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Site content related to keyword: "Delaware"

DGS Staff Directory

DGS staff directory lists all full-time science and administrative personnel. It includes interactive areas of interest and a comprehensive listing of each staff members' projects, publications, and activities.

Kenneth D. Woodruff, Associate Director (1966 - 1992)

Kenneth D. Woodruff, Associate Director (1966 - 1992)
Date: May 1966 - Jan 1992

Kenneth D. Woodruff, Associate Director (1966 - 1992)

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About the Delaware Geological Survey

The DGS Building, University of Delaware, Newark Campus

The Delaware Geological Survey (DGS) is a science-based, public-service-driven Delaware state agency at the University of Delaware (UD) that conducts geologic and hydrologic research, service, and exploration for the benefit of the citizens of the First State. The mission of the DGS is to provide objective earth science information, advice, and service to its stakeholders, the citizens, policy makers, industries, and educational institutions of Delaware.

The Second Delaware Geological Survey

The Second Delaware Geological Survey
Date: Jun 1951

The Survey started its investigations in July 1951 with Johan J. Groot as State Geologist and Lecturer, later Professor of Geology, and Louis P. Vlangas as Geological Field Assistant. The University provided office space, which was shared with the Department of Geography. The cooperative program with the USGS, begun prior to 1951, was continued. Studies of the geology of New Castle County and of the ground-water resources of the Newark area were initiated, the latter with financial support of that city.

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First State Geology Vol.1, No.1 is published

First State Geology Vol.1, No.1 - Summer 1983
Date: May 1983

First State Geology offers news on Delaware geology and water resources, on recent DGS publications, and on DGS staff activities as a twice-per-year newsletter publication.

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RI20 Nitrate Contamination of the Water-Table Aquifer in Delaware

RI20 Nitrate Contamination of the Water-Table Aquifer in Delaware

The increasing population of the State of Delaware is placing severe strains on the quality of ground water in the water-table aquifer by disposing of septic-tank effluent in the soil. At the same time the water resources of this aquifer are being used in greater amounts. The permeable water-table aquifer, containing reserves of 331 million gallons per day, is very vulnerable to contamination by objectionable or toxic fluids and dissolved substances placed on or in the soil.

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RI15 General Ground-Water Quality in Fresh-Water Aquifers of Delaware

RI15 General Ground-Water Quality in Fresh-Water Aquifers of Delaware

Information on ground-water quality in Delaware has become critical for three reasons: (1) increased water demand, (2) need for a better understanding of ground-water flow patterns, (3) need for a "base" against which future quality changes can be measured. Analyses of about 150 water quality samples from wells show that Delaware's fresh ground waters are suitable for most purposes. High iron content may occur, however, in wells tapping the Columbia and the Potomac formations. Overall, total dissolved solids in Delaware aquifers are relatively low except in the Cheswold and Frederica aquifers (Miocene), and possibly parts of the Piney Point Formation (Eocene).

RI14 Delaware Clay Resources

RI14 Delaware Clay Resources

Forty-eight samples of Delaware clays were collected and tested jointly by the Delaware Geological Survey and the U. S. Bureau of Mines. Clays potentially useful for face brick are common. The nonmarine Cretaceous Potomac Formation is a potential economic clay at virtually all locations sampled. Some Miocene and Pleistocene clays are also possibilities for brick clays. Other Potomac clays are potential sources for glazed tile, sewer pipe, refractory brick, and stoneware. Coastal marsh clays, frequently containing much organic debris, are potential source material for lightweight aggregate used in lightweight, strong concrete products. Lightweight aggregate has the potential for augmenting dwindling reserves of crushed stone and gravel aggregate.

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Delaware 7.5-minute USGS Quadrangle Index

Delaware 7.5-minute USGS Quadrangle Index

A geospatial data file containing all polygons representing the areal extent of 7.5-minute topographic quadrangles within and surrounding Delaware.

Survey gives DataMIL web site new look, features

The Delaware DataMIL New Look

The Delaware Geological Survey's Delaware Data Mapping and Integration Laboratory (DataMIL) team has modified and improved the DataMIL Web site to ensure that the state geographic information systems (GIS) community and citizens can take full advantage of spatial data framework layers.

RI9 Ground-Water Levels in Delaware January, 1962 - June, 1966

RI9 Ground-Water Levels in Delaware January, 1962 - June, 1966

This report deals with fluctuations in nine observation wells during the period 1960 - 1966. These wells are part of a state-wide ground-water monitoring network and are located in areas of little or no pumping. Eight of the wells respond to water-table conditions; the ninth well appears to reflect artesian conditions.
Although precipitation throughout Delaware was generally below average during the period covered by this report, annual average water levels declined very little in the wells reported on here. There is some evidence, however, for a lowering of water-table levels by three to four feet during the period 1960 - 1962.

RI8 Evaluation of the Water Resources of Delaware

RI8 Evaluation of the Water Resources of Delaware

At present, Delaware has an abundance of water for the foreseeable future, but is already faced with water problems in some municipalities. These can only be resolved satisfactorily through complete evaluation of the State's water resources and the establishment of a coordinated program of water management.

DGS Publications

The core of much DGS work culminates in the release of data and findings in official DGS publications, including Open File Reports, Reports of Investigations, Geologic Maps, Hydrologic Maps, and Bulletins.

DGS issues report on well water quality survey

OFR48 Results Of The Domestic Well Water-Quality Study

The Delaware Geological Survey (DGS) at the University of Delaware has released a new technical report that documents technical aspects of an intensive survey, review and analysis of existing ground-water quality data obtained from samples collected from more than 200 shallow domestic and small public wells to determine the extent to which toxic and carcinogenic compounds are present in shallow ground water.