Hydrologic data for the Big Spring basin, Clayton County, Iowa, water year 1991
S. J. Kalkhoff, R.L. Kuzniar
1994, Open-File Report 94-56
Hydrologic data were collected in the Big Spring Basin located in Clayton County, Iowa, during the 1991 water year. The data were collected by the U.S. Geological Survey in cooperation with the Iowa Department of Natural Resources, Geological Survey Bureau, to provide information on variation and movement of agricultural chemicals...
Hydrogeologic analysis of the saturated-zone ground-water system, under Yucca Mountain, Nevada
C. J. Fridrich, W.W. Dudley Jr., J. S. Stuckless
1994, Journal of Hydrology (154) 133-168
The configuration of the southward-sloping water table under Yucca Mountain is dominated by an abrupt decline of 300 m over a distance of less than 2 km. This northeast-striking zone of large...
Organic solute changes with acidification in Lake Skjervatjern as shown by 1H-NMR spectroscopy
Ronald L. Malcolm, T. Hayes
1994, Conference Paper, Environment International
1H-NMR spectroscopy has been found to be a useful tool to establish possible real differences and trends between all natural organic solute fractions (fulvic acids, humic acids, and XAD-4 acids) after acid-rain additions to the Lake Skjervatjern watershed. The proton NMR technique used in this study determined the spectral distribution...
Liquefaction during the 1977 San Juan Province, Argentina earthquake (Ms = 7.4)
T. L. Youd, D. K. Keefer
1994, Engineering Geology (37) 211-233
Liquefaction effects generated by the 1977 San Juan Province, Argentina, earthquake (Ms = 7.4) are described. The larger and more abundant effects were concentrated in the 60-km long band of the lowlands in the Valle del Bermejo and in an equally long band along the Rio San Juan in the...
Bibliography of selected publications approved by the U.S. Geological Survey on the water resources of New Mexico, 1975-93
O.M. Sandoval
1994, Open-File Report 94-361
This bibliography of about 500 references authored by U.S. Geological Survey employees has been compiled to assist in the study and development of water resources. The citations are dated from January 1975 to December 1993. Each citation is numbered and indexed by geographic location and discipline. Selected citations are indexed...
Major ions, nutrients, and trace elements in the Mississippi River near Thebes, Illinois, July through September 1993
Howard E. Taylor, Ronald C. Antweiler, Terry I. Brinton, David A. Roth, John A. Moody
1994, Circular 1120-D
Extensive flooding in the upper Mississippi River Basin during summer 1993 had a significant effect on the water quality of the Mississippi River. To evaluate the change in temporal distribution and transport of dissolved constituents in the Mississippi River, six water samples were collected by a discharge-weighted method from July...
Activities, programs, and cooperating agencies of the U.S. Geological Survey, Water Resources Division, Massachusetts and Rhode Island, 1994
M.C. Yurewicz
1994, Open-File Report 94-115
Modeling the effects of climate change on water resources - a review
G.H. Leavesley
1994, Climatic Change (28) 159-177
Hydrologic models provide a framework in which to conceptualize and investigate the relationships between climate and water resources. A review of current studies that assess the impacts of climate change using hydrologic models indicates a number of problem areas common to the variety of models applied. These problem areas include...
National Water-Quality Assessment Program - The Upper Mississippi River Basin
J. R. Stark
1994, Open-File Report 94-101
In 1991, the U.S. Geological Survey (USGS), U.S. Department of the Interior, began a National Water-Quality Assessment (NAWQA) program. The long-term goals of the NAWQA program are to describe the status and trends of the quality of a large, representative part of the Nation’s surfaceand ground-water resources, and to identify...
Sediment resuspension and bed armoring during high bottom stress events on the northern California inner continental shelf: Measurements and predictions
P.L. Wiberg, D.E. Drake, D.A. Cacchione
1994, Continental Shelf Research (14) 1191-1219
Geoprobe bottom tripods were deployed during the winter of 1990–1991 on the northern California inner continental shelf as part of the STRESS field experiment. Transmissometer measurements of light beam attenuation were made at two levels and current velocity was measured at...
Experimental studies of alunite: I. 18O-16O and D-H fractionation factors between alunite and water at 250-450°C
Roger E. Stoffregen, Robert O. Rye, Michael D. Wasserman
1994, Geochimica et Cosmochimica Acta (58) 903-916
We have determined oxygen and hydrogen isotope fractionation factors between alunite and water over a temperature range of 250-450??C by reacting synthetic natroalunite with 0.7 m K2SO4 -0.1 to 0.65 m H2SO4 solutions to produce K-rich alunite. From 88 to 95% alkali and isotope exchange were observed in most of...
Experimental studies of alunite: II. Rates of alunite-water alkali and isotope exchange
R.E. Stoffregen, R. O. Rye, M.D. Wasserman
1994, Geochimica et Cosmochimica Acta (58) 917-929
Rates of alkali exchange between alunite and water have been measured in hydrothermal experiments of 1 hour to 259 days duration at 150 to 400°C. Examination of run products by scanning electron microscope indicates that the reaction takes place by dissolution-reprecipitation. This exchange is modeled with an empirical rate equation...
Water-resources activities of the U.S. Geological Survey in New Mexico, fiscal year 1992
1994, Open-File Report 93-661
Awareness of our environment in general, and water resources in particular, has brought increased interest in and support of hydrologic data collection and research. The quantity, quality, and distribution of water are extremely important to the future well-being of New Mexico. The State's surface-water resources are minimal and highly variable...
