Showing 1 - 20 results of 124 for search '"Water quality United States."', query time: 0.25s Refine Results
  1. 1
    Quality-assurance results for routine water analyses in U.S. Geological Survey laboratories, water year 1997 /
    by Ludtke, Amy S.
    Published 1999
    Subjects: “...Water quality United States Measurement....”
    Government Document Book
  2. 2
    Concepts for a national water-quality assessment program /
    by Hirsch, Robert M.
    Published 1988
    Subjects: “...Water quality United States....”
    Government Document Book
  3. 3
    Summary of available state ambient stream-water-quality data, 1990-98, and limitations for national assessment /
    Published 2004
    Subjects: “...Water quality United States Measurement....”
    PURL
    Adobe Acrobat Reader required.
    Government Document eBook
  4. 4
    Summary of available state ambient stream-water-quality data, 1990-98, and limitations for national assessment /
    Published 2004
    Subjects: “...Water quality United States Measurement....”
    Get full text
    Government Document eBook
  5. 5
    National Water-Quality Assessment program.
    Published 1991
    Subjects: “...Water quality United States....”
    Government Document Book
  6. 6
    Methodology to derive water-quality trends for use by the National water summary program of the U.S. Geological Survey /
    by Lanfear, Kenneth J.
    Published 1990
    Subjects: “...Water quality United States....”
    Government Document Microform Book
  7. 7
    Review of trace element blank and replicate data collected in ground and surface water for the national water-quality assessment program, 1991-2002 /
    by Apodaca, Lori Estelle
    Published 2006
    Subjects: “...Water quality United States....”
    HTML version:
    PDF version:
    Government Document Book
  8. 8
    National Water-Quality Assessment Program /
    by Leahy, P. Patrick
    Published 1994
    Subjects: “...Water quality United States....”
    Book
  9. 9
    Results of the U.S. Geological Survey's second international interlaboratory analytical comparison study--standard reference water samples M-86 (major constituents), T-87 (trace constituents), and P-5 (precipitation snowmelt) /
    by Janzer, Victor J.
    Published 1985
    Subjects: “...Water quality United States Measurement....”
    Government Document Book
  10. 10
    Methods for comparing water-quality conditions among National Water-Quality Assessment Study units, 1992-1995 /
    by Gilliom, Robert J.
    Published 1998
    Subjects: “...Water quality United States Measurement....”
    Government Document Microform Book
  11. 11
    Report on the U.S. Geological Survey's evaluation program for standard reference samples distributed in April 1992 : T-119 (trace constituents), M-122 (major constituents), N-34 (nutrients), N-35 (nutrients), Hg-14 (mercury) /
    by Long, H. Keith
    Published 1992
    Subjects: “...Water quality United States Measurement....”
    Government Document Microform Book
  12. 12
    Concentrations and annual fluxes for selected water-quality constituents from the USGS National Stream Quality Accounting Network (NASQAN), 1996-2000 /
    Published 2001
    Subjects: “...Water quality United States Measurement....”
    Get full text
    Government Document eBook
  13. 13
    Microcomputer computation of water quality discharges /
    by Helsel, Dennis R.
    Published 1983
    Subjects: “...Water quality United States Data processing....”
    Government Document Book
  14. 14
    Evaluation of selected one-dimensional stream water-quality models with field data /
    by McCutcheon, Steve C.
    Published 1982
    Subjects: “...Water quality United States Mathematical models....”
    Government Document Book
  15. 15
    Nonparametric tests for trends in water-quality data using the statistical analysis system /
    Subjects: “...Water quality United States Statistical methods....”
    Government Document Book
  16. 16
    Software quality assurance in the National Water Information System /
    by Dempster, G. R.
    Published 1991
    Subjects: “...Water quality United States Computer programs....”
    Government Document Book
  17. 17
    Hydrologic data-collection stations whose stream water quality data were available to prepare the 1990-91 National Water Summary on Stream Water Quality /
    by Lanfear, Kenneth J.
    Published 1993
    Subjects: “...Water quality United States Data processing....”
    Government Document Microform Book
  18. 18
    Summary of the U.S. Geological Survey National Field Quality Assurance Program from 1979 through 1997 /
    by Stanley, Daniel L.
    Published 1998
    Subjects: “...Water quality United States Measurement Quality control....”
    Government Document Microform Book
  19. 19
    A study of trends in total phosphorus measurements at NASQAN stations /
    by Smith, Richard A.
    Published 1982
    Subjects: “...Water quality United States....”
    Government Document Book
  20. 20
    Potential hazards to water resources along a test-flight path, 1952 /
    by Theis, C. V.
    Published 1991
    Subjects: “...Water quality United States....”
    Government Document Microform Book
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