Water quality assessment of Maumelle and Winona reservoir systems, central Arkansas, May 1989-October 1992
W. Reed Green
1994, Water-Resources Investigations Report 93-4218
Water quality of the Maumelle and Winona water supply reservoir systems in central Arkansas, was assessed on the basis of the data collected from May 1989 through October 1992. Water quality relative to: (1) suitability for municipal water supply; (2) other streams and reservoirs within the region; and for the...
Late Quaternary normal faulting of the Hat Creek basalt, northern California
L.I.P. Muffler, M.A. Clynne, D.E. Champion
1994, Geological Society of America Bulletin (106) 195-200
The Hat Creek fault is a major, young, north-striking, normal fault along the western boundary of extensional Basin and Range deformation in the Lessen region of northeastern California. Volcanic rocks of Quaternary and late Pliocene age are displaced a total of >500 m...
Simulated circulation and transport in adjacent wind-driven estuaries in North Carolina
Jeanne C. Robbins, Jerad D. Bales
Spaulding Malcolm L.Bedford KeithBlumberg AlanCheng RalphSwanson Craig, editor(s)
1994, Conference Paper
The Pamlico and Neuse River estuaries, in North Carolina, display similar physical characteristics because of their proximity and physiographic setting. Yet, because of channel configuration and longitudinal alignment, differences in circulation and flushing exist. Spatially detailed hydrodynamic models were applied to each estuary to characterize these differences. The models were...
Leachate geochemistry at a municipal landfill, Memphis, Tennessee
June E. Mirecki, William S. Parks
1994, Groundwater (32) 390-398
A leachate plume emanating from the Shelby County Landfill located at Memphis, Tennessee is defined using selected major and trace inorganic constituents. High specific conductance values and elevated concentrations of ammonia, barium, boron, calcium, chloride, dissolved solids, potassium, sodium, and strontium were measured in water...
Gradation processes and channel evolution in modified West Tennessee streams; process, response, and form
Andrew Simon
1994, Professional Paper 1470
Modeling the seasonal circulation in Massachusetts Bay
Richard P. Signell, Harry L. Jenter, Alan F. Blumberg
Spaulding Malcolm L.Bedford KeithBlumberg AlanCheng RalphSwanson Craig, editor(s)
1994, Conference Paper
An 18 month simulation of circulation was conducted in Massachusetts Bay, a roughly 35 m deep, 100??50 km embayment on the northeastern shelf of the United States. Using a variant of the Blumberg-Mellor (1987) model, it was found that a continuous 18 month run was only possible if the velocity...
Nested-model approach to investigate climate change
Lauren E. Hay, George H. Leavesley
1994, Conference Paper, Proceedings of the 21st Annual Conference on Water Policy and
Determination of the spatial and temporal distribution of precipitation in mountainous regions is critical for assessing the effects of climate variability on water resources in these regions. Potential effects of climate change on water resources in the Gunnison River basin of southwestern Colorado currently are being studied using a nested-model...
Flood characteristics for the New River in the New River Gorge National River, West Virginia
J.B. Wiley, M.K. Cunningham
1994, Open-File Report 93-77
The frequency and magnitude of flooding of the New River in the New River Gorge National River was studied. A steady-state, one-dimensional flow model was applied to the study reach. Rating curves, cross sections, and Manning's roughness coefficients that were used are presented in this report. Manning's roughness coefficients were...
Documentation of Model Input and Output Values Used for Analyses of Simulated Development in Stagecoac Valley, Lyon and Storey Counties, Western Nevada
Anne E. Carey
1994, Open-File Report 92-630
A previously published Geological Survey report (Professional Paper 1409-H) describes ground-water flow and simulated development scenarios in Stagecoach Valley, Lyon and Storey Counties, Nevada. This study was done as part of the Survey's Great Basin Regional Aquifer-Systems Analysis program. Documentation of model input and output values used for analysis of...
A hydrogeochemical survey for mineralized breccia pipes: Data from springs, wells, and streams on the Hualapai Indian Reservation, northwestern Arizona
K. J. Wenrich, S. Q. Boundy, R. M. Aumente-Modreski, S. P. Schwarz, H. B. Sutphin, J.M. Been
1994, Open-File Report 93-619
No abstract available....
Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory-Determination of selected carbamate pesticides in water by high-performance liquid chromatography
S.L. Werner, S.M. Johnson
1994, Open-File Report 93-650
As part of its primary responsibility concerning water as a national resource, the U.S. Geological Survey collects and analyzes samples of ground water and surface water to determine water quality. This report describes the method used since June 1987 to determine selected total-recoverable carbamate pesticides present in water samples. High-...
Geomorphic response to channel modifications of Skuna River at the State Highway 9 crossing at Bruce, Calhoun County, Mississippi
K.V. Wilson Jr., D.P. Turnipseed
1994, Water-Resources Investigations Report 94-4000
Skuna River at State Highway 9 at Bruce, Calhoun County, Mississippi, has geomorphically responded to channel modifications by lowering of the channel bed through degradation, which heightened and steepened channel banks and induced widening. Skuna River Canal (Skuna River) has typically degraded about 16.5 feet and widened about 150 feet...
Grade and tonnage model of tungsten skarn deposits, Nevada
David A. John, James D. Bliss
1994, Open-File Report 94-5
No abstract available....
