Evaluation of surface-water/ground-water interactions in the Santa Clara River Valley, Ventura County, California
Eric George Reichard, Steven M. Crawford, Katherine S. Paybins, Peter Martin, Michael Land, Tracy Nishikawa
1999, Water-Resources Investigations Report 98-4208
The interactions of surface water and ground water along the Santa Clara River in Ventura County, California, were evaluated by analyzing river-discharge and water-quality data and geohydrologic information collected by the U.S. Geological Survey between 1993 and 1995 for the Piru, Fillmore, and Santa Paula subbasins. Measurements of discharge and...
Conceptual Model and Numerical Simulation of the Ground-Water-Flow System in the Unconsolidated Sediments of Thurston County, Washington
B. W. Drost, D.M. Ely, W. E. Lum II
1999, Water-Resources Investigations Report 99-4165
The demand for water in Thurston County has increased steadily in recent years because of a rapid growth in population. Surface-water resources in the county have been fully appropriated for many years and Thurston County now relies entirely on ground water for new supplies of water. Thurston County is underlain...
Estimation of magnitude and frequency of floods for streams in Puerto Rico: New empirical models
Orlando Ramos-Gines
1999, Water-Resources Investigations Report 99-4142
Flood-peak discharges and frequencies are presented for 57 gaged sites in Puerto Rico for recurrence intervals ranging from 2 to 500 years. The log-Pearson Type III distribution, the methodology recommended by the United States Interagency Committee on Water Data, was used to determine the magnitude and frequency of floods at...
Episodic sediment-discharge events in Cascade Springs, southern Black Hills, South Dakota
Timothy Scott Hayes
1999, Water-Resources Investigations Report 99-4168
Cascade Springs is a group of artesian springs in the southern Black Hills, South Dakota, with collective flow of about 19.6 cubic feet per second. Beginning on February 28, 1992, a large discharge of red suspended sediment was observed from two of the six known discharge points. Similar events during...
Hydrology, geomorphology, and flood profiles of the Mendenhall River, Juneau, Alaska
Edward G. Neal, Randy H. Host
1999, Water-Resources Investigations Report 99-4150
Water-surface-profile elevations for the 2-, 20-, 25-, 50-, and 100-year floods were computed for the Mendenhall River near Juneau, Alaska, using the U.S. Army Corps of Engineers Hydrologic Engineering Center River Analysis System model. The peak discharges for the selected recurrence intervals were determined using the standard log-Pearson type III...
Use of computer programs STLK1 and STWT1 for analysis of stream-aquifer hydraulic interaction
Leslie A. DeSimone, Paul M. Barlow
1999, Water-Resources Investigations Report 98-4212
Quantifying the hydraulic interaction of aquifers and streams is important in the analysis of stream base fow, flood-wave effects, and contaminant transport between surface- and ground-water systems. This report describes the use of two computer programs, STLK1 and STWT1, to analyze the hydraulic interaction of streams with confined, leaky, and...
The Sparta aquifer in Arkansas' critical ground-water areas: Response of the aquifer to supplying future water needs
Phillip D. Hays, D. Todd Fugitt
1999, Water-Resources Investigations Report 99-4075
The Sparta aquifer is a confined aquifer of great regional importance that comprises a sequence of unconsolidated sand, silt, and clay units extending across much of eastern and southeastern Arkansas and into adjoining States. Water use from the aquifer has doubled since 1975 and continues to increase, and large water-level...
Hydrogeology and water quality of the upper Floridan aquifer, western Albany area, Georgia
Lisa M. Stewart, Debbie Warner, Barbara J. Dawson
1999, Water-Resources Investigations Report 99-4140
Geologic, hydrologic, and water-quality data were collected to refine the hydrogeologic framework conceptual model of the Upper Floridan aquifer, and to qualitatively evaluate the potential of human activities to impact water quality in the Upper Floridan aquifer in the western Albany area, Georgia. Ground-water age dating was conducted by using...
