Review and evaluation of a model for simulating the natural hydrology of South Florida
Jerad D. Bales, Janice M. Fulford, Eric D. Swain
1996, Fact Sheet 180-96
The South Florida Ecosystem Program is an intergovernmental effort to re-establish and maintain the ecosystem of South Florida. One element of the restoration effort is the development of a firm scientific basis for making management decisions. The U.S. Geologcal Survey (USGS) is one of the agencies that provides this needed...
Trends in surface-water quality in Connecticut, 1969-88
E. C. Trench
1996, Water-Resources Investigations Report 96-4161
Surface-water-quality data from selected monitoring stations in Connecticut were analyzed for trend, using the Seasonal Kendall test, for water years 1969-88, 1975-88, and 1981-88. The number of constituents and stations evaluated varied with the different time periods. The 39 monitoring stations included 26 freshwater streams with associated discharge data, 7...
Spatial and temporal distribution of specific conductance, boron, and phosphorus in a sewage-contaminated aquifer near Ashumet Pond, Cape Cod, Massachusetts
K.W. Bussey, D. A. Walter
1996, Open-File Report 96-472
Spatial and temporal distributions of specific conductance, boron, and phosphorus were determined in a sewage-contaminated sand and gravel aquifer near Ashumet Pond, Cape Cod, Massachusetts. The source of contamination is secondarily treated sewage that has been discharged onto rapid- infiltration sand beds at the Massachusetts Military Reservation since 1936. Contaminated...
Hydrogeology of the area near the J4 test cell, Arnold Air Force Base, Tennessee
C.J. Haugh
1996, Water-Resources Investigations Report 96-4182
The U.S. Air Force operates a major aerospace systems testing facility at Arnold Engineering Development Center (AEDC) in Coffee County, Tennessee. Dewatering operations at one of the test facilities, the J4 test cell, has affected the local ground-water hydrology. The J4 test cell is approximately 100 feet in diameter, extends...
Distribution of lithostratigraphic units within the central block of Yucca Mountain, Nevada; a three-dimensional computer-based model, version YMP.R2.0
D.C. Buesch, James E. Nelson, Robert P. Dickerson, Ronald M. Drake II, Richard W. Spengler, Jeffrey K. Geslin, Thomas C. Moyer, Carma A. San Juan
1996, Open-File Report 95-124
Precipitation, streamflow and water quality data from selected sites in the City of Charlotte and Mecklenburg County, North Carolina, 1993-95
J. B. Robinson, W. F. Hazell, R. G. Garrett
1996, Open-File Report 96-150
Charlotte and Mecklenburg County from October 1993 through June 1995 to identify the type, concentration, and amount of nonpoint-source stormwater runoff within the area. The data collected include measurements of precipitation; streamflow; physical characteristics, such as water temperature, pH, specific conductance, biochemical oxygen demand, oil and grease, and suspended sediment...
Hydrogeology and analysis of ground-water-flow system, Sagamore Marsh area, southeastern Massachusetts
Donald A. Walter, John P. Masterson, Paul M. Barlow
1996, Water-Resources Investigations Report 96-4200
A study of the hydrogeology and an analysis of the ground-water-flow system near Sagamore Marsh, southeastern Massachusetts, was undertaken to improve the understanding of the current (1994 95) hydrogeologic conditions near the marsh and how the ground-water system might respond to proposed changes in the tidal-stage regime of streams that...
Burial and thermal history of the Paradox Basin, Utah and Colorado, and petroleum potential of the Middle Pennsylvanian Paradox Formation
Vito F. Nuccio, Steven M. Condon
1996, Bulletin 2000-O
The Ismay-Desert Creek interval and Cane Creek cycle of the Alkali Gulch interval of the Middle Pennsylvanian Paradox Formation in the Paradox Basin of Utah and Colorado contain excellent organic-rich source rocks having total organic carbon contents ranging from 0.5 to 11.0 percent. The source rocks in both intervals contain...
Description and field analysis of a coupled ground-water/surface-water flow model (MODFLOW/BRANCH) with modifications for structures and wetlands in southern Dade County, Florida
E.D. Swain, Barbara Howie, Joann Dixon
1996, Water-Resources Investigations Report 96-4118
A coupled surface-water model (BRANCH) and ground-water model (MODFLOW) model were tested to simulate the interacting wetlands/surface-water/ ground-water system of southern Dade County. Several options created for the MODFLOW ground- ground-water model were used in representing this field situation. The primary option is the MODBRANCH interfacing software, which allows leakage...
Computer model of Raritan River Basin water-supply system in central New Jersey
Paul Dunne, Gary D. Tasker
1996, Open-File Report 96-360
This report describes a computer model of the Raritan River Basin water-supply system in central New Jersey. The computer model provides a technical basis for evaluating the effects of alternative patterns of operation of the Raritan River Basin water-supply system during extended periods of below-average precipitation. The computer model is...
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....
Detailed study of water quality, bottom sediment, and biota associated with irrigation drainage in the Klamath Basin, California and Oregon, 1990-92
Peter D. Dileanis, Steven E. Schwarzbach, Jewel Bennett
1996, Water-Resources Investigations Report 95-4232
The effect of irrigation drainage on the water quality and wildlife of the Klamath Basin in California and Oregon was evaluated during 1990-92 as part of the National Irrigation Water Quality Program of the U.S. Department of the Interior. The study focused on land serviced by the Bureau of Reclamation...
