Abstract: Flow in the unconsolidated glacial deposits near the city of Carmel in central Indiana was simulated by a digital-computer model in a study of hydraulic characteristics of the deposits. The study shows that 21 • 3 million gallons per day (933 liters per second) of additional water could be withdrawn from the aquifer for an indefinite period of time. This pumpage is approximately 5 million gallons per day (219 liters per second) above the projected water needs of Carmel for 1990. Saturated thickness, transmissivity, and storage coefficient of the outwash aquifer along the White River east of Carmel were determined, using available data supplemented by test drilling . The saturated thickness of the aquifer ranges from 10 to 110 feet 0 to 34 meters ); transmissivity ranges from 1,000 feet squared per day (93 meters squared per day) to 24 ,000 feet squared per day (2 ,230 meters squared per day); and the average storage coefficient is 0.11.

From purpose and scope: Objectives of the study were to analyze the water budget of the outwash aquifer, estimate the amount of water that could be pumped from the aquifer, and determine the effect of pumping on water levels and streamflow.

From purpose and scope: The objectives of this cooperative investigation between the U.S. Geological Survey and Southwest Kansas Groundwater Management District No. 3 were (1) to update and interpret geologic and hydrologic information affecting the Ogallala aquifer in Ford County, and (2) to evaluate hydrologic conditions in the Ogallala aquifer in Ford County during 1980 and 1981.

Abstract: A glacial outwash aquifer of about 70 square miles in the Scioto River valley southeast of Columbus, Ohio, was modeled as a potentially major source of water. The model was constructed from available hydrologic data: Records of precipitation, well hydrographs, well logs, two ground-water level surveys, and analyses of six aquifer tests. Utilizing this array of data, water levels determined from a series of steady-state simulations of different hydraulic conductivity distributions were calibrated against measured (December 1977) ground-water levels. The simulations that provided the best matches used two hydraulic conductivity distributions: One was an areally varying hydraulic conductivity distribution; the other an areally uniform hydraulic conductivity (40 feet per day) distribution. After these more probable hydraulic conductivity distributions were found, they were utilized in steady state maximal pumping simulations. The maximal well-field yield of these simulations was 20.5 million gallons per day for the areally varying hydraulic conductivity distribution, and 11.3 million gallons per day for the areally uniform hydraulic conductivity. Sensitivity of well yield to changes in well position and streambed leakance changes was investigated also.

From introduction: The purpose of this report is to describe the hydrology and potential impacts of mining in the vicinity of the town of Rock Island in northeastern Le Flore County where the upper and lower Harshorne coals are at or near the surface and amenable to surface mining.

From introduction: This report is part of an overall study to model the flow and to describe the water-quality characteristics of the glacial outwash aquifer in part of the Scioto River basin. The purpose of this report is to describe the development of a transient-state digital-computer model and the simulated water-level resulting from anticipated withdrawal by up to six new municipal wells.

This report uses a digital model to predict the projected increase in ground-water use caused by a population influx for September 1976 in Cortland, New York. It contains maps, tables, and other figures.

From abstract: From parts of the area, water for domestic use obtained from the fractured crystalline-rock aquifer contained excessive concentration of dissolved fluoride, dissolved nitrite plus nitrate, dissolved solids, dissolved iron, dissolved manganese, dissolved zinc, coliform bacteria, gross alpha radiation, and gross beta radiation. Based on water-quality analyses from 26 wells located in small urbanized areas, water from 21 of the wells contained excessive concentrations of one of more constituents.

From introduction: The specific objectives of the study were to: (1) Determine the premining hydrologic and geochemical conditions in the 28 mi2 area; (2) provide a premining data base from which to measure the magnitude of change in the hydrologic system due to coal mining; and (3) determine the probable effects of mining on the water resources in the area.

Report and geological survey. This report examines the effects of phosphate mining in Osceola National Forest, a 245-square mile area in Columbia and Baker Counties, Florida. It includes maps, graphs, and tables.

