The behavior of rare earth elements in naturally and anthropogenically acidified waters
Scott A. Wood, Chris Gammons, Stephen R. Parker
2006, Journal of Alloys and Compounds (418) 161-165
In this paper, the behavior of rare earth elements (REE) in a watershed impacted by acid-mine drainage (Fisher Creek, Montana) is compared to that in a volcanically acidified watershed (Rio Agrio and Lake Caviahue, Argentina). The REE behave conservatively in acidic waters with pH values less than approximately 5.5. However,...
Hydrogeology of the upper and middle Verde River watersheds, central Arizona
Kyle W. Blasch, John P. Hoffmann, Leslie F. Graser, Jeannie R. Bryson, Alan L. Flint
2006, Scientific Investigations Report 2005-5198
The upper and middle Verde River watersheds in central Arizona are primarily in Yavapai County, which in 1999 was determined to be the fastest growing rural county in the United States; by 2050 the population is projected to more than double its current size (132,000 in 2000). This study combines...
Simulation of nutrient and sediment concentrations and loads in the Delaware inland bays watershed: Extension of the hydrologic and water-quality model to ungaged segments
Angelica L. Gutierrez-Magness
2006, Scientific Investigations Report 2006-5038
Rapid population increases, agriculture, and industrial practices have been identified as important sources of excessive nutrients and sediments in the Delaware Inland Bays watershed. The amount and effect of excessive nutrients and sediments in the Inland Bays watershed have been well documented by the Delaware Geological Survey, the Delaware Department...
A thermal profile method to identify potential ground-water discharge areas and preferred salmonid habitats for long river reaches
J. J. Vaccaro, K.J. Maloy
2006, Scientific Investigations Report 2006-5136
The thermal regime of riverine systems is a major control on aquatic ecosystems. Ground water discharge is an important abiotic driver of the aquatic ecosystem because it provides preferred thermal structure and habitat for different types of fish at different times in their life history. In large diverse river basins...
Simulation of selected ground-water pumping scenarios at Fort Stewart and Hunter Army Airfield, Georgia
Gregory S. Cherry
2006, Open-File Report 2006-1148
A regional MODFLOW ground-water flow model of parts of coastal Georgia, Florida, and South Carolina was used to evaluate the effects of current and hypothetical groundwater withdrawal, and the relative effects of pumping in specific areas on ground-water flow in the Upper Floridan aquifer near Fort Stewart and Hunter Army...
A system for calibrating seepage meters used to measure flow between ground water and surface water
Donald O. Rosenberry, Michael A. Menheer
2006, Scientific Investigations Report 2006-5053
A system has been developed for generating controlled rates of seepage across the sediment-water interface representing flow between ground water and surface water. The seepage- control system facilitates calibration and testing of seepage measurement devices commonly called seepage meters. Two slightly different seepage-control systems were evaluated. Both designs make use...
Questa baseline and pre-mining ground-water quality investigation. 21. Hydrology and water balance of the Red River Basin, New Mexico, 1930-2004
Cheryl A. Naus, Douglas P. McAda, Nathan C. Myers
2006, Scientific Investigations Report 2006-5040
A study of the hydrology of the Red River Basin of northern New Mexico, including development of a pre- mining water balance, contributes to a greater understanding of processes affecting the flow and chemistry of water in the Red River and its alluvial aquifer. Estimates of mean annual precipitation for...
Regionalized equations for bankfull-discharge and channel characteristics of streams in New York State—Hydrologic Region 7 in western New York
Christiane I. Mulvihill, Anne G. Ernst, Barry P. Baldigo
2006, Scientific Investigations Report 2006-5075
Computation of bankfull discharge and channel dimensions (width, depth, and cross-sectional area) at ungaged sites requires equations that relate bankfull discharge and channel dimensions to drainage-area at gaged sites. Bankfull-channel information commonly is needed for watershed assessments, stream channel classification, and the design of stream-restoration projects. Such equations are most...
