Showing 1 - 20 results of 63 for search '"United States."', query time: 0.30s Refine Results
  1. 1
    County-level estimates of nutrient inputs to the land surface of the conterminous United States, 1982-2001 /
    by Ruddy, Barbara C.
    Published 2006
    Subjects: “...Plant nutrients United States....”
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    Government Document eBook
  2. 2
    Hydrogeologic settings and ground-water flow simulations for regional studies of the transport of anthropogenic and natural contaminants to public-supply wells--studies begun in 2001 /
    Published 2007
    Subjects: “...Water Pollution potential United States....”
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    Government Document eBook
  3. 3
    Factors affecting water quality in selected carbonate aquifers in the United States,1993-2005 /
    Published 2009
    Subjects: “...Water quality United States....”
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    Government Document eBook
  4. 4
    Pesticides in the nation's streams and ground water, 1992-2001 : the quality of our nation's waters /
    Published 2006
    Subjects: “...Water Pollution United States....”
    Report:
    Summary:
    Government Document eBook
  5. 5
    Feasibility of combining two aquatic benthic macroinvertebrate community databases for water-quality assessment.
    by Lenz, Bernard N.
    Published 1997
    Subjects: “...Benthos United States....”
    Government Document Book
  6. 6
    Estimated withdrawals from stream-valley aquifers and refined estimated withdrawals from selected aquifers in the United States, 2000 /
    by Sargent, Blaine P.
    Published 2008
    Subjects: “...Water withdrawals United States....”
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    Government Document eBook
  7. 7
    Classification and mapping of agricultural land for national water-quality assessment.
    by Gilliom, Robert J.
    Published 1997
    Subjects: “...Agricultural mapping United States....”
    Government Document Book
  8. 8
    Nitrate in the ground waters of the United States : assessing the risk /
    by Nolan, Bernard T., 1954-
    Published 1997
    Subjects: “...Water Nitrogen content United States....”
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    Government Document eBook
  9. 9
    Ground-water data-collection protocols and procedures for the National Water-Quality Assessment Program : collection, documentation, and compilation of required site, well, subsurface, and landscape data for wells /
    by Koterba, Michael T.
    Published 1998
    Subjects: “...Water quality Standards United States....”
    Government Document Book
  10. 10
    Water-quality, streamflow, and ancillary data for nutrients in streams and rivers across the nation, 1992-2001 /
    by Mueller, David K.
    Published 2005
    Subjects: “...Water quality United States....”
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    Government Document eBook
  11. 11
    Concentration data for anthropogenic organic compounds in ground water, surface water, and finished water of selected community water systems in the United States, 2002-05 /
    Published 2007
    Subjects: “...Water Pollution United States....”
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    Government Document eBook
  12. 12
    Collection, analysis, and age-dating of sediment cores from 56 U.S. lakes and reservoirs sampled by the U.S. Geological Survey, 1992-2001 /
    Published 2004
    Subjects: “...Lake sediments United States....”
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    Government Document Book
  13. 13
    Response of stream chemistry during base flow to gradients of urbanization in selected locations across the conterminous United States, 2002-04 /
    Published 2007
    Subjects: “...Urbanization Environmental aspects United States....”
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    Government Document eBook
  14. 14
    Man-made organic compounds in source water of nine community water systems that withdraw from streams, 2002-05 /
    by Kingsbury, James A.
    Published 2008
    Subjects: “...Water Pollution United States....”
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    Government Document eBook
  15. 15
    Quality of water from domestic wells in principal aquifers of the United States, 1991-2004 /
    by Desimone, Leslie A.
    Published 2009
    Subjects: “...Drinking water Contamination United States....”
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    Government Document eBook
  16. 16
    Quality of water from domestic wells in principal aquifers of the United States, 1991-2004 : overview of major findings /
    by Desimone, Leslie A.
    Published 2009
    Subjects: “...Drinking water Contamination United States....”
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    Government Document eBook
  17. 17
    Multilevel hierarchical modeling of benthic macroinvertebrate responses to urbanization in nine metropolitan regions across the conterminous United States /
    Published 2010
    Subjects: “...Urbanization Environmental aspects United States....”
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    Government Document eBook
  18. 18
    Occurrence of uranium and ²²²radon in glacial and bedrock aquifers in the northern United States, 1993-2003 /
    by Ayotte, Joseph D.
    Published 2007
    Subjects: “...Uranium Environmental aspects United States....”
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    Government Document eBook
  19. 19
    Distribution of major herbicides in ground water of the United States /
    Published 1999
    Subjects: “...Pesticides Environmental aspects United States....”
    Government Document Book
  20. 20
    Occurrence of volatile organic compounds in selected urban streams in the United States, 1995-2003 /
    by Bender, David A.
    Published 2009
    Subjects: “...Water Organic compound content United States....”
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    Government Document eBook
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