Relation of algal biomass to characteristics of selected streams in the Lower Susquehanna River basin
Robin A. Brightbill, Michael D. Bilger
1998, Water-Resources Investigations Report 98-4144
Seven small tributary streams with drainage areas ranging from 12.6 to 71.9 square miles, representative of both limestone and freestone settings, in the Lower Susquehanna River Basin were sampled for algae, nutrients, water quality, habitat, land use, hydrology, fish, and invertebrates. Nutrients, site characteristics, and selected characteristics of the invertebrate...
Water quality, hydrology, and invertebrate communities of three remnant wetlands in Missouri, 1995-97
David C. Heimann, Suzanne R. Femmer
1998, Water-Resources Investigations Report 98-4190
This report presents the results of a study conducted by the U.S. Geological Survey in cooperation with the Missouri Department of Natural Resources from December 1995 through May 1997 to describe the water quality, hydrologic, and invertebrate characteristics of three remnant wetlands. These data may be used to help develop...
Temporal and vertical variation of hydraulic head in aquifers in the Edgewood area, Aberdeen Proving Ground, Maryland
Colleen A. Donnelly, Fredrick J. Tenbus
1998, Water-Resources Investigations Report 98-4047
Water-level data and interpretations from previous hydrogeological studies conducted by the U.S. Geological Survey in the Edgewood Area of Aberdeen Proving Ground (APG), Maryland, were compared to determine similarities and differences among the aquifers. Because the sediments that comprise the shallow aquifers are discontinuous, the shallow ground-water-flow systems are local...
An implicit dispersive transport algorithm for the US Geological Survey MOC3D solute-transport model
K.L. Kipp Jr., Leonard F. Konikow, G.Z. Hornberger
1998, Water-Resources Investigations Report 98-4234
This report documents an extension to the U.S. Geological Survey MOC3D transport model that incorporates an implicit-in-time difference approximation for the dispersive transport equation, including source/sink terms. The original MOC3D transport model (Version 1) uses the method of characteristics to solve the transport equation on the basis of the velocity...
Lithology and fracture characterization from drilling investigations in the Mirror Lake area, Grafton County, New Hampshire
C. D. Johnson, A.H. Dunstan
1998, Water-Resources Investigations Report 98-4183
The lithology and fracture network of the bedrock aquifer in the Mirror Lake area were characterized from hydrogeologic data collected from 1979-95 in Grafton County, N.H. The collection of these data is an integral part of an ongoing multidisciplinary study by the U.S. Geological Survey to characterize groundwater flow and...
Application of nonlinear-regression methods to a ground-water flow model of the Albuquerque Basin, New Mexico
C. R. Tiedeman, J. M. Kernodle, D. P. McAda
1998, Water-Resources Investigations Report 98-4172
This report documents the application of nonlinear-regression methods to a numerical model of ground-water flow in the Albuquerque Basin, New Mexico. In the Albuquerque Basin, ground water is the primary source for most water uses. Ground-water withdrawal has steadily increased since the 1940's, resulting in large declines in water levels...
Hydrologic and meteorological data for an unsaturated-zone study area near the Radioactive Waste Management Complex, Idaho National Engineering and Environmental Laboratory, Idaho, 1990-96
K. S. Perkins, J. R. Nimmo, J. R. Pittman
1998, Open-File Report 98-9
Results of borehole geophysical logging and hydraulic tests conducted in Area D supply wells, former U.S. Naval Air Warfare Center, Warminster, Pennsylvania
Ronald A. Sloto, Kevin E. Grazul
1998, Water-Resources Investigations Report 98-4129
Borehole geophysical logging, aquifer tests, and aquifer-isolation (packer) tests were conducted in four supply wells at the former U.S. Naval Air Warfare Center (NAWC) in Warminster, PA, to identify the depth and yield of water-bearing zones, occurrence of borehole flow, and effect of pumping on nearby wells. The study was...
