose and scope: The purpose of this study was to update hydrologic data and refine understanding of the hydrologic system within the San Dieguito, San Elijo, and San Pasqual hydrologic subareas in San Diego County, Calif., and to evaluate the suitability of these areas for reclaimed water use.
Date: August 1983
Creator: Izbicki, John A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An Evaluation of Water-Quality Data Obtained at Four Streamflow Daily-Record Stations in Idaho

Description: From introduction: This study is limited to four U.S. Geological Survey stream-flow stations located in Idaho (figure 1). The 6 to 22 years of stations were assembled and evaluated through use of computer techniques for data plotting and regression analysis developed by Steele (1972). Objectives of this evaluation were were (1) to show which parameters were highly correlative with the levels of specific conductance and(or) discharge and (2) to see if any changes in overall chemical character of… more
Date: August 1973
Creator: Dyer, Kenneth L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Facility Designed to Monitor the Unsaturated Zone During Infiltration of Tertiary-Treated Sewage, Long Island, New York

Description: Abstract: A facility consisting of a circular recharge basin 6.10 meters in diameter with a central observation manhole was developed on Long Island to study the role of the unsaturated zone during aquifer recharge with tertiary-treated sewage. The manhole extends through most of the 7.5-meter-thick unsaturated zone, which is composed of glacial outwash sand and gravel, and enables collection of water samples and monitoring of dynamic characteristics of the unsaturated zone during recharge exp… more
Date: August 1979
Creator: Prill, Robert C.; Oaksford, Edward T. & Potorti, James E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Geohydrology and Digital-Simulation Model of the Farrington Aquifer in the Northern Coastal Plain of New Jersey

Description: From introduction: The purpose of this study is to simulate the hydrology of the Farrington aquifer using a computer-simulation model so that the effects of alternative withdrawal schemes can be evaluated quantitatively. The primary study area consists of the northern part of the New jersey Coastal Plain...This report discusses the geohydrology of the Farrington aquifer, the simulation model, and the effects of projected withdrawals from the Farrington aquifer.
Date: August 1979
Creator: Farlekas, George M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ground-Water Hydrology of the Lower Milliken-Sarco-Tulucay Creeks Area, Napa County, California

Description: From purpose and scope: The purpose of this report, prepared by the U.S. Geological Survey in cooperation with the Napa County Flood Control and Water Conservation District, is to provide local planners with sufficient data to permit them to manage effectively the local ground-water resources for long-term use.
Date: August 1977
Creator: Johnson, Michael J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrologic Characteristics of Surface-Mined Land Reclaimed by Sludge Irrigation, Fulton County, Illinois

Description: From introduction: This report contains a general description of the hydrology of the project site, summaries of the data collected during 1971 to 1978, and discusses some of the factors affecting the hydrology of the site. This information and the water-level contour map (Fuentes and Patterson, 1979) will be helpful in designing an effective ground-water monitoring program and will provide baseline hydrologic information from which future changes can be detected.
Date: August 1982
Creator: Patterson, G. L.; Fuentes, R. F. & Toler, L. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Hydrologic Relations Between Lakes and Aquifers in a Recharge Area near Orlando, Florida

Description: Abstract: The three lakes investigated gain water- from adjoining water-table aquifer and lose water to Floridan aquifer by downward leakage. Net seepage (net exchange of water between lake and aquifers) can be estimated by equation S = AX + BY, where S is net seepage, X represents hydraulic gradient between lake and water-table aquifer, A is lumped parameter representing effect of hydaulic conductivity and cross-sectional area of materials in flow section of water-table aquifer, Y is head diff… more
Date: August 1976
Creator: Lichtler, W. F.; Hughes, G. H. & Pfischner, F. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrology and Water Quality in the Nederlo Creek Basin, Wisconsin, Before Construction of Two Water-Retention Structures

Description: From introduction: This study was begun in 1967 in cooperation with the Wisconsin Department of natural Resources (DNR)--its purpose was to evaluate the effects of construction of a reservoir and a floodwater-retention structure on the hydrologic system and water quality in a small basin in southwestern Wisconsin. In 1968, Federal research funds were obtained to provide for more detailed study of water quality and to extend the scope of the study to include aquatic biota.
Date: August 1979
Creator: Kammerer, P. A., Jr. & Sherrill, M. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrology of Malheur Lake, Harney County, Southeastern Oregon

Description: Abstract: The various components of inflow and outflow to and from the lake and their relative magnitudes were identified. In 1972 water year the total inflow to the lake was 200,000 acre-feet, but it was only 75,000 acre-feet in 1973 water year. In 1972 water year the Donner and Blitzen River contributed 55 percent of the inflow, with Silvies River, direct precipitation, and Sodhouse Spring contributing 28, 13, and 4 percent respectively. Om 1973 the Donner and Blitzen River contributed 61 per… more
Date: August 1975
Creator: Hubbard, Larry L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Limnological Survey of Sacony Creek Basin, Berks County, Pennsylvania

Description: Samples of water, fish, and benthic macroinvertebrates collected at 10 sampling stations over a 10-month period indicate that Sacony Creek and its major tributaries possess water of good to excellent quality. No excessive quantities of dissolved nutrients, oxidizable matter, or fecal coliform bacteria were detected. Fish inhabitants include a sizable wild trout population in the upper Sacony basin and a diverse warm-water population, dominated by white suckers (Catostomus commersoni), in the lo… more
Date: August 1976
Creator: Barker, James L. & Kulp, Kenneth P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Monthly Fluctuations in the Quality of Ground Water Near the Water Table in Nassau and Suffolk Counties, Long Island, New York

Description: This report presents the results of water sampling in two New York counties and concludes that the possibly cause of fluctuations of chloride, sulfate, and nitrate in the water are "precipitation, lawn fertilizer, dissolved salts from storm runoff, and effluent from septic tanks and cesspools." This report also includes a number of maps and graphs.
Date: August 1978
Creator: Katz, Brian G.; Ragone, Stephen E. & Linder, Juli B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Phreeqe--A Computer Program for Geochemical Calculations

Description: From abstract: This report "presents PHREEQE, a Fortran IV computer program designed to mode1 geochemical reactions and calculate pH, redox potential, and mass transfer as a function of reaction progress. "It contains tables and other figures.
Date: August 1990
Creator: Parkhurst, David L.; Thorstenson, Donald C. & Plummer, L. Niel
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Physical Environment and Hydrologic Characteristics of Coal-Mining Areas in Missouri

Description: From abstract: This report provides "hydrologic information for the north-central and western coal-mining regions of Missouri . . . to define the hydrologic system in these areas of major historic and planned coal development." It "describes the physical setting, climate, coal-mining practices, general hydrologic systems, and the current (1980) hydrologic data base in these two coal-mining regions."
Date: August 1980
Creator: Vaill, Jerry E. & Barks, James H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Potentiometric Map of the Memphis Sand in the Memphis Area, Tennessee, August 1978

Description: From explanation: This map is based on water level measurements made in wells screened in the Eocene Memphis Sand (formerly "500-foot sand"). Monthly low-water levels for the month of August, 1978 from USGS maintained recorder equipped wells and supplemental measurements made on August 22 and 23 of private and industrial wells were used as control. Water levels are commonly at their lowest for the year during late August of early September (Criner and Parks, 1976).
Date: August 1978
Creator: Graham, David D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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