Water Resources Division, U.S. Geological Survey
2006, Water Data Report NV-05-1
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Publication Extents
Not all publications have extents, not all extents are completely accurateLari A. Knochenmus
2006, Scientific Investigations Report 2006-5013
Three major aquifer systems-the surficial aquifer system, the intermediate aquifer system, and the Floridan aquifer system-are recognized in the approximately 5,100-square-mile southern west-central Florida study area. The principal source of freshwater for all uses is ground water supplied from the three aquifer systems. Ground water from the intermediate aquifer system...
Blakemore E. Thomas
2006, Fact Sheet 2006-3004
Total annual streamflow of the San Pedro River at Charleston in southeastern Arizona (fig. 1) decreased by about 66 percent from 1913 to 2002 (fig. 2). The San Pedro River is one of the few remaining free-flowing perennial streams in the arid Southwestern United States, and the riparian forest along...
Loren F. Metzger, Christopher D. Farrar, Kathryn M. Koczot, Eric G. Reichard
2006, Scientific Investigations Report 2006-5115
This study of the geohydrology and water chemistry of the Alexander Valley, California, was done to provide an improved scientific basis for addressing emerging water-management issues, including potential increases in water demand and changes in flows in the Russian River. The study tasks included (1) evaluation of existing geohydrological, geophysical,...
G. G. Phelps, Stephen J. Walsh, Robert M. Gerwig, William B. Tate
2006, Open-File Report 2006-1107
The hydrology, water chemistry, and aquatic communities of Silver Springs, De Leon Spring, Gemini Springs, and Green Spring in the St. Johns River Water Management District, Florida, were studied in 2004 to provide a better understanding of each spring and to compile data of potential use in future water-management decisions....
Ruth A. Harris, Steven M. Day
2006, Geophysical Research Letters (33)
No abstract available....
Viki Bankey, V. J. S. Grauch, B. J. Drenth, Geophex Ltd.
2006, Open-File Report 2006-1170
This report contains digital data, image files, and text files describing data formats and survey procedures for aeromagnetic data collected during high-resolution aeromagnetic surveys in southern Colorado and northern New Mexico in December, 2005. One survey covers the eastern edge of the San Luis basin, including the towns of Questa,...
Philip T. Harte
2006, Scientific Investigations Report 2006-5083
The Savage Municipal Well Superfund site in the Town of Milford, N.H., is underlain by a 0.5-square mile plume of volatile organic compounds (VOCs), mostly tetrachloroethylene (PCE). The plume occurs mostly within a highly transmissive sand and gravel layer, but also extends into underlying till and bedrock. The plume...
James M. Leenhouts, Juliet C. Stromberg, Russell L. Scott, Sharon J. Lite, Mark Dixon, Tyler Rychener, Elizabeth Makings, David G. Williams, David C. Goodrich, William L. Cable, Lainie R. Levick, Roberta McGuire, Rico M. Gazal, Enrico A. Yepez, Patrick Ellsworth, Travis E. Huxman
2006, Scientific Investigations Report 2005-5163
This study is a coordinated effort by the U.S. Geological Survey (USGS), the U.S. Department of Agriculture, Agricultural Research Service (USDA ARS), and Arizona State University, with assistance from the U.S. Army Corps of Engineers, the University of Wyoming, and the University of Arizona. The specific objectives of the study...
Amy E. Draut, Michael E. Field, Michael H. Bothner, Joshua B. Logan, Michael A. Casso, Sandra M. Baldwin, Curt D. Storlazzi
2006, Open-File Report 2006-1125
Delivery and dispersal of fluvial sediment in Hanalei Bay, Kaua’i, Hawaii, have important implications for the health of local coral reefs. The reef community in Hanalei Bay represents a relatively healthy ecosystem. However, the reefs are periodically stressed by storm waves, and increases in sediment and dissolved substances from the...
Jennifer L. Krstolic, Donald C. Hayes, Peter M. Ruhl
2006, Scientific Investigations Report 2006-5025
Increasing development and increasing water withdrawals for public, industrial, and agricultural water supply threaten to reduce streamflows in the Shenandoah River basin in Virginia. Water managers need more information to balance human water-supply needs with the daily streamflows necessary for maintaining the aquatic ecosystems. To meet the need for comprehensive...
Peter Dartnell, Patrick L. Barnard, John L. Chin, Daniel Hanes, Rikk G. Kvitek, Pat J. Iampietro, James V. Gardner
2006, Scientific Investigations Map 2917
San Francisco Bay in Northern California is one of the largest and most altered estuaries within the United States. The sea floor within the bay as well as at its entrance is constantly changing due to strong tidal currents, aggregate mining, dredge disposal, and the creation of new land using...
Benjamin M. Sleeter, Christian G. Raumann
2006, Scientific Investigations Report 2006-5098
The U.S. Geological Survey's Land-Cover Trends Project aims to estimate the rates of contemporary land-cover change within the conterminous United States between 1972 and 2000. A random sampling approach was used to select a representative sample of 10-km by 10-km sample blocks and to estimate change within +/- 1 percent...
