Geology of the Stegall Mountain 7.5-minute quadrangle, Shannon and Carter Counties, south-central Missouri
Richard W. Harrison, Randall C. Orndorff, David J. Weary
2002, IMAP 2767
The bedrock exposed in the Stegall Mountain Quadrangle, Missouri, comprises Mesoproterozoic aged volcanic rocks overlain by Late Cambrian and Early Ordovician aged dolomite, sandstone, and chert. The sedimentary rocks are nearly flat-lying except where they drape around knobs of the volcanic rocks or where they...
Water-quality assessment of the Rio Grande Valley, Colorado, New Mexico, and Texas — Surface-water quality, shallow ground-water quality, and factors affecting water quality in the Rincon Valley, south-central New Mexico, 1994-95
Scott K. Anderholm
2002, Water-Resources Investigations Report 2002-4188
As part of the National Water-Quality Assessment Program, surface-water and ground-water samples were collected in 1994 and 1995 for analysis of common constituents, nutrients, dissolved organic carbon, trace elements, radioactivity, volatile organic compounds, and pesticides to characterize surface water quality and shallow ground-water quality and to determine factors affecting water...
Spatial digital database of the geologic map of Catalina Core Complex and San Pedro Trough, Pima, Pinal, Gila, Graham, and Cochise Counties, Arizona
William R. Dickinson, Douglas M. Hirschberg, G. Stephen Pitts, Karen S. Bolm
2002, Open-File Report 2002-365
The geologic map of Catalina Core Complex and San Pedro Trough by Dickinson (1992) was digitized for input into a geographic information system (GIS) by the U.S. Geological Survey staff and contractors in 2000-2001. This digital geospatial database is one of many being created by the U.S. Geological Survey as an...
Hydrogeology and simulated effects of ground-water withdrawals from the Floridan aquifer system in Lake County and in the Ocala National Forest and vicinity, north-central Florida
Leel Knowles Jr., Andrew M. O’Reilly, James C. Adamski
2002, Water-Resources Investigations Report 2002-4207
The hydrogeology of Lake County and the Ocala National Forest in north-central Florida was evaluated (1995-2000), and a ground-water flow model was developed and calibrated to simulate the effects of both present day and future ground-water withdrawals in these areas and the surrounding vicinity. A predictive model simulation was performed...
Geology and hydrogeology of the Caribbean Islands aquifer system of the Commonwealth of Puerto Rico and the U.S. Virgin Islands
Robert A. Renken, W. C. Ward, I. P. Gill, Fernando Gómez-Gómez, Jesús Rodríguez-Martínez
2002, Professional Paper 1419
Poorly lithified to unconsolidated carbonate and clastic sedimentary rocks of Tertiary (Oligocene to Pliocene) and Quaternary (Pleistocene to Holocene) age compose the South Coast aquifer and the North Coast limestone aquifer system of Puerto Rico; poorly lithified to unlithified carbonate rocks of late Tertiary (early Miocene to Pliocene) age make...
Habitat and environment of islands: primary and supplemental island sets
Nicholas C. Matalas, Bernardo F. Grossling
2002, Professional Paper 1590
The original intent of the study was to develop a first-order synopsis of island hydrology with an integrated geologic basis on a global scale. As the study progressed, the aim was broadened to provide a framework for subsequent assessments on large regional or global scales of island resources and impacts...
Simulation of ground-water flow and evaluation of water-management alternatives in the upper Charles River basin, eastern Massachusetts
Leslie A. DeSimone, Donald A. Walter, John R. Eggleston, Mark T. Nimiroski
2002, Water-Resources Investigations Report 2002-4234
Ground water is the primary source of drinking water for towns in the upper Charles River Basin, an area of 105 square miles in eastern Massachusetts that is undergoing rapid growth. The stratified-glacial aquifers in the basin are high yield, but also are thin, discontinuous, and in close hydraulic connection...
Concentrations of pesticides and pesticide degradates in the Croton River Watershed in southeastern New York, July-September 2000
Patrick J. Phillips, Robert W. Bode
2002, Water-Resources Investigations Report 2002-4063
Thirty-seven pesticides and (or) pesticide degradates were detected in baseflow samples collected from 47 stream sites in the Croton River Watershed (374 square miles) in southeastern New York in the summer of 2000. The Croton Reservoir provides about 10 percent of New York City's water supply. Maximum concentrations of most...
A National survey of methyl tert-butyl ether and other volatile organic compounds in drinking-water sources: Results of the random source-water survey
Stephen J. Grady
2002, Water-Resources Investigations Report 2002-4079
Methyl tert-butyl ether (MTBE) was detected in source water used by 8.7 percent of randomly selected community water systems (CWSs) in the United States at concentrations that ranged from 0.2 to 20 micrograms per liter (μg/L). The Random Survey conducted by the U.S. Geological Survey, in cooperation with the Metropolitan...
Assessing ground-water vulnerability to contamination: Providing scientifically defensible information for decision makers
Michael J. Focazio, Thomas E. Reilly, Michael G. Rupert, Dennis R. Helsel
2002, Circular 1224
Throughout the United States increasing demands for safe drinking water and requirements to maintain healthy ecosystems are leading policy makers to ask complex social and scientific questions about how to assess and manage our water resources. This challenge becomes particularly difficult as policy and management objectives require scientific assessments of...
Hydrologic, sediment, and biological data associated with irrigation drainage in the middle Green River basin, Utah and Colorado, water years 1991-2000
Ryan C. Rowland, David V. Allen, Doyle W. Stephens, James W. Yahnke, Nathan L. Darnall, Bruce Waddell
2002, Open-File Report 2002-343
Hydrologic, sediment, and biological data were collected in the middle Green River basin in eastern Utah from 1991 to 2000 in an effort to monitor the effects of irrigation drainage on wetland areas and streams, aid in the development of remediation plans, and evaluate the effectiveness of selenium remediation efforts...
