Identification_Information:
  Citation:
    Citation_Information:
      Originator: Air Survey Corporation Sterling, Virginia
      Publication_Date: 19961029
      Publication_Time: Unknown
      Title: Rock Creek Park
      Edition: Version 1.0
      Geospatial_Data_Presentation_Form: image
      Series_Information:
        Series_Name: 1.0
        Issue_Identification: Unknown
      Publication_Information:
        Publication_Place: Sterling Virginia
        Publisher: Air Survey Corporation
      Other_Citation_Details: The aerial photography is CIR 1:6,000 scale.
      Online_Linkage: http://biology.usgs.gov/npsveg/rocr/index.html
  Description:
    Abstract:
      The National Park Service (NPS), in conjunction
      with the Biological Resources Division (BRD) of
      the U.S. Geological Survey (USGS), has implemented
      a program to "develop a uniform hierarchical
      vegetation methodology" at a national level.  The
      program will also create a geographic information
      system (GIS) database for the parks under its
      management.  The purpose of the data is to
      document the state of vegetation within the NPS
      service area during the 1990's, thereby providing
      a baseline study for further analysis at the
      Regional or Service-wide level.  Aerial
      Information Systems (AIS) was subcontracted by
      Environmental Systems Research Institute (ESRI),
      the prime contractor, to perform the
      photointerpretation for the program.  ESRI
      subcontracted The Nature Conservancy (TNC) to
      conduct the field sampling effort and to support
      the development of the National Standard
      Classification.
    Purpose:
      Several parks, representing different regions,
      environmental conditions, and vegetation types,
      were chosen by BRD to be part of the prototype
      phase of the program.  The initial goal of the
      prototype phase is to "develop, test, refine, and
      finalize the standards and protocols" to be used
      during the production phase of the project.  This
      includes the development of a standardized
      vegetation classification system for each park and
      the establishment of photointerpretation, field,
      and accuracy assessment procedures.  Rock Creek
      Park, established in 1890, was designated as one
      of the prototype parks.  The park is located on
      the fall line between the Atlantic coastal plain
      and the piedmont.  The main portion of the park is
      bounded on the north by the Maryland State line
      and on the south by the Virginia State line.  Its
      western edge follows along Oregon Avenue, and it
      is bounded on the east by 16th Street NW.  The
      western outlying portions of the Park extend to
      and slightly beyond Nebraska Avenue NW.  The
      eastern outlying portions extend from 16th Street
      NW to the junction of US Highway 1 and the
      Maryland border.  The park is noted for having
      exceptional resources, including six natural
      resources that maintain its significance within
      the National Park System.  Included in these six
      natural resources, are three that are directly
      related to the vegetation of the park.  They are:
      1) Deciduous forests, 2) Wetlands, and 3) Plant
      species protected in both Virginia and Maryland.
      Based on these and other resources, Rock Creek
      Park is divided up into nine management zones
      pertaining to vegetation, automobile access,
      recreation, administration, and cultural
      resources.
    Supplemental_Information:
      Rock Creek is one of the largest forested urban
      parks in the United States, with more the  of the
      park's approximately 2,760 acres covered by mature
      deciduous forest. A significant portion of this
      forest is second growth, with a moderately high
      diversity in canopy and understory species.  Rock
      Creek Park is made up of steep canyons and side
      slopes that bisect several significant east-west
      trending ridgelines.  The park descends along the
      fall line through numerous small rapids along the
      creek.  Rock Creek itself, descends over 150' from
      the state line to its confluence with the Potomac
      River.  Flood plain development is fairly
      restrictive, limited primarily to Rock Creek
      itself.  Broad Branch, the main tributary to Rock
      Creek within the park, flows southeasterly and
      joins Rock Creek towards the southern portion of
      the park. At the confluence, the park boundary
      significantly narrows in its east-west extent.
      All sections are accessible either by automobile
      or by hiking.  Most portions of the park are
      accessible through short hikes, usually under one
      mile.  Gradients above the floodplain are
      surprisingly steep, and make for some moderate
      hiking.  For purposes of vegetation mapping, the
      park was divided into four sections pertaining
      primarily to its location on the fall line between
      the coastal plain and piedmont.  The park was
      further divided into the main portion of the park
      (containing Rock Creek), and the various outliner
      portions of the park to the east and west.
  Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 19961029
    Currentness_Reference: Source_Photography_Date
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: None Planned
  Spatial_Domain:
    Description_of_Geographic_Extent:
      The park is located on the fall line between the
      Atlantic coastal plain and the piedmont.  The main
      portion of the park is bounded on the north by the
      Maryland State line and on the south by the
      Virginia State line.  Its western edge follows
      along Oregon Avenue, and it is bounded on the east
      by 16th Street NW.  The western outlying portions
      of the Park extend to and slightly beyond Nebraska
      Avenue NW.  The eastern outlying portions extend
      from 16th Street NW to the junction of US Highway
      1 and the Maryland border.
