The Quaternary Silver Creek Fault Beneath the Santa Clara Valley, California
Carl M. Wentworth, Robert A. Williams, Robert C. Jachens, Russell W. Graymer, William J. Stephenson
2010, Open-File Report 2010-1010
The northwest-trending Silver Creek Fault is a 40-km-long strike-slip fault in the eastern Santa Clara Valley, California, that has exhibited different behaviors within a changing San Andreas Fault system over the past 10-15 Ma. Quaternary alluvium several hundred meters thick that buries the northern half of the Silver Creek Fault,...
Simulation of Runoff and Reservoir Inflow for Use in a Flood-Analysis Model for the Delaware River, Pennsylvania, New Jersey, and New York, 2004-2006
Daniel J. Goode, Edward H. Koerkle, Scott A. Hoffman, R. Steve Regan, Lauren E. Hay, Steven L. Markstrom
2010, Open-File Report 2010-1014
A model was developed to simulate inflow to reservoirs and watershed runoff to streams during three high-flow events between September 2004 and June 2006 for the main-stem subbasin of the Delaware River draining to Trenton, N.J. The model software is a modified version of the U.S. Geological Survey (USGS) Precipitation-Runoff...
Changes in streamflow and the flux of nutrients in the Mississippi-Atchafalaya River Basin, USA, 1980-2007
William A. Battaglin, Brent T. Aulenbach, Aldo Vecchia, Herbert T. Buxton
2010, Scientific Investigations Report 2009-5164
Nutrients and freshwater delivered by the Mississippi and Atchafalaya Rivers drive algal production in the northern Gulf of Mexico, which eventually results in the widespread occurrence of hypoxic bottom waters along the Louisiana and Texas coast. Researchers have demonstrated a relation between the extent of the hypoxic zone and the...
International viewpoint and news
Gaye S. Farris, Anne Marie de Grosbois
2010, Environmental Earth Sciences (59) 1829-1831
No abstract available....
2008 High-Flow Experiment at Glen Canyon Dam Benefits Colorado River Resources in Grand Canyon National Park
Theodore S. Melis, David J. Topping, Paul E. Grams, David M. Rubin, Scott Wright, Amy E. Draut, Joseph E. Hazel Jr., Barbara E. Ralston, Theodore A. Kennedy, Emma Rosi-Marshall, Josh Korman, Kara D. Hilwig, Lara M. Schmit
2010, Fact Sheet 2010-3009
On March 5, 2008, the Department of the Interior began a 60-hour high-flow experiment at Glen Canyon Dam, Arizona, to determine if water releases designed to mimic natural seasonal flooding could be used to improve downstream resources in Glen Canyon National Recreation Area and Grand Canyon National Park. U.S. Geological...
Sandbar response in Marble and Grand Canyons, Arizona, following the 2008 high-flow experiment on the Colorado River
Joseph E. Hazel Jr., Paul E. Grams, John C. Schmidt, Matt Kaplinski
2010, Scientific Investigations Report 2010-5015
A 60-hour release of water at 1,203 cubic meters per second (m3/s) from Glen Canyon Dam in March 2008 provided an opportunity to analyze channel-margin response at discharge levels above the normal, diurnally fluctuating releases for hydropower plant operations. We compare measurements at sandbars and associated campsites along the mainstem...
Investigation of submarine groundwater discharge along the tidal reach of the Caloosahatchee River, southwest Florida
Christopher D. Reich
2010, Open-File Report 2009-1273
The tidal reach of the Caloosahatchee River is an estuarine habitat that supports a diverse assemblage of biota including aquatic vegetation, shellfish, and finfish. The system has been highly modified by anthropogenic activity over the last 150 years (South Florida Water Management District (SFWMD), 2009). For example, the river was...
Riparian vegetation response to the March 2008 short-duration, High-Flow Experiment— Implications of timing and frequency of flood disturbance on nonnative plant establishment along the Colorado River below Glen Canyon Dam
Barbara E. Ralston
2010, Open-File Report 2010-1022
Riparian plant communities exhibit various levels of diversity and richness. These communities are affected by flooding and are vulnerable to colonization by nonnative species. Since 1996, a series of three high-flow experiments (HFE), or water releases designed to mimic natural seasonal flooding, have been conducted at Glen Canyon Dam, Ariz.,...
