Ground-water levels, flow, and quality in northwestern Elkhart County, Indiana, 1980-89
R.F. Duwelius, C.A. Silcox
1991, Water-Resources Investigations Report 91-4053
Ground-water data were collected in northwestern Elkhart County, Indiana, from 1980 through 1989 to monitor hydrologic conditions and to provide information necessary for waterresources managers to evaluate the ground-water resources in this area. The area of study includes a closed industrial landfill and several areas of industrial and municipal pumping....
Predevelopment hydrology of the Salt River Indian Reservation, East Salt River Valley, Arizona
B. W. Thomsen, J.J. Porcello
1991, Water-Resources Investigations Report 91-4132
Hydrology and the hypothetical effects of reducing nutrient applications on water quality in the Bald Eagle Creek Headwaters, southeastern Pennsylvania prior to implementation of agricultural best-management practices
D. K. Fishel, M. J. Langland, M. V. Truhlar
1991, Water-Resources Investigations Report 91-4006
The report characterizes a 0.43-square-mile agricultural watershed in York County, underlain by albite-chlorite and oligoclase-mica schist in the Lower Susquehanna River basin, that is being studied as part of the U.S. Environmental Protection Agency's Chesapeake Bay Program. The water quality of Bald Eagle Creek was studied from October 1985 through...
U.S. Geological Survey research in radioactive waste disposal - Fiscal years 1986-1990
1991, Water-Resources Investigations Report 91-4084
The report summarizes progress on geologic and hydrologic research related to the disposal of radioactive wastes. The research efforts are categorized according to whether they are related most directly to: (1) high-level wastes, (2) transuranic wastes, (3) low-level and mixed low-level and hazardous wastes, or (4) uranium mill tailings. Included...
Hydrogeology and ground-water flow in the carbonate rocks of the Little Lehigh Creek basin, Lehigh County, Pennsylvania
R. A. Sloto, L.D. Cecil, L.A. Senior
1991, Water-Resources Investigations Report 90-4076
The Little Lehigh Creek basin is underlain mainly by a complex assemblage of highly-deformed Cambrian and Ordovician carbonate rocks. The Leithsville Formation, Allentown Dolomite, Beekmantown Group, and Jacksonburg Limestone act as a single hydrologic unit. Ground water moves through fractures and other secondary openings and generally is under water-table conditions....
Correlation of regional geohydrologic units to geological formations in southern Missouri
Brenda J. Smith, Jeffrey L. Imes
1991, Hydrologic Atlas 711-M
As part of the U.S Geological Survey's Regional Aquifer-System Analysis Program, geologic formations in southern Missouri (index map) were grouped into eight regional geohydrologic units on the basis of relative rock permeability and well yields (imes and Emmett, in press). Geohydrologic unit boundaries do not necessarily coincide with geologic unit...
Reconnaissance investigation of water quality, bottom sediment, and biota associated with irrigation drainage in the Riverton Reclamation Project, Wyoming, 1988-89
D. A. Peterson, T. F. Harms, Pedro Ramirez Jr., G.T. Allen, A.H. Christenson
1991, Water-Resources Investigations Report 90-4187
No abstract available....
Distribution of selected herbicides and nitrate in the Mississippi River and its major tributaries, April through June 1991
D. A. Goolsby, R.C. Coupe, D.J. Markovchick
1991, Water-Resources Investigations Report 91-4163
No abstract available....
Factors affecting the recognition of faults exposed in exploratory trenches
Manuel G. Bonilla, James J. Lienkaemper
1991, Bulletin 1947
Trenching-a widely used method for evaluating fault activity-has limitations that can mislead investigators. Some segments of fault strands in trench walls may not be visible, and this nonvisibility can lead to incorrect interpretations of time of most recent displacement and recurrence intervals on a fault. We examined the logs of...
A steady-state unsaturated-zone model to simulate pesticide transport
A. T. Rutledge, J. O. Helgesen
1991, Water-Resources Investigations Report 90-4164
No abstract available....
Summary of Geotechnical and Hydrologic Data Collected From May 1, 1990 through April 30, 1991, for the Alani-Paty Landslide, Manoa Valley, Honolulu, Hawaii
Rex L. Baum, Mark E. Reid, Cynthia A. Wilburn, Jill D. Torikai
1991, Open-File Report 91-598
Reconnaissance investigation of water quality, bottom sediment, and biota associated with irrigation drainage in the middle Arkansas River basin, Colorado and Kansas, 1988-89
D. K. Mueller, L.R. DeWeese, A.J. Garner, T.B. Spruill
1991, Water-Resources Investigations Report 91-4060
No abstract available....
