Depth profiles of temperature, specific conductance and oxygen concentration in Lake Powell, Arizona-Utah, 1992-95
G. Richard Marzolf, Robert J. Hart, Doyle W. Stephens
1998, Open-File Report 97-835
The depth distribution of temperature in lakes and reservoirs establishes vertical-density gradients that regulate the distribution of a wide array of chemical and biological features. In Lake Powell, the depth at which inflowing river water enters the reservoir is controlled by the water temperature of the river compared to the...
Interactive display of geologic features and hazards of the Mono Basin; Long Valley region, California
S.A. Silverman
1998, Open-File Report 97-458
Issues in using liquefaction features for paleoseismic analysis
S. F. Obermeier, E.C. Pond
1998, Open-File Report 98-28
Surface-water quality data, Permanente and Saratoga Creeks, Santa Clara Valley, California, water year 1997
S.H. Myhre, K.E. Bencala
1998, Open-File Report 98-4
No abstract available....
Availability and suitability of data from public water-supplier sources for use in water-quality assessments
K. W. Robinson, M.A. Horn
1998, Open-File Report 97-825
The 1995 National Assessment of United States Oil and Gas Resources: The Economic Component
Water Resources Division, U.S. Geological Survey
1998, Fact Sheet 024-98
Bedrock geologic map of the central block area, Yucca Mountain, Nye County, Nevada
W. C. Day, C. J. Potter, D. S. Sweetkind, R. P. Dickerson, C. A. San Juan
1998, IMAP 2601
Geochemistry of the northern Atlantic Coastal Plain aquifer system
L.L. Knobel, F. H. Chapelle, Harold Meisler
1998, Professional Paper 1404-L
Sediments of the northern Atlantic Coastal Plain comprise a complex multiaquifer flow system. On a large scale (greater than 500 square miles) ground water in this system evolves from predominantly calcium magnesium bicarbonate water with a low dissolved-solids content and low pH, near outcrop-recharge areas, to predominantly sodium bicarbonate water...
Descriptions of selected digital spatial data for Ravenna Army Ammunition Plant, Ohio
C. W. Schalk, R.A. Darner
1998, Open-File Report 97-802
Digital spatial data of Ravenna Army Ammunition Plant (RVAAP), in northeastern Ohio, were compiled or generated from existing maps for U.S. Army Industrial Operations Command. The data are in the Ohio north state-plane coordinate system (North American Datum of 1983) in an ARC/INFO geographic information system format. The data comprise...
Spatial distribution of stream velocities for the Kootenai River near Bonners Ferry, Idaho, June 1997
S. W. Lipscomb, Charles Berenbrock, J.D. Doyle
1998, Open-File Report 97-830
Spatial variation in hydraulic conductivity determined by slug tests in the Canadian River alluvium near the Norman Landfill, Norman, Oklahoma
Martha A. Scholl, Scott C. Christenson
1998, Water-Resources Investigations Report 97-4292
Slug tests were used to characterize hydraulic conductivity variations at a spatial scale on the order of meters in the alluvial aquifer downgradient of the Norman Landfill. Forty hydraulic conductivity measurements were made, most along a 215-meter flow path transect. Measured hydraulic conductivity, excluding clayey layers, ranged from 8.4 x...
Comparing shear-wave velocity profiles from inversion of surface-wave phase velocities with downhole measurements: Systematic differences between the CXW method and downhole measurements at six USC strong-motion sites
David M. Boore, Leo T. Brown
1998, Seismological Research Letters (69) 222-229
No abstract available....
Evaluation of generalized habitat criteria for assessing impacts of altered flow regimes on warmwater fishes
Z.H. Bowen, Mary C. Freeman, K.D. Bovee
1998, Transactions of the American Fisheries Society (127) 455-468
Assessing potential effects of flow regulation on southeastern warmwater fish assemblages is problematic because of high species richness and poor knowledge of habitat requirements for most species. Our study investigated relationships between availability and temporal persistence of key habitats and fish assemblage structure at regulated and unregulated...
Ground-water levels and flow directions in the buried valley aquifer around Dayton, Ohio, September 1993
Denise H. Dumouchelle
1998, Water-Resources Investigations Report 97-4255
No abstract available....
