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Not all publications have extents, not all extents are completely accurate
Surface Fractures Formed in the Potrero Canyon, Tapo Canyon, and McBean Parkway Areas in Association with the 1994 Northridge, California Earthquake
Michael J. Rymer, Jerome A. Treiman, Thomas J. Powers, Thomas E. Fumal, David P. Schwartz, John C. Hamilton, Francesca R. Cinti
2001, Miscellaneous Field Studies Map 2360
INTRODUCTION The magnitude 6.7 (M6.7) Northridge earthquake of 17 January 1994 strongly shook the Los Angeles urban region, resulting in 33 direct deaths, more than 20,000 people forced out of their homes, and an estimated $20 billion in damage (Hall, 1994). The earthquake was caused by slip on a previously unrecognized...
Geologic map of the Jasper Quadrangle, Newton and Boone counties, Arkansas
M.R. Hudson, K.E. Murray, Deborah Pezzutti
2001, Miscellaneous Field Studies Map 2356
This digital geologic map compilation presents new polygon (i.e., geologic map unit contacts), line (i.e., fault, fold axis, and structure contour), and point (i.e., structural attitude, contact elevations) vector data for the Jasper 7 1/2' quadrangle in northern Arkansas. The map database, which is at 1:24,000-scale resolution, provides geologic...
What is the Ohio Gap Analysis Program (GAP)?
S.A. Covert, Melissa Haltuch, Troy Wilson
2001, Fact Sheet 093-01
The Gap Analysis Program (GAP) is a program for identifying the degree to which native species and natural communities are represented in present-day conservation lands. Those areas where unique biological communities and conservation lands do not overlap constitute gaps in our conservation effort.GAP aids in the protection of biodiversity through...
Characterization of surface-water quality based on real-time monitoring and regression analysis, Quivira National Wildlife Refuge, south-central Kansas, December 1998 through June 2001
Victoria G. Christensen
2001, Water-Resources Investigations Report 2001-4248
Because of the considerable wildlife benefits offered by the Quivira National Wildlife Refuge in south-central Kansas, there is a desire to ensure suitable water quality. To assess the quality of water flowing from Rattlesnake Creek into the refuge, the U.S. Geological Survey collected periodic water samples from December 1998 through...
Hydrologic data and a proposed water-quality monitoring network for the Kobuk River basin, Gates of the Arctic National Park and Preserve, and Kobuk Valley National Park, Alaska
Timothy P. Brabets
2001, Water-Resources Investigations Report 2001-4141
Located in northwestern Alaska, the Kobuk River drains a watershed of approximately 12,300 square miles. Two national parks are located in the basin: the entire Kobuk Valley National Park and and a portion of Gates of the Arctic National Park and Preserve. Reconnaissance-type water-quality data collected on the Kobuk River...
Methods of analysis by the U.S. Geological Survey Organic Geochemistry Research Group—Determination of glyphosate, aminomethylphosphonic acid, and glufonsinate in water using online solid-phase extraction and high-performance liquid chromatography/mass spectrometry
E.A. Lee, A.P. Strahan, E.M. Thurman
2001, Open-File Report 2001-454
An analytical method for the determination of glyphosate, its principal degradation compound, aminomethylphosphonic acid (AMPA), and glufosinate in water with varying matrices has been developed. Four different sample matrices fortified at 0.2 and 2.0 μg/L (micrograms per liter) were analyzed using precolumn derivatization with 9-fluorenylmethylchloroformate (FMOC). After derivatization, cleanup and...
Hydrogeologic data for the Big River–Mishnock River stream-aquifer system, central Rhode Island
P. A. Craft
2001, Open-File Report 2001-250
Hydrogeology, ground-water development alternatives, and water quality in the Big Mishnock stream-aquifer system in central Rhode Island are being investigated as part of a long-term cooperative program between the Rhode Island Water Resources Board and the U.S. Geological Survey to evaluate the ground-water resources throughout Rhode Island. The study area includes...
Thickness and geometry of Cenozoic deposits in California Wash area, Nevada, based on gravity and seismic-reflection data
V.E. Langenheim, J. J. Miller, W. R. Page, J. A. Grow
2001, Open-File Report 2001-393
Gravity and seismic-reflection data provide insights into the subsurface stratigraphy and structure of the California Wash area of southern Nevada. This area is part of the Lower Colorado flow system and stratigraphic and structural data are important inputs into developing the hydrogeologic framework. These data indicate that the basin beneath...
Debris flows from failures of neoglacial-age moraine dams in the Three Sisters and Mount Jefferson Wilderness areas, Oregon
J. E. O’Connor, J. H. Hardison, J. E. Costa
2001, Professional Paper 1606
The highest concentration of lakes dammed by Neoglacial moraines in the conterminous United States is in the Mount Jefferson and Three Sisters Wilderness Areas in central Oregon. Between 1930 and 1980, breakouts of these lakes have resulted in 11 debris flows. The settings and sequences of events leading to breaching...
Geologic map of the Winona Quadrangle, Shannon County, Missouri
R. C. Orndorff, R.W. Harrison
2001, IMAP 2749
The bedrock exposed in the Winona Quadrangle, Missouri, comprises Mesoproterozoic aged volcanic rocks overlain by Late Cambrian and Early Ordovician aged dolomite, sandstone, and chert. The sedimentary rocks are nearly flat-lying except where they drape around knobs of the volcanic rocks or where they are adjacent to faults. The...
Investigation of dioxin concentrations in the lower Roanoke River basin, North Carolina, February 26-March 7, 2001
K. F. Miller, D. A. Walters
2001, Open-File Report 2001-345
Dioxin is a toxic chemical that, when present in the environment, can cause cancer and birth defects in humans. Dioxin is of particular concern because concentrations of dioxin that were released into the environment many years ago remain a contributing factor to current exposure. Dioxin exposure often occurs in surface-water...
Relationships between thiamine content of eggs and concentrations of lead and other heavy metals in water and survival of Atlantic salmon fry
H. George Ketola, Leslie R. Wedge, Sandra J. Lary, Edward C. Grant, Michael A. Rutzke
Linda P. Wagenet, David A.V. Eckhardt, Nelson G. Hairston Jr., Daniel E. Karig, Richard Yager, editor(s)
2001, Conference Paper, A Symposium on Environmental Research in the Cayuga Lake Watershed
Atlantic salmon (Salmo salar) were extirpated in much of New York state by the late 1800s. Currently, Atlantic salmon from Little Clear Pond (Saranac Lake, NY) are stocked in Cayuga Lake (Ithaca, NY) and Lake Ontario to support a fishery, but reproduction is severely impaired by thiamine deficiency in Cayuga...
Energy-to-moment ratios for damaging intraslab earthquakes: preliminary results on a few case studies
Emile A. Okal, S. H. Kirby
2001, Open-File Report 2002-328
We use the energy-to-moment ratio, as introduced by Newman and Okal [1998] to examine the source characteristics of normal-faulting intraslab earthquakes, compared to nearby interplate thrust events, based on recent case studies in central Chile and southeastern Mexico. In Chile, we find that the 1997 intraslab event had an exceptionally...
U.S. Geological Survey Activities Related to American Indians and Alaska Natives Fiscal Year 2001
Water Resources Division, U.S. Geological Survey
2001, Report
Information is a resource that can help Native American governments and their people. The U.S. Geological Survey (USGS) makes available technical expertise, reports, and other impartial information sources that can benefit Native Americans interested in subsistence issues, water, land use, and the health of many parts of the environment.The USGS...