Dissolved nutrient and suspended particulate matter data for the San Francisco Bay estuary, California, October 1988 through September 1991
Stephen W. Hager
1993, Open-File Report 93-57
The U.S. Geological Survey conducted hydrologic investigations in San Francisco Bay during Water Years 1988, 1989, 1990 and 1991. Dissolved inorganic plant nutrients, nitrate, nitrite, ammonium, silica, and reactive phosphorus were measured in surface and in near-bottom waters at previously established locations in both northern and southern reaches of the...
Delineation of recharge areas for selected wells in the St. Peter-Prairie du Chien-Jordan aquifer, Rochester, Minnesota
G. N. Delin, James Edward Almendinger
1993, Water Supply Paper 2397
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 wells (greater than about...
Hydrology, vegetation, and soils of four north Florida River flood plains with an evaluation of state and federal wetland determinations
H.M. Light, M. R. Darst, M.T. MacLaughlin, S.W. Sprecher
1993, Water-Resources Investigations Report 93-4033
A study of hydrologic conditions, vegetation, and soils was made in wetland forests of four north Florida streams from 1987 to 1990. The study was conducted by the U.S. Geological Survey in cooperation with the Florida Department of Environmental Regulation to support State and Federal efforts to improve wetland delineation...
Numerical simulation of ground-water flow in the central part of the western San Joaquin Valley, California
Kenneth Belitz, Steven P. Phillips, Jo Ann M. Gronberg
1993, Water Supply Paper 2396
The occurrence of selenium in agricultural drain water in the central part of the western San Joaquin Valley, California, has focused concern on strategies for managing shallow, saline ground water. To assess alternatives to agricultural drains, a three-dimensional, finite-difference numerical model of the regional groundwater flow system was developed. This...
Hydrogeology, simulated ground-water flow, and ground-water quality, Wright-Patterson Air Force Base, Ohio
D.H. Dumouchelle, C. W. Schalk, G.L. Rowe, J.T. De Roche
1993, Water-Resources Investigations Report 93-4047
Ground water is the primary source of water in the Wright-Patterson Air Force Base area. The aquifer consists of glacial sands and gravels that fill a buried bedrock-valley system. Consolidated rocks in the area consist of poorly permeable Ordovician shale of the Richmondian stage, in the upland areas, the Brassfield...
Age dating ground water by use of chlorofluorocarbons (CCl3F and CCl2F2), and distribution of chlorofluorocarbons in the unsaturated zone, Snake River Plain Aquifer, Idaho National Engineering Laboratory, Idaho
Eurybiades Busenberg, E.P. Weeks, Niel Plummer, R. C. Bartholomay
1993, Water-Resources Investigations Report 93-4054
No abstract available. ...
Impact of the Summitville Mine on irrigation water, agricultural soils, and alfalfa in the southwestern San Luis Valley, Colorado
J. A. Erdman, K. S. Smith
1993, Open-File Report 93-616
No abstract available....
Particulate organic matter in the San Francisco Bay estuary, California: Chemical indicators of its origin and assimilation into the benthic food web
J. E. Cloern, E. A. Canuel, S.M. Wienke
1993, Open-File Report 93-146
No abstract available....
Hydrologic data for the lower Copper River, Alaska, May to September 1992
T. P. Brabets
1993, Open-File Report 93-162
Annual yield and selected hydrologic data for the Arkansas River basin compact: Arkansas-Oklahoma 1992 water year
C. S. Barks, R.L. Blazs, S. T. Touschner
1993, Open-File Report 93-171
No abstract available....
Water-resources activities, North Dakota District, Fiscal Year 1992
1993, Open-File Report 93-52
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 water-resources activities of the Water Resources...
Water resources activities of the USGS, 1992
E. T. Smith (compiler)
1993, Open-File Report 92-117
The Water Resources Division (WRD) of the U.S. Geological Survey has the principal responsibility within the Federal Government for providing hydrologic information and appraising the Nation's water resources. The USGS is unique among government organizations because it has neither regulatory nor developmental authority. Information that is made available equally to...
Trace metals in clams (Macoma balthica) and sediments at the Palo Alto mudflat in south San Francisco Bay: June, 1993-May, 1993
S. N. Luoma, D.J. Cain, C. L. Brown, Michelle I. Hornberger
1993, Open-File Report 93-500
No abstract available....
Hydrologic research in the Shingobee River headwaters area, Minnesota
D.O. Rosenberry, J. W. LaBaugh, T.M. McConnaughey, Robert G. Striegl, T. C. Winter
1993, Open-File Report 93-446
Ground-water quality at the Management Systems Evaluation Area (MSEA) near Princeton, Minnesota, 1991
Matthew K. Landon, Geoffrey N. Delin, J.A. Lamb, Laodong Guo
1993, Open-File Report 93-43
The northern cornbelt sand-plains Management Systems Evaluation Area (MSEA) program is a multiagency, multistate initiative to evaluate the effects of modified and prevailing fanning systems on water quality in a sand-plain area in Minnesota and at satellite areas in North and South Dakota, and Wisconsin (Delin and others, 1992). The...
