Metadata:
  Identification_Information:
 
    Citation:
      Citation_Information:
        Originator:  Comprehensive Coastal Inventory, Virginia Institute of 
          Marine Science
        Publication_Date: 2002
        Title: Accomack County Shoreline Situation Report - 2002
        Geospatial_Data_Presentation_Form: vector digital data
        Series_Information:
          Series_Name: Special Report in Applied Marine Science and Ocean
            Engineering No. 374 of the Virginia Institute of Marine Science
          Issue_Identification: SRAMSOE No. 374
        Publication_Information:
          Publication_Place: Gloucester Point, Virginia
          Publisher: Virginia Institute of Marine Science
        Other_Citation_Details:
          Berman, M.R., Berquist, H., Dewing, S., Glover, J., Hershner, C.H.,
          Rudnicky, T., and Schatt, D.E. 2002.  Accomack County Shoreline 
          Situation Report, Special Report in Applied Marine Science 
          and Ocean Engineering No. 374, Comprehensive Coastal Inventory 
          Program, Virginia Institute of Marine Science, College of William 
          and Mary, Gloucester Point, Virginia, 23062.
        Online_Linkage: <URL:http://www.vims.edu/ccrm/gis/gisdata.html
 
    Description:
 
      Abstract: Shoreline Situation Reports (SSR) were first generated by VIMS
        in the 1970s to report the condition and status of the shore lands. 
        The SSR series were published in hardcopy on a county by county basis
        for each of the Tidewater Virginia localities. The reports were 
        intended to assist planners, managers, and regulators in decisions
        pertaining to management of coastal areas and natural resources 
        therein. This report continues the process which updates 
        and expands earlier reports. Data collected describes conditions 
        in the immediate riparian zone, the bank, and along the shore. 
 
      Purpose: To inventory Virginia's tidal shoreline conditions.
  
      Supplemental_Information: 
        There are three coverages that are included in this metadata file; 
        acco_lubc, acco_astru, acco_sstru. Acco_lubc (land use and bank 
        cover for Accomack County) is an arc coverage containing data about 
        the land use, bank height, bank cover, erosion, marsh, and beach status 
        along the shoreline. Acco_sstru (Accomack County shoreline structures) 
        is an arc coverage delineating hard structures in place for shoreline 
        protection (bulkhead, riprap, groin fields). Acco_astru (Accomack  
        County access structures) coverage is a point coverage with locations 
        of docks, ramps, and boathouses. The attributes of these three 
        coverages are explained in the Entity and Attribute Information section 
        below.
         
    Time_Period_of_Content:
      Time_Period_Information:
        Single_Date/Time:
          Calendar_Date: 2000
      Currentness_Reference: ground condition at time of survey.
 
    Status:
      Progress: Complete
      Maintenance_and_Update_Frequency: Unknown
 
    Spatial_Domain:
      Bounding_Coordinates:
        West_Bounding_Coordinate: -75.94695865
        East_Bounding_Coordinate: -75.25977224
        North_Bounding_Coordinate: 38.01214635
        South_Bounding_Coordinate: 37.45129907
 
    Keywords:
      Theme:
        Theme_Keyword_Thesaurus: none
        Theme_Keyword: Shoreline condition
        Theme_Keyword: Shoreline structures
      Place:
        Place_Keyword_Thesaurus: none
        Place_Keyword: Virginia
        Place_Keyword: Eastern Shore 
        Place_Keyword: Accomack County
        Place_Keyword: Beasley Bay
        Place_Keyword: Chincoteague Island
 
    Access_Constraints: none

    Use_Constraints:
       These data should not be used for jurisdictional permit determinations 
       beyond providing general shoreline condition or status information. 
       These data have not been surveyed to property boundaries.

 
    Point_of_Contact:
      Contact_Information:
        Contact_Person_Primary:
          Contact_Person: Marcia Berman
          Contact_Organization:  Virginia Institute of Marine Science (VIMS)
        Contact_Position: Director Comprehensive Coastal Inventory Program
        Contact_Address:
          Address_Type: mailing address
          Address: P.O. Box 1346
          City: Gloucester Point
          State_or_Province: Virginia
          Postal_Code: 23062
          Country: USA
        Contact_Voice_Telephone: (804) 684-7188
        Contact_Facsimile_Telephone: (804) 684-7179
        Contact_Electronic_Mail_Address: marcia@vims.edu
 
    Data_Set_Credit:
      Collection of the data would not have been possible without
      the cooperation of VIMS Vessel Center. The following CCI 
      staff participated in the data collection: Marcia Berman, Harry 
      Berquist, Sharon Dewing, Julie Glover, Tami Rudnicky, and Dan Schatt.
 
