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...
Potentiometric surface of the Cockfield aquifer in southeastern Arkansas and the Wilcox aquifers in southern and northeastern Arkansas, October 1996-July 1997
Robert L. Joseph
1998, Water-Resources Investigations Report 98-4084
The Cockfield and Wilcox aquifers are secondary sources of water for local use in southern and northeastern Arkansas, where in 1995 more than 51 million gallons per day of water was withdrawn. During October 1996 to July 1997, water levels in the Cockfield and Wilcox aquifers were measured in 104...
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...
Regional rainfall-runoff relations for simulation of streamflow for watersheds in Du Page County, Illinois
James J. Duncker, Charles S. Melching
1998, Water-Resources Investigations Report 98-4035
Rainfall and streamflow data collected from July 1986 through September 1993 were utilized to calibrate and verify a continuous-simulation rainfall-runoff model for three watersheds (11.8--18.0 square miles in area) in Du Page County. Classification of land cover into three categories of pervious (grassland, forest/wetland, and agricultural land) and one category...
Streambed stability and scour potential at selected bridge sites in Michigan
D. J. Holtschlag, R. L. Miller
1998, Water-Resources Investigations Report 98-4024
Contraction scour in the main stream channel at a bridge and local scour near piers and abutments can result in bridge failure. Estimates of contraction-scour and local-scour potentials associated with the 100-year flood were computed for 13 bridge sites in Michigan by use of semi-theoretical equations and procedures recommended by...
Peak-flow frequency for tributaries of the Colorado River downstream of Austin, Texas
William H. Asquith
1998, Water-Resources Investigations Report 98-4015
A procedure to estimate the peak discharge associated with large floods is needed for tributaries of the Colorado River downstream of Austin, Texas, so that appropriate peak discharges can be used to estimate floodplain boundaries and used for the design of bridges and other structures. The U.S. Geological Survey, in...
Ground-water age, flow, and quality near a landfill, and changes in ground-water conditions from 1976 to 1996 in the Swinomish Indian Reservation, northwestern Washington
B. E. Thomas, S.E. Cox
1998, Water-Resources Investigations Report 98-4014
This report describes the results of two related studies: a study of ground-water age, flow, and quality near a landfill in the south-central part of the Swinomish Indian Reservation; and a study of changes in ground-water conditions for the entire reservation from 1976 to 1996. The Swinomish Indian Reservation is...
Hydrogeology and simulation of ground-water flow in the Paluxy aquifer in the vicinity of Landfills 1 and 3, U.S. Air Force Plant 4, Fort Worth, Texas
Eve L. Kuniansky, Stanley T. Hamrick
1998, Water-Resources Investigations Report 98-4023
Ground-water contamination of the surficial terrace alluvial aquifer has occurred at U.S. Air Force Plant 4, a government-owned, contractor-operated facility, northwest of Fort Worth, Texas. A poorly constructed monitoring well, P–22M, open to the underlying middle zone of the Paluxy aquifer was installed at landfill 3, October 1987, allowing leakage...
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...
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...
Assessment of ground-water vulnerability to atrazine leaching in Kent County, Michigan; review, comparison of results of other studies and verification
D. J. Holtschlag, C. L. Luukkonen
1998, Water-Resources Investigations Report 98-4006
Model assumptions and parameters used in an earlier study of the vulnerability of ground water in Kent County, Michigan, to atrazine contamination were reviewed and compared with other studies. The review indicated that model assumptions are consistent with those used in other models and that the parameters assigned in the...
Nutrient loading and selected water-quality and biological characteristics of Dickinson Bayou near Houston, Texas, 1995-97
Jeffery W. East, Edna M. Paul, Stephen D. Porter
1998, Water-Resources Investigations Report 98-4012
Data were collected at 10 stations in the Dickinson Bayou watershed near Houston, Texas, from March 1995 through February 1997 to estimate the concentrations, loads, and yields of selected nutrients that enter the bayou; to characterize the effects on nutrient concentrations of flow conditions, seasonality, and land use; and to...
Digital geologic map of the Thirsty Canyon NW quadrangle, Nye County, Nevada
S.A. Minor, P. P. Orkild, K. A. Sargent, R.G. Warren, D.A. Sawyer, J.B. Workman
1998, Open-File Report 98-623
This digital geologic map compilation presents new polygon (i.e., geologic map unit contacts), line (i.e., fault, fold axis, dike, and caldera wall), and point (i.e., structural attitude) vector data for the Thirsty Canyon NW 7 1/2' quadrangle in southern Nevada. The map database, which is at 1:24,000-scale resolution, provides geologic...
Summary statistics and graphical comparisons of historical hydrologic and water-quality data, Seco Creek Watershed, South-Central Texas
David W. Brown, Richard N. Slattery, Jon R. Gilhousen
1998, Open-File Report 98-627
The U.S. Geological Survey collected hydrologic (rainfall, streamflow, and reservoir content) and water-quality data in the Seco Creek watershed, south-central Texas. Most of the data from 15 sites were collected as part of a study in cooperation with the U.S. Department of Agriculture and the Texas State Soil and Water...
