The relation between hydrogeology and water quality of the Lower Floridan Aquifer in Duval County, Florida, and implications for monitoring movement of saline water
G. G. Phelps, R. M. Spechler
1997, Water-Resources Investigations Report 96-4242
The hydrogeology of the Upper zone of the Lower Floridan aquifer and its relation to water quality were evaluated during a 3-year (1993-96) study. The Floridan aquifer system, a carbonate aquifer system composed of the Upper Floridan aquifer, a middle semi-confining unit, and the Lower Floridan aquifer, is the major...
Metal speciation in the Upper Arkansas River, Colorado, 1990-93
M. L. Clark, M.E. Lewis
1997, Water-Resources Investigations Report 96-4282
Computation of the time-varying flow rate from an artesian well in central Dade County, Florida, by analytical and numerical simulation methods
Michael L. Merritt
1997, Water Supply Paper 2491
Simulation modeling techniques can by used advantageously in estimating artesian flow rates of wells in the upper Floridan Aquifer or for estimating transmissivity based in measured flow rates. The generalized aquifer model was useful in testing conceptual models of the relation between the various aquifers and confining layers beneath the...
Equations for estimating synthetic unit-hydrograph parameter values for small watersheds in Lake County, Illinois
Charles S. Melching, J.S. Marquardt
1997, Open-File Report 96-474
Design hydrographs computed from design storms, simple models of abstractions (interception, depression storage, and infiltration), and synthetic unit hydrographs provide vital information for stormwater, flood-plain, and water-resources management throughout the United States. Rainfall and runoff data for small watersheds in Lake County collected between 1990 and 1995 were studied to...
Field screening of water quality, bottom sediment, and biota associated with the Emery and Scofield project areas, Central Utah, 1994
D. W. Stephens, Bruce Waddell, Kristi DuBois, E. M. Peterson
1997, Water-Resources Investigations Report 96-4298
No abstract available....
Nutrient and trace-element enrichment of Coeur d'Alene Lake, Idaho
Paul F. Woods, Michael A. Beckwith
1997, Water Supply Paper 2485
The limnological characteristics and geochemistry of lakebed sediments in Coeur d'Alene Lake were assessed during 1991-92 because of the possible interaction of nutrient enrichment with the highly enriched trace-element concentrations stored in the lakebed. The scope included characterization of physical, chemical, and biological variables; quantification of hydrologic, nutrient, and trace-element...
The southern California network bulletin, January-December 1996
L. A. Wald, J.J. Mori, D.J. Wald
1997, Open-File Report 97-133
Water-quality trends in the Rio Grande/Rio Bravo Basin using sediment cores from reservoirs
Peter C. Van Metre, B.J. Mahler, Edward C. Callender
1997, Fact Sheet 221-96
Water-quality trends reflect the relation between water quality and human activities, chronicling changes in concentrations of environmental contaminants, introduction of new contaminants, and successful efforts in environmental pollution remediation. Historical data available for analyzing trends often have severe limitations, from questionable accuracy to unknown sampling and analytic methodologies. Where data...
Zeolites and selected other hydrothermal minerals in the Cascade Mountains of northern Oregon
K.E. Bargar, R.L. Oscarson
1997, Open-File Report 97-100
Simulation of selected river diversion operations in the upper Carson River Basin, California and Nevada
Glen W. Hess
1997, Fact Sheet 240-96
Source, transport, and partitioning of metals between water, colloids, and bed sediments of the Animas River, Colorado
S. E. Church, B. A. Kimball, D.L. Fey, D.A. Ferderer, T. J. Yager, R. B. Vaughn
1997, Open-File Report 97-151
No abstract available....
Electrical resistivity survey in the Cornudas Mountains area, Otero County, New Mexico
D. P. Klein, B. D. Rodriguez
1997, Open-File Report 97-149
Estimated ground-water discharge by evapotranspiration, Ash Meadows area, Nye County, Nevada, 1994
W. D. Nichols, R. J. Laczniak, G. A. De Meo, T.R. Rapp
1997, Water-Resources Investigations Report 97-4025
Construction and geologic log of the South Wailua monitor well (State well 2-0121-01), Lihue, Kauai, Hawaii
S. K. Izuka, S. B. Gingerich
1997, Open-File Report 97-38
Nutrients and pesticides in ground water of the Ozark Plateaus in Arkansas, Kansas, Missouri, and Oklahoma
James C. Adamski
1997, Water-Resources Investigations Report 96-4313
A total of 229 ground-water samples were collected from 215 sites as part of the Ozark Plateaus study unit of the National Water-Quality Assessment Program. These samples were collected from 1993 through 1995 using a network of springs and wells with three scale-dependent components. The first component, the study-unit survey,...
Aeromagnetic and gravity anomaly maps of the southwestern Nevada volcanic field, Nevada and California
A. E. McCafferty, V.J. Grauch
1997, Geophysical Investigations Map 1015
Geohydrology and water quality of stratified drift aquifers in the Upper Merrimack River Basin, south-central New Hampshire
P. J. Stekl, S. M. Flanagan
1997, Water-Resources Investigations Report 95-4123
No abstract available....
Satellite image map N.W. Frontier, Pakistan
Water Resources Division, U.S. Geological Survey
1997, IMAP 2587-B
Rapid-Estimation Method for Assessing Scour at Highway Bridges Based on Limited Site Data
Stephen R. Holnbeck, Charles Parrett
1997, Fact Sheet 244-96
Summary of the Puget-Willamette Lowland regional aquifer-system analysis, Washington, Oregon, and British Columbia
J. J. Vaccaro, D. G. Woodward, M. W. Gannett, M. A. Jones, C. A. Collins, R. R. Caldwell, A. J. Hansen
1997, Open-File Report 96-353
No abstract available....
Pesticides in surface waters of the Hudson River Basin, New York and adjacent states
Gary R. Wall, Patrick J. Phillips
1997, Fact Sheet 238-96
Investigation of the causes of sinks in the San Xavier District, Tohono O'odham Nation, Pima County, Arizona
John P. Hoffmann, Donald R. Pool, A.D. Konieczki, Michael C. Carpenter
1997, Open-File Report 97-19
Satellite image map Punjab, Pakistan
Water Resources Division, U.S. Geological Survey
1997, IMAP 2587-F
Satellite image map S.W. Balochistan, Pakistan
Water Resources Division, U.S. Geological Survey
1997, IMAP 2587-G
Water-quality assessment of the Rio Grande Valley, Colorado, New Mexico and Texas: Ground-water quality in the Rio Grande flood plain, Cochiti Lake, New Mexico, to El Paso, Texas, 1995
L. M. Bexfield, S. K. Anderholm
1997, Water-Resources Investigations Report 96-4249
From March to May of 1995, water samples were collected from 30 wells located in the flood plain of the Rio Grande between Cochiti Lake, New Mexico, and El Paso, Texas. These samples were analyzed for a broad host of constituents, including field parameters, major constituents, nutrients, dissolved organic carbon,...