Trace metals in clams (Macoma Balthica) and sediments at the Palo Alto mudflat in south San Francisco Bay: April, 1990 - April, 1991
Samuel N. Luoma, Daniel J. Cain, Cynthia Brown, Ellen V. Axtmann
1991, Open-File Report 91-460
No abstract available....
Geochemistry of ground water in alluvial basins of Arizona and adjacent parts of Nevada, New Mexico, and California
Frederick N. Robertson
1991, Professional Paper 1406-C
Chemical and isotope analyses of ground water from 28 basins in the Basin and Range physiographic province of Arizona and parts of adjacent States were used to evaluate ground-water quality, determine processes that control ground-water chemistry, provide independent insight into the hydrologic flow system, and develop information transfer. The area...
Water-resources activities, North Dakota District, fiscal year 1990
1991, Open-File Report 91-188
The mission of the U.S. Geological Survey, Water Resources Division, is to provide the hydrologic information and understanding needed for the optimum utilization and management of the Nation's water resources for the overall benefit of the people of the United States. This report describes waterresources activities of the Water Resources...
Proceedings of the United States - People's Republic of China bilateral symposium on Droughts and arid-region Hydrology, September 16-20, 1991, Tucson, Arizona
W.H. Kirby, W.Y. Tan
1991, Open-File Report 91-244
Potential hazards to water resources along a test-flight path, 1952; Possible disposal of liquid waste in a deep saline aquifer, 1954; and Hydrologic aspects of a proposed burial ground, 1965
C.V. Theis
1991, Open-File Report 91-82
Ground-water hydrology and the effects of vertical leakage and leachate migration on ground-water quality near the Shelby County landfill, Memphis, Tennessee
M. W. Bradley
1991, Water-Resources Investigations Report 90-4075
An investigation of potential leakage of leachate from the Shelby County landfill near Memphis, West Tennessee, was conducted during 1986-87. The migration of leachate from the landfill to the shallow alluvial aquifer system and the potential leakage to the deeper confined Memphis aquifer of Tertiary age were investigated. A network...
Hydrologic data for a study of pre-Illinoian glacial till in Linn County, Iowa, water year 1990
Phillip R. Bowman
1991, Open-File Report 91-459
Hydrologic data for a study of pre-lllinoian glacial till were collected during the 1990 water year at a site in Linn County, Iowa. A hydrologic-data-collection network, consisting of 22 observation wells and a meteorological station, was installed at the site to describe the hydraulic properties of the till. Recorders were...
Predevelopment hydrology of the Gila River Indian Reservation, south-central Arizona
B. W. Thomsen, J.H. Eychaner
1991, Water-Resources Investigations Report 89-4174
Partitioning of elements between two size sediment fractions in samples from nineteen areas of the Western United States
R. C. Severson, K. C. Stewart, Thelma F. Harms
1991, Open-File Report 91-381
No abstract available....
National Water-Quality Assessment Program - Western Lake Michigan Drainage Basin
J.O. Setmire
1991, Open-File Report 91-161
In 1991 , the U.S. Geological Survey (USGS) began to implement a full -scale National Water-Quality Assessment (NA WQA) program. The long-term goal of the NA WQA program are to desc ribe the tatus and trends in the quality of a large, representative part of the Nation's urface- and ground-water...
Hydrology of the Texas Gulf Coast aquifer systems
Paul D. Ryder, Ann F. Ardis
1991, Open-File Report 91-64
A complex, multilayered ground-water flow system exists in the Coastal Plain sediments of Texas. The Tertiary and Quaternary clastic deposits have an areal extent of 114,000 square miles onshore and in the Gulf of Mexico. Two distinct aquifer systems are recognized within the sediments, which range in thickness from a...
Delineation of recharge areas for selected wells in the St. Peter-Prairie du Chien-Jordan Aquifer, Rochester, Minnesota
G. N. Delin, James Edward Almendinger
1991, Open-File Report 90-397
Accurate delineation of recharge areas for wells is an important requisite to protecting ground-water quality. Zones of transport and zones of contribution are two types of recharge areas that can be delineated. Analytical-calculation, numerical-modeling, and hydrogeologic-mapping methods were used to delineate recharge areas for two high-capacity (greater than about 200...
History of the applications and development Section of the Hydrologic Instrumentation Facility, Gulf Coast Hydroscience Center, Stennis Space Center, Mississippi
S.E. Rickly
1991, Open-File Report 90-380