Evaluation of geophysical logs and video surveys in boreholes adjacent to the Berkley Products Superfund Site, West Cocalico Township, Lancaster County, Pennsylvania
Dennis J. Low, Randall W. Conger
1998, Open-File Report 98-645
Between February 1998 and April 1998, geophysical logs were collected in nine boreholes adjacent to the Berkley Products Superfund Site, West Cocalico Township, Lancaster County, Pa. Video surveys were conducted on four of the nine boreholes. The boreholes range in depth from 320 to 508 feet below land surface, are...
Paleomagnetic data from basaltic lava flows of the northeast rift zone of Mauna Loa volcano, Hawaii
D.E. Champion, J. P. Lockwood
1998, Open-File Report 98-782
Oreshoot zoning in the Carlin-type Betze orebody, Goldstrike Mine, Eureka County, Nevada
Stephen G. Peters, Gregory C. Ferdock, Maria B. Woitsekhowskaya, Robert Leonardson, Jerry Rahn
1998, Open-File Report 98-620
Field and laboratory investigations of the giant Betze gold orebody, the largest Carlin-type deposit known, in the north-central Carlin trend, Nevada document that the orebody is composed of individual high-grade oreshoots that contain different geologic, mineralogic, and textural characteristics. The orebody is typical of many structurally controlled Carlin-type deposits, and...
Slope maps of the San Francisco Bay region, California: A digital database
Scott E. Graham, Richard J. Pike
1998, Open-File Report 98-766
PREFACE: Topography, the configuration of the land surface, plays a major role in various natural processes that have helped shape the ten-county San Francisco Bay region and continue to affect its development. Such processes include a dangerous type of landslide, the debris flow (Ellen and others, 1997) as well...
The probability of lava inundation at the proposed and existing Kulani prison sites
J. P. Kauahikaua, F. A. Trusdell, C. C. Heliker
1998, Open-File Report 98-794
The State of Hawai`i has proposed building a 2,300-bed medium-security prison about 10 km downslope from the existing Kulani medium-security correctional facility. The proposed and existing facilities lie on the northeast rift zone of Mauna Loa, which last erupted in 1984 in this same general area. We use the best...
Statistical summaries of selected Iowa streamflow data through September 1996
E.E. Fischer, D. A. Eash
1998, Open-File Report 98-170
Statistical summaries of streamflow data collected at 156 streamflow-gaging stations in Iowa are presented in this report. All gaging stations included for analysis have at least 10 years of continuous record collected before or through September 1996. The statistical summaries include (1) statistics of monthly and annual mean discharges; (2)...
Review of Aquifer Test Results for the Lansdale Area, Montgomery County, Pennsylvania, 1980–95
Daniel J. Goode, Lisa A. Senior
1998, Open-File Report 98-294
Aquifer and aquifer-isolation test results in and around North Penn Area 6 Superfund site, Lansdale, Montgomery County, Pennsylvania are reviewed to provide estimated aquifer properties for use in a numerical model of ground-water flow. This review was made to support of remedial action investigations by U.S. Environmental Protection Agency (USEPA),...
Techniques for estimating peak-flow magnitude and frequency relations for South Dakota streams
Steven K. Sando
1998, Water-Resources Investigations Report 98-4055
A generalized skew coefficient analysis was completed for South Dakota to test the validity of using the generalized skew coefficient map in Bulletin 17B of the 1982 United States Water Resources Council, ?Guidelines for Determining Flood Flow Frequency.? Results of the analysis indicate that the Bulletin 17B generalized skew coefficient...
Hydrogeology and simulation of ground-water flow in the Sandstone Aquifer, northeastern Wisconsin
T.D. Conlon
1998, Water-Resources Investigations Report 97-4096
Municipalities in the lower Fox River Valley in northeastern Wisconsin obtain their water supply from a series of permeable sandstones and carbonates of Cambrian to Ordovician age. Withdrawals from this "sandstone aquifer" have resulted in water levels declining at a rate of more than 2 feet per year. The U.S....
Simulation of ground-water flow, Dayton area, southwestern Ohio
D.H. Dumouchelle
1998, Water-Resources Investigations Report 98-4048
A numerical model was used simulate the regional ground-water-flow system in the Dayton area in southwestern Ohio. Ground water is the primary source of drinking water for the Dayton area. The aquifer consists of glacial sands and gravels in a buried bedrock valley. The shale bed rock in the area...
Potentiometric surface of the Sparta aquifer in eastern and south-central Arkansas and north-central Louisiana, and the Memphis Aquifer in east-central Arkansas, October 1996-July 1997
Robert L. Joseph
1998, Water-Resources Investigations Report 97-4282
During the 1997 water year, the water level in the Sparta and Memphis aquifers was measured in about 274 wells in Arkansas, and the water level in the Sparta aquifer was measured in about 55 wells in Louisiana. The potentiometric surface data reveal spatial trends across the study area. In...
