Showing 1 - 9 results of 9 for search '"Water quality United States."', query time: 0.25s Refine Results
  1. 1
    A study of trends in dissolved oxygen and fecal coliform bacteria at NASQAN stations /
    by Smith, Richard A.
    Published 1982
    Subjects: “...Water quality United States....”
    Government Document Book
  2. 2
    Analysis and interpretation of water-quality trends in major U.S. rivers, 1974-81 /
    by Smith, Richard A.
    Published 1987
    Subjects: “...Water quality United States....”
    Government Document Book
  3. 3
    Regional assessments of the nation's water quality : improved understanding of stream nutrient sources through enhanced modeling capabilities /
    by Preston, Stephen D., 1955-
    Published 2011
    Subjects: “...Water quality United States....”
    Get full text
    Government Document eBook
  4. 4
    Stream water quality in the conterminous United States--status and trends of selected indicators during the 1980's.
    by Smith, Richard A., 1945-
    Published 1994
    Subjects: “...Water quality United States....”
    Get full text
    Government Document eBook
  5. 5
    Evidence for acid-precipitation-induced trends in stream chemistry at hydrologic bench-mark stations /
    by Smith, Richard A.
    Published 1983
    Subjects: “...Water quality United States....”
    Government Document Book
  6. 6
    Regional estimates of the amount of U.S. agricultural land located in watersheds with poor water quality.
    by Smith, Richard A.
    Published 1994
    Subjects: “...Water quality United States....”
    Government Document Microform Book
  7. 7
    Data from selected U.S. Geological Survey national stream water-quality monitoring networks (WQN) : CD-ROMs /
    Published 1996
    Subjects: “...Water quality United States Databases....”
    Get full text
    Government Document Software eBook
  8. 8
    Data from selected U.S. Geological Survey national stream water-quality monitoring networks (WQN) on CD-ROM.
    Published 1997
    Subjects: “...Water quality United States Databases....”
    Get full text
    Government Document Book
  9. 9
    Evidence for acid-precipitation-induced trends in stream chemistry at hydrologic bench-mark stations /
    Subjects: “...Water quality United States....”
    Get full text
    Government Document eBook
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