1995 national oil and gas assessment and onshore federal lands
Donald L. Gautier, Gordon Dolton, Emil Attanasi
1998, Open-File Report 95-75-N
This report summarizes estimated volumes of oil and gas in undiscovered conventional and continuous-type accumulations that occur on onshore Federal Lands. The basis of these estimates is the U.S. Geological Survey's 1995 National Assessment of oil and gas resources (Gautier and others, 1996). Onshore Federal Lands account for about 29...
Geologic map of the Bartlett Mountain Quadrangle, Pima and Santa Cruz counties, Arizona
Harald Drewes
1998, IMAP 2624
Faulting parameters of the January 16, 1994 Wyomissing Hills, Pennsylvania earthquakes
C.J. Ammon, Robert B. Herrmann, C.A. Langston, H. Benz
1998, Seismological Research Letters (69) 261-269
Two events dominated the January 1994, Wyomissing, PA earthquake sequence, an Mw 4.0 foreshock, followed by an Mw 4.6 mainshock. We modeled regional waveforms to estimate the event depth and the moment tensors for the two largest events in the sequence, and examine teleseismic waveforms recorded on the ARCESS short-period seismic array to estimate...
Evidence for large prehistoric earthquakes in the northern New Madrid seismic zone, central United States
Y. Li, E.S. Schweig, M.P. Tuttle, M.A. Ellis
1998, Seismological Research Letters (69) 270-276
We surveyed the area north of New Madrid, Missouri, for prehistoric liquefaction deposits and uncovered two new sites with evidence of pre-1811 earthquakes. At one site, located about 20 km northeast of New Madrid, Missouri, radiocarbon dating indicates that an upper sand blow was probably deposited after A.D. 1510 and...
Leucocytozoon simondi in Emperor Geese from the Yukon-Kuskokwim Delta in Alaska
Tuula E. Hollmen, J. Christian Franson, Lynn H. Creekmore, Joel A. Schmutz, Ada C. Fowler
1998, Condor (100) 402-404
We surveyed Emperor Geese (Chen canagica) in western Alaska for avian hematozoa. Blood smears were collected from 134 adults and goslings in late July 1996, on their breeding grounds on the Yukon-Kuskokwim Delta. One of 134 (0.7%) Emperor Geese harbored Leucocytozoon simondi, representing a new host record for this parasite. No...
Paleoseismic investigations of Stagecoach Road Fault, southeastern Yucca Mountain, Nye County, Nevada
C.M. Menges, J.A. Oswald, J. A. Coe, S.C. Lundstrom, J.B. Paces, S. A. Mahan, Beth Widmann, Michele Murray
1998, Open-File Report 96-417
Bedrock geology of the Paducah 1° x 2° CUSMAP quadrangle, Illinois, Indiana, Kentucky, and Missouri
W. John Nelson
1998, Bulletin 2150-B
The Paducah 1° x 2° quadrangle (hereafter referred to as the Paducah quadrangle) encompasses the eastern flank of the Ozark dome, the southern end of the Illinois Basin, and the northern end of the Mississippi Embayment. Resting on Proterozoic basement, sedimentary rocks of Cambrian through Permian age in the Illinois...
Estimating areas contributing recharge to wells, lessons from previous studies
O. Lehn Franke, T. E. Reilly, D.W. Pollock, J. W. LaBaugh
1998, Circular 1174
Factors relating to the estimation of areas contributing recharge to wells, such as complexity of the ground-water flow system, effects of changing hydrologic conditions, and effects of well-screen locations and pumping rates, are reviewed. The point of view that simulation is the best means to obtain physically based estimates of...
Hydrogeologic framework of the Michigan Basin regional aquifer system
David B. Westjohn, T. L. Weaver
1998, Professional Paper 1418
Mississippian and younger geologic units form a regional system of aquifers and confining units in the central Lower Peninsula of Michigan. The area of the regional aquifer system is about 22,000 square miles. The aquifer system consists of three bedrock aquifers, which are separated by confining units. Bedrock aquifers and...
Inexpensive automated paging system for use at remote research sites
S.L. Sargent, W.S. Dey, D.A. Keefer
1998, Soil Science Society of America Journal (62) 600-601
The use of a flow-activated automatic sampler at a remote research site required personnel to periodically visit the site to collect samples and reset the automatic sampler. To reduce site visits, a cellular telephone was modified for activation by a datalogger. The purpose of this study was to demonstrate the...
Marine geologic map of the northeastern insular shelf of Puerto Rico-Luquillo area
R. W. Rodriguez, W. C. Schwab, Milton Carlo, E.R. Thieler
1998, IMAP 2612
No abstract available....
