Recent increases in atmospheric deposition of mercury to North-Central Wisconsin lakes inferred from sediment analyses
R.G. Rada, J.G. Wiener, M.R. Winfrey, D.E. Powell
1989, Archives of Environmental Contamination and Toxicology (18) 175-181
Profiles of total mercury (Hg) concentrations in sediments were examined in 11 lakes in north-central Wisconsin having a broad range of pH (5.1 to 7.8) and alkalinity (-12 to 769 μeq/L). Mercury concentrations were greatest in the top 15 cm of the cores and were much lower...
Diel drift of Chironomidae larvae in a pristine Idaho mountain stream
L. J. Tilley
1989, Hydrobiologia (174) 133-149
Simultaneous hourly net collections in a meadow and canyon reach of a mountain stream determined diel and spatial abundances of drifting Chironomidae larvae. Sixty-one taxa were identified to the lowest practical level, 52 in the meadow and 41 in the canyon. Orthocladiinae was the most abundant subfamily with 32 taxa...
Seepage through a hazardous-waste trench cover
R. W. Healy
1989, Journal of Hydrology (108) 213-234
Water movement through a waste-trench cover under natural conditions at a low-level radioactive waste disposal site in northwestern Illinois was studied from July 1982 to June 1984, using tensiometers, a moisture probe, and meteorological instruments. Four methods were used to estimate seepage: the Darcy, zero-flux plane, surface-based water-budget, and groundwater-based...
An analysis of trichloroethylene movement in groundwater at Castle Air Force Base, California
L. Avon, J.D. Bredehoeft
1989, Journal of Hydrology (110) 23-50
A trichloroethylene (TCE) plume has been identified in the groundwater under a U.S. Air Force Base in the Central Valley of California. An areal, two-dimensional numerical solute transport model indicates that the movement of TCE due to advection, dispersion, and linear sorption is simulated over a 25-year historic period. The...
Effects of variations in recharge on groundwater quality
Donald O. Whittemore, K.M. McGregor, G.A. Marotz
1989, Journal of Hydrology (106) 131-145
The predominant regional effect of recharge on municipal groundwater quality in Kansas is the dilution of mineralized water in aquifers with relatively shallow water tables. The individual dissolved constituents contributing most to the water-quality variations are sulfate and chloride, and the calcium and sodium accompanying them, which are derived from...
Analysis of the shallow groundwater flow system near Connetqout Brook, Long Island, New York
K. R. Prince, T. E. Reilly, O.L. Franke
1989, Journal of Hydrology (107) 223-250
Streamflow on Long Island is derived principally from shallow groundwater that flows above the deeper regional flow system. The movement of shallow groundwater was studied during 1975-1982 at Connetquot Brook - an undisturbed stream in Connetquot River State Park - in south-central Long Island. The investigation encompassed: (1) field studies...
Reconnaissance estimates of natural recharge to desert basins in Nevada, U.S.A., by using chloride-balance calculations
M. D. Dettinger
1989, Journal of Hydrology (106) 55-78
A chloride-balance method for estimating average natural recharge to groundwater basins in the Basin and Range Province of the western United States may be a useful alternative or complement to current techniques. The chloride-balance method, as presented in this paper, equates chloride in recharge water and runoff to chloride deposited...
Sediment concentration versus water discharge during single hydrologic events in rivers
G. P. Williams
1989, Journal of Hydrology (111) 89-106
Relations between sediment concentration (C) and water discharge (Q) for a hydrologic event, such as a flood, are studied qualitatively by analyzing "smoothed" temporal graphs (discharge and concentration vs. time) in terms of mode, spread, and skewness. Comparing C Q ratios at a given discharge on the rising and falling...
An operational GLS model for hydrologic regression
Gary D. Tasker, J.R. Stedinger
1989, Journal of Hydrology (111) 361-375
Recent Monte Carlo studies have documented the value of generalized least squares (GLS) procedures to estimate empirical relationships between streamflow statistics and physiographic basin characteristics. This paper presents a number of extensions of the GLS method that deal with realities and complexities of regional hydrologic data sets that were not...
Diffusion and consumption of methane in an unsaturated zone in north-central Illinois, U.S.A.
Robert G. Striegl, A. L. Ishii
1989, Journal of Hydrology (111) 133-143
The distribution of CH4 in unsaturated glacial and eolian deposits adjacent to buried low-level radioactive waste was measured, and movement of the gas from the waste source was simulated using a two-dimensional finite-difference model for gas diffusion in the unsaturated zone. Mean PCH4 was greatest (1.56 Pa) in a pebbly-sand deposit 11.6 m...
Water quality and supply on Cortina Rancheria, Colusa County, California
E.B. Yates
1989, Water-Resources Investigations Report 89-4004
Cortina Rancheria covers an area of 1 sq mi in Colusa County, California, near the western edge of the Sacramento Valley. Local sources of water for residents of the rancheria are of poor quality or limited availability. Domestic needs are presently met by water from a hand-dug well and from...
Summary of water-resources activities of the U.S. Geological Survey in Colorado– Fiscal year 1989
P. A. Griffith
1989, Open-File Report 89-588
The biennial summary of water resources activities in Colorado is presented for fiscal year 1989. The report includes an introduction of these activities and names of the management personnel to whom information requests may be addressed, a summary of the U.S. Geological Survey mission and of the Water Resources Division...
