State of Texas - Highlighting low-lying areas derived from USGS Digital Elevation Data
John J. Kosovich
2008, Scientific Investigations Map 3050
In support of U.S. Geological Survey (USGS) disaster preparedness efforts, this map depicts a color shaded relief representation of Texas and a grayscale relief of the surrounding areas. The first 30 feet of relief above mean sea level are displayed as brightly colored 5-foot elevation bands, which highlight low-elevation areas...
The U.S. Geological Survey Modular Ground-Water Model - PCGN: A Preconditioned Conjugate Gradient Solver with Improved Nonlinear Control
Richard L. Naff, Edward R. Banta
2008, Open-File Report 2008-1331
The preconditioned conjugate gradient with improved nonlinear control (PCGN) package provides addi-tional means by which the solution of nonlinear ground-water flow problems can be controlled as compared to existing solver packages for MODFLOW. Picard iteration is used to solve nonlinear ground-water flow equations by iteratively solving a linear approximation of...
Degree of contamination and sources of polychlorinated biphenyls in Meandering Road Creek and Woods Inlet of Lake Worth, Fort Worth, Texas, 2004 and 2006-07
Christopher L. Braun, Jennifer T. Wilson, Peter C. Van Metre
2008, Scientific Investigations Report 2008-5177
Lake Worth is a reservoir on the West Fork Trinity River on the western edge of Fort Worth, Texas. Air Force Plant 4 (AFP4) is on the eastern shore of Woods Inlet, an arm of Lake Worth that extends south from the main body of the lake. Two previous reports...
Gulf of Mexico region — Highlighting low-lying areas derived from USGS Digital Elevation Data
John J. Kosovich
2008, Scientific Investigations Map 3048
In support of U.S. Geological Survey (USGS) disaster preparedness efforts, this map depicts a color shaded relief representation of the area surrounding the Gulf of Mexico. The first 30 feet of relief above mean sea level are displayed as brightly colored 5-foot elevation bands, which highlight low-elevation areas at a...
Bent's Old Fort: Amphibians and Reptiles
E. Muths
2008, General Information Product 83
Bent's Old Fort National Historic Site sits along the Arkansas River in the semi-desert prairie of southeastern Colorado. The USGS provided assistance in designing surveys to assess the variety of herpetofauna (amphibians and reptiles) resident at this site. This brochure is the results of those efforts and provides visitors with...
Radionuclide Data and Calculations and Loss-On-Ignition, X-Ray Fluorescence, and ICP-AES Data from Cores in Catchments of the Animas River, Colorado
Stan E. Church, Cyndi A. Rice, Marci E. Marot
2008, Data Series 382
The U.S. Departments of Agriculture and Interior Abandoned Mine Lands (AML) Initiative is focused on the evaluation of the effect of past mining practices on the water quality and the riparian and aquatic habitats of impacted stream reaches downstream from historical mining districts located primarily on Federal lands. This problem...
State of Louisiana - Highlighting low-lying areas derived from USGS Digital Elevation Data
John J. Kosovich
2008, Scientific Investigations Map 3049
In support of U.S. Geological Survey (USGS) disaster preparedness efforts, this map depicts a color shaded relief representation highlighting the State of Louisiana and depicts the surrounding areas using muted elevation colors. The first 30 feet of relief above mean sea level are displayed as brightly colored 5-foot elevation bands,...
State of Florida 1:24,000- and 1:100,000-scale quadrangle index map - Highlighting low-lying areas derived from USGS Digital Elevation Models
John J. Kosovich
2008, Scientific Investigations Map 3047
In support of U.S. Geological Survey (USGS) disaster preparedness efforts, this map depicts 1:24,000- and 1:100,000-scale quadrangle footprints over a color shaded relief representation of the State of Florida. The first 30 feet of relief above mean sea level are displayed as brightly colored 5-foot elevation bands, which highlight low-elevation...
Analysis of the Magnitude and Frequency of Peak Discharge and Maximum Observed Peak Discharge in New Mexico and Surrounding Areas
Scott D. Waltemeyer
2008, Scientific Investigations Report 2008-5119
Estimates of the magnitude and frequency of peak discharges are necessary for the reliable design of bridges, culverts, and open-channel hydraulic analysis, and for flood-hazard mapping in New Mexico and surrounding areas. The U.S. Geological Survey, in cooperation with the New Mexico Department of Transportation, updated estimates of peak-discharge magnitude...