    Native_Data_Set_Environment:
      SunOS, 5.7, sun4u UNIX
      ARC/INFO version 7.2.1
 
  Data_Quality_Information:
    Attribute_Accuracy:
      Attribute_Accuracy_Report:
        The attributes were compared to original GPS data logs for accuracy. 
        Errors were corrected where noted.
 
    Logical_Consistency_Report:
      Chain-node topology present. Linear coverages were built for line and 
      point coverages were built for points.
 
    Completeness_Report:
      All Accomack County shoreline on the Chesapeake Bay that has a minimum 
      depth of 2 feet at mean low water was surveyed. The following areas on 
      the Oceanside of Accomack County were surveyed: Folly Creek, Gargathy
      Creek, Assawoman Creek, Chincoteague Island, and the stretch of shoreline 
      between Sinnickson and Greenbackville. Areas inaccessible by boat
      have been remote surveyed (land use, marsh, beach, and structures coded 
      by looking at the digital orthophoto quarter quads).
 
    Positional_Accuracy:
      Horizontal_Positional_Accuracy:
        Horizontal_Positional_Accuracy_Report:
          Shoreline structures were recorded with a GPS unit as the boat moved
          along the shoreline. Data was transferred from the GPS boat track to
          an existing digital shoreline coverage by projecting data to the 
          shoreline at a 90 degree angle from the boat track. Rectified 
          digital orthophoto quads were used as a background coverage to aid 
          in data positioning. Dock and boathouse point data were aligned with 
          docks on the images. Land use features were placed along the shore 
          so changes in land use were coincident with changes illustrated in 
          the imagery. Positional accuracy for data that has been corrected 
          with imagery is +/- 2 meters (equivalent to image resolution). Data 
          not visable on the imagery (bulkheads, riprap, etc.) has a  
          positional accuracy of +/- 11 meters. Accuracy was determined by 
          comparing digitally processed data locations to onsite GPS ground 
          surveys collected at random.
 
    Lineage:
      Source_Information:
        Source_Citation:
          Citation_Information:
            Originator: U.S. Geological Survey
            Publication_Date: 1994
            Title: Digital Orthophoto Quadrangles
            Geospatial_Data_Presentation_Form: remote-sensing image
            Publication_Information:
              Publication_Place: Reston, VA
              Publisher: U.S. Geological Survey
        Type_of_Source_Media: color infra-red digital imagery
        Source_Time_Period_of_Content:
          Time_Period_Information:
            Range_of_Dates/Times:
              Beginning_Date: 19940312
              Ending_Date: 19940402
          Source_Currentness_Reference: ground condition
        Source_Citation_Abbreviation: DOQQ
        Source_Contribution: 
          Serves as a background coverage in the map portfolios. Used to 
          accurately position land use and cover data. Used to create a new
          digital shoreline coverage that serves as the base shoreline for
          shoreline conditions.
 
      Process_Step:
        Process_Description: 
          Data was collected by a three-person field crew (two data 
          collectors and one boat operator) using two hand-held Trimble 
          GeoExplorers GPS Units, while navigating along the shoreline. 
          A data dictionary designed for the inventory was installed on each 
          GPS Unit. One data collector records natural features including 
          land use, bank height, bank cover, presence of marsh or beach, and 
          shoreline stability. A second person collects data on the hardened 
          structures: riprap, bulkheads, docks, boatramps, etc. Point 
          features (docks, boathouses, ramps) were surveyed with a ten second 
          observation recorded at 1 reading/second. Linear features were
          surveyed kinematically at a rate of one observation every 3 seconds.
        Process_Date: 2000

      Process_Step:
        Process_Description: 
          Data from the GPS units were postprocessed on a PC with Trimble 
          Pathfinder Office software. Postprocessing included differential 
          correction using base station data collected at the VIMS laboratory. 
          Corrected data is converted into ArcInfo coverages and transfered 
          to a UNIX workstation for further processing.
        Process_Date: 2001

      Process_Step:
        Process_Description: 
          Using ArcInfo and ERADAS Imagine in the UNIX environment, a new 
          base shoreline was created by digitizing the land-water interface 
          illustrated on the DOQQs. Accomack County boundary (determined 
          from the USGS DLG digital dataset (1990)) set the limits for
          Accomack shoreline. All the bayside shoreline was digitized with 
          the exception of Tangier Island and associated islands. The 
          mainland on the oceanside of the county and some of the barrier
          islands and marshs were digitized.
        Source_Used_Citation_Abbreviation: DOQQ
        Process_Date: 2001