Estimating ground-water exchange with lakes using water-budget and chemical mass-balance approaches for ten lakes in ridge areas of Polk and Highlands counties, Florida
L. A. Sacks, Amy Swancar, T. M. Lee
1998, Water-Resources Investigations Report 98-4133
Water budget and chemical mass-balance approaches were used to estimate ground-water exchange with 10 lakes in ridge areas of Polk and Highlands Counties, Florida. At each lake, heads were monitored in the surficial aquifer system and deeper Upper Floridan aquifer, lake stage and rainfall were measured continuously, and lakes and...
Hydrologic characteristics and water budget for Swift Creek Reservoir, Virginia, 1997
S. C. Skrobialowski
1998, Water-Resources Investigations Report 98-4122
Water-quality and algal conditions in the North Umpqua River Basin, Oregon, 1992-95, and implications for resource management
Chauncey W. Anderson, Kurt D. Carpenter
1998, Water-Resources Investigations Report 98-4125
This report describes the results of a synoptic water-quality and algal investigation during July 1995 at 36 stream sites in a 1,350 square-mile area of the North Umpqua River Basin, Oregon. The study area includes a headwaters hydroelectric project area, a Wild and Scenic reach in the main stem immediately...
Areas contributing ground water to the Peconic Estuary, and ground-water budgets for the north and south forks and Shelter Island, eastern Suffolk County, New York
C.E. Schubert
1998, Water-Resources Investigations Report 97-4136
The Peconic Estuary, at the eastern end of Long Island, has been plagued by a recurrent algal bloom, locally referred to as ?Brown Tide,? that has caused the severe decline of local marine resources. Although the factors that trigger Brown Tide blooms remain uncertain, groundwater discharge has previously been shown...
Estimate of aquifer properties by numerically simulating ground-water/surface-water interactions, Fort Wainwright, Alaska
Allen S. Nakanishi, Michael R. Lilly
1998, Water-Resources Investigations Report 98-4088
MODFLOW, a finite-difference model of ground-water flow, was used to simulate the flow of water between the aquifer and the Chena River at Fort Wainwright, Alaska. The model was calibrated by comparing simulated ground-water hydrographs to those recorded in wells during periods of fluctuating river levels. The best fit between...
Effects of hydrologic, biological, and environmental processes on sources and concentrations of fecal bacteria in the Cuyahoga River, with implications for management of recreational waters in Summit and Cuyahoga Counties, Ohio
Donna N. Myers, G. F. Koltun, Donna S. Francy
1998, Water-Resources Investigations Report 98-4089
Discharges of fecal bacteria (fecal coliform bacteria and Escherichia coli ) to the middle main stem of the Cuyahoga River from storm water, combined sewers, and incompletely disinfected wastewater have resulted in frequent exceedances of bacteriological water-quality standards in a 23-mile reach of the river that flows through the Cuyahoga...
Hydrology, water quality, and nutrient loads to the Bauman Park Lake, Cherry Valley, Winnebago County, Illinois, May 1996–April 1997
Robert T. Kay, Aaron Trugestaad
1998, Water-Resources Investigations Report 98-4087
The Bauman Park Lake occupies a former sand and gravel quarry in the Village of Cherry Valley, Illinois. The lake is eutrophic, and nuisance growths of algae and aquatic macrophytes are supported by nutrients (nitrogen and phosphorus) that are derived primarily from ground-water inflow, the main source of water for...
Evaluation of hydrologic data collected at the North Penn Area 12 Superfund Site, Montgomery County, Pennsylvania
Lisa A. Senior, Kevin E. Grazul, Charles R. Wood
1998, Water-Resources Investigations Report 98-4076
The North Penn Area 12 Superfund Site is underlain by the Lockatong Formation, which consists of interbedded gray to black siltstone and shale. The beds of the Lockatong Formation strike northeast and dip about 10d to 20d to the northwest in the vicinity of the site. Ground water moves through...
Fish communities and their relation to physical and chemical characteristics of streams from selected environmental settings in the Lower Susquehanna River basin, 1993-95
Michael D. Bilger, Robin A. Brightbill
1998, Water-Resources Investigations Report 98-4004
Studies of fish-community composition were conducted annually in selected reaches (from 100 to 303 meters in length) on seven streams from June 1993 to June 1995 within the Lower Susquehanna River Basin. In 1994, additional reaches were selected on three of the streams, resulting in a total of 28 samples....