Water-quality assessment of the New England coastal basins in Maine, Massachusetts, New Hampshire, and Rhode Island: Environmental settings and implications for water quality and aquatic biota
Sarah M. Flanagan, Martha G. Nielsen, Keith W. Robinson, James F. Coles
1999, Water-Resources Investigations Report 98-4249
The New England Coastal Basins in Maine, Massachusetts, New Hampshire, and Rhode Island constitute one of 59 study units selected for water-quality assessment as part of the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) program. England Coastal Basins study unit encompasses the fresh surface waters and ground waters in a...
Analysis of water-level data and ground-water flow modeling at Fort Riley, Kansas
N. C. Myers, P.J. Finnegan, J.D. Breedlove
1999, Water-Resources Investigations Report 99-4115
Use of environmental tracers to evaluate ground-water age and water-quality trends in a buried-valley aquifer, Dayton area, southwestern Ohio
Gary L. Rowe, Stephanie Dunkle Shapiro, Peter Schlosser
1999, Water-Resources Investigations Report 99-4113
Chlorofluorocarbons (CFC method) and tritium and helium isotopes (3H-3He method) were used as environmental tracers to estimate ground-water age in conjunction with efforts to develop a regional ground-water flow model of the buried-valley aquifer in the Dayton area, southwestern Ohio. This report describes results of CFC and water-quality sampling, summarizes...
Surface-water-quality assessment of the Yakima River basin, Washington: Overview of major findings, 1987-91
Jennifer L. Morace, Gregory J. Fuhrer, Joseph F. Rinella, Stuart W. McKenzie, Marshall W. Gannett, Karen L. Bramblett, Ted R. Pogue Jr., Kenneth A. Skach, Sandra S. Embrey, Thomas F. Cuffney, Michael R. Meador, Stephen D. Porter, Martin E. Gurtz
1999, Water-Resources Investigations Report 98-4113
Surface-water-quality conditions were assessed in the Yakima River Basin, which drains 6,155 square miles of mostly forested, range, and agricultural land in Washington. The Yakima River Basin is one of the most intensively farmed and irrigated areas in the United States, and is often referred to as the “Nation’s Fruitbowl.”...
Hydrogeologic, geophysical, water-quality, transient-tracer, and flow-model analysis of the ground-water flow system near Dillon, Montana
Daryll A. Pope, David W. Clark, Stephanie Dunkle Shapiro, Sean M. Lawlor
1999, Water-Resources Investigations Report 98-4250
No abstract available....
Precipitation-runoff, suspended-sediment, and flood-frequency characteristics for urbanized areas of Elmendorf Air Force Base, Alaska
Timothy P. Brabets
1999, Water-Resources Investigations Report 98-4265
The developed part of Elmendorf Air Force Base near Anchorage, Alaska, consists of two basins with drainage areas of 4.0 and 0.64 square miles, respectively. Runoff and suspended-sediment data were collected from August 1996 to March 1998 to gain a basic understanding of the surface-water hydrology of these areas and...
Precipitation, atmospheric deposition, streamflow, and water-quality data from selected sites in the city of Charlotte and Mecklenburg County, North Carolina, 1997–98
Kathleen M. Sarver, W. F. Hazell, J. B. Robinson
1999, Open-File Report 99-273
Precipitation data were collected at 46 precipitation sites and 3 atmospheric deposition sites, and hydrologic data were collected at 6 stream sites in the vicinity of Charlotte and Mecklenburg County, North Carolina, from July 1997 through September 1998. Data were collected to identify the type, concentration, and amount of nonpoint-source...
Water Budget of East Maui, Hawaii
Patricia J. Shade
1999, Water-Resources Investigations Report 98-4159
Ground-water recharge is estimated from six monthly water budgets calculated using long-term average rainfall and streamflow data, estimated pan-evaporation and fog-drip data, and soil characteristics. The water-budget components are defined seasonally, through the use of monthly data, and spatially by broad climatic and geohydrologic areas, through the use of a...
A total petroleum system of the Browse Basin, Australia; Late Jurassic, Early Cretaceous-Mesozoic
M.G. Bishop
1999, Open-File Report 99-50-I
The Browse Basin Province 3913, offshore northern Australia, contains one important petroleum system, Late Jurassic, Early Cretaceous-Mesozoic. It is comprised of Late Jurassic through Early Cretaceous source rocks deposited in restricted marine environments and various Mesozoic reservoir rocks deposited in deep-water fan to fluvial settings. Jurassic age intraformational shales and...