      Process_Step:
        Process_Description: 
          In the UNIX ArcInfo environment, boat-track points and arcs were 
          manually shifted to the base shoreline.  Arcs were split 
          and points were moved to locations on the shoreline that were
          perpendicular to the original locations on the boat-track. Shoreline 
          arcs segments and points were coded, and the coverages were visually 
          checked for attribute accuracy between coded shoreline and boat-track 
          data. 
        Source_Used_Citation_Abbreviation: DOQQ
        Process_Date: 2001

      Process_Step:
        Process_Description: 
          Land use, dock, and boathouse locations were digitally
          checked and repositioned if necessary with DOQQ imagery
          displayed as a background coverage. This was done using ArcInfo's
          ArcEdit capabilities. 
        Source_Used_Citation_Abbreviation: DOQQ
        Process_Date: 2001

      Process_Step:
        Process_Description:  
          Data received a final check in hard copy format.   
        Process_Date: 2001

      Process_Step:
        Process_Description:  
          A portfolio containing fortythree 1:12,000 scale plates and three 
          1:24,000 scale plates for a total of fortysix plates was
          created for Accomack County. Each plate shows three maps:
          riparian land use, bank and buffer conditions, and shoreline 
          features. DOQQ imagery is displayed in the background to provide
          users with additional information.  
        Process_Date: 2002 

  Spatial_Data_Organization_Information:
    Direct_Spatial_Reference_Method: Vector
    Point_and_Vector_Object_Information:
      SDTS_Terms_Description:
        SDTS_Point_and_Vector_Object_Type:  String
        Point_and_Vector_Object_Count: 5150
      SDTS_Terms_Description:
        SDTS_Point_and_Vector_Object_Type:  String
        Point_and_Vector_Object_Count: 3132
      SDTS_Terms_Description:
        SDTS_Point_and_Vector_Object_Type:  Point
        Point_and_Vector_Object_Count: 817

 
  Spatial_Reference_Information:
    Horizontal_Coordinate_System_Definition:
      Planar:
        Grid_Coordinate_System:
          Grid_Coordinate_System_Name: Universal Transverse Mercator
          Universal_Transverse_Mercator
            UTM_Zone_Number: 18
            Transverse_Mercator
              Scale_Factor_at_Central_Meridian: .9996
              Longitude_of_Central_Meridian: -75W
              Latitude_of_Projection_Origin: 0.0
              False_Easting: 500000
              False_Northing: 0.0
        Planar_Coordinate_Information:
          Planar_Coordinate_Encoding_Method: coordinate pair
          Coordinate_Representation:
            Abscissa_Resolution: 6.1842
            Ordinate_Resolution: 6.1842
          Planar_Distance_Units: Meters
      Geodetic_Model:
        Horizontal_Datum_Name: North American Datum of 1983
        Ellipsoid_Name:  GRS1980
        Semi-major_Axis: 6378206.4
        Denominator_of_Flattening_Ratio: 294.98
 
  Entity_and_Attribute_Information:
    Overview_Description:
      Entity_and_Attribute_Overview:
        Below is a listing of the attributes found in the three coverages 
        (_lubc, _sstru, and _astru). The first seven items found in the .aat
        files and the first four items in the .pat file are ArcInfo generated.
        Acco_lubc contains duplicate items; items with a 'c' suffix contain 
        text. FEATURE and FEATUREC contain land use and have the following 
        values: 0 or ' ' = no data, 1 = forested, 2 = scrub-shrub, 3 = grass, 
        4 = residential, 5 = commercial, 6 = bare, 7 - timbered, 
        10 = agriculture, 11 - paved, and 12 - industrial. HEIGHT and HEIGHTC 
        is the bank height with 0 or ' ' = no data, 1 = 0 - 5 feet, 2 = 5 - 10 
        feet, 3 = 10 - 30 feet, and 4 = greater than 30 feet. COVER and COVERC 
        describe the bank cover where 0 or ' ' = no data, 1 = bare or less 
        than 25% covered, 2 = partial coverage (25-75% coverage), and 3 = full
        coverage (greater than 75% coverage).  EROS and EROSC are the bank 
        erosion condition where 0 or ' ' is no data, 1 is low erosion and 2 
        is high erosion. MARSH and MARSHC define 0 or ' ' = no data, 1 = marsh 
        eroding, 2 = marsh not eroding, and 3 = no marsh. BEACH and BEACHC 
        define 0 or ' ' = no data, 1 = beach eroding, 2 = beach not eroding,
        and 3 = no beach.  REMOTE refers to how the data was gathered: a blank
        value or an "n" indicates the data was collected with the GPS unit in 
        the field, a "y" indicates that the shoreline attributes where 
        determined from the DOQQ imagery. However, an empty REMOTE value 
        along with other empty values indicates no data was collected. 
        STRUCTURE contains the types of shoreline structures found in Accomack
        County: bulkhead, riprap, jetty, breakwater, groinfields, miscellaneous
        (bricks, timbers, concrete blocks, tires, etc.), and marina. PNTSTRUC 
        contains the types of access structures or points of interest found 
        within the county: docks/piers, boathouses, public and private ramps, 
        and other points of interest. 