Water quality and relation to taste-and-odor compounds in the North Fork Ninnescah River and Cheney Reservoir, south-central Kansas, 1997-2003
Victoria G. Christensen, Jennifer L. Graham, Chad R. Milligan, Larry M. Pope, Andrew C. Ziegler
2006, Scientific Investigations Report 2006-5095
Cheney Reservoir, the primary water supply for the city of Wichita in south-central Kansas, and its main source of inflow, the North Fork Ninnescah River, were sampled between 1997 and 2003 for sediment, nutrients, and the taste-and-odor-causing compounds geosmin and 2-methylisoborneol (MIB). It is believed that objectionable tastes and odors...
Ground-water levels near the top of the water-table mound, western Cape Cod, Massachusetts, 2002-04
Andrew J. Massey, Carl S. Carlson, Denis R. LeBlanc
2006, Scientific Investigations Report 2006-5054
In January 2002 the U.S. Geological Survey began continuous water-level monitoring in three wells in the vicinity of the Southeast Ranges of Camp Edwards, near the Impact Area of the Massachusetts Military Reservation on Cape Cod. The purpose of this effort was to examine how water levels at sites with...
Geohydrological characterization, water-chemistry, and ground-water flow simulation model of the Sonoma Valley area, Sonoma County, California
Christopher D. Farrar, Loren F. Metzger, Tracy Nishikawa, Kathryn M. Koczot, Eric G. Reichard, Victoria E. Langenheim
2006, Scientific Investigations Report 2006-5092
The Sonoma Valley, located about 30 miles north of San Francisco, is one of several basins in Sonoma County that use a combination of ground water and water delivered from the Russian River for supply. Over the past 30 years, Sonoma Valley has experienced rapid population growth and land-use changes....
Hydrogeophysical tracking of three‐dimensional tracer migration: The concept and application of apparent petrophysical relations
Kamini Singha, Steven M. Gorelick
2006, Water Resources Research (42)
Direct estimation of groundwater solute concentrations from geophysical tomograms has been only moderately successful because (1) reconstructed tomograms are often highly uncertain and subject to inversion artifacts, (2) the range of subsurface conditions represented in data sets is incomplete because of the paucity of colocated well or core data and...
The Everglades Depth Estimation Network (EDEN) for Support of Ecological and Biological Assessments
Pamela A. Telis
2006, Fact Sheet 2006-3087
The Everglades Depth Estimation Network (EDEN) is an integrated network of real-time water-level monitoring, ground-elevation modeling, and water-surface modeling that provides scientists and managers with current (1999-present), online water-depth information for the entire freshwater portion of the Greater Everglades. Presented on a 400-square-meter grid spacing, EDEN offers a consistent and...
Aquifer-test data for wells H-1, H-2A, H-2B, H-2C, and H-3 at the Waste Isolation Pilot Plant, southeastern New Mexico
G. F. Huff, Angela Gregory
2006, Open-File Report 2006-1129
A series of aquifer tests was performed by the U.S. Geological Survey on geologic units of Permian age at the Waste Isolation Pilot Plant site between February 1979 and July 1980 in wells H-1, H-2 complex (H-2A, H-2B, and H-2C), and H-3. The tested geologic units included the Magenta Dolomite...
Effects of roads and well pads on erosion in the Largo Canyon watershed, New Mexico, 2001-02
Anne Marie Matherne
2006, Scientific Investigations Report 2006-5039
Largo Canyon, located in the San Juan Basin of northwestern New Mexico, is one of the longest dry washes in the world. Oil and gas production in the San Juan Basin, which began in the 1940's, required the development of an extensive network of dirt roads to service the oil...
Potentiometric surface of the Upper Floridan aquifer in the Ichetucknee springshed and vicinity, northern Florida, September 2003
A. Alejandro Sepulveda, Brian G. Katz, Gary L. Mahon
2006, Open-File Report 2006-1031
The Upper Floridan aquifer is a highly permeable unit of carbonate rock extending beneath most of Florida and parts of southern Alabama, Georgia, and South Carolina. The high permeability is due in a large part to the widening of fractures that developed over time and the formation of conduits within...
Freshwater and Nutrient Fluxes to Coastal Waters of Everglades National Park - A Synthesis
Benjamin F. McPherson, Arturo E. Torres
2006, Fact Sheet 2006-3076
Freshwater in the Everglades and the Big Cypress Swamp drains south and southwest into coastal regions where it mixes with seawater to create the salinity gradients characteristic of productive estuarine and marine systems. Studies in Florida Bay have shown that over the last 100-200 years, salinity and seagrass distributions have...
