Relation between urbanization and water quality of streams in the Austin area, Texas

Veenhuis, Jack E.; Slade, Raymond M.

doi:10.3133/wri904107

1990

DOI: 10.3133/wri904107

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Relation between urbanization and water quality of streams in the Austin area, Texas

Jack E. Veenhuis¹,

Raymond M. Slade²

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1994

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Cited by 2 publications

References 24 publications

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Summary of water-resources activities of the U.S. Geological Survey in Oregon: Fiscal year 1989

Curtiss¹

1989

Open-File Report

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, in order to answer the need for a permanent government agency at the Federal level to conduct, on a continuing, systematic, and scientific basis, investigations of the "geological structure, mineral resources, and products of the national domain." Although a number of laws and executive orders have expanded and modified the scope of the Survey's responsibilities during its 110-year history, the Survey has remained principally a scientific and technical investigation agency, as contrasted with a developmental or regulatory one. Today the Survey is mandated to assess onshore and offshore energy and mineral resources; to provide information for society to mitigate the impact of floods, earthquakes, landslides, volcanoes, and droughts; to monitor the Nation's ground-and surface-water supplies; to study the impact of man on the Nation's water resources; and to provide mapped information on the Nation's landscape and land use. The Survey is the principal source of scientific and technical expertise in the earth sciences within the Department of the Interior and the Federal Government. The Survey's activities span a wide range of earth-science research and services in the fields of geology, hydrology, and cartography, and represent the continuing pursuit of the long-standing scientific missions of the Survey. l

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Summary of water-resources activities of the U.S. Geological Survey in Oregon: Fiscal year 1989

Curtiss¹

1989

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Determination of chlorinated insecticides in bottom sediment using an electron-capture gas chromatography screening method, Austin, Texas, 1991 and 1992

Brock¹,

Murtagh²

1994

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Twenty-two bottom-sediment samples were collected from Town Lake in Austin, Texas, in 1991 and 1992 and analyzed for chlorinated insecticides by a reconnaissance-quality, electron-capture gas chromatography screening method developed by the U.S. Geological Survey (USGS). Four different chlorinated insecticides (aldrin, chlordane, dieldrin, and p,p'-DDT) and two degradation products of p,p'-DDT (p,p'-DDD and p,p'-DDE) were detected in these samples. The most significant insecticides detected were chlordane, which was detected in 20 of the 22 samples at concentrations that ranged from 26 to 140 micrograms per kilogram, and p,p'-DDT, which was detected in all 22 samples at concentrations that ranged from 5 to 40 micrograms per kilogram. Degradation products of p,p'-DDT were detected in all 22 samples. Concentrations of p,p'-DDD ranged from not detected to 117 micrograms per kilogram and for p,p'-DDE from 9 to 97 micrograms per kilogram. Of the 22 samples collected, 15 also were analyzed by the standard USGS laboratory analytical method for chlorinated insecticides to determine the comparability of the two methods. Correlation coefficients were calculated for chlordane (0.8662), p,p'-DDT (0.6393), p,p'-DDD (0.9401), p,p'-DDE (0.8595), and dieldrin (0.3819). A paired sign test at the 95 percent confidence level showed no significant difference between the screening method and the laboratory analytical method for all detected insecticides except aldrin. P-values were calculated from the data for chlordane (1.0000), p,p'-DDT (0.1796), p,p'-DDD (1.0000), p,p'-DDE (0.1796), and dieldrin (0.2891).

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Relation between urbanization and water quality of streams in the Austin area, Texas

Cited by 2 publications

References 24 publications

Summary of water-resources activities of the U.S. Geological Survey in Oregon: Fiscal year 1989

Summary of water-resources activities of the U.S. Geological Survey in Oregon: Fiscal year 1989

Determination of chlorinated insecticides in bottom sediment using an electron-capture gas chromatography screening method, Austin, Texas, 1991 and 1992

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