Shellfish Growing Areas

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Frequently-anticipated questions:


What does this data set describe?

Title: Shellfish Growing Areas
Abstract:
The North Carolina (NC) Department of Environment and Natural Resources (DENR) Division of Environmental Health (DEH) - Shellfish Sanitation and Recreational Water Quality Section (SS+RWQS) identifies Shellfish Growing Areas (SGA). The SS+RWQS performs water sampling throughout the year to determine the extent of contamination or cleanliness of SGA, and submits recommendations to the Division of Marine Fisheries (DMF) to close or open waters for shellfish harvesting. The DMF disseminates a proclamation with the SS+RWQS's recommendation. The SGA contain waters that are permanently closed (prohibited), open (approved), or subject to being opened or closed (conditionally approved - open or conditionally approved - closed).
Supplemental_Information:
For online maps of growing areas and more information, see <http://www.deh.enr.state.nc.us/shellfish/maps.htm>
  1. How should this data set be cited?

    NC, DENR-Division of Marine Fisheries; NC, DENR,, 20081001, Shellfish Growing Areas.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -79.073262
    East_Bounding_Coordinate: -75.355695
    North_Bounding_Coordinate: 36.591781
    South_Bounding_Coordinate: 33.736641

  3. What does it look like?

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

    Calendar_Date: 01-Oct-2008
    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 (8506)
      • Label point (8428)
      • GT-polygon composed of chains (8428)
      • Point (4)
      • Label point (421)

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

      Grid_Coordinate_System_Name: State Plane Coordinate System
      State_Plane_Coordinate_System:
      SPCS_Zone_Identifier: 3200
      Lambert_Conformal_Conic:
      Standard_Parallel: 34.333333
      Standard_Parallel: 36.166667
      Longitude_of_Central_Meridian: -79.000000
      Latitude_of_Projection_Origin: 33.750000
      False_Easting: 609601.220000
      False_Northing: 0.000000

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.000000
      Ordinates (y-coordinates) are specified to the nearest 0.000000
      Planar coordinates are specified in meters

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.

      Vertical_Coordinate_System_Definition:
      Altitude_System_Definition:
      Altitude_Resolution: 0.000010
      Altitude_Encoding_Method:
      Explicit elevation coordinate included with horizontal coordinates

  7. How does the data set describe geographic features?

    SGASHAPE_20081001
    Polygons for Shellfish Sanitation Areas data set. (Source: NC DENR DEH SS+RWQS)

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    DSHA_NAME
    Name of Designated Shellfish Harvesting Area (DSHA) (Source: Identified by SS+RWQS)

    Names vary (example: 'A-1')

    DSHA_NAMEI
    Name of Designated Shellfish Harvesting Area. (Source: Identified by SS+RWQS)

    Names vary (example: 'A-1')

    HA_CLASS
    Harvest area classification by DEH-SSB. (Source: Identified by SS+RWQS)

    ValueDefinition
    ApprovedOpen to shellfish harvesting.
    CSHA - ProhibitedClosed to shellfish harvesting.
    Conditionally Approved - ClosedClosed, conditionally, to shellfish harvesting.
    Conditionally Approved - OpenOpen, conditionally, to shellfish harvesting.

    HA_CLASSID
    Harvest area classification identifier (Source: Identified by SS+RWQS)

    ValueDefinition
    APPApproved
    CHSA-PCSHA-Prohibited
    CA-CConditionally Approved - Closed
    CA-OConditionally Approved - Open

    HA_NAME
    Name of harvest area. (Source: Identified by SS+RWQS)

    Names vary.

    HA_STATUS
    Harvest area status. (Source: Identified by SS+RWQS)

    ValueDefinition
    openHarvest area open to shellfishing.
    closedHarvest area closed to shellfishing.

    COUNTY
    NC counties. (Source: Identified by SS+RWQS)

    Formal codeset
    Codeset Name:100 Counties of North Carolina
    Codeset Source:State of North Carolina

    SURFACE
    Type of surface feature for polygon. (Source: Identified by SS+RWQS)

    ValueDefinition
    waterSurface waters.
    mhwMean high waters.
    landLand.
    canalMan-made canals.

    DATE_CREAT
    Date polygon was created. (Source: SS+RWQS)

    Dates vary.

    DATE_UPDAT
    Date polygon status was updated. (Source: SS+RWQS)

    Dates vary.

    Shape_Area
    Area of feature in internal units squared. (Source: ESRI)

    Positive real numbers that are automatically generated.

    ACRES
    Acreage of polygons. (Source: Calculated value)

    Positive real numbers that are automatically generated.

    Entity_and_Attribute_Overview: Attributes include classification of shellfish growing areas.
    Entity_and_Attribute_Detail_Citation: None available


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?

    Shellfish Sanitation and Recreational Water Quality Section of the NC Division of Environmental Health; NC Division of Marine Fisheries

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

    NC DENR DEH Shellfish Sanitation and Recreational Water Quality Section
    c/o Program Manager for Shellfish Sanitation
    Program Manager for Shellfish Sanitation
    Post Office Box 769
    Morehead City, NC 28557-0769
    USA

    (252) 726-6827 (voice)

    Hours_of_Service: 8:00 - 5:00 PM


Why was the data set created?

The SGA contain waters that are permanently closed (prohibited), open (approved), or subject to being opened or closed (conditionally approved - open or conditionally approved - closed).