Water resources data, Virginia, water year 1993; Volume 2: Ground-water level and ground-water quality records
Byron J. Prugh Jr., Eugene D. Powell
1994, Water Data Report VA-93-2
The Water Resources Division of the U.S. Geological Survey, in cooperation with State agencies, obtains a large amount of data pertaining to the water resources of Virginia each water year. These data, accumulated during many water years, constitute a valuable data base for developing an improved understanding of the water...
Surface-water-quality assessment of the upper Illinois River Basin in Illinois, Indiana, and Wisconsin; data on agricultural organic compounds, nutrients, and sediment in water, 1988-90
D. J. Sullivan, P. J. Terrio
1994, Open-File Report 93-421
This report describes the sampling design and methods and presents data collected to determine the distribution of agricultural organic compounds, nutrients, and sediment in selected areas of the upper Illinois River Basin as part of the National Water-Quality Assessment program. Four stations in small watersheds (two urban, two agricultural) were...
Measurements of leakage from Lake Michigan through three control structures near Chicago, Illinois, April-October 1993
K. A. Oberg, A.R. Schmidt
1994, Water-Resources Investigations Report 94-4112
A total of 213 measurements of leakage were made at three control structures near Chicago, Ill.--the Chicago River Controlling Works (CRCW), Thomas J. O'Brien Lock and Dam (O'Brien), and Wilmette Pumping Station (Wilmette)--using acoustic Doppler current profilers (ADCP's) and dye-dilution techniques. The CRCW consists of the Chicago Lock and two...
Acute toxicity and hazard assessment of Rodeo®, X-77 Spreader®, and Chem-Trol® to aquatic invertebrates
C. J. Henry, K. F. Higgins, K.J. Buhl
1994, Archives of Environmental Contamination and Toxicology (27) 392-399
The herbicide Rodeo® provides waterfowl managers with an effective chemical tool for creating open water habitats in wetlands if its use does not adversely affect native invertebrate communities. The survival of caged Chironomus spp. (midge), Hyalella azteca (amphipod),Stagnicola elodes (pond snail), and <i class="EmphasisTypeItalic...
Particulate, colloidal, and dissolved-phase associations of plutonium and americium in a water sample from well 1587 at the Rocky Flats Plant, Colorado
R.A. Harnish, Diane M. McKnight, James F. Ranville
1994, Water-Resources Investigations Report 93-4175
In November 1991, the initial phase of a study to determine the dominant aqueous phases that control the transport of plutonium (Pu), americium (Am), and uranium (U) in surface and groundwater at the Rocky Flats Plant was undertaken by the U.S. Geological Survey. By use of the techniques of stirred-cell...
Water-level changes in the High Plains aquifer -- Predevelopment to 1992
J. T. Dugan, T. J. McGrath, R. B. Zelt
1994, Water-Resources Investigations Report 94-4027
Changes in water levels in the High Plains aquifet underlying parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming result from the variability of precipitation, land use, and ground-water withdrawals. From the beginning of development of the High Plains aquifer to 1980, water levels declined throughout...
A water-renewal system that accurately delivers small volumes of water to exposure chambers
D. C. Zumwalt, F.J. Dwyer, I.E. Greer, C.G. Ingersoll
1994, Environmental Toxicology and Chemistry (13) 1311-1314
This paper describes a system that can accurately deliver small volumes of water (50 ml per cycle) to eight 300-ml beakers. The system is inexpensive <$100), easy to build (<8 h), and easy to calibrate (<15 min), and accurately delivers small volumes of water (<5% variability)....
Water-quality data for the Ohio River from Willow Island Dam to Belleville Dam, West Virginia and Ohio, June-October 1991
D.B. Chambers, K. F. Miller, M.C. Waldron, C.W. Falkenburg
1994, Open-File Report 93-372
This report contains water-quality data for the Ohio River from river mile 160.6 (1.1 mi upstream from Willow Island Dam) to river mile 203.6 (0.3 mi upstream from Belleville Dam) during the summer of 1991. Water quality was determined by a combi- nation of synoptic field measurements and laboratory analyses....
Water-resources activities of the U.S. Geological Survey in Nebraska, fiscal years 1993-94
A. M. Sojka (compiler), D. J. Fitzpatrick
1994, Open-File Report 94-92
Water-resources activities of the U.S. Geological Survey in Nebraska consist principally of hydro- logic data collection and local, areal, or state- wide interpretive studies. These programs are funded by cooperative agreements with State and local agencies, transfer of funds from other Federal agencies, and direct Federal funds. The data and...
Water quality assessment of Maumelle and Winona reservoir systems, central Arkansas, May 1989-October 1992
W. Reed Green
1994, Water-Resources Investigations Report 93-4218
Water quality of the Maumelle and Winona water supply reservoir systems in central Arkansas, was assessed on the basis of the data collected from May 1989 through October 1992. Water quality relative to: (1) suitability for municipal water supply; (2) other streams and reservoirs within the region; and for the...
Sources of dissolved salts in the central Murray Basin, Australia
B.F. Jones, J.S. Hanor, W.R. Evans
1994, Chemical Geology (111) 135-154
Large areas of the Australian continent contain scattered saline lakes underlain by shallow saline groundwaters of regional extent and debated origin. The normative salt composition of subsurface pore fluids extracted by squeezing cores collected during deep drilling at Piangil West 2 in the central Murray Basin in southeastern Australia, and...
Nested-model approach to investigate climate change
Lauren E. Hay, George H. Leavesley
1994, Conference Paper, Proceedings of the 21st Annual Conference on Water Policy and
Determination of the spatial and temporal distribution of precipitation in mountainous regions is critical for assessing the effects of climate variability on water resources in these regions. Potential effects of climate change on water resources in the Gunnison River basin of southwestern Colorado currently are being studied using a nested-model...