Development of an Environmental Flow Framework for the McKenzie River Basin, Oregon
John Risley, J. Rose Wallick, Ian Waite, Adam J. Stonewall
2010, Scientific Investigations Report 2010-5016
The McKenzie River is a tributary to the Willamette River in northwestern Oregon. The McKenzie River is approximately 90 miles in length and has a drainage area of approximately 1,300 square miles. Two major flood control dams, a hydropower dam complex, and two hydropower canals significantly alter streamflows in the...
The Limit of Inundation of the September 29, 2009, Tsunami on Tutuila, American Samoa
Bruce E. Jaffe, Guy Gelfenbaum, Mark L. Buckley, Steve Watt, Alex Apotsos, Andrew W. Stevens, Bruce M. Richmond
2010, Open-File Report 2010-1018
U.S. Geological Survey scientists investigated the coastal impacts of the September 29, 2009, South Pacific tsunami in Tutuila, American Samoa in October and November 2009, including mapping the alongshore variation in the limit of inundation. Knowing the inundation limit is useful for planning safer coastal development and evacuation routes for...
Antibiotic, pharmaceutical, and wastewater-compound data for Michigan, 1998-2005
Sheridan Kidd Haack
2010, Scientific Investigations Report 2009-5217
Beginning in the late 1990's, the U.S. Geological Survey began to develop analytical methods to detect, at concentrations less than 1 microgram per liter (ug/L), emerging water contaminants such as pharmaceuticals, personal-care chemicals, and a variety of other chemicals associated with various human and animal sources. During 1998-2005, the U.S....
USGS Science Serves Public Health
Herbert T. Buxton
2010, Fact Sheet 2010-3004
Human health so often depends on the health of the environment and wildlife around us. The presence of naturally occurring or human environmental contaminants and the emergence of diseases transferred between animals and humans are growing concerns worldwide. The USGS is a source of natural science information vital for understanding...
Can differences in phosphorus uptake kinetics explain the distribution of cattail and sawgrass in the Florida Everglades?
Hans Brix, Bent Lorenzen, Irving A. Mendelssohn, Karen L. McKee, ShiLi Miao
2010, Plant Biology (10) 1-14
BackgroundCattail (Typha domingensis) has been spreading in phosphorus (P) enriched areas of the oligotrophic Florida Everglades at the expense of sawgrass (Cladium mariscus spp. jamaicense). Abundant evidence in the literature explains how the opportunistic features of Typha might lead to a complete dominance in P-enriched areas....
Modeling the human invader in the United States
Thomas J. Stohlgren, Catherine S. Jarnevich, Chandra P. Giri
2010, Journal of Applied Remote Sensing (4)
Modern biogeographers recognize that humans are seen as constituents of ecosystems, drivers of significant change, and perhaps, the most invasive species on earth. We found it instructive to model humans as invasive organisms with the same environmental factors. We present a preliminary model of the spread of modern humans in...
Considering native and exotic terrestrial reptiles in island invasive species eradication programmes in the Tropical Pacific
Richard N. Fisher
C.R. Veitch, Mike N. Clout, D. R. Towns, editor(s)
2010, Conference Paper, Island invasives: Eradication and management: Proceedings of the International Conference on Island Invasives
Most island restoration projects with reptiles, either as direct beneficiaries of conservation or as indicators of recovery responses, have been on temperate or xeric islands. There have been decades of research, particularly on temperate islands in New Zealand, on the responses of native reptiles to mammal eradications but very few...
Review of Trace-Element Field-Blank Data Collected for the California Groundwater Ambient Monitoring and Assessment (GAMA) Program, May 2004-January 2008
Lisa D. Olsen, Miranda S. Fram, Kenneth Belitz
2010, Scientific Investigations Report 2009-5220
Trace-element quality-control samples (for example, source-solution blanks, field blanks, and field replicates) were collected as part of a statewide investigation of groundwater quality in California, known as the Priority Basins Project of the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The GAMA Priority Basins Project is being conducted by the...
Abundance, Timing of Migration, and Egg-to-Smolt Survival of Juvenile Chum Salmon, Kwethluk River, Alaska, 2007 and 2008
Sean E. Burril, Christian E. Zimmerman, James E. Finn, Water Resources Division, U.S. Geological Survey, Daniel Gillikin, U.S. Fish and Wildlife Service
2010, Open-File Report 2010-1028
To better understand and partition mortality among life stages of chum salmon (Oncorhynchus keta), we used inclined-plane traps to monitor the migration of juveniles in the Kwethluk River, Alaska in 2007 and 2008. The migration of juvenile chum salmon peaked in mid-May and catch rates were greatest when water levels...
