Search results for: Gerhart, James M.

Showing 1 - 12 results of 12 Refine Results
  1. 1

    National Water-Quality Assessment program : the Potomac River basin.

    Authors: Gerhart, James M.
    Published: U.S. Geological Survey, Department of the Interior ; [Books and Open-File Reports Section, distributor], 1991
    Physical Description: 1 sheet.
    Government Document Microfilm Book
  2. 2

    Evaluation of the ground-water resources of the lower Susquehanna River basin, Pennsylvania and Maryland

    Authors: Gerhart, James M.
    Published: U.S. Department of the Interior, Geological Survey ; For sale by the Books and Open-File Reports Section, 1988
    Physical Description: vi, 128 pages : illustrations, maps ; 28 cm.
    Government Document Book
  3. 3

    Evaluation of the ground-water resources of the lower Susquehanna River basin, Pennsylvania and Maryland

    Authors: Gerhart, James M.
    Published: U.S. Department of the Interior, Geological Survey ; Open-File Services Section, Western Distribution Branch, U.S. Geological Survey, 1984
    Physical Description: 1 volume : illustrations, maps ; 28 cm.
    Government Document Microfilm Book
  4. 4

    Evaluation of the ground-water resources of parts of Lancaster and Berks counties, Pennsylvania

    Authors: Gerhart, James M.
    Published: U.S. Department of the Interior, Geological Survey ; Open-File Service Section, Western Distribution Branch, 1984
    Physical Description: vii, 136 pages : illustrations, maps ; 28 cm.
    Government Document Book
  5. 5

    Selected trace-element and organic contaminants in the streambed sediments of the Potomac River basin, August 1992

    Authors: Gerhart, James M.
    Published: U.S. Geological Survey, 1995
    Physical Description: 12 pages : color illustrations, color maps ; 28 cm.
    Government Document Book
  6. 6

    Design and implementation of a sampling strategy for a water-quality assessment of the Potomac River basin

    Authors: Gerhart, James M.
    Published: U.S. Department of the Interior, U.S. Geological Survey ; Branch of Information Services [distributor], 1996
    Physical Description: 31 pages : color illustrations, color maps ; 28 cm.
    Government Document Book
  7. 7

    The status of streamflow and ground-water-level monitoring networks in Maryland, 2005

    Authors: Gerhart, James M.
    Published: U.S. Dept. of the Interior, U.S. Geological Survey, 2005
    Physical Description: 6 unnumbered pages : digital, PDF file.
    Connect to online resource - All users (Federal Depository Library Program Persistant URL)
    Government Document Electronic eBook
  8. 8

    Evaluation of the ground-water resources of parts of Lancaster and Berks counties, Pennsylvania

    Authors: Gerhart, James M., Lazorchick, George J.
    Published: U.S. Geological Survey, 1984
    Physical Description: 1 online resource (vii, 136 pages) : illustrations, maps + 5 plates.
    Connect to online resource - All users (Federal Depository Library Program Persistant URL)
    Government Document Electronic eBook
  9. 9

    Simulated effects of ground-water development on potentiometric surface of the Floridan aquifer, west-central Florida

    Authors: Wilson, William E. (William Edward), 1934-, Gerhart, James M.
    Published: United States Department of the Interior, Geological Survey, 1982
    Physical Description: 1 online resource (v, 83 pages) : illustrations, maps + 2 plates.
    Connect to online resource - All users (Federal Depository Library Program Persistant URL)
    Government Document Electronic eBook
  10. 10

    Hydrologic monitoring program in Eldridge-Wilde and East Lake Road well-field areas, Pinellas and Hillsborough Counties, Florida, 1977 water year

    Authors: Joyner, Boyd F.
    Published: U.S. Department of the Interior, Geological Survey, 1980
    Other Authors: “…Gerhart, James M.…”
    Physical Description: iv, 34 pages : illustrations, maps ; 28 cm.
    Government Document Microfilm Book
  11. 11

    Simulated effects of ground-water development on potentiometric surface of the Floridan aquifer, west-central Florida

    Authors: Wilson, William E. (William Edward), 1934-
    Published: U.S. Department of the Interior, Geological Survey, 1982
    Other Authors: “…Gerhart, James M.…”
    Physical Description: v, 83 pages : illustrations, maps ; 29 cm.
    Government Document Book
  12. 12

    Hydrogeology of well-field areas near Tampa, Florida, phase 1 : development and documentation of a two-dimensional finite-difference model for simulation of steady state ground-wat...

    Authors: Hutchinson, C. B.
    Published: U.S. Department of the Interior, Geological Survey, 1981
    Other Authors:
    Physical Description: 1 volume : illustrations, 9 maps ; 28 cm.
    Government Document Microfilm Book