Chemistry of selected high-elevation lakes in seven national parks in the western United States
David W. Clow, Robert G. Striegl, Leora Nanus, M. Alisa Mast, Donald H. Campbell, David P. Krabbenhoft
2002, Water, Air, and Soil Pollution: Focus (2) 139-164
A chemical survey of 69 high-altitude lakes in seven national parks in the western United States was conducted during the fallof 1999; the lakes were previously sampled during the fall of 1985, as part of the Western Lake Survey. Lakes in parks in the Sierra/southern Cascades (Lassen Volcanic, Yosemite, Sequoia/Kings...
Simulating solute transport across horizontal-flow barriers using the MODFLOW ground-water transport process
G.Z. Hornberger, Leonard F. Konikow, P. T. Harte
2002, Open-File Report 2002-52
No abstract available....
Magnetotelluric data in the middle Rio Grande basin, Albuquerque volcanoes, New Mexico
Jackie M. Williams, Brian D. Rodriguez
2002, Open-File Report 2002-44
The population in the Albuquerque-Santa Fe region of New Mexico is rapidly growing. The Santa Fe Group aquifer in the Middle Rio Grande Basin is the main source of municipal water for the greater Albuquerque metropolitan area. The capacity of this aquifer is more limited than previously thought (Thorn et...
Geologic, hydrologic, and water-quality data from multiple-well monitoring sites in the Central and West Coast basins, Los Angeles County, California, 1995-2000
Michael Land, R.R. Everett, S.M. Crawford
2002, Open-File Report 2001-277
In 1995, the U.S. Geological Survey (USGS), in cooperation with the Water Replenishment District of Southern California (WRDSC), began a study to examine ground-water resources in the Central and West Coast Basins in Los Angeles County, California. The study characterizes the geohydrology and geochemistry of the regional ground-water...
Discharge measurements using a broad-band acoustic Doppler current profiler
Michael R. Simpson
2002, Open-File Report 2001-1
The measurement of unsteady or tidally affected flow has been a problem faced by hydrologists for many years. Dynamic discharge conditions impose an unreasonably short time constraint on conventional current-meter discharge-measurement methods, which typically last a minimum of 1 hour. Tidally affected discharge can change more than 100 percent during...
Exploring the effect of drought extent and interval on the Florida snail kite: Interplay between spatial and temporal scales
Wolf M. Mooij, Robert E. Bennetts, Wiley M. Kitchens, Donald L. DeAngelis
2002, Ecological Modelling (149) 25-39
The paper aims at exploring the viability of the Florida snail kite population under various drought regimes in its wetland habitat. The population dynamics of snail kites are strongly linked with the hydrology of the system due to the dependence of this bird species on one exclusive prey species, the...
In-situ evidence for uranium immobilization and remobilization
John M. Senko, Jonathan D. Istok, Joseph M. Suflita, Lee R. Krumholz
2002, Environmental Science & Technology (36) 1491-1496
The in-situ microbial reduction and immobilization of uranium was assessed as a means of preventing the migration of this element in the terrestrial subsurface. Uranium immobilization (putatively identified as reduction) and microbial respiratory activities were evaluated in the presence of exogenous electron donors and acceptors with field push−pull tests using...
Ground-water discharge determined from measurements of evapotranspiration, other available hydrologic components, and shallow water-level changes, Oasis Valley, Nye County, Nevada
S. R. Reiner, R. J. Laczniak, G. A. DeMeo, J. LaRue Smith, P. E. Elliott, W. E. Nylund, C. J. Fridrich
2002, Water-Resources Investigations Report 2001-4239
Oasis Valley is an area of natural ground-water discharge within the Death Valley regional ground-water flow system of southern Nevada and adjacent California. Ground water discharging at Oasis Valley is replenished from inflow derived from an extensive recharge area that includes the northwestern part of the Nevada Test Site (NTS)....
Assessing five national priorities in water resources
William Wilber, C. A. Couch
2002, Water Resources Impact (4) 17-21
In 2001, the National Water-QualityAssessment (NAWQA) Program of the U.S. Geological Survey (USGS) began its second decade of studies. A total of 42 study units (major river basins and aquifers across the nation) will be reassessed in three groups of 14 on a rotating schedule. Each...
Stormflow-hydrograph separation based on isotopes: the thrill is gone--what's next?
Douglas A. Burns
2002, Hydrological Processes (16) 1515-1517
Beginning in the 1970s, the promise of a new method for separatingstormflow hydrographs...
Hydrologic controls on the subsurface transport of oil-field brine at the Osage-Skiatook Petroleum Environmental Research (OSPER) B Site, Oklahoma
William N. Herkelrath, Yousif K. Kharaka
2002, Conference Paper, 9th International Petroleum Environmental Conference
As a part of a multidisciplinary study of the impact of oil wells and oil production on the environment, we are investigating the hydrology of the OSPER B site, which is located at Skiatook Lake in Osage County, Oklahoma. Salt and crude oil from oil well brine pits and accidental...