Peter Dartnell, Peter Barnes, James V. Gardner, Kristen Lee
2006, Scientific Investigations Map 2930
Geologists and biologists are working together to understand the links between lake floor geology (composition and shape) and the distribution of lake trout throughout their life cycle. Lake floor geology is one of the main factors determining where lake trout spawn, feed, and hide. In support of ongoing research to...
Tom Simkin, Robert I. Tilling, Peter R. Vogt, Stephen H. Kirby, Paul Kimberly, David B. Stewart
2006, IMAP 2800
Our Earth is a dynamic planet, as clearly illustrated on the main map by its topography, over 1500 volcanoes, 44,000 earthquakes, and 170 impact craters. These features largely reflect the movements of Earth's major tectonic plates and many smaller plates or fragments of plates (including microplates). Volcanic eruptions and earthquakes...
Bradford Butman, David C. Twichell, Peter A. Rona, Brian E. Tucholke, Tammie J. Middleton, James M. Robb
2006, Open-File Report 2004-1441
These maps show the sea floor topography and backscatter intensity of the Hudson Canyon region on the continental slope and rise offshore of New Jersey and New York (fig. 1 and fig. 2). Sheet 1 shows sea floor topography as shaded relief. Sheet 2 shows sea floor topography as shaded...
Stephen T. Benedict, Nikhil Deshpande, Nadim M. Aziz, Paul Conrads
2006, Open-File Report 2003-295
The U.S. Geological Survey conducted a study in cooperation with the Federal Highway Administration in which predicted abutment-scour depths computed with selected predictive equations were compared with field measurements of abutment-scour depth made at 144 bridges in South Carolina. The assessment used five equations published in the Fourth Edition of...
George H. Billingsley, Tracey J. Felger, Susan S. Priest
2006, Scientific Investigations Map 2895
The geologic map of the Valle 30' x 60' quadrangle is the result of a cooperative effort between the U.S. Geological Survey and the National Park Service to provide geologic information for regional resource management and visitor information services for Grand Canyon National Park, Arizona. The map area encompasses approximately...
Paul Stone
2006, Scientific Investigations Map 2922
The Blythe 30' by 60' quadrangle is located along the Colorado River between southeastern California and western Arizona. This map depicts the geology of the west half of the Blythe quadrangle, which is mostly in California. The map area is a desert terrain consisting of mountain ranges surrounded by extensive...
James J. Duncker, Thomas M. Over, Juan A. Gonzalez
2006, Scientific Investigations Report 2006-5018
Acoustic velocity meters (AVM's) and acoustic Doppler current profilers (ADCP's) were used to measure streamflow at four streamflow-gaging stations in the Chicago River system. The streamflow data were used to compute discharge and to determine the uncertainty in the computed annual mean discharge at each station for the Lake Michigan...
Theresa S. Presser, Samuel N. Luoma
2006, Professional Paper 1646
Selenium discharges to the San Francisco Bay-Delta Estuary (Bay-Delta) could change significantly if federal and state agencies (1) approve an extension of the San Luis Drain to convey agricultural drainage from the western San Joaquin Valley to the North Bay (Suisun Bay, Carquinez Strait, and San Pablo Bay); (2) allow...
Kevin C. Vining, Steven W. Cates
2006, Open-File Report 2006-1144
Available surface-water quality, ground-water quality, and water-withdrawal data for the Spirit Lake Reservation were summarized. The data were collected intermittently from 1948 through 2004 and were compiled from U.S. Geological Survey databases, North Dakota State Water Commission databases, and Spirit Lake Nation tribal agencies. Although the quality of surface water...
Melanie L. Clark, Jon P. Mason
2006, Scientific Investigations Report 2006-5113
The U.S. Geological Survey, in cooperation with the Wyoming Department of Environmental Quality, monitors streams throughout the Powder River structural basin in Wyoming and parts of Montana for potential effects of coalbed natural gas development. Specific conductance and sodium-adsorption ratios may be larger in coalbed waters than in stream waters...
G.D. Myren, M.J.S. Johnston, R.J. Mueller
2006, Open-File Report 2006-1103
In response to concerns about the potential hazard of Mauna Loa volcano in Hawaii, the USGS began efforts in 1998 to add four high-resolution borehole sites. Located at these sites are; strainmeters, tiltmeters, seismometers, accelerometers and other instrumentation. These instruments are capable of providing continuous monitoring of the magma movement...
Bruce A. Campbell, David A. Clark
2006, Scientific Investigations Map 2897
The Magellan spacecraft orbited Venus from August 10, 1990, until it plunged into the Venusian atmosphere on October 12, 1994. Magellan Mission objectives included (1) improving the knowledge of the geological processes, surface properties, and geologic history of Venus by analysis of surface radar characteristics, topography, and morphology and (2)...