Hydrogeology and simulated ground-water flow through the unconsolidated aquifers of northeastern St. Joseph County, Indiana
E. Randall Bayless, L. D. Arihood
1996, Water-Resources Investigations Report 95-4225
The U.S. Geological Survey investigated ground-water resources of northeastern St. Joseph County, Indiana, during 1990-93. The investigation included field measurements of water levels and numerical models of ground-water flow. This report documents results of that work and includes descriptions of (1) hydrogeologic framework, (2) water levels, (3) model sensitivity to...
Determination of the 100-year flood plain on Upper Three Runs and selected tributaries, and the Savannah River at the Savannah River site, South Carolina, 1995
T. H. Lanier
1996, Water-Resources Investigations Report 96-4014
The 100-year flood plain was determined for Upper Three Runs, its tributaries, and the part of the Savannah River that borders the Savannah River Site. The results are provided in tabular and graphical formats. The 100-year flood-plain maps and flood profiles provide water-resource managers of the Savannah River Site with...
Hydrogeology of the surficial and intermediate aquifer systems in Sarasota and adjacent counties, Florida
G. L. Barr
1996, Water-Resources Investigations Report 96-4063
From 1991 to 1995, the hydrogeology of the surficial aquifer system and the major permeable zones and confining units of the intermediate aquifer system in southwest Florida was studied. The study area is a 1,400-square-mile area that includes Sarasota County and parts of Manatee, De Soto, Charlotte, and Lee Counties....
Hydrogeologic setting, hydraulic properties, and ground-water flow at the O-Field area of Aberdeen Proving Ground, Maryland
William S.L. Banks, Barry S. Smith, Colleen A. Donnelly
1996, Water-Resources Investigations Report 95-4248
The U.S. Army disposed chemical agents, laboratory materials, and unexploded ordnance at O-Field in the Edgewood Area of Aberdeen Proving Ground, Maryland, from before World War II until at least the 1950's. Soil, ground water, surface water, and wetland sediments in the O-Field area were contaminated from the disposal activity....
Ground-water levels in intermontane basins of the northern Rocky Mountains, Montana and Idaho
David W. Briar, S.M. Lawlor, M.A. Stone, D. J. Parliman, J.L. Schaefer, Eloise Kendy
1996, Hydrologic Atlas 738-B
The Regional Aquifer-System Analysis (RASA) program is a series of studies by the U.S. Geological Survey (USGS) to analyze regional ground-water systems that compose a major portion of the Nation's water supply (Sun, 1986). The Northern Rocky Mountains Intermontane Basins is one of the study regions in this national program....
Prediction of traveltime and longitudinal dispersion in rivers and streams
Harvey E. Jobson
1996, Water-Resources Investigations Report 96-4013
The possibility of a contaminant being accidentally or intentionally spilled upstream from a water supply is a constant concern to those diverting and using water from streams and rivers. Although many excellent models are available to estimate traveltime and dispersion, none can be used with confidence before calibration and verification...
Tidal-flow, circulation, and flushing characteristics of Kings Bay, Citrus County, Florida
K.M. Hammett, C. R. Goodwin, G.L. Sanders
1996, Open-File Report 96-230
Kings Bay is an estuary on the gulf coast of peninsular Florida with a surface area of less than one square mile. It is a unique estuarine system with no significant inflowing rivers or streams. As much as 99 percent of the freshwater entering the bay originates from multiple spring...
Analysis of tests of subsurface injection, storage, and recovery of freshwater in the lower Floridan aquifer, Okeechobee County, Florida
Vicente Quinones-Aponte, Kevin Kotun, J. F. Whitley
1996, Open-File Report 95-765
A series of freshwater subsurface injection, storage, and recovery tests were conducted at an injection-well site near Lake Okeechobee in Okeechobee County, Florida, to assess the recoverability of injected canal water from the Lower Floridan aquifer. At the study site, the Lower Floridan aquifer is characterized as having four local,...
Results of a seepage investigation at Bear Creek Valley, Oak Ridge, Tennessee, January through September 1994
J. A. Robinson, G.C. Johnson
1996, Open-File Report 95-459
A seepage investigation was conducted of 4,600 acres of Bear Creek Valley southwest of the Y-12 Plant, Oak Ridge, Tennessee, for the period of January through September 1994. The data were collected to help the Y-12 Environmental Restoration Program develop a better understanding of ground-water and surface-water interactions, recharge and...
Postaudit of head and transmissivity estimates and ground-water flow models of Avra Valley, Arizona
R. T. Hanson
1996, Water-Resources Investigations Report 96-4045
Ground water from regional alluvial-aquifer systems is the main source of water in the alluvial basins of Arizona, such as Avra Valley. Ground-water flow models are used to assess ground-water availability and the effects of development on the regional ground-water resources. A postaudit of regional-head and transmissivity estimates and the...
Summary of the San Juan structural basin regional aquifer-system analysis, New Mexico, Colorado, Arizona, and Utah
G. W. Levings, J. M. Kernodle, C. R. Thorn
1996, Water-Resources Investigations Report 95-4188
Ground-water resources are the only source of water in most of the San Juan structural basin and are mainly used for municipal, industrial, domestic, and stock purposes. Industrial use increased dramatically during the late 1970's and early 1980's because of increased exploration and development of uranium and coal resources....
Hydrologic and chemical interaction of the Arkansas River and the Equus Beds aquifer between Hutchinson and Wichita, south-central Kansas
N. C. Myers, G.D. Hargadine, Joe B. Gillespie
1996, Water-Resources Investigations Report 95-4191
Large chloride concentrations in Arkansas River water have the potential to degrade water quality in the adjacent Equus beds aquifer between Hutchinson and Wichita, Kansas. The aquifer is an important source of water for municipal, industrial, agricultural, and domestic uses. A three-dimensional, finite-difference, ground-water flow-model program (MODFLOW) was used with...
Compilation and preliminary interpretations of hydrologic and water-quality data from the Railroad Industrial Area, Fairbanks, Alaska, 1993-94
M. R. Lilly, K. A. McCarthy, A.T. Kriegler, James Vohden, G.E. Burno
1996, Water-Resources Investigations Report 96-4049
Commercial and industrial activities in the Railroad Industrial Area in Fairbanks, Alaska, have resulted in accidental releases of chemicals to the subsurface. Such releases have generated concern regarding local ground-water quality and the potential impact on nearby water-supply wells. Consequently, a study is being conducted to characterize the environmental and...
Evaluation of agricultural best-management practices in the Conestoga River headwaters, Pennsylvania: Effects of nutrient management on water quality in the Little Conestoga Creek headwaters, 1983-89
E. H. Koerkle, D. K. Fishel, M. J. Brown, K. M. Kostelnik
1996, Water-Resources Investigations Report 95-4046
Water quality in the headwaters of the Little Conestoga Creek, Lancaster County, Pa., was investigated from April 1986 through September 1989 to determine possible effects of agricultural nutrient management on water quality. Nutrient management, an agricultural Best-Management Practice, was promoted in the 5.8-square-mile watershed by the U.S. Department of Agriculture...
Assessment of the hydrogeology and water quality in a near-shore well field, Sarasota, Florida
J. C. Broska, L. A. Knochenmus
1996, Water-Resources Investigations Report 96-4036
The city of Sarasota, Florida, operates a downtown well field that pumps mineralized water from ground water sources to supply a reverse osmosis plant. Because of the close proximity of the well field to Sarasota Bay and the high sulfate and chloride concentrations of ground-water supplies, a growing concern exists...
Surface-water hydrology and runoff simulations for three basins in Pierce County, Washington
M. C. Mastin
1996, Water-Resources Investigations Report 95-4068
The surface-water hydrology in Clear, Clarks, and Clover Creek Basins in central Pierce County, Washington, is described with a conceptual model of the runoff processes and then simulated with the Hydrological Simulation Program-FORTRAN (HSPF), a continuous, deterministic hydrologic model. The study area is currently undergoing a rapid conversion of rural,...
Estimation of evapotranspiration in the Rainbow Springs and Silver Springs basins in North-Central Florida
Leel Knowles Jr.
1996, Water-Resources Investigations Report 96-4024
Estimates of evapotranspiration (ET) for the Rainbow and Silver Springs ground-water basins in north-central Florida were determined using a regional water-~budget approach and compared to estimates computed using a modified Priestley-Taylor (PT) model calibrated with eddy-correlation data. Eddy-correlation measurements of latent 0~E) and sensible (H) heat flux were made monthly...
