MNHACOE: Army Corps Sediment Data from Maine and New Hampshire

Metadata also available as: OUTLINE - TEXT

Frequently-anticipated questions:

What does this data set describe?
    Title: MNHACOE: Army Corps Sediment Data from Maine and New Hampshire
    Abstract:
    The data in this layer are from a study that evaluated and documented the historic and projected future dredging and dredged material disposal needs of the coastal rivers and harbors of the states of Maine and New Hampshire. Documentation of historic dredging and disposal activities was accomplished through the collection of data primarily from the files of the ACOE, New England Division, in Waltham, Massachusetts, supplemented by information from the states of Maine and New Hampshire and previously published reports. This historic dredging occurred between 1950-1993 and involved 499 dredging events.

  1. How should this data set be cited?

    Barnhardt, Walter, Hastings, Polly, and Poppe, Lawrence J. , 2003, MNHACOE: Army Corps Sediment Data from Maine and New Hampshire: U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Field Center, Woods Hole, MA.

    Online Links:

    This is part of the following larger work.

    Poppe, L.J., Paskevich, V.F., Williams, S.J., Hastings, M.E., Kelley, J.T., Belknap, D.F., Ward, L.G., FitzGerald, D.M., and Larsen, P.F., 2003, Surficial Sediment Data from the Gulf of Maine, Georges Bank, and vicinity: a GIS Compilation: Open-File Report 03-001, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Field Center, Woods Hole, MA.

    Online Links:

    Other_Citation_Details:
    Data are released via CD-ROM media. This digital publication may also be available via the web at pubs.usgs.gov

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -70.824170
    East_Bounding_Coordinate: -67.371630
    North_Bounding_Coordinate: 44.800000
    South_Bounding_Coordinate: 42.888180

  3. What does it look like?

    mnhacoe (GIF)
    Image map showing extent and distribution of data layer coverage.

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

    Calendar_Date: 1994
    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):

      • Entity point (537)

    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?

    mnhacoe.dbf
    Shapefile Attribute Table (Source: ESRI)

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    NAI_ID
    Numeric assigned by Normandeau Associates, Inc. to distinguish dredging projects (Source: Source Authors)

    Range of values
    Minimum:10
    Maximum:1023
    Units:projects
    Resolution:1

    NAI_DRDG
    Dredge event identification number assigned by Normandeau Associates, Inc. that ties a given dredge event to a project as identified by the NAI_ID (Source: Source Authors)

    Range of values
    Minimum:10.1
    Maximum:1023.1
    Units:dredge events
    Resolution:0.1

    SAMPLEID
    Number or letter combination identifying individual samples. (Source: Original ACOE documentation)

    Numerics and characters identifying individual samples

    LATITUDE
    Latitude coordinate of sample location (Source: Original ACOE documentation)

    Range of values
    Minimum:42.82885
    Maximum:44.80000
    Units:decimal degrees
    Resolution:0.00001

    LONGITUDE
    Longitude coordinate of sample location (Source: Original ACOE documentation)

    Range of values
    Minimum:-72.02633
    Maximum:-67.37163
    Units:decimal degrees
    Resolution:0.00001

    SOURCE
    Source of the data (e.g. organization and laboratory) (Source: Normandeau Associates, Inc)

    Organization and laboratory responsible for the data

    REGFILE
    Regulatory File Number (Source: ACOE)

    Characters and numerics identifying the regulatory file

    SOIL
    Dominant soil class (Source: ACOE)

    Name of the major lithology

    GRAINMED
    Median grain size (Source: ACOE)

    Range of values
    Minimum:0.0027
    Maximum:76.5
    Units:millimeters
    Resolution:0.0001

    GRAINQ1
    First quartile of the grain-size curve (Source: ACOE)

    Range of values
    Minimum:0.170
    Maximum:90.000
    Units:percent
    Resolution:0.0001

    GRAINQ2
    Second quartile of the grain-size curve (Source: ACOE)

    Range of values
    Minimum:0.015
    Maximum:76.5
    Units:percent
    Resolution:0.0001

