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  U.S. Geological Survey Open-File Report 02-002

MJWATER: ESRI major water shapefile for the Long Island Sound ArcView project area.

Metadata also available as: HTML - TEXT

Frequently-anticipated questions:

What does this data set describe?
    Title:
    MJWATER: ESRI major water shapefile for the Long Island Sound ArcView project area.
    Abstract:
    This vector data layer is a background of the major water bodies that fall within the US basemap data layer and are distributed with the Long Island Sound ArcView project file.

  1. How should this data set be cited?

    Paskevich(ed.), Valerie, and Environmental Systems Research , Inc. (ESRI)(comp.), Unknown, MJWATER: ESRI major water shapefile for the Long Island Sound ArcView project area.: U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole, MA.

    Online Links:

    This is part of the following larger work.

    Poppe, Larry, and Paskevich, Valerie, 2002, Geological Framework Data from Long Island Sound, 1981-1990: A Digital Data Release: U.S. Geological Survey Open-File Report 02-002, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole, MA.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -80.519818
    East_Bounding_Coordinate: -67.122253
    North_Bounding_Coordinate: 47.233270
    South_Bounding_Coordinate: 38.952099

  3. What does it look like?

    ../../../../htmldocs/images/browse/mjwater.gif (GIF)
    Image showing the extent of the GIS layer mjwater of the U.S. that fall within the US basemap data layer for the Long Island Sound project area.

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: 30-Jun-2002
    Currentness_Reference: publication date

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: vector digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • G-polygon (4170)

    2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.00001. Longitudes are given to the nearest 0.00001. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.400000.
      The flattening of the ellipsoid used is 1/294.978698.

  7. How does the data set describe geographic features?

    mjwater
    Shapefile attribute file (Source: ESRI)

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Shape
    Feature geometry. (Source: ESRI)

    ValueDefinition
    PolygonESRI polygon shapefile

    Coordinates defining the features.

    NAME
    Name of water feature

    Character field

    AREA
    Area of polygon in native units (Source: Software Computed)

    Range of values
    Minimum:0.000
    Maximum:0.121
    Units:Decimal degrees
    Resolution:.001

    PERIMETER
    Length of polygon perimeter (Source: Software Computed)

    Range of values
    Minimum:0.000
    Maximum:16.758
    Units:Decimal degrees
    Resolution:.001

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

  3. To whom should users address questions about the data?

    U.S. Geological Survey
    c/o Valerie Paskevich
    Computer Specialist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov

Why was the data set created?
The purpose of this data layer is to provide a general reference as to major river systems that fall within the US basemap data layer as distributed with the Long Island Sound ArcView project file.

How was the data set created?
  1. From what previous works were the data drawn?

    mjwater.shp (source 1 of 1)
    Environmental Systems Research , Inc.(comp.), Unknown, ESRI mjwater shapefile: ESRI Data and Maps; Disk 1 1999, Environmental Systems Research Institute, Inc. (ESRI), Redlands, CA.

    Online Links:

    This is part of the following larger work.

    Environmental Systems Research , Inc., Unknown, ESRI Data and Maps CD.

    Online Links:

    Other_Citation_Details:
    The data is organized on five CD-ROMS. CD#1 contains data for the world, Mexico, Canada, Europe and the United States. Detailed data for the entire United States is continued on CD #2. The very detailed data for the regions of the United States is split between the west (CD #3), the east (CD # 4), and the south (CD #5). Also, there is a ssample image data on CD #5.
    Type_of_Source_Media: CD-ROM
    Source_Contribution:
    The ArcView shapefile, mjwater.shp, provided by ESRI with their software distribution was used to create the mjwater data layer for use with the Long Island Sound study project views.

  2. How were the data generated, processed, and modified?

    Date: 18-Apr-2002 (process 1 of 3)
    The dataset was reprojected to the Clarke 1866 spheroid to be compatible with the other data layers.

    Person who carried out this activity:

    Valerie Paskevich
    U.S. Geological Survey
    Computer Specialist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov

    Data sources used in this process:
    • mjwater.dbf
    • mjwater.shp
    • mjwater.shx

    Data sources produced in this process:

    • mjwater2.dbf
    • mjwater2.shp
    • mjwater2.shx

    Date: 18-Apr-2002 (process 2 of 3)
    The complete ESRI mjwater shapefile was clipped to include only those records that fall within the US basemap data layer distributed with the Long Island Sound ArcView project file. During the clipping stage, the attribute fields Area, Perimeter and Acreage were computed.

    Person who carried out this activity:

    Valerie Paskevich
    U.S. Geological Survey
    Computer Specialist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov

    Data sources used in this process:
    • mjwater2.dbf
    • mjwater2.shp
    • mjwater2.shx

    Data sources produced in this process:

    • mjwater.dbf
    • mjwater.shp
    • mjwater2.shx

    Date: 19-Apr-2002 (process 3 of 3)
    The attribute field Acreage was deleted.

    Person who carried out this activity:

    Valerie Paskevich
    U.S. Geological Survey
    Computer Specialist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov

    Data sources used in this process:
    • mjwater.dbf

    Data sources produced in this process:

    • mjwater.dbf

How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?

  2. How accurate are the geographic locations?

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    none

  5. How consistent are the relationships among the observations, including topology?

    No additional checks for topological consistency were performed on this data set.

How can someone get a copy of the data set?
Are there legal restrictions on access or use of the data?

Access_Constraints: None
Use_Constraints:
Although this derived data set and its lineage dataset have been used by the USGS, no warranty, expressed or implied, is made by the USGS or ESRI as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS or ESRI in the use of these data or related materials.

Please read the Environmental Systems Research Institute, Inc. (ESRI) licensing agreement at <http://www.esri.com/licenseagreement/>

  1. Who distributes the data set? (Distributor 1 of 1)

    Valerie Paskevich
    U.S. Geological Survey
    Computer Specialists
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov

  2. What's the catalog number I need to order this data set?

    Long Island Sound: mjwater.shp

  3. What legal disclaimers am I supposed to read?

    Although this derived data set and its lineage dataset have been used by the USGS, no warranty, expressed or implied, is made by the USGS or ESRI as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS or ESRI in the use of these data or related materials.

  4. How can I download or order the data?

  5. What hardware or software do I need in order to use the data set?

    This GIS layer is available in an ArcView shapefile format. Users must have ArcView 3.0 or later, or another GIS application capable of importing the data.

Who wrote the metadata?
Dates:
Last modified: 19-Apr-2002

Metadata author:
Valerie Paskevich
U.S. Geological Survey
computer specialist
384 Woods Hole Road
Woods Hole, MA 02543-1598
USA

(508) 548-8700 x2281 (voice)
(508) 457-2310 (FAX)
vpaskevich@usgs.gov

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Generated by mp version 2.7.3 on Fri Apr 19 10:19:54 2002