Geologic map of the Corona South 7.5' quadrangle, Riverside and Orange counties, California
C. H. Gray Jr., Douglas M. Morton, F. Harold Weber Jr., Kelly R. Bovard, Timothy O'Brien
2002, Open-File Report 2002-21
Open-File Report 01-021 contains a digital geologic map database of the Corona South 7.5’ quadrangle, Riverside County, California that includes: 1. ARC/INFO (Environmental Systems Research Institute, http://www.esri.com) version 7.2.1 coverages of the various elements of the geologic map. 2. A Postscript file to plot the geologic map on a topographic base, and...
Arsenic in rocks and stream sediments of the central Appalachian Basin, Kentucky
Michele L.W. Tuttle, Martin B. Goldhaber, Leslie F. Ruppert, James C. Hower
2002, Open-File Report 2002-28
Arsenic (As) enrichment in coal and stream sediments has been documented in the southern Appalachian basin (see Goldhaber and others, submitted) and is attributed to interaction of rocks and coal with metamorphic fluids generated during the Allegheny Orogeny (late Paleozoic). Similarly derived fluids are expected to affect the coal and...
Historical trends in U.S. mineral statistics for selected non-ferrous metals
David Z. Piper, Warren J. Nokleberg
2002, Open-File Report 2002-29
Production figures for selected nonferrous metals-aluminum (including bauxite and alumina), copper, lead, tin, titanium, and zinc-by the United States, as well as other statistics for these commodities, show strong volatility during 20th century. Major shifts were driven by the Great Depression and the two World Wars, but other major temporal...
Surface-water quality-assurance plan for the Wisconsin district of the U. S. Geological Survey, Water Resources Division
H.S. Garn
2002, Open-File Report 2002-30
This surface-water quality-assurance plan documents the standards, policies, and procedures used by the Wisconsin District of the U.S. Geological Survey, Water Resources Division, for activities related to the collection, processing, storage, analysis, management, and publication of surface-water data. The roles and responsibilities of District personnel in following these policies and...
Shear-wave velocity compilation for Northridge strong-motion recording sites
Roger D. Borcherdt, Thomas E. Fumal
2002, Open-File Report 2002-107
Borehole and other geotechnical information collected at the strong-motion recording sites of the Northridge earthquake of January 17, 1994 provide an important new basis for the characterization of local site conditions. These geotechnical data, when combined with analysis of strong-motion recordings, provide an empirical basis to evaluate site coefficients used...
Processing and interpretation of aeromagnetic data for the Santa Cruz Basin–Patagonia Mountains area, south-central Arizona
Jeffrey D. Phillips
2002, Open-File Report 2002-98
In 1997, the U.S. Geological Survey (USGS) contracted with Sial Geosciences Inc. for a detailed aeromagnetic survey of the Santa Cruz basin and Patagonia Mountains area of south-central Arizona. The contractor's Operational Report is included as an Appendix in this report. This section describes the data processing performed by the...
Principal facts for 463 gravity stations in the vicinity of Tangle Lakes, east-central Alaska
Robert L. Morin, Jonathan M. G. Glen
2002, Open-File Report 2002-96
During the summer of 2001, a gravity survey was conducted in the vicinity of Tangle Lakes, east-central Alaska. Measurements of 87 gravity stations were made. The Tangle Lakes area is located about 25 km west of Paxson and north of the Denali Highway. The gravity survey is located on the...
Preliminary United States-Mexico border watershed analysis, twin cities area of Nogales, Arizona and Nogales, Sonora
Laura Margaret Brady, Floyd Gray, Mario Castaneda, Mark Bultman, Karen Sue Bolm
2002, Open-File Report 2002-112
The United States - Mexico border area faces the challenge of integrating aspects of its binational physical boundaries to form a unified or, at least, compatible natural resource management plan. Specified geospatial components such as stream drainages, mineral occurrences, vegetation, wildlife, and land-use can be analyzed in terms of their...
Coalbed methane production in the Appalachian Basin
R. C. Milici
2002, Open-File Report 2002-105
A logistic regression equation for estimating the probability of a stream flowing perennially in Massachusetts
Gardner C. Bent, Stacey A. Archfield
2002, Water-Resources Investigations Report 2002-4043
A logistic regression equation was developed for estimating the probability of a stream flowing perennially at a specific site in Massachusetts. The equation provides city and town conservation commissions and the Massachusetts Department of Environmental Protection with an additional method for assessing whether streams are perennial or intermittent at a...
Simulation of ground-water flow and potential contaminant transport at Area 6 Landfill, Naval Air Station Whidbey Island, Island County, Washington
F. William Simonds
2002, Water-Resources Investigations Report 2001-4252
A three-dimensional finite-difference steady-state ground-water flow model was developed to simulate hydraulic conditions at the Area 6 Landfill, Naval Air Station Whidbey Island, near Oak Harbor, Washington. Remediation efforts were started in 1995 in an attempt to contain trichloroethene and other contaminants in the ground water. The model was developed...
Translocations of amphibians: Proven management method or experimental technique
Richard A. Seigel, C. Kenneth Dodd Jr.
2002, Conservation Biology (16) 552-554
In an otherwise excellent review of metapopulation dynamics in amphibians, Marsh and Trenham (2001) make the following provocative statements (emphasis added): If isolation effects occur primarily in highly disturbed habitats, species translocations may be necessary to promote local and regional population persistence. Because most...