    GRAINQ3
    Third quartile of the grain size curve (Source: ACOE)

    Range of values
    Minimum:0.003
    Maximum:90.0
    Units:percent
    Resolution:0.0001

    GRAVEL
    Percentage of gravel (Source: ACOE)

    Range of values
    Minimum:0
    Maximum:83.0
    Units:percent
    Resolution:0.01

    SAND
    Percentage of sand (Source: ACOE)

    Range of values
    Minimum:0
    Maximum:99.9
    Units:percent
    Resolution:0.01

    SILT
    Percentage of silt (Source: ACOE)

    Range of values
    Minimum:0
    Maximum:88.0
    Units:percent
    Resolution:0.01

    CLAY
    Percentage of clay (Source: ACOE)

    Range of values
    Minimum:0
    Maximum:50.0
    Units:percent
    Resolution:0.01

    FINES
    Percentage of fines (silt plus clay) (Source: ACOE)

    Range of values
    Minimum:0
    Maximum:93.0
    Units:percent
    Resolution:0.01

    LITHOLOGY
    Textural descriptions of the sediment (Source: Compiler)

    Verbal descriptions of the sediment

    Entity_and_Attribute_Overview:
    Sample identifiers, navigation, grain-size parameters for samples from ACOE projects

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?

    Please review the cross section information for the original data set credit to Normandeau Associates (1994). Walter Barnhardt for entering the data from the source report and Larry Poppe for creating the ArcView shapefile.

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

    Lawrence J. Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    508-548-8700 x2314 (voice)
    508-457-2310 (FAX)
    lpoppe@usgs.gov

Why was the data set created?
The purpose of this data layer is to release a digital version of the sediment data published in Normandeau Associates (1994).

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

    (source 1 of 1)
    Normandeau Associates, Inc., 1994, A Dredged Material Management Study for Coastal Maine and New Hampshire: Final Report R-13116.08, 220 p. plus appendicies, Normandeau Associates, Inc., Bedford, NH.

    Type_of_Source_Media: paper

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

    Date: 04-Dec-2002 (process 1 of 1)
    The navigation and remaining source information was manually entered into digital form and imported from an ASCII text file into an ArcView table. The table was later converted to an event theme in ArcView and saved as the final shapefile.

    Person who carried out this activity:

    Lawrence J. Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    508-548-8700 x2314 (voice)
    508-457-2310 (FAX)
    lpoppe@usgs.gov

    Data sources used in this process:
    • mnhacoe.txt

    Data sources produced in this process:

    • mnhacoe.shp
    • mnhacoe.dbf
    • mnhacoe.shx

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

    All attributes were entered and checked by the compilers in a consistent manner.

  2. How accurate are the geographic locations?

    The original studies were conducted over a number of years and navigational methods were not discussed in the Normandeau Associates report. Navigational accuracy is unknown.

  3. How accurate are the heights or depths?

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

    Navigation, grain-size data, and identifiers are provided for 531 samples

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

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

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: None

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

    Lawrence J. Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    508-548-8700 x2314 (voice)
    508-457-2310 (FAX)
    lpoppe@usgs.gov

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

    Regional Mapping of Surficial Sediments: Gulf of Maine and Georges Bank, Aggregates and Habitats Projects, mnhacoe.shp

  3. What legal disclaimers am I supposed to read?

    Although this data set has been used by the U.S. Geological Survey, no warranty, expressed or implied, is made by the USGS 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 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?

    The data is available in ArcView shapefile format. The user must have ESRI's ArcView 3.0 or greater software to read and process the data file. In lieu of ArcVeiw, the user may utilize another GIS application package capable of importing data.

Who wrote the metadata?
Dates:
Last modified: 16-Feb-2003

Metadata author:
Lawrence J. Poppe
U.S. Geological Survey
Geologist
384 Woods Hole Road
Woods Hole, MA 02543-1598
USA

508-548-8700 x2314 (voice)
508-457-2310 (FAX)
lpope@usgs.gov

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Generated by mp version 2.7.3 on Sun Feb 16 11:43:24 2003

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