How was the data set created?

  1. From what previous works were the data drawn?

    None (source 1 of 3)
    Survey, US Geological , 1990, USGS 7.5 Minute series quadrangles: US Geological Survey, Reston, Virginia.

    Other_Citation_Details: Published map series
    Type_of_Source_Media: CD-ROM
    Source_Scale_Denominator: 24000
    Source_Contribution: Digital files used to delineate the boundaries

    none (source 2 of 3)
    Counties of North Carolina, Unknown, County digital orthophotograpy: varies by county, varies by county.

    Other_Citation_Details: none
    Type_of_Source_Media: CD-ROM
    Source_Scale_Denominator: 12000
    Source_Contribution: Reference layer used to delineate the boundaries

    GPS (source 3 of 3)
    Shellfish Sanitation and Recreational Water Quality Section, Unknown, None: Shellfish Sanitation and Recreational Water Quality Section, varies by county.

    Other_Citation_Details: none
    Type_of_Source_Media: online
    Source_Scale_Denominator: 200
    Source_Contribution: Reference points used to delineate the boundaries

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

    Date: Unknown (process 1 of 2)
    GPS points collected with mapping grade GPS receivers, data post-processed with Trimble software, points entered into GIS, points used to create boundary lines and the closing of polygons to determine areas.

    Person who carried out this activity:

    Program Manager
    Shellfish Sanitation and Recreational Water Quality Section
    Program Manager
    PO Box 769
    Morehead City, NC 28557-0769
    USA

    (252) 726-6827 (voice)

    Date: Unknown (process 2 of 2)
    Points entered into GIS; points used to create boundary lines and the closing of polygons to determine areas.

    Person who carried out this activity:

    Shellfish Sanitation and Recreational Water Quality Section
    Program Manager
    PO Box 769
    Morehead City, NC 28557-0769
    USA

    (252) 726-6827 (voice)

  3. What similar or related data should the user be aware of?


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

    The Shellfish Sanitation and Recreational Water Quality Section delineated the boundaries and associated classifications based on program documents.

  2. How accurate are the geographic locations?

    Shellfish growing areas were delineated using 1:24,000-scale maps, 1:12,000-scale ortho imagery, and 1:200-scale GPS points for reference.

  3. How accurate are the heights or depths?

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

    Dataset is a representation of all shellfish growing areas in North Carolina

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

    Using a GIS software (ESRI's ARCGIS) polygons were created to represent shellfish growing areas as well as non-growing areas for a complete representation of coastal areas.


How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints:
Please contact the Shellfish Sanitation and Recreational Water Quality Section (SS+RWQS) for information on this dataset.
Use_Constraints:
This data consists of shellfish classifications valid through 10/01/2008. Please contact the Shellfish Sanitation and Recreational Water Quality Section (SS+RWQS) for information on this dataset.

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

    NC DENR DEH Shellfish Sanitation and Recreational Water Quality Section
    c/o GIS Analyst
    GIS Analyst
    Post Office Box 769
    Morehead City, NC 28557-0769
    USA

    (252) 726-6827 (voice)

    Hours_of_Service: 8:00 AM - 5:00 PM
  2. What's the catalog number I need to order this data set?

    The North Carolina (NC) Department of Environment and Natural Resources (DENR) Division of Environmental Health (DEH) - Shellfish Sanitation and Recreational Water Quality Section (SS+RWQS) identifies Shellfish Growing Areas (SGA). The SS+RWQS performs water sampling throughout the year to determine the extent of contamination or cleanliness of SGA, and submits recommendations to the Division of Marine Fisheries (DMF) to close or open waters for shellfish harvesting. The DMF disseminates a proclamation with the SS+RWQS's recommendation. The SGA contain waters that are permanently closed (prohibited), open (approved), or subject to being opened or closed (conditionally approved - open or conditionally approved - closed).

  3. What legal disclaimers am I supposed to read?

    NC OneMap Database is a cooperative effort of the NC Geographic Information Coordinating Council. The datasets distributed through the NC OneMap website are collected from multiple sources with the intention of creating access to accurate, useful, and current information about the state. Although every effort has been made to ensure the accuracy of information, errors and conditions originating from physical sources used to develop the datasets may be reflected in the data supplied. The user bears responsibility for the appropriate use of the information with respect to possible errors,original map scale, collection methodology, currency of data, and other conditions specific to certain data. An updated version of a particular dataset may be available. In addition, the use of trade names or commercial products does not constitute their endorsement by the GICC or North Carolina State Government.

  4. How can I download or order the data?

  5. Is there some other way to get the data?

    Contact Shellfish Sanitation and Recreation Water Quality Section.


Who wrote the metadata?

Dates:
Last modified: 01-Oct-2008
Last Reviewed: 01-Oct-2008
Metadata author:
NC DENR DEH Shellfish Sanitation and Recreational Water Quality Section
c/o GIS Analyst for Shellfish Sanitation
GIS Analyst for Shellfish Sanitation
PO Box 769
Morehead City, NC 28557-0769
USA

(252) 726-6827 (voice)
(252) 726-8475 (FAX)

Hours_of_Service: 8:00 AM - 5:00 PM
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:


Generated by mp version 2.9.5 on Tue Sep 30 14:36:01 2008