The potential for saltwater intrusion in the Potomac aquifers of the York-James Peninsula, Virginia
Barry S. Smith
1999, Water-Resources Investigations Report 98-4187
The most productive aquifers of the Virginia Coastal Plain are in the Potomac Formation. Water supplies in the Potomac aquifers are impaired, however, by saltwater in some areas. A two-dimensional, densitydependent, solute-transport model was used to investigate saltwater movement in the Potomac aquifers and the potential for saltwater intrusion or...
Simulation of freshwater-saltwater interfaces in the Brooklyn-Queens aquifer system, Long Island, New York
Angelo L. Kontis
1999, Water-Resources Investigations Report 98-4067
The seaward limit of the fresh ground-water system underlying Kings and Queens Counties on Long Island, N.Y., is at the freshwater-saltwater transition zone. This zone has been conceptualized in transient-state, three-dimensional models of the aquifer system as a sharp interface between freshwater and saltwater, and represented as a stationary, zero...
Relation of water quality to land use in the drainage basins of four tributaries to the Toms River, New Jersey, 1994-95
Kathryn Hunchak-Kariouk
1999, Water-Resources Investigations Report 99-4001
The influence of land use on the water quality of four tributaries to the Toms River, which drains nearly one-half of the Barnegat Bay wateshed, was studied during the initial phase of a multiyear investigation. Water samples were collected from and streamflows were measured in Long Swamp Creek, Wrangel Brook,...
Case study for delineating a contributing area to a water-supply well in a fractured crystalline-bedrock aquifer, Stewartstown, Pennsylvania
Gary J. Barton, Dennis W. Risser, Daniel G. Galeone, Randall W. Conger
1999, Water-Resources Investigations Report 99-4047
The Trouts Lane well field in Stewartstown, Pa., was selected as a case study for delineating a contributing area in a fractured crystalline-bedrock aquifer. The study emphasized the importance of refining the understanding of boundary conditions and major heterogeneities that affect ground-water movement to the supply well by conducting (1)...
Relation of fish community composition to environmental and land use factors in part of the Upper Mississippi River Basin, 1995-97
R. M. Goldstein, K. E. Lee, P. J. Talmage, J. C. Stauffer, J. P. Anderson
1999, Water-Resources Investigations Report 99-4034
Fish communities in the Upper Mississippi River Basin have been affected by changing environmental and land-use factors. Fish communities in small streams in agricultural and urban basins were compared to the fish community in a relatively undisturbed forested basin. In small streams, nutrient inputs from fertilizer, habitat modification from channelization,...
Water resources of the Batavia Kill basin at Windham, Greene County, New York
Paul M. Heisig
1999, Water-Resources Investigations Report 98-4036
The water resources of a 27.6-square-mile section of the Batavia Kill Basin near the village of Windham, N.Y., which has undergone substantial development, were evaluated. The evaluation entailed (1) estimation of the magnitude and distribution of several hydrologic components, including recharge, (2) measurement of discharge and chemical quality of the...
Simulations of the effects of U.S. Highway 231 and the proposed Montgomery outer loop on flooding in the Catoma Creek and Little Catoma Creek Basins near Montgomery, Alabama
T. Scott Hedgecock
1999, Water-Resources Investigations Report 99-4040-A
A two-dimensional finite-element surface-water model was used to study the effects of U.S. Highway 231 and the proposed Montgomery Outer Loop on the water-surface elevations and flow distributions during flooding in the Catoma Creek and Little Catoma Creek Basins southeast of Montgomery, Montgomery County, Alabama. The effects of flooding were...
Probability analysis of the relation of salinity to freshwater discharge in the St. Sebastian River, Florida
S.M. Wicklein, W. S. Gain
1999, Water-Resources Investigations Report 99-4003
The St. Sebastian River lies in the southern part of the Indian River basin on the east coast of Florida. Increases in freshwater discharge due to urbanization and changes in land use have reduced salinity in the St. Sebastian River and, consequently, salinity in the Indian River, affecting the commercial...