Comparison of the modified Biot-Gassmann theory and the Kuster-Toksöz theory in predicting elastic velocities of sediments
Myung W. Lee
2008, Scientific Investigations Report 2008-5196
Elastic velocities of water-saturated sandstones depend primarily on porosity, effective pressure, and the degree of consolidation. If the dry-frame moduli are known, from either measurements or theoretical calculations, the effect of pore water on velocities can be modeled using the Gassmann theory. Kuster and Toksoz developed a theory based on...
Jurassic-Cretaceous Composite Total Petroleum System and Geologic Assessment of Oil and Gas Resources of the North Cuba Basin, Cuba
U.S. Geological Survey North Cuba Basin Assessment Team
2008, Data Series 69-M
The purpose of the U.S. Geological Survey's (USGS) World Oil and Gas Assessment is to develop geologically based hypotheses regarding the potential for additions to oil and gas reserves in priority areas of the world. The U.S. Geological Survey (USGS) completed an assessment of the undiscovered oil and gas potential...
Deciphering landslide behavior using large-scale flume experiments
Mark E. Reid, Richard M. Iverson, Neal R. Iverson, Richard G. LaHusen, Dianne L. Brien, Matthew Logan
2008, Conference Paper, Proceedings of the First World Landslide Forum
Landslides can be triggered by a variety of hydrologic events and they can exhibit a wide range of movement dynamics. Effective prediction requires understanding these diverse behaviors. Precise evaluation in the field is difficult; as an alternative we performed a series of landslide initiation experiments in the large-scale, USGS debris-flow...
Rivers and streams: Physical setting and adapted biota
Margaret A. Wilzbach, K.W. Cummins
2008, Book chapter, Encyclopedia of Ecology
Streams and rivers are enormously important, with their ecological, and economic value, greatly outweighing their significance on the landscape. Lotic ecology began in Europe with a focus on the distribution, abundance, and taxonomic composition of aquatic organisms and in North American with a focus on fishery biology. Since 1980, stream/river...
Future challenges for science and resource management of the Colorado River
John F. Hamill
Theodore S. Melis, John F. Hamill, Glenn E. Benneyy, Coggins Jr., Paul E. Grams, Theodore A. Kennedy, Dennis M. Kubly, Barbara E. Ralston, editor(s)
2008, Conference Paper, Proceedings of the Colorado River Basin Science and Resource Management Symposium, November 18-20, 2008, Scottsdale, Arizona coming together, coordination of science and restoration activities for the Colorado River ecosystem
No abstract available....
Incorporation of Fine-Grained Sediment Erodibility Measurements into Sediment Transport Modeling, Capitol Lake, Washington
Andrew W. Stevens, Guy Gelfenbaum, Edwin Elias, Craig Jones
2008, Open-File Report 2008-1340
Capitol Lake was created in 1951 with the construction of a concrete dam and control gate that prevented salt-water intrusion into the newly formed lake and regulated flow of the Deschutes River into southern Puget Sound. Physical processes associated with the former tidally dominated estuary were altered, and the dam...
Water-quality, bed-sediment, and biological data (October 2006 through September 2007) and statistical summaries of long-term data for streams in the Clark Fork Basin, Montana
Kent A. Dodge, Michelle I. Hornberger, Jessica Dyke
2008, Open-File Report 2008-1318
Water, bed sediment, and biota were sampled in streams from Butte to below Milltown Reservoir as part of a long-term monitoring program in the upper Clark Fork basin; additional water-quality samples were collected in the Clark Fork basin from sites near Milltown Reservoir downstream to near the confluence of the...
Simulated effects of ground-water withdrawals and artificial recharge on discharge to streams, springs, and riparian vegetation in the Sierra Vista Subwatershed of the Upper San Pedro Basin, southeastern Arizona
Stanley A. Leake, Donald R. Pool, James M. Leenhouts
2008, Scientific Investigations Report 2008-5207
In the context of ground-water resources, “capture” or “streamflow depletion” refers to withdrawal-induced changes in inflow to or outflow from an aquifer. These concepts are helpful in understanding the effects of long-term development of ground-water resources. For the Upper San Pedro Basin in Arizona, USA and Sonora, Mexico, a recently...
