Water-quality data for the Santa Clara-Calleguas hydrologic unit, Ventura County, California, October 1989 through December 1993
J. A. Izbicki, P. M. Martin, J.N. Densmore, D. A. Clark
1995, Open-File Report 95-315
More than 700 water samples were collected from 232 wells and 34 surface-water sites in the Santa Clara-Calleguas Hydrologic Unit, Ventura County, California, from October 1989 through December 1993 as part of the U.S. Geological Survey's Southern California Regional Aquifer-System Analysis study. Most samples were analyzed for major ions, nutrients,...
Geochemistry of ground water in the Gallup, Dakota, and Morrison aquifers, San Juan Basin, New Mexico
W. L. Dam
1995, Water-Resources Investigations Report 94-4253
Ground water was sampled from wells completed in the Gallup, Dakota, and Morrison aquifers in the San Juan Basin, New Mexico, to examine controls on solute concentrations. Samples were collected from 38 wells primarily from the Morrison aquifer (25 wells) in the northwestern part of the basin. A series of samples was collected...
Use of stable isotopes of carbon, nitrogen, and sulfer to identify sources of nitrogen in surface waters in the Lower Susquehanna River basin, Pennsylvania
C.A. Cravotta III
1995, Open-File Report 94-510
Stable isotopes of carbon (C), nitrogen (N), and sulfur (S) in nitrogen sources and nearby samples of topsoil, subsoil, runoff water, and stream water were measured to evaluate the feasibility of using isotopic data to identify nitrogen sources in stream water from forested, agricultural, or suburban land-use areas. Chemical and...
Relation of nitrate concentrations in ground water to well depth, well use, and land use in Franklin Township, Gloucester County, New Jersey, 1970-85
Cecilia Louise MacLeod, T. H. Barringer, E. F. Vowinkel, C. V. Price
1995, Water-Resources Investigations Report 94-4174
A water-quality data base was developed to permit the investigation of the relation of concentrations of nitrate (as nitrogen) in ground water to well depth, well use, and land use (agricultural, residential, urban nonresidential, and undeveloped) in Franklin Township. Nitrate concentrations in water from 868 wells tended to decrease with...
Ground-water-quality and ground-water-level data, Bernalillo County, central New Mexico, 1990-1993
G.E. Kues, B.M. Garcia
1995, Open-File Report 95-385
Ground-water-quality and ground-water-level data were collected in four unincorporated areas of Bernalillo County during 1990-93. Twenty wells in the east mountain area of Bernalillo County were sampled approximately monthly between January 1990 and June 1993. The water samples were analyzed for concentrations of chloride and selected nutrient species; many of the...
Geotechnical data from surface and subsurface samples outside of and within liquefaction-related ground failures caused by the October 17, 1989, Loma Prieta earthquake, Santa Cruz and Monterey counties, California
M.J. Bennett, J. C. Tinsley III
1995, Open-File Report 95-663
Geohydrology, water quality, and conceptual model of the hydrologic system Saco Landfill area, Saco, Maine
M.G. Nielsen, J. R. Stone, B. P. Hansen, J.P. Nielsen
1995, Water-Resources Investigations Report 95-4027
A geohydrologic study of the Saco Municipal Landfill in Saco, Maine, was done during 1993-94 to provide a preliminary interpretation of the geology and hydrology needed to guide additional studies at the landfill as part of the Superfund Program. The Saco Landfill, which was active from the early 1960's until...
Computation of bedrock-aquifer recharge in northern Westchester County, New York, and chemical quality of water from selected bedrock wells
Stephen W. Wolcott, Robert F. Snow
1995, Water-Resources Investigations Report 92-4157
An empirical technique was used to calculate the recharge to bedrock aquifers in northern Westchester County. This method requires delineation of ground-water divides within the aquifer area and values for (1) the extent of till and exposed bedrock within the aquifer area, and (2) mean annual runoff. This report contains...
Streamflow to the Gulf of Mexico
L. J. Judd
1995, Water-Resources Investigations Report 95-4054
Fifty-four major streams discharging directly to the Gulf of Mexico and having drainage areas exceeding 200 square miles were identified in the United States. Forty-four U.S. Geological Survey streamflow-gaging stations along the Gulf of Mexico with at least 40 years of daily streamflow data also were identified. These stations include...
Data report for onshore-offshore wide-angle seismic recordings in the Bering-Chukchi Sea, Western Alaska and eastern Siberia
Thomas M. Brocher, Richard M. Allen, David B. Stone, Lorraine W. Wolf, Brian K. Galloway
1995, Open-File Report 95-650
This report presents fourteen deep-crustal wide-angle seismic reflection and refraction profiles recorded onland in western Alaska and eastern Siberia from marine air gun sources in the Bering-Chukchi Seas. During a 20-day period in August, 1994, the R/V Ewing acquired two long (a total of 3754 km) deep-crustal seismic-reflection profiles on...
A bibliographic database of geologic hazards publications in Northern California on the World Wide Web
R. C. Schott (compiler)
1995, Open-File Report 95-661
Surface water discharge and evapotranspiration rates for grass and bare soil along a reach of the Rio Grande, Albuquerque, New Mexico, 1989-95
C. R. Thorn
1995, Open-File Report 95-419
The surface-water hydrologic system of the Rio Grande in the Albuquerque, New Mexico, area is composed of the Rio Grande; irrigation drains, laterals, canals, and ditches; evapotranspiration; and ground-water recharge. Two east-west cross sections were established to measure surface water entering the study area (north section) and exiting the study area...