Lake-level frequency analysis for Devils Lake, North Dakota
Gregg J. Wiche, Aldo V. Vecchia
1996, Water Supply Paper 2469
Two approaches were used to estimate future lake-level probabilities for Devils Lake. The first approach is based on an annual lake-volume model, and the second approach is based on a statistical water mass-balance model that generates seasonal lake volumes on the basis of seasonal precipitation, evaporation, and inflow. Autoregressive moving...
Hydrogeologic setting and simulation of pesticide fate and transport in the unsaturated zone of a regolith-mantled, carbonate-rock terrain near Newville, Pennsylvania
D. J. Hippe, D. W. Hall
1996, Water-Resources Investigations Report 96-4062
Physical and chemical data were collected from May 1991 through April 1993 at a 4.5 hectare field site in Cumberland County, Pa., about 5 kilometers southeast of Newville. These data were used to define the hydrogeologic setting of a field site representative of the intensively farmed carbonate valleys of southeastern...
Water resources of Spink County, South Dakota
L.J. Hamilton, L.W. Howells
1996, Water-Resources Investigations Report 96-4056
Spink County, an agricultural area of about 1,505 square miles, is in the flat to gently rolling James River lowland of east-central South Dakota. The water resources are characterized by the highly variable flows of the James River and its tributaries and by aquifers both in glacial deposits of sand...
The effects of flow-path modification on water-quality constituent retention in an urban stormwater detention pond and wetland system, Orlando, Florida
W. S. Gain
1996, Water-Resources Investigations Report 95-4297
Changes in constituent retention in a wet stormwater-detention pond and wetland system in Orlando, Florida, were evaluated following the 1988 installation of a flow barrier which approximately doubled the flow path and increased detention time in the pond. The pond and wetland were arranged in series so that stormwater first...
Low-flow characteristics and profiles for selected streams in the Roanoke River basin, North Carolina
J. Curtis Weaver
1996, Water-Resources Investigations Report 96-4154
An understanding of the magnitude and frequency of low-flow discharges is an important part of protecting surface-water resources and planning for municipal and industrial economic expansion. Low-flow characteristics are summarized for 22 continuous-record gaging stations in North Carolina (19 sites) and Virginia (3 sites) and 60 partial-record gaging stations in...
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...
Water-chemistry and chloride fluctuations in the Upper Floridan Aquifer in the Port Royal Sound area, South Carolina, 1917-93
J. E. Landmeyer, D.L. Belval
1996, Water-Resources Investigations Report 96-4102
Withdrawal of water from the Upper Floridan aquifer south of Port Royal Sound in Beaufort and Jasper Counties, South Carolina, has lowered water levels and reversed the hydraulic gradient beneath Hilton Head Island, South Carolina. Ground water that had previously discharged at the Sound is now being deflected southwest,...
Relations of nonpoint-source nitrate and atrazine concentrations in the High Plains aquifer to selected explanatory variables in six Nebraska study areas
A.D. Druliner, H.H. Chen, T.S. McGrath
1996, Water-Resources Investigations Report 95-4202
Statistical techniques were used to relate nonpoint-source ground-water contamination by nitrate and atrazine to a variety of explanatory variables for six study areas in Nebraska. Water samples were collected from 268 wells in 12 counties from 1984 through 1987 and were analyzed for nitrate concentrations; water samples from 210 of...
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...
The geology and mechanics of formation of the Fort Rock Dome, Yavapai County, Arizona
Gary S. Fuis
1996, Professional Paper 1266
The Fort Rock Dome, a craterlike structure in northern Arizona, is the erosional product of a circular domal uplift associated with a Precambrian shear zone exposed within the crater and with Tertiary volcanism. A section of Precambrian to Quaternary rocks is described, and two Tertiary units, the Crater Pasture Formation...
Estimates of future water demand for selected water-service areas in the upper Duck River basin, central Tennessee
S. S. Hutson, G. E. Schwarz
1996, Water-Resources Investigations Report 96-4140
Estimates of future water demand were determined for selected water-service areas in the upper Duck River basin in central Tennessee through the year 2050. The Duck River is the principal source of publicly-supplied water in the study area providing a total of 15.6 million gallons per day (Mgal/d) in 1993...
Geohydrologic site characterization of the municipal solid waste landfill facility, U.S. Army Air Defense Artillery Center and Fort Bliss, El Paso County, Texas
Cynthia G. Abeyta
1996, Water-Resources Investigations Report 95-4217
Geohydrologic conditions of the Municipal Solid Waste Landfill Facility (MSWLF) on the U.S. Army Air Defense Artillery Center and Fort Bliss, El Paso County, Texas, were evaluated by the U.S. Geological Survey in cooperation with the U.S. Army. The 106.03-acre MSWLF has been in operation since January 1974. The landfill...
Streambed stresses and flow around bridge piers
A.C. Parola, K.J. Ruhl, D.J. Hagerty, B.M. Brown, D.L. Ford, A.A. Korves
1996, Water-Resources Investigations Report 96-4142
Scour of streambed material around bridge foundations by floodwaters is the leading cause of catastrophic bridge failure in the United States. The potential for scour and the stability of riprap used to protect the streambed from scour during extreme flood events must be known to evaluate...