Power to detect trends in Missouri River fish populations within the Habitat Assessment Monitoring Program
Janice L. Bryan, Mark L. Wildhaber, Dan W. Gladish
2010, Open-File Report 2010-1011
As with all large rivers in the United States, the Missouri River has been altered, with approximately one-third of the mainstem length impounded and one-third channelized. These physical alterations to the environment have affected the fish populations, but studies examining the effects of alterations have been localized and for short...
Assessment of undiscovered oil and gas resources of four west Africa geologic provinces
Michael E. Brownfield, Ronald R. Charpentier, Troy A. Cook, Timothy R. Klett, Janet K. Pitman, Richard M. Pollastro, Christopher J. Schenk, Marilyn E. Tennyson
2010, Fact Sheet 2010-3006
Four geologic provinces located along the northwest and west-central coast of Africa recently were assessed for undiscovered oil, natural gas, and natural gas liquids resources as part of the U.S. Geological Survey's (USGS) World Oil and Gas Assessment. Using a geology-based assessment methodology, the USGS estimated mean volumes of 71.7...
Evolution of Ore Deposits and Technology Transfer Project: Isotope and Chemical Methods in Support of the U.S. Geological Survey Science Strategy, 2003-2008
Robert O. Rye, Craig A. Johnson, Gary P. Landis, Albert H. Hofstra, Poul Emsbo, Craig A. Stricker, Andrew G. Hunt, Brian G. Rusk
2010, Circular 1343
Principal functions of the U.S. Geological Survey (USGS) Mineral Resources Program are providing assessments of the location, quantity, and quality of undiscovered mineral deposits, and predicting the environmental impacts of exploration and mine development. The mineral and environmental assessments of domestic deposits are used by planners and decisionmakers to improve...
Health effects of energy resources
William Orem, Calin Tatu, Nikola Pavlovic, Joseph Bunnell, Allan Kolker, Mark Engle, Ben Stout
2010, Fact Sheet 2009-3096
Energy resources (coal, oil, and natural gas) are among the cornerstones of modern industrial society. The exploitation of these resources, however, is not without costs. Energy materials may contain harmful chemical substances that, if mobilized into air, water, or soil, can adversely impact human health and environmental quality. In order...
Bank erosion, mass wasting, water clarity, bathymetry and a sediment budget along the dam-regulated Lower Roanoke River, North Carolina
Edward R. Schenk, Cliff R. Hupp, Jean M. Richter, Daniel E. Kroes
2010, Open-File Report 2009-1260
Dam construction and its impact on downstream fluvial processes may substantially alter ambient bank stability, floodplain inundation patterns, and channel morphology. Most of the world's largest rivers have been dammed, which has prompted management efforts to mitigate dam effects. Three high dams (completed between 1953 and 1963) occur along the...
Geologic Map of the House Rock Valley Area, Coconino County, Northern Arizona
George H. Billingsley, Susan S. Priest
2010, Scientific Investigations Map 3108
This geologic map is a cooperative effort of the U.S. Geological Survey (USGS), the Bureau of Land Management, the National Park Service, and the U.S. Forest Service to provide a geologic database for resource management officials and visitor information services. This map was produced in response to information needs related...
Geologic assessment of undiscovered oil and gas resources of the West Greenland-East Canada Province
Christopher J. Schenk
2010, Open-File Report 2010-1012
The U.S. Geological Survey (USGS) recently assessed the potential for undiscovered oil and gas resources of the West Greenland-East Canada Province as part of the USGS Circum-Arctic Resource Appraisal program. The province lies in the offshore area between western Greenland and eastern Canada and includes Baffin Bay, Davis Strait, Lancaster...
Tracking tracer breakthrough in the hyporheic zone using time‐lapse DC resistivity, Crabby Creek, Pennsylvania
Jonathan E. Nyquist, Laura Toran, Allison C. Fang, Robert J. Ryan, Donald O. Rosenberry
2010, Conference Paper, Proceedings of the 23rd Annual Symposium on the Application of Gephysics to Engrineering and Envrionmental Problems (SAGEEP)
Characterization of the hyporheic zone is of critical importance for understanding stream ecology, contaminant transport, and groundwater‐surface water interaction. A salt water tracer test was used to probe the hyporheic zone of a recently re‐engineered portion of Crabby Creek, a stream located near Philadelphia, PA. The tracer solution was tracked...