The National Map - Elevation
Water Resources Division, U.S. Geological Survey
2002, Fact Sheet 106-02
Governments depend on a common set of base geographic information as a tool for economic and community development, land and natural resource management, and health and safety services. Emergency management and homeland security applications rely on this information. Private industry, nongovernmental organizations, and individual citizens use the same geographic data....
Mussel community composition in relation to macrohabitat, water quality, and impoundments in the Neversink River, New York
Barry P. Baldigo, George E. Schuler, Karen Riva-Murray
2002, Open-File Report 2002-104
Hydrology, vegetation, and soils of riverine and tidal floodplain forests of the lower Suwannee River, Florida, and potential impacts of flow reductions
Helen M. Light, Melanie R. Darst, Lori J. Lewis, David A. Howell
2002, Professional Paper 1656-A
A study relating hydrologic conditions, soils, and vegetation of floodplain forests to river flow was conducted in the lower Suwannee River, Florida, from 1996 to 2000. The study was done by the U.S. Geological Survey in cooperation with the Suwannee River Water Management District to help determine the minimum flows...
Age and tectonic significance of volcanic rocks in the northern Los Angeles Basin, California
Thane H. McCulloh, Robert J. Fleck, Rodger E. Denison, Larry A. Beyer, Richard G. Stanley
2002, Professional Paper 1669
Volcanic rocks, mostly basalts and some andesites, are interbedded with middle Miocene strata and are overlain by younger rocks throughout the greater part of the Los Angeles Basin, California. Roughly correlative flows, previously dated radiometrically (or paleontologically) at about 16.4 to 10.7 Ma, crop out in five separate regions around...
Southwest Washington coastal erosion workshop report 2000
Guy R. Gelfenbaum
Guy R. Gelfenbaum, editor(s)
2002, Open-File Report 2002-229
This report is a compilation of abstracts that correspond to oral presentations and posters presented at the fifth principal investigators workshop of the Southwest Washington Coastal Erosion Study. The workshop was held November 15 - 17, 2000 at the Department of Ecology headquarters building in Olympia, WA. For the fourth...
Clay minerals of the Front Range; a field guide to the geology, history, and clay mineralogy of the Chieftain Mine, Dinosaur Ridge, Patch Mine, and other localities along the Front Range from Denver to Boulder, Colorado
Daniel E. Kile
2002, Open-File Report 2002-413
Techniques for assessing sand and gravel resources in glaciofluvial deposits — An example using the surficial geologic map of the Loudon quadrangle, Merrimack and Belknap Counties, New Hampshire
David M. Sutphin, Lawrence J. Drew, Brian K. Fowler, Richard Goldsmith
2002, Professional Paper 1627
A method for estimating the sand and gravel resources in glaciofluvial systems has been developed based on surficial mapping techniques that use the morphosequence concept and geographic information systems (GIS). Two different strategies are used to estimate gravel resources. One strategy estimates the sand and gravel resources contained in esker...
The National Map - Orthoimagery
Water Resources Division, U.S. Geological Survey
2002, Fact Sheet 107-02
Governments depend on a common set of base geographic information as a tool for economic and community development, land and natural resource management, and health and safety services. Emergency management and homeland security applications rely on this information. Private industry, nongovernmental organizations, and individual citizens use the same geographic data....
Cooperative Topographic Mapping Program
Water Resources Division, U.S. Geological Survey
2002, Fact Sheet 105-02
The mission of the Cooperative Topographic Mapping (CTM) Program of the U.S. Geological Survey (USGS) is to provide the Nation with access to current, accurate, and consistent base geographic data and derivative products, including topographic maps. The CTM Program has the lead responsibility to develop, maintain, and make available The...
The National Map - Geographic Names
Water Resources Division, U.S. Geological Survey
2002, Fact Sheet 108-02
Governments depend on a common set of base geographic information as a tool for economic and community development, land and natural resource management, and health and safety services. Emergency management and homeland security applications rely on this information. Private industry, nongovernmental organizations, and individual citizens use the same geographic data....
Geology of St. John, U.S. Virgin Islands
Douglas W. Rankin
2002, Professional Paper 1631
The rocks of St. John, which is located near the eastern end of the Greater Antilles and near the northeastern corner of the Caribbean plate, consist of Cretaceous basalt, andesite, keratophyre, their volcaniclastic and hypabyssal intrusive equivalents, and minor calcareous rocks and chert. These rocks were intruded by Tertiary mafic...
Estimated quantity of water in fractured bedrock units on Mt. Desert Island, and estimated ground-water use, recharge, and dilution of nitrogen in septic waste in the Bar Harbor area, Maine
Martha G. Nielsen
2002, Open-File Report 2002-435
In 2002, the U.S. Geological Survey, in cooperation with the town of Bar Harbor, Maine, and the National Park Service, conducted a study to assess the quantity of water in the bedrock units underlying Mt. Desert Island, and to estimate water use, recharge, and dilution of nutrients from domestic septic...
Flow-frequency characteristics of Vermont streams
Scott A. Olson
2002, Water-Resources Investigations Report 2002-4238
The safe and economical design of infrastructure in and near waterways and the effective management of flood-hazard areas require information on streamflow that may not be readily available. This report provides estimates of flow-frequency characteristics for gaged streams in Vermont and describes methods for estimating flow-frequency characteristics for ungaged streams....
Flood deposits of transported mill tailings in Nevada and Utah; evidence for tailings failures and implications for risk assessment
J. Thomas Nash
2002, Open-File Report 2002-431
No abstract available....