Study guide for a beginning course in ground-water hydrology
O.L. Franke, T. E. Reilly, H. T. Buxton, D. L. Simmons
1993, Open-File Report 92-637
No abstract available....
Bibliography of Oklahoma hydrology; reports prepared by the U.S. Geological Survey and principal cooperating agencies, 1901-93
J. S. Havens (compiler)
1993, Open-File Report 93-448
This bibliography lists reports on hydrology in Oklahoma prepared by the U.S. Geological Survey and the principal State cooperating agencies, the Oklahoma Geological Survey and the Oklahoma Water Resources Board. Included are citations of about 550 reports, abstracts, and journal articles issued from 1901 through July 1993. The reports are...
Hydrology of valley fill and potential for additional ground-water withdrawals along the north flank of the Little Rocky Mountains, Fort Belknap Indian Reservation, north-central Montana
D.W. Briar, P.K. Christensen, D.J. Oellermann
1993, Water-Resources Investigations Report 92-4162
Water Resources Data, Florida, Water Year 1992. Volume 2B. South Florida Ground Water
W.J. Haire, A.C. Lietz
1993, Water Data Report FL-92-2B
This volume of the annual hydrologic data report of Florida is one of a series of annual reports that document hydrologic data gathered from the U.S. Geological Survey's surface- and ground-water data-collection networks in each State, Puerto Rico, and the Trust Territories. These records of streamflow, ground-water levels, and quality...
Simulated hydrologic responses of the Quashnet River stream-aquifer system to proposed ground-water withdrawals, Cape Cod, Massachusetts
P. M. Barlow, K.M. Hess
1993, Water-Resources Investigations Report 93-4064
An investigation of the Quashnet River stream- aquifer system on Cape Cod was initiated in response to concern over possible streamflow reduction and degradation of the sea-run brown trout habitat of the river resulting from proposed ground-water withdrawals. A two-layer finite-difference ground-water-flow model was developed to simulate the stream-aquifer system....
The Loma Prieta, California, earthquake of October 17, 1989: Preseismic observations
Malcolm J. S. Johnston, Jean A. Olson, David P. Hill, Anthony C. Fraser-Smith, Arman Bernardi, Robert A. Helliwell, Paul R. McGill, O.G. Villard Jr., Robert J. Mueller, Randall A. White, William L. Ellsworth, Evelyn A. Roeloffs, Alan T. Linde, M. T. Gladwin, R. L. Gwyther, R.H.G. Hart, Michael Lisowski, James C. Savage, William H. Prescott, Jerry L. Svarc, Mark Hunter Murray, P.G. Silver, N. J. Valette-Silver, Olga Kolbek
Malcolm J. S. Johnston, editor(s)
1993, Professional Paper 1550-C
The October 17, 1989, Loma Prieta, Calif., Ms=7.1 earthquake provided the first opportunity in the history of fault monitoring in the United States to gather multidisciplinary preearthquake data in the near field of an M=7 earthquake. The data obtained include observations on seismicity, continuous strain, long-term ground displacement, magnetic field,...
Water resources data, Nevada, water year 1992
D.L. Hess, K.A. Mello, R.J. Sexton, R.L. Young
1993, Water Data Report NV-92-1
This report for Nevada is one of a series of annual reports that document hydrologic data gathered from the U.S. Geological Survey's surface-water and ground-water data-collection networks in each State, Puerto Rico, and the Trust Territories. These records of streams, canals, drains and springs, lakes and reservoirs, and observation wells...
Geohydrologic systems in Kansas, geohydrology of the Great Plains aquifer system
Harold E. McGovern, R. J. Wolf
1993, Hydrologic Atlas 722-G
Sedimentary rocks of Late Cambrian through Early Cretaceous age in Kansas are part of a regional flow system of hydraulically connected aquifers and confining units. Future demands for water require that these deeply buried rocks be studied to describe hydrologic properties and ground-water-flow conditions and to provide information that will...
Hydrologic data collected in Maumelle and Winona reservoir systems, central Arkansas, May 1989 through October 1992
W. Reed Green, Bobbie L. Louthian
1993, Open-File Report 93-122
Physical, chemical, and biological water-quality data were collected and compiled for sites located in the Lakes Maumelle and Winona reservoir systems May 5, 1989, to October 30, 1992. Data were collected in order to establish a comprehensive water-quality data base for the two systems and will be used in water-quality...
Simulation of changes in water levels and ground-water flow in response to water-use alternatives in the Mud Lake area, eastern Snake River plain, eastern Idaho
Joseph M. Spinazola
1993, Water-Resources Investigations Report 93-4228
Water users rely on surface and ground water to irrigate crops and maintain wildlife refuges in the 2,200-square-mile Mud Lake study area. Water managers need the ability to evaluate the effects of water-use changes on the future supply of surface and ground water. A five-layer, three-dimensional, finite-difference, numerical ground-water flow...