Trends in streamflow of the San Pedro River, southeastern Arizona, and regional trends in precipitation and streamflow in southeastern Arizona and southwestern New Mexico
Blakemore E. Thomas, Don R. Pool
2006, Professional Paper 1712
This study was done to improve the understanding of trends in streamflow of the San Pedro River in southeastern Arizona. Annual streamflow of the river at Charleston, Arizona, has decreased by more than 50 percent during the 20th century. The San Pedro River is one of the few remaining free-flowing...
Water resources data, Montana, water year 2005: Volume 2. Yellowstone and upper Columbia River basins and ground-water levels
Wayne R. Berkas, Melvin K. White, Patricia B. Ladd, Fred A. Bailey, Kent A. Dodge
2006, Water Data Report MT-05-2
Water resources data for Montana for the 2005 water year, volumes 1 and 2, consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels in wells. This volume contains discharge records for 120 streamflow-gaging stations; stage or...
A preliminary evaluation of vertical separation between production intervals of coalbed-methane wells and water-supply wells in the Raton basin, Huerfano and Las Animas Counties, Colorado, 1999-2004
Kenneth R. Watts
2006, Scientific Investigations Report 2006-5109
The Raton Basin in southern Colorado and northern New Mexico is undergoing increased development of its coalbed-methane resources. Annual production of methane from coalbeds in the Raton Basin in Huerfano and Las Animas Counties, Colorado, increased from about 28,000,000 thousand cubic feet from 478 wells to about 80,000,000 thousand cubic...
Velocity, bathymetry, and transverse mixing characteristics of the Ohio River upstream from Cincinnati, Ohio, October 2004–March 2006
G. F. Koltun, Chad J. Ostheimer, Michael S. Griffin
2006, Open-File Report 2006-1159
Velocity, bathymetry, and transverse (cross-channel) mixing characteristics were studied in a 34-mile study reach of the Ohio River extending from the lower pool of the Captain Anthony Meldahl Lock and Dam, near Willow Grove, Ky, to just downstream from the confluence of the Licking and Ohio Rivers, near Newport, Ky....
Near-Field Receiving Water Monitoring of trace metals and a benthic community near the Palo Alto Regional Water Quality Control Plant in South San Francisco Bay, California: 2005
Daniel J. Cain, Francis Parcheso, Janet K. Thompson, Samuel N. Luoma, Allison H. Lorenzi, Edward Moon, Michelle K. Shouse, Michelle I. Hornberger, Jessica Dyke
2006, Open-File Report 2006-1152
Trace elements in sediment and the clam Macoma petalum (formerly reported as Macoma balthica (Cohen and Carlton 1995)), clam reproductive activity and benthic, macroinvertebrate community structure are reported for a mudflat one kilometer south of the discharge of the Palo Alto Regional Water Quality Control Plant in South San Francisco...
Water resources data, Montana, water year 2005: Volume 1. Hudson Bay and upper Missouri River basins
Wayne R. Berkas, Melvin K. White, Patricia B. Ladd, Fred A. Bailey, Kent A. Dodge
2006, Water Data Report MT-05-1
Water resources data for Montana for the 2005 water year, volumes 1 and 2, consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels in wells. This volume contains discharge records for 125 streamflow-gaging stations; stage or...
Mapping the seafloor geology offshore of Massachusetts
Walter A. Barnhardt, Brian D. Andrews
2006, Fact Sheet 2006-3042
Geologic and bathymetric maps help us understand the evolutionary history of the Massachusetts coast and the processes that have shaped it. The maps show the distribution of bottom types (for example, bedrock, gravel, sand, mud) and water depths over large areas of the seafloor. In turn, these two fundamental parameters...
Geology and total petroleum systems of the West-Central Coastal province (7203), West Africa
Michael E. Brownfield, Ronald R. Charpentier
2006, Bulletin 2207-B
The West-Central Coastal Province of the Sub-Saharan Africa Region consists of the coastal and offshore areas of Cameroon, Equatorial Guinea, Gabon, Democratic Republic of the Congo, Republic of the Congo, Angola (including the disputed Cabinda Province), and Namibia. The area stretches from the east edge of the Niger Delta south...
