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Ground-water conditions in Georgia, 1999
Alan M. Cressler
2000, Open-File Report 2000-151
Ground-water conditions in Georgia during 1999 and for the period of record were evaluated using data from U.S. Geological Survey ground-water-level and ground-water-quality monitoring networks. Data for 1999 included in this report are from continuous water-level records from 130 wells and chloride analyses from 14 wells. Data from one well...
Procedures for scour assessments at bridges in Pennsylvania
Peter J. Cinotto, Kirk E. White
2000, Open-File Report 2000-64
Scour is the process and result of flowing water eroding the bed and banks of a stream. Scour at nearly 14,300 bridges(1) spanning water, and the stability of river and stream channels in Pennsylvania, are being assessed by the U.S. Geological Survey (USGS) in cooperation with the Pennsylvania Department of...
Water-quality data for streams in the Boulder River Watershed, Jefferson County, Montana
David A. Nimick, Thomas E. Cleasby
2000, Open-File Report 2000-99
Chemical data were collected in the Boulder River watershed of southwestern Montana during 1996-99 as part of a detailed interdisciplinary study characterizing the effects of historical inactive mines on streams in the watershed. This report presents water-quality data collected by the U.S. Geological Survey for physical properties, major ions, nutrients,...
Magnetic susceptibilities of minerals
Sam Rosenblum, I. K. Brownfield
2000, Open-File Report 99-529
Magnetic separation of minerals is a topic that is seldom reported in the literature for two reasons. First, separation data generally are byproducts of other projects; and second, this study requires a large amount of patience and is unusually tedious. Indeed, we suspect that most minerals probably are never investigated...
Surveys of water velocities in the vicinity of the discharge-release gates of Salamonie Lake Dam, northeastern Indiana, spring and winter 1998
Scott E. Morlock, James A. Stewart
2000, Open-File Report 99-228
Two water-velocity surveys in the vicinity of the discharge-release gates were performed at the Salamonie Lake flood-control reservoir in northeastern Indiana during periods of high-discharge release. One survey was done in the spring when the reservoir pool was at high elevation; the other survey was in the winter when the...
Preliminary potential-field constraints on the geometry of the San Fernando basin, Southern California
Victoria E. Langenheim, Andrew Griscom, R.C. Jachens, T.G. Hildenbrand
2000, Open-File Report 2000-219
Gravity and magnetic data provide new insights on the structural underpinnings of the San Fernando Basin region, which may be important to ground motion models. Gravity data indicate that a deep basin (>5 km) underlies the northern part of the San Fernando Valley; this deep basin is required to explain...
Water-quality assessment of the Eastern Iowa Basins: Hydrologic and biologic data, October 1996 through September 1998
Kimberlee K. Akers, Denise L. Montgomery, Daniel E. Christiansen, Mark E. Savoca, Douglas J. Schnoebelen, Kent Becher, Eric M. Sadorf
2000, Open-File Report 2000-67
Hydrologic and biologic data collected from October 1996 through September 1998 in the Eastern Iowa Basins study unit of the U.S. Geological Survey National Water-Quality Assessment Program are presented in this report. Monthly data collected from 12 sites on rivers and streams included measurements of physical properties and determinations of...
Estuarine water-quality and sediment data, and surface-water and ground-water-quality data, Naval Submarine Base Kings Bay, Camden County, Georgia, January 1999
David C. Leeth, Owen G. Holloway
2000, Open-File Report 2000-75
In January 1999, the U.S. Geological Survey collected estuarine-water, estuarine-sediment, surface-water, and ground-water quality samples in the vicinity of Naval Submarine Base Kings Bay, Camden County, Georgia. Data from these samples are used by the U.S. Navy to monitor the impact of submarine base activities on local water resources. Estuarine...
Solar electric power for instruments at remote sites
P.J. McChesney
2000, Open-File Report 2000-128
Small photovoltaic (PV) systems are the preferred method to power instruments operating at permanent locations away from the electric power grid. The low-power PV power system consists of a solar panel or small array of panels, lead-acid batteries, and a charge controller. Even though the small PV power system is simple,...
Trace elements and semi-volatile organic compounds in bed sediments from streams and impoundments at Fort Gordon, Georgia
James B. McConnell, T. C. Stamey, H.H. Persinger Jr., K.W. McFadden
2000, Open-File Report 2000-87
In May 1998, the U.S. Geological Survey, in cooperation with the Environmental and Natural Resources Management Office of the U.S. Army Signal Center and Fort Gordon, investigated the presence and disbursal of trace elements and semi-volatile organic compounds in bed sediments from selected streams and impoundments at the Fort Gordon...