Analysis of the effect of pumping on ground-water flow in the Springfield Plateau and Ozark aquifers near Springfield, Missouri
J. L. Imes
1989, Water-Resources Investigations Report 89-4079
Pumpage of water from the Ozark aquifer for public supply and industry use by the city of Springfield and surrounding communities in southwestern Missouri has significantly altered the potentiometric surface of the aquifer. Springfield is located on a regional groundwater divide that trends east and west across southern Missouri. Groundwater...
Hydrologic data for Paleozoic rocks in the upper Colorado River basin, Colorado, Utah, Wyoming, and Arizona
Arthur L. Geldon
1989, Open-File Report 89-59
This report contains data used to interpret the hydrology of Paleozoic rocks in the Upper Colorado River Basin under the U.S. Geological Survey 's Regional Aquifer-System Analysis program. The study area includes the drainages of the Green and Colorado Rivers from their headwaters to Lees Ferry, Arizona. Hydrologic data presented...
Functional requirements of computer systems for the U.S. Geological Survey, Water Resources Division, 1988-97
R.M. Hathaway, J.M. McNellis
1989, Open-File Report 89-274
Investigating the occurrence, quantity, quality, distribution, and movement of the Nation 's water resources is the principal mission of the U.S. Geological Survey 's Water Resources Division. Reports of these investigations are published and available to the public. To accomplish this mission, the Division requires substantial computer technology to process,...
Water-related scientific activities of the U.S. Geological Survey in Nevada, fiscal years 1985-89
Kathryn C. Kilroy (compiler)
1989, Open-File Report 89-264
The U.S. Geological Survey has been collecting water resources data in Nevada since 1890. Most of the projects in the current Nevada District program can be classified as either basic-data acquisition (about 25%) or hydrologic interpretation (about 75 %). About 52% of the activities are supported by cooperative agreements with...
Preparation of average annual runoff map of the United States, 1951-80
W.R. Krug, W.A. Gebert, D.J. Graczyk
1989, Open-File Report 87-535
Average annual runoff was computed or estimated for 2,148 hydrologic cataloging units in the United States and Puerto Rico , for the period 1951-80. Runoff was computed from the recorded streamflow at 5,951 U.S. Geological Survey gaging stations. The runoff at more than 3,000 of these stations was estimated by...
Review of edgematchimg procedures for digital cartographic data used in Geographic Information Systems (GIS)
D.D. Nebert
1989, Open-File Report 89-579
In the process of developing a continuous hydrographic data layer for water resources applications in the Pacific Northwest, map-edge discontinuities in the U.S. Geological Survey 1:100 ,000-scale digital data that required application of computer-assisted edgematching procedures were identified. The spatial data sets required by the project must have line features...
Hydrogeologic data for the Canal Creek area, Aberdeen Proving Ground, Maryland, April 1986-March 1988
J.P. Oliveros, Patrice Gernhardt
1989, Open-File Report 89-387
This report is a compilation of hydrologic and geologic data collected for the period April 1986 through March 1988 for the Canal Creek area of Aberdeen Proving Ground, Maryland. Geologic data include lithologic logs for 73 sites and geophysical logs for 71 sites. Hydrologic data consist of hydrographs and synoptic...
Results of qualification tests on water-level sensing instruments, 1987
T.E. Olive
1989, Open-File Report 89-397
The U.S. Geological Survey 's Hydrologic Instrumentation Facility at the Stennis Space Center, Mississippi, conducts qualification tests on water level sensing instruments. Instrument systems, which meet or exceed the Survey 's minimum performance requirements, are placed on the Survey 's Qualified Products List. The qualification tests conducted in 1987 added...
Ground-water quality assessment of the central Oklahoma aquifer, Oklahoma - Analysis of available water-quality data through 1987
David L. Parkhurst, Scott C. Christenson, Jamie L. Schlottmann
1989, Open-File Report 88-728
Beginning in 1986, the Congress annually has appropriated funds for the U.S. Geological Survey to test and refine concepts for a National Water-Quality Assessment (NAWQA) Program. The long-term goals of a full-scale program would be to:Provide a nationally consistent description of current water-quality conditions for a large part of the...
Potentiometric surface of the principal aquifer and hydrologic conditions in the Ponce-Juana Diaz area, Puerto Rico, April-May, 1987
Felix Rodriguez-del-Rio, Vicente Quinones-Aponte
1989, Water-Resources Investigations Report 89-4115
Miscellaneous streamflow measurements in the State of Washington, January 1961 to September 1985
John R. Williams, S.A. Riis
1989, Open-File Report 89-380
This report is a compilation of previously published miscellaneous streamflow measurements made in Washington State by the U.S. Geological Survey between January 1961 and September 1985. It is a supplement to a volume of similar data for the period 1890 to January 1961. The data include stream name and stream...
Summary of hydrologic data for the San Gabriel River basin and Edwards Aquifer, Georgetown area, Texas, water year 1988
Larry F. Land, M.E. Dorsey
1989, Open-File Report 89-226
The Edwards aquifer is the principle source of freshwater for municipal, domestic, and industrial users in the Georgetown area. Other sources of freshwater are the streams draining the San Gabriel River basin and Lake Georgetown. Lake Georgetown, located on the North Fork San Gabriel River west of Georgetown, is a...
Physical and chemical data from two water-quality surveys of streams in the Lewisville Lake watershed, north-central Texas, 1984 and 1985
W. Scott Gain
1989, Open-File Report 89-258
Physical and chemical water-quality data and nitrogen and phosphorus yields for 29 sites sampled in two synoptic surveys of streams within the Lewisville Lake watershed are presented in this report. The two synoptic surveys were conducted in March 1984 and March 1985, as a reconnaissance and assessment of water quality...