Preliminary geophysical characterization of two oil production sites, Osage County, Oklahoma - Osage Skiatook Petroleum Environmental Research Project
Bruce D. Smith, Robert J. Bisdorf, Robert Horton, James K. Otton, Raymond S. Hutton
2002, Conference Paper, 9th International Petroleum Environmental Conference
Ground electromagnetic and dc resistivity geophysical surveys were used to interpret the subsurface distribution of salinized soil, water, and bedrock at two sites (A and B) and to characterize the larger scale hydrologic setting. Measurements were made on grids of about 1000 square meters using a very shallow penetrating (less...
Aggregate stability and size distribution
John R. Nimmo, K. Perkins
Jacob H. Dane, G. Clarke Topp, editor(s)
2002, Book chapter, Methods of soil analysis, part 4, physical methods
No abstract available. ...
Steady-state centrifuge [simultaneous determination of water transmission and retention properties--direct methods--laboratory]
John R. Nimmo, K. Perkins, A. M. Lewis
2002, Book chapter, Methods of soil analysis, part 4, physical methods
No abstract available. ...
Property-transfer models
R. Haverkamp, John R. Nimmo, P. Reggiani
2002, Book chapter, Methods in soil analysis: Part 4 physical methods
No abstract available....
Controlled liquid-volume [water retention and storage]
K.A. Winfield, John R. Nimmo
2002, Book chapter, Methods of soil analysis: Part 4 physical methods
No abstract available....
Miscellaneous methods [water retention and storage]
John R. Nimmo, K.A. Winfield
2002, Book chapter, Methods in soil analysis: Part 4 physical methods
No abstract available....
Guidelines for method selection (water retention and storage)
John R. Nimmo
2002, Book chapter, Methods of soil analysis: Part 4 physical methods
No abstract available....
Mercury(II) sorption to two Florida Everglades peat: Evidence for strong and weak binding and competition by dissolved organic matter released from the peat
R. Todd Drexel, Markus Haitzer, Joseph N. Ryan, George R. Aiken, Kathryn L. Nagy
2002, Environmental Science & Technology (36) 4058-4064
The binding of mercury(II) to two peats from Florida Everglades sites with different rates of mercury methylation was measured at pH 6.0 and 0.01 M ionic strength. The mercury(II) sorption isotherms, measured over a total mercury(II) range of 10-7.4 to 10-3.7 M, showed the competition for mercury(II) between the peat...
A comment on the use of flushing time, residence time, and age as transport time scales
Nancy E. Monsen, James E. Cloern, Lisa V. Lucas, Stephen G. Monismith
2002, Limnology and Oceanography (47) 1545-1553
Applications of transport time scales are pervasive in biological, hydrologic, and geochemical studies yet these times scales are not consistently defined and applied with rigor in the literature. We compare three transport time scales (flushing time, age, and residence time) commonly used to measure the retention of water or scalar...
Atmospheric mercury deposition during the last 270 years: A glacial ice core record of natural and anthropogenic sources
Paul F. Schuster, David P. Krabbenhoft, David L. Naftz, L. DeWayne Cecil, Mark L. Olson, John F. DeWild, David D. Susong, Jaromy R. Green, Michael L. Abbott
2002, Environmental Science & Technology (36) 2303-2310
Mercury (Hg) contamination of aquatic ecosystems and subsequent methylmercury bioaccumulation are significant environmental problems of global extent. At regional to global scales, the primary mechanism of Hg contamination is atmospheric Hg transport. Thus, a better understanding of the long-term history of atmospheric Hg cycling and quantification of the sources is...
Editors' message: The past year and thanks
Robert Schneider, Clifford I. Voss
2002, Hydrogeology Journal (10) 1-2
No abstract available....
Field and laboratory investigations of inactivation of viruses (PRD1 and MS2) attached to iron oxide-coated quartz sand
Joseph N. Ryan, Ronald W. Harvey, David W. Metge, Menachem Elimelech, Theresa Navigato, Ann P. Pieper
2002, Environmental Science & Technology (36) 2403-2413
Field and laboratory experiments were conducted to investigate inactivation of viruses attached to mineral surfaces. In a natural gradient transport field experiment, bacteriophage PRD1, radiolabeled with 32P, was injected into a ferric oxyhydroxide-coated sand aquifer with bromide and linear alkylbenzene sulfonates. In a zone of the aquifer contaminated by secondary...
Field evidence for a protistan role in an organically-contaminated aquifer
Nancy E. Kinner, Ronald W. Harvey, David M. Shay, David W. Metge, Alan Warren
2002, Environmental Science & Technology (36) 4312-4318
The association between protists, bacteria, and dissolved organic carbon (DOC) in an oxygen-depleted, 6 km-long wastewater contaminant plume within a sandy aquifer (Cape Cod, MA) was investigated by comparing abundance patterns along longitudinal and vertical transects and at a control site. Strong linear correlations were observed between unattached bacterial abundance...
Using spring-water chemistry to assess groundwater contamination and ages of shallow and deep ground water flow systems
B. G. Katz, J.K. Bohlke, D. Hornsby
2002, Book chapter, Hydrology and biology of post-paleozoic carbonate aquifers, Karst Waters Institute Special Publication 7
No abstract available....