        >
        >ACCO_LUBC.AAT:
        >
        >COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
        >    1  FNODE#                 4     5     B      -
        >    5  TNODE#                 4     5     B      -
        >    9  LPOLY#                 4     5     B      -
        >   13  RPOLY#                 4     5     B      -
        >   17  LENGTH                 8    18     F      5
        >   25  ACCO_LUBC#             4     5     B      -
        >   29  ACCO_LUBC-ID           4     5     B      -
        >   33  FEATURE                2     2     I      -
        >   35  HEIGHT                 1     1     I      -
        >   36  COVER                  1     1     I      -
        >   37  EROS                   1     1     I      -
        >   38  MARSH                  1     1     I      -
        >   39  BEACH                  1     1     I      -
        >   40  REMOTE                 2     2     C      -
        >   42  FEATUREC              25    25     C      -
        >   67  HEIGHTC                6     6     C      -
        >   73  COVERC                 8     8     C      -
        >   81  EROSC                 10    10     C      -
        >   91  MARSHC                20    20     C      -
        >  111  BEACHC                20    20     C      -
        >
        >
        >ACCO_SSTRU.AAT:
        >
        >COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
        >    1  FNODE#                 4     5     B      -
        >    5  TNODE#                 4     5     B      -
        >    9  LPOLY#                 4     5     B      -
        >   13  RPOLY#                 4     5     B      -
        >   17  LENGTH                 8    18     F      5
        >   25  ACCO_SSTRU#            4     5     B      -
        >   29  ACCO_SSTRU-ID          4     5     B      -
        >   33  STRUCTURE             30    30     C      -
        >   63  REMOTE                 2     2     C      -
        >
        >
        >ACCO_ASTRU.PAT:
        >
        >COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
        >    1  AREA                   8    18     F      5
        >    9  PERIMETER              8    18     F      5
        >   17  ACCO_ASTRU#            4     5     B      -
        >   21  ACCO_ASTRU-ID          4     5     B      -
        >   25  PNTSTRUC              30    30     C      -
        >   55  REMOTE                 2     2     C      -
        >
        >

      Entity_and_Attribute_Detail_Citation: none
 
  Distribution_Information:
    Distributor:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: Virginia Institute of Marine Science (VIMS)
        Contact_Position: Director Comprehensive Coastal Inventory Program
        Contact_Address:
          Address_Type: mailing address
          Address: P.O. Box 1346
          City: Gloucester Point
          State_or_Province: Virginia
          Postal_Code: 23062
          Country: USA
        Contact_Voice_Telephone: (804) 684-7188
        Contact_Instructions: Contact via email
        Contact_Electronic_Mail_Address: marcia@vims.edu
 
    Distribution_Liability:
 
      The Comprehensive Coastal Inventory Program (CCI) at VIMS performs
      a service by distributing data generated by either CCI or public
      agencies which offer data without restriction or charge. CCI
      assumes no responsibility for data accuracy or precision, metadata
      completeness or correctness for digital information. CCI assumes no
      liability for misuse of any data which may arise as a result of any
      alteration, conversion, or combination with other data sources. As
      well, the timeliness and scale of these products must be considered
      when evaluating appropriate use.
 
  Metadata_Reference_Information:
    Metadata_Date: 20011031
    Metadata_Contact:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization:  Virginia Institute of Marine Science (VIMS)
          Contact_Person: Tamia Rudnicky
        Contact_Position: GIS Programmer/Analyst
        Contact_Address:
          Address_Type:  mailing address
          Address: P.O. Box 1346
          City: Gloucester Point
          State_or_Province: Virginia
          Postal_Code: 23062
          Country: USA
        Contact_Voice_Telephone: (804) 684-7181
        Contact_Facsimile_Telephone: (804) 684-7179
        Contact_Electronic_Mail_Address: tamia@vims.edu
    Metadata_Standard_Name:
      FGDC Content Standards for Digital Geospatial Metadata
    Metadata_Standard_Version: FGDC-STD-001-1998
    Metadata_Access_Constraints: none
    Metadata_Use_Constraints: none