Boreal soil carbon dynamics under a changing climate: A model inversion approach
Zhaosheng Fan, Jason C. Neff, Jennifer W. Harden, Kimberly P. Wickland
2008, Journal of Geophysical Research Biogeosciences (113)
Several fundamental but important factors controlling the feedback of boreal organic carbon (OC) to climate change were examined using a mechanistic model of soil OC dynamics, including the combined effects of temperature and moisture on the decomposition of OC and the factors controlling carbon quality and decomposition with depth. To...
Release of Hexavalent Chromium by Ash and Soils in Wildfire-Impacted Areas
Ruth E. Wolf, Suzette A. Morman, Geoffrey S. Plumlee, Philip L. Hageman, Monique Adams
2008, Open-File Report 2008-1345
The highly oxidizing environment of a wildfire has the potential to convert any chromium present in the soil or in residential or industrial debris to its more toxic form, hexavalent chromium, a known carcinogen. In addition, the highly basic conditions resulting from the combustion of wood and wood products could...
Geohydrology of the Unconsolidated Valley-Fill Aquifer in the Meads Creek Valley, Schuyler and Steuben Counties, New York
Todd S. Miller, Edward F. Bugliosi, James E. Reddy
2008, Scientific Investigations Report 2008-5122
The Meads Creek valley encompasses 70 square miles of predominantly forested uplands in the upper Susquehanna River drainage basin. The valley, which was listed as a Priority Waterbody by the New York State Department of Environmental Conservation in 2004, is prone to periodic flooding, mostly in its downstream end, where...
The Landslide Handbook - A Guide to Understanding Landslides
Lynn M. Highland, Peter Bobrowsky
2008, Circular 1325
This handbook is intended to be a resource for people affected by landslides to acquire further knowledge, especially about the conditions that are unique to their neighborhoods and communities. Considerable literature and research are available concerning landslides, but unfortunately little of it is synthesized and integrated to address the geographically...
An inventory of terrestrial mammals at national parks in the Northeast Temperate Network and Sagamore Hill National Historic Site
Andrew T. Gilbert, Allan F. O’Connell, Elizabeth M. Annand, Neil W. Talancy, John R. Sauer, James D. Nichols
2008, Scientific Investigations Report 2007-5245
An inventory of mammals was conducted during 2004 at nine national park sites in the Northeast Temperate Network (NETN): Acadia National Park (NP), Marsh-Billings-Rockefeller National Historical Park (NHP), Minute Man NHP, Morristown NHP, Roosevelt-Vanderbilt National Historic Site (NHS), Saint-Gaudens NHS, Saugus Iron Works NHS, Saratoga NHP, and Weir Farm NHS....
Geologic Map of the Beta Regio Quadrangle (V-17), Venus
Alexander Basilevsky
2008, Scientific Investigations Map 3023
Aspen Ecology in Rocky Mountain National Park: Age Distribution, Genetics, and the Effects of Elk Herbivory
Linda Zeigenfuss, Dan Binkley, Gerald A. Tuskan, William H. Romme, Tongming Yin, Stephen DiFazio, Francis J. Singer
2008, Open-File Report 2008-1337
Lack of recruitment and canopy replacement of aspen (Populus tremuloides) stands that grow on the edges of grasslands on the low-elevation elk (Cervus elaphus) winter range of Rocky Mountain National Park (RMNP) in Colorado have been a cause of concern for more than 70 years. We used a combination of...
Analysis of Geomorphic and Hydrologic Characteristics of Mount Jefferson Debris Flow, Oregon, November 6, 2006
Steven Sobieszczyk, Mark A. Uhrich, David R. Piatt, Heather M. Bragg
2008, Scientific Investigations Report 2008-5204
On November 6, 2006, a rocky debris flow surged off the western slopes of Mount Jefferson into the drainage basins of Milk and Pamelia Creeks in Oregon. This debris flow was not a singular event, but rather a series of surges of both debris and flooding throughout the day. The...