Historical and potential scour around bridge piers and abutments of selected stream crossings in Indiana
D. S. Mueller, R. L. Miller, J.T. Wilson
1994, Water-Resources Investigations Report 93-4066
Historical scour data were collected by means of geophysical techniques and used to evaluate the scour-computation procedures recommended by the U.S. Federal Highway Administration and 12 other pub- lished pier-scour equations. Geophysical data were collected at 10 bridges in Indiana. For this evaluation it was assumed that the historical scour...
A Model to help explain Sr-isotope disequilibrium between feldspar phenocrysts and melt in large-volume silicic magma systems
W. A. Duffield, Joaquin Ruiz
1994, Open-File Report 94-423
Ground-water discharge from the Coastal Plain of Virginia
D.L. Richardson
1994, Water-Resources Investigations Report 93-4191
The Chesapeake Bay and other important surface- water bodies receive ground water that discharges directly from the Coastal Plain of Virginia. This report presents estimates of the average annual ground-water discharge from the Coastal Plain of Virginia using two approaches. Average annual ground-water discharge from 16 gaged watersheds in the...
An interactive code (NETPATH) for modeling NET geochemical reactions along a flow PATH, version 2.0
Niel Plummer, Eric C. Prestemon, David L. Parkhurst
1994, Water-Resources Investigations Report 94-4169
NETPATH is an interactive Fortran 77 computer program used to interpret net geochemical mass-balance reactions between an initial and final water along a hydrologic flow path. Alternatively, NETPATH computes the mixing proportions of two to five initial waters and net geochemical reactions that can account for the observed composition of...
Terrestrial remote sensing science and algorithms planned for EOS/MODIS
S. W. Running, C.O. Justice, V.V. Salomonson, D. Hall, J. Barker, Y. J. Kaufmann, Alan H. Strahler, A.R. Huete, Jan-Peter Muller, V. Vanderbilt, Z. Wan, P. Teillet, David M. Geological Survey Ohlen Donald O. Carneggie Donald O.
1994, International Journal of Remote Sensing (15) 3587-3620
The Moderate Resolution Imaging Spectroradiometer (MODIS) will be the primary daily global monitoring sensor on the NASA Earth Observing System (EOS) satellites, scheduled for launch on the EOS-AM platform in June 1998 and the EOS-PM platform in December 2000. MODIS is a 36 channel radiometer covering 0·415-14·235 μm wavelengths, with...
Airborne remote sensing for geology and the environment; present and future
Ken Watson, Daniel H. Knepper, editor(s)
1994, Bulletin 1926
In 1988, a group of leading experts from government, academia, and industry attended a workshop on airborne remote sensing sponsored by the U.S. Geological Survey (USGS) and hosted by the Branch of Geophysics. The purpose of the workshop was to examine the scientific rationale for airborne remote sensing in support...
Designing global land cover databases to maximize utility—the US prototype
B. C. Reed, Thomas R. Loveland, L. T. Steyaert, Jesslyn F. Brown, J.W. Merchant, D.O. Ohlen
W.K. Michener, J.W. Brunt, S.G. Stafford, editor(s)
1994, Book chapter, Environmental information management and analysis—ecosystem to global scales
One of the most pressing problems in global climate and ecosystem studies is a lack of adequate land cover data. Staff from the United States Geological Survey's EROS Data Center and the University of Nebraska have developed a United States prototype for a proposed global land cover characteristics database derived...
Using wildlife habitat models for land use planning for Yosemite Valley
L.S. Chow, J. W. van Wagtendonk, S. Thompson, K. McCurdy
1994, Transactions of the Western Section of the Wildlife Society (30) 49-55
No abstract available at this time...
Geographic modeling of food production from rainfed agriculture—Senegal case study
D. G. Moore, G.G. Tappan, Stephen M. Howard, R.W. Lietzow, C.A. Nadeau, W. Renison, J. Olsson
1994, Book chapter, Environmental information management and analysis—ecosystem to global scales
No abstract available....
Precambrian zircons from the Florida basement: A Gondwanan connection
Paul A. Mueller, Ann L. Heatherington, Joseph L. Wooden, Robert D. Shuster, Allen P. Nutman, Ian S. Williams
1994, Geology (22) 119-122
A Gondwanan origin for the pre-Cretaceous basement of Florida is suggested by U- Pb ages of 515 to 2860 Ma for single zircons separated from subsurface samples of lower Paleozoic sandstone of the Suwannee basin (Alachua County, Florida) and Neoproterozoic Osceola granite (Osceola...
Uranium(VI) adsorption to ferrihydrite: Application of a surface complexation model
T.D. Waite, J.A. Davis, T.E. Payne, G.A. Waychunas, N. Xu
1994, Geochimica et Cosmochimica Acta (58) 5465-5478
A study of U(VI) adsorption by ferrihydrite was conducted over a wide range of U(VI) concentrations, pH, and at two partial pressures of carbon dioxide. A two-site (strong- and weak-affinity sites, FesOH and FewOH, respectively) surface complexation model was able to describe the experimental data well over a wide range...
Fine structure of the landers fault zone: Segmentation and the rupture process
Y.-G. Li, J.E. Vidale, K. Aki, C.J. Marone, W.H.K. Lee
1994, Science (265) 367-370
Observations and modeling of 3- to 6-hertz seismic shear waves trapped within the fault zone of the 1992 Landers earthquake series allow the fine structure and continuity of the zone to be evaluated. The fault, to a depth of at least 12 kilometers, is marked by a zone 100 to...