    Bounding_Coordinates:
      West_Bounding_Coordinate: 77.1
      East_Bounding_Coordinate: 77
      North_Bounding_Coordinate: 38.98333
      South_Bounding_Coordinate: 38.9
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: National Park Service
      Theme_Keyword: U.S. Geological Service
      Theme_Keyword: The Nature Conservancy
      Theme_Keyword: Aerial Information Systems
      Theme_Keyword: Center for Biological Informatics
      Theme_Keyword: land cover
      Theme_Keyword: vegetation
      Theme_Keyword: community
      Theme_Keyword: association
    Place:
      Place_Keyword_Thesaurus: None
      Place_Keyword: Rock Creek Park
      Place_Keyword: Washington D.C.
      Place_Keyword: USA
    Stratum:
      Stratum_Keyword_Thesaurus: None
      Stratum_Keyword: Glover Archbold Park and Environs
      Stratum_Keyword: Fort Totten Park, Barnard Hill Park and Environs
      Stratum_Keyword: Land Use Areas of the Park
      Stratum_Keyword: Coastal Plain
      Stratum_Keyword: Piedmont
      Stratum_Keyword: Forest Zone
    Temporal:
      Temporal_Keyword_Thesaurus: None
      Temporal_Keyword: Data Represents October 1996
  Taxonomy:
    Keywords/Taxon:
      Taxonomic_Keyword_Thesaurus: None
      Taxonomic_Keywords: National Vegetation Classification System
    Taxonomic_System:
      Classification_System/Authority:
        Classification_System_Citation:
          Citation_Information:
            Originator:
              United States Department of the Interior National
              Biological Survey and National Park Service
            Publication_Date: 19941101
            Title:
              Standardized National Vegetation Classification
              System
            Edition: Version 1
            Geospatial_Data_Presentation_Form: Classification System
            Series_Information:
              Series_Name: NBS/NPS Vegetation Mapping Program
              Issue_Identification: Final Draft
            Publication_Information:
              Publication_Place: Redlands, California
              Publisher: ESRI
            Other_Citation_Details: Prepared by the Nature Conservancy
      Identification_Reference:
        Citation_Information:
          Originator:
            United States Department of the Interior National
            Biological Survey and National Park Service
          Publication_Date: 19941101
          Title:
            Standardized National Vegetation Classification
            System
          Edition: Version 1
          Geospatial_Data_Presentation_Form: Classification System
          Series_Information:
            Series_Name: NBS/NPS Vegetation Mapping Program
            Issue_Identification: Final Draft
          Publication_Information:
            Publication_Place: Redlands, California
            Publisher: ESRI
          Other_Citation_Details: Prepared by the Nature Conservancy
      Taxonomic_Procedures:
        See "Photo Interpretation Report, BRD/NPS Vegetation and Inventory and Mapping Program,
        Rock Creek Park," October 1, 1998 http://biology.usgs.gov/npsveg/rocr/rocrpirpt.pdf
      Taxonomic_Completeness: Complete
    General_Taxonomic_Coverage:
      Vegetation Alliances of the National Vegetation
      Classification System (October 1995)
    Taxonomic_Classification:
      Taxon_Rank_Name: Kingdom
      Taxon_Rank_Value: Plantae
  Access_Constraints: None
  Use_Constraints:
    Any person using the information presented here
    should fully understand the data collection and
    compilation procedures, as described in these
    metadata, before beginning analysis.  The burden
    for determining fitness for use lies entirely with
    the user.  For purposes of publication or
    dissemination, citations should be given to the
    U.S. Geological Survey and the National Park
    Service
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Person: USGS-NPS Vegetation Mapping Program Coordinator
        Contact_Organization:
          USGS Biological Resources Division, Center for Biological
          Informatics
      Contact_Address:
        Address_Type: Physical Address
        Address: USGS
        Address: Biological Resources Division, CBI
        Address: Building 810, Room 8000
        City: Denver
        State_or_Province: Colorado
        Postal_Code: 80225-0046
        Country: USA
      Contact_Address:
        Address_Type: Mailing Address
        Address: USGS
        Address: Biological Resources Division, CBI
        Address: PO BOX 25046, DFC, MS302
        City: Denver
        State_or_Province: Colorado
        Postal_Code: 80225-0046
        Country: USA
      Contact_Voice_Telephone: (303) 202-4220
      Contact_Facsimile_Telephone: 303-202-4229
      Contact_Facsimile_Telephone: 303-202-4219 (org)
      Contact_Electronic_Mail_Address: gs-b-npsveg@usgs.gov
  Browse_Graphic:
    Browse_Graphic_File_Name: http