Hydrologic and geochemical factors affecting the chemistry of small headwater streams in response to acidic deposition on Catoctin Mountain, north-central Maryland
Karen C. Rice, Owen P. Bricker
1996, Water-Resources Investigations Report 95-4155
Hydrologic and water-quality data were collected at a precipitation-collection station and from two small watersheds on Catoctin Mountain, north- central Maryland, as part of an investigation of episodic acidification and its effects on streamwater quality. Data were collected from June 1990 through December 1993. Descriptions of the water shed instrumentation,...
Time-dependent Data System (TDDS); an interactive program to assemble, manage, and appraise input data and numerical output of flow/transport simulation models
R.S. Regan, R.W. Schaffranek, R.A. Baltzer
1996, Water-Resources Investigations Report 96-4143
A system of functional utilities and computer routines, collectively identified as the Time-Dependent Data System CI DDS), has been developed and documented by the U.S. Geological Survey. The TDDS is designed for processing time sequences of discrete, fixed-interval, time-varying geophysical data--in particular, hydrologic data. Such data include various, dependent variables...
Ground-water resources and water-supply alternatives in the Wawona area of Yosemite National Park, California
J. W. Borchers
1996, Water-Resources Investigations Report 95-4229
Planning efforts to implement the 1980 General Management Plan, which recommends relocating park administrative facilities and employee housing from Yosemite Valley in Yosemite National Park, California, have focused on the availability of water at potential relocation sites within the park. Ground-water resources and water-supply alternatives in the Wawona area, one...
Low-flow characteristics at selected sites on streams in southern and western Puerto Rico
Luis Santiago-Rivera
1996, Water-Resources Investigations Report 95-4147
Knowledge of the magnitude and frequency of low flows is important for the optimal development of surface-water resources in Puerto Rico. This report presents analyses of low-flow data for 9 continuous-record gaging stations and 105 partial-record stations in southern and western Puerto Rico. The report includes analyses of lowflow data...
Distribution of petroleum hydrocarbons and toluene biodegradation, Knox Street fire pits, Fort Bragg, North Carolina
S.L. Harden, J. E. Landmeyer
1996, Water-Resources Investigations Report 96-4066
An investigation was conducted at the Knox Street fire pits, Fort Bragg, North Carolina, to monitor the distribution of toluene, ethylbenzene, and xylene (TEX) in soil vapor, ground water, and ground-water/vapor to evaluate if total concentrations of TEX at the site are decreasing with time, and to quantify biodegradation rates...
Methods for estimating low-flow characteristics of ungaged streams in selected areas, northern Florida
Roger P. Rumenik, J. W. Grubbs
1996, Water-Resources Investigations Report 96-4124
Methods for estimating low-flow frequency characteristics at ungaged sites were developed for two areas in northern Florida. In the Yellow, Blackwater, Escambia, and Perdido River Basins study area (northwestern Florida), regional regression equations were developed for estimating the 7- and 30-day, 2- and 10-year low-flow characteristic (Q7,2, Q7,10, Q30,2, and...
Ground-water flow patterns and water budget of a bottomland forested wetland, Black Swamp, eastern Arkansas
G.J. Gonthier, B.A. Kleiss
1996, Water-Resources Investigations Report 95-4192
The U.S. Geological Survey, working in cooperation with the U.S. Army Corps of Engineers, Waterways Experiment Station, collected surface-water and ground-water data from 119 wells and 13 staff gages from September 1989 to September 1992 to describe ground-water flow patterns and water budget in the Black Swamp, a bottomland forested...
Availability and quality of water from drift aquifers in Marshall, Pennington, Polk, and Red Lake counties, northwestern Minnesota
R. J. Lindgren
1996, Water-Resources Investigations Report 95-4201
Sand and gravel aquifers present within glacial deposits are important sources of water in Marshall, Pennington, Polk, and Red Lake Counties in northwestern Minnesota. Saturated thicknesses of the unconfined aquifers range from 0 to 30 feet. Estimated horizontal hydraulic conductivities range from 2.5 to 600 feet per day. Transmissivity of...