Potentiometric surface of the Ozark Aquifer in northern Arkansas, 1995
Aaron L. Pugh
1998, Water-Resources Investigations Report 98-4000
The Ozark aquifer in northern Arkansas is comprised of dolostones, limestones, sandstones, and shales of Late Cambrian to Middle Devonian age, and ranges in thickness from approximately 1,100 feet to more than 4,000 feet. Hydrologically, the aquifer is complex, characterized by discrete and diffuse flow components with large spatial variations...
One-Dimensional Transport with Inflow and Storage (OTIS): A Solute Transport Model for Streams and Rivers
Robert L. Runkel
1998, Water-Resources Investigations Report 98-4018
OTIS is a mathematical simulation model used to characterize the fate and transport of water-borne solutes in streams and rivers. The governing equation underlying the model is the advection-dispersion equation with additional terms to account for transient storage, lateral inflow, first-order decay, and sorption. This equation and the associated equations...
Analytical methods, numerical modeling, and monitoring strategies for evaluating the effects of ground-water withdrawals on unconfined aquifers in the New Jersey Coastal Plain
Edward Modica
1998, Water-Resources Investigations Report 98-4003
Analytical and numerical solutions of ground-water withdrawals in the unconfined part of the Kirkwood-Cohansey aquifer system of the Coastal Plain of New Jersey were evaluated for their usefulness in predicting the area of influence of a pumped well and in determining hydraulic characteristics of an aquifer. Additionally, simulations of ground-water...
A reconnaissance for sulfonylurea herbicides in waters of the Midwestern USA: An example of collaboration between the public and private sectors
William A. Battaglin, Edward T. Furlong, Carl John Peter
1998, Fact Sheet 046-98
No abstract available....
Water quality in the Willamette Basin, Oregon, 1991-95
Dennis A. Wentz, Bernadine A. Bonn, Kurt D. Carpenter, Stephen R. Hinkle, Mary L. Janet, Frank A. Rinella, Mark A. Uhrich, Ian R. Waite, Antonius Laenen, Kenneth E. Bencala
1998, Circular 1161
This report is intended to summarize major findings that emerged between 1991 and 1995 from the water-quality assessment of the Willamette Basin Study Unit and to relate these findings to water-quality issues of regional and national concern. The information is primarily intended for those who are involved in water-resource management....
Probability of detecting atrazine/desethyl-atrazine and elevated concentrations of nitrate (NO2+NO3-N) in ground water in the Idaho part of the upper Snake River basin
Michael G. Rupert
1998, Water-Resources Investigations Report 98-4203
Draft Federal regulations may require that each State develop a State Pesticide Management Plan for the herbicides atrazine, alachlor, cyanazine, metolachlor, and simazine. This study developed maps that the Idaho State Department of Agriculture might use to predict the probability of detecting atrazine and desethyl-atrazine (a breakdown product of atrazine)...
Evaluation of the hydrologic system and selected water-management alternatives in the Owens Valley, California
Wesley R. Danskin
1998, Water Supply Paper 2370-H
The Owens Valley, a long, narrow valley along the east side of the Sierra Nevada in east-central California, is the main source of water for the city of Los Angeles. The city diverts most of the surface water in the valley into the Owens River-Los Angeles Aqueduct system, which transports...
Water quality in the central Columbia Plateau, Washington and Idaho, 1992-95
Alex K. Williamson, Mark D. Munn, Sarah J. Ryker, Richard J. Wagner, James C. Ebbert, Ann M. Vanderpool
1998, Circular 1144
Water quality in the Central Columbia Plateau of eastern Washington and western Idaho has been adversely affected by agriculture, especially in irrigated areas, according to the results of a five-year investigation by the U. S. Geological Survey (USGS). Some improvements, however, are noticeable, such as less sediment being washed into...
