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Page 4325, results 108101 - 108125

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Potential well yields from unconsolidated deposits in the lower Hudson and Delaware River basins, New York
Stephen W. Wolcott
1987, Water-Resources Investigations Report 87-4042
A comprehensive groundwater protection plan, developed by the New York State Department of Environmental Conservation in 1985, identified the need to delineate significant aquifers within the state. A map of the unconsolidated aquifers in the lower Hudson and Delaware River basins was compiled from available data on the surficial geology...
Water resources data, Texas, water year 1986, Volume 1: Arkansas River basin, Red River basin, Sabine River basin, Neches River basin, Trinity River basin, and intervening and adjacent coastal basins
H.D. Buckner, E.R. Carillo, H.J. Davidson
1987, Water Data Report TX-86-1
The Water Resources Division of the U.S. Geological Survey, in cooperation with Federal, State, and City agencies, obtains a large amount of data pertaining to the water resources of Texas each water year. Such data, accumulated during many water years, constitute a valuable data base for developing an improved understanding...
Patterns of acid deposition variability in the Eastern United States, 1981-84
H.F. Lins, K.J. Lanfear, T. L. Schertz
1987, Open-File Report 87-454
An increase in pH and a decrease in sulfate concentration of precipitation were recorded at National Atmospheric Deposition Program and National Trends Network (NADP/NTN) monitoring sites in the Eastern United States between 1981 and 1984. The decline in acidity, however, was not spatially or temporally uniform. The range in acidity...
Geohydrology of the Antelope Valley Area, California and design for a ground-water-quality monitoring network
L.F. Duell
1987, Water-Resources Investigations Report 84-4081
A basinwide ideal network and an actual network were designed to identify ambient groundwater quality, trends in groundwater quality, and degree of threat from potential pollution sources in Antelope Valley, California. In general, throughout the valley groundwater quality has remained unchanged, and no specific trends are apparent. The main source...
Geologic map of the east part of the San Francisco Volcanic Field, north-central Arizona
Richard B. Moore, Edward W. Wolfe
1987, Miscellaneous Field Studies Map 1960
The geologic map of the east part of the San Francisco volcanic field (called the East map area) is one of five adjoining geologic maps (fig. 1) prepared under the Geothermal Research Program of the U.S. Geological Survey as a basis for interpreting the history of magmatic activity in the...
Ground-water pumpage from the Columbia Plateau Regional Aquifer System, Oregon, 1984
C. A. Collins
1987, Water-Resources Investigations Report 86-4211
Groundwater pumpage was estimated for 1984 for an area of about 8,000 sq mi in north-central Oregon. Pumpage data were collected from irrigation, industrial and public supply users and analyzed as part of the Columbia Plateau Regional Aquifer System Analysis (RASA) study. Groundwater is pumped from Tertiary basalts and interflow...
Effects of surface runoff and treated wastewater recharge on quality of water in the Floridan aquifer system, Gainesville Area, Alachua County, Florida
G. G. Phelps
1987, Water-Resources Investigations Report 87-4099
Rates of recharge to the Floridan aquifer system at four sites in Alachua County were estimated and water samples were analyzed to determine if the recharge water had any effects on the water quality of the aquifer. A total of about 33 million gal/day (mgd) recharges the upper part of...
Selected chemical analyses of water from formations of Mesozoic and Paleozoic age in parts of Oklahoma, northern Texas, and Union County, New Mexico
R.S. Parkhurst, S. C. Christenson
1987, Water-Resources Investigations Report 86-4355
Hydrochemical data were compiled into a data base as part of the Central Midwest Regional Aquifer System Analysis project. The data consist of chemical analyses of water samples collected from wells that are completed in formations of Mesozoic and Paleozoic age. The data base includes data from the National Water...
Determination of benthic-invertebrate indices and water-quality trends of selected streams in Chester County, Pennsylvania, 1969-80
C.R. Moore
1987, Water-Resources Investigations Report 85-4177
The trends of biological and chemical data collected for 12 years (1969-80) from 46 sites in Chester County were evaluated by using the sea- sonal Kendall test. Brillouin's diversity index was calculated and plotted against time for each site. The diversity index at 7 sites had upward trends significant at...