Inventory of Neoproterozoic and Paleozoic strata in Sonora, Mexico
John H. Stewart, Forrest G. Poole
2002, Open-File Report 2002-97
This compilation is an inventory of all known outcrops of Neoproterozoic and Paleozoic strata in Sonora, Mexico. We have not attempted an interpretation of the regional stratigraphic or structural setting of the strata. Brief summaries of the stratigraphic setting of the Sonora rocks are given in Poole and Hayes (1971),...
Simulation of a proposed emergency outlet from Devils Lake, North Dakota
Aldo V. Vecchia
2002, Water-Resources Investigations Report 2002-4042
From 1993 to 2001, Devils Lake rose more than 25 feet, flooding farmland, roads, and structures around the lake and causing more than $400 million in damages in the Devils Lake Basin. In July 2001, the level of Devils Lake was at 1,448.0 feet above sea level1, which was...
Hydrostructural maps of the Death Valley regional flow system, Nevada and California
C. J. Potter, D. S. Sweetkind, R. P. Dickerson, M.L. Killgore
2002, Miscellaneous Field Studies Map 2372
The locations of principal faults and structural zones that may influence ground-water flow were compiled in support of a three-dimensional ground-water model for the Death Valley regional flow system (DVRFS), which covers 80,000 square km in southwestern Nevada and southeastern California. Faults include Neogene extensional and strike-slip faults and...
Generalized geologic map of part of the upper Animas River watershed and vicinity, Silverton, Colorado
D.B. Yager, D. J. Bove
2002, Miscellaneous Field Studies Map 2377
This dataset represents geology compiled for the upper Animas River Watershed near Silverton, Colorado. The source data used are derived from 1:24,000, 1:20,000, 1:48,000 and 1:250,000-scale geologic maps by geologists who have worked in this area since the early 1960's....
User's guide to SEAWAT; a computer program for simulation of three-dimensional variable-density ground-water flow
Weixing Guo, C.D. Langevin
2002, Open-File Report 2001-434
This report has been superceded by TWRI Book 6, Chapter A7...
Alaska resource data file: Lime Hills quadrangle
T. L. Hudson, M.A. Millholland
2002, Open-File Report 2002-76
No abstract available....
Geologic interpretation of aeromagnetic maps in the Santa Cruz basin: Patagonia Mountains area, south-central Arizona
V. L. Rystrom, C. A. Finn, Trude V. V. King
2002, Open-File Report 2002-100
High resolution aeromagnetic data for the Santa Cruz basin - Patagonia Mountains region of south-central Arizona (USGS, 2000) can be combined with geologic mapped regions to reconfirm known geologic features, extend known features, and suggest new possibilities. These include mapping of lava flows, mapping of igneous intrusions, mapping of faults,...
Characteristics of shallow deposits beneath Rillito Creek, Pima County, Arizona
John P. Hoffmann, Marcella A. Ripich, Kevin M. Ellett
2002, Water-Resources Investigations Report 2001-4257
Characteristics of the stream-channel and basin-fill deposits beneath a 12-mile reach of Rillito Creek, Pima County, Arizona, were obtained to describe the geohydrologic system. The findings presented here are part of a larger project to improve the understanding of recharge processes beneath ephemeral streams. The stream-channel deposits, which range in thickness...
GRA prospectus; optimizing protected areas for conservation, September 2001
David Halsing, Richard Bernknopf
2002, Open-File Report 2002-67
Chemical evolution of the Salton Sea, California: Nutrient and selenium dynamics
Roy A. Schroeder, William H. Orem, Yousif K. Kharaka
2002, Hydrobiologia (473) 23-45
The Salton Sea is a 1000-km2 terminal lake located in the desert area of southeastern California. This saline (∼44 000 mg l−1 dissolved solids) lake started as fresh water in 1905–07 by accidental flooding of the Colorado River, and it is maintained by agricultural runoff of irrigation water diverted from the...
U.S. coral reefs; imperiled national treasures
M.E. Field, S.A. Cochran, K.R. Evans
2002, Fact Sheet 025-02
Coral reefs are home to 25% of all marine species. However, the tiny colonial animals that build these intricate limestone masses are dying at alarming rates. If this trend continues, in 20 years the living corals on many of the world's reefs will be dead and the ecosystems that depend...
Hydrogeochemical investigations of historic mining districts, central western slope of Colorado, including influence on surface-water quality
J. Thomas Nash
2002, Data Series 73
This report describes reconnaissance hydrogeochemical investigations of 22 mining districts on the Western Slope of Colorado in the Gunnison and Uncompahgre National Forests and adjacent public lands administered by the Bureau of Land Management. Sources and fates of contaminants from historic mines, mine waste, and mill tailings are interpreted from...
Pesticides in surface water of the Yakima River basin, Washington, 1999–2000 — Their occurrence and an assessment of factors affecting concentrations and loads
James C. Ebbert, Sandra S. Embrey
2002, Water-Resources Investigations Report 2001-4211
The occurrence, distribution, and transport of pesticides in surface water of the Yakima River Basin were assessed using data collected during 19992000 as part of the U.S. Geological Survey National Water-Quality Assessment (NAWQA) Program. Samples were collected at 34 sites located throughout the basin in August 1999 using a Lagrangian...