Isopachs of Quaternary deposits, Fremont 1- by 2- degree Quadrangle and part of Omaha Quadrangle, Nebraska, digitized from a published 1:250,000-scale geologic map
R. B. Zelt, E.J. Patton
1995, Open-File Report 95-721
A geologic map showing the isopachs of Quaternary deposits in the Fremont and part of the Omaha, Nebraska, 1- by 2-degree quadrangles was published at a scale of 1:250,000 in 1975 (Burchett and others, 1975). This report describes the conversion of Quaternary thickness data into a digital geographic data set....
Use of surface and borehole geophysics to delineate the glacial-drift stratigraphy of northeastern St. Joseph County, Indiana
E. Randall Bayless, David B. Westjohn, Lee R. Watson
1995, Water-Resources Investigations Report 95-4041
Inverse models of direct current electrical- resistivity sounding data and normal-resistivity and natural-gamma logs were used to assist delineation of the glacial-drift stratigraphy in a 580-square- kilometer area of northeastern St. Joseph County, Indiana. Unconsolidated deposits in the study area are composed of glacial-drift, including outwash, till, and lacustrine sediments;...
Hydrogeology of the North Coast Limestone aquifer system of Puerto Rico
Jesús Rodríguez-Martínez
1995, Water-Resources Investigations Report 94-4249
The North Coast Limestone aquifer system of Puerto Rico is composed of three regional hydrogeologic units: an upper aquifer that contains an underlying saltwater zone near the coast, a middle confining unit, and a lower aquifer. The upper aquifer is unconfined, except in coastal areas where it is locally confined...
Hawaiian Volcano Observatory summary 94, Part III; Electronic tilt data, January to December 1994
G. S. Puniwai, A. J. Largo
1995, Open-File Report 95-639
Hydrology of Laguna Joyuda, Puerto Rico
Luis Santiago-Rivera, Vicente Quinones-Aponte
1995, Water-Resources Investigations Report 93-4135
A study was conducted by the U.S. Geological Survey to define the hydraulic and hydrologic characteristics of the Laguna Joyuda system (in southwestern Puerto Rico) and to determine the water budget of the lagoon. This shallow-water lagoon is connected to the sea by a single canal. Rainfall and evaporation, surface-water,...
Time-domain geoelectric soundings in Jackson Hole, Wyoming; Part B, Data
David L. Campbell, B. Thomas Nolan
1995, Open-File Report 95-675-B
Water-quality data for selected sites on Reversed, Rush, and Alger Creeks and Gull and Silver Lakes, Mono County, California, April 1994 to March 1995
Bronwen Wang, G.L. Rockwell, J. C. Blodgett
1995, Open-File Report 95-394
Water-quality data for selected sites on Reversed, Rush, and Alger Creeks and Gull and Silver Lakes, Mono County, California, were collected from April 1994 to March 1995. Water samples were analyzed for major ions and trace elements, nutrients, methylene blue active substances, and oil and grease. Field measurements were made...
Indicators of the sources and distribution of nitrate in water from shallow domestic wells in agricultural areas of the New Jersey Coastal Plain
Eric F. Vowinkel, Robert J. Tapper
1995, Water-Resources Investigations Report 93-4178
Previously collected and new water-quality data from shallow wells (screened interval less than 30 meters below the land surface) in predominantly agricultural areas of the New Jersey Coastal Plain were used to determine the relation of nitrate concentrations in shallow ground water to various hydrogeologic and land-use factors in the...
Surface-geophysical techniques used to detect existing and infilled scour holes near bridge piers
Gary Placzek, F.P. Haeni
1995, Water-Resources Investigations Report 95-4009
Surface-geophysical techniques were used with a position-recording system to study riverbed scour near bridge piers. From May 1989 to May 1993. Fathometers, fixed- and swept-frequency con- tinuous seismic-reflection profiling (CSP) systems, and a ground-penetrating radar (GPR) system were used with a laser-positioning system to measure the depth and extent of...
Water-quality assessment of the Trinity River Basin, Texas— Analysis of available information on nutrients and suspended sediment, 1974-91
Peter C. Van Metre, David C. Reutter
1995, Water-Resources Investigations Report 94-4086
The U.S. Geological Survey is conducting an assessment of water quality in the Trinity River Basin as part of the National Water-Quality Assessment Program. During the planning phase of this study, existing information on nutrients and suspended sediment was compiled and analyzed. A total of about 5,700 water-quality samples were...
Hydrogeology and water quality of the Mississippi River alluvium near Muscatine, Iowa, June 1992 through June 1994
K.J. Lucey, R.L. Kuzniar, J.P. Caldwell
1995, Water-Resources Investigations Report 95-4049
A study of the Mississippi River alluvium near Muscatine, Iowa, was conducted to evaluate ground-water flow and water quality using data collected from June 1992 through June 1994. The study area included approximately 80 square miles in parts of Muscatine and Louisa Counties in Iowa and Rock Island and Mercer...
Hydrologic data and description of a hydrologic monitoring plan for the Borax Lake area, Oregon
Tiffany Rae Schneider, William D. McFarland
1995, Open-File Report 95-367
Borax Lake is located in southeastern Oregon, within the Alvord Valley Known Geothermal Resource Area. Borax Lake is a large hot spring; there are more than 50 smaller hot springs within about one-half mile to the north of the lake. Several geothermal exploration wells have been drilled near Borax Lake,...
The surface of crystalline basement, Great Valley and Sierra Nevada, California: A digital map database
Carl M. Wentworth, G. Reid Fisher, Paia Levine, Robert C. Jachens
1995, Open-File Report 95-96
Crystalline basement in central California extends westward from the exposed Sierra Nevada beneath the sedimentary fill of the Great Valley and under the eastern edge of the Coast Ranges at mid-crustal depth. The surface of this basement is defined from three types of control: in the Sierra Nevada from the...