From introduction: This report summarizes estimates of Ohio water use for 1975. These figures are revisions of data which were compiled by the U.S. Geological Survey in the Circular, "Estimated Water Use in the United States, 1975" (Murray and Reeves, 1976). In that circular, water-use figures were aggregated for the state of Ohio as a whole, and for the U.S. Water Resources Council's Great Lakes and Ohio River hydrologic regions.

From introduction: This report is the third in a series by the U.S. Geological Survey whose aim is to gain better knowledge of ground-water flow and ground-water-surface-water relations in the folded and faulted Valley and Ridge province of Tennessee.

From abstract: A two-dimensional digital model of the ground-water-flow system was constructed to test the conceptual model of the system ad to study the effects of development on ground-water levels and flow in the White River.

Abstract: Estimates of the travel time of waterborne particles in streams is important for pollution studies and in the event of spills of contaminants. This report provides data for the 16 Indiana streams on which time-of-travel information has been obtained and a means for estimating the velocity of any naturally flowing stream in Indiana with a drainage area of 80 square miles (210 square kilometers) or more. Measured velocity rates compiled from the time-of-travel data collected in Indiana are related to 25, 50, 100, and 200 percent of the average discharge of streams shown in this report. Velocities at these discharges are significantly related to their respective watershed characteristics (average discharge and slope).Generalized relations of the velocities as functions of the streams' watershed characteristics are developed as multivariate regression equations using the data from each of the measured streams.

From abstract: This report presents collected data on daily water use for Florida in the year 1975 and includes several maps and tables.

From introduction: The purpose of the study was to assemble data on the occurrence, movement, availability and chemical quality of ground water in the Hackensack River basin in Bergen and Hudson Counties, New Jersey; to evaluate and interpret the data; and to make the results available to the public.

This report provides a detailed survey of the artesian aquifer that acts as the main source of water "for Brooks, Lowndes, and western Eocene Counties in south Georgia." It includes maps, tables, and graphs.

From purpose and scope: The U.S. Geological Survey, in cooperation with Lee County, conducted an investigation of the river in 1976-79. This investigation was planned to provide a broader base if information than heretofore available on the freshwater resources of the Caloosahatchee River basin, and in particular to provide information on water-quality conditions with emphasis on nutrients and algal growth. In addition to data collected during 1976-79, some earlier data collected by the U.S. Geological Survey were included to evaluate annual variation and trends.

From purpose and scope: The purpose of this report is to present an analysis of the stream-aquifer system of the Santa Fe River basin, including the quantity and quality of water available from each source and their interrelation. Much information is available in previously published reports, but the basin has not been previously evaluated as a hydrologic unit.

From introduction: This report documents the results of the 1980 Florida water assessment made by personnel of the five Water Management Districts in a joint effort with U.S. Geological Survey personnel. The study was made as part of a statewide cooperative program with the Florida Department of Environmental Regulation, Northwest Florida Water Management District, St. Johns River Water Management District, South Florida Water Management District, Southwest Florida Water Management District, and the Suwannee River Management District.

From abstract: Rising ground-water levels are a problem in many urban areas in the United States because of the potential damage to man-made structures such as basements, foundations, utility lines, and septic tank systems. A decrease in ground-water withdrawals, above average precipitation, recharge from irrigation water, and leaky water lines and sewers are some of the causes of water level rises in cities such as San Bernardino, California; Greely and Fort Collins, Colorado; New York City boroughs of Brooklyn and Queens; and Louisville, Kentucky. Dewatering is necessary in many urban areas to maintain water levels below structures.

This report analyses resistivity and porosity logs to determine water-quality trends in carbonate aquifers. It contains tables and other figures.

Report and geological survey. This report uses maps that depict climatic factors to make a flood-frequency model. It includes numerous maps, tables, and other figures.

From introduction: The overall purpose of this study were twofold: (1) To determine where greatest yielding wells at shallowest depths would produce water of suitable quality for municipal and industrial supplies; and (2) to determine regional effects of additional water development on the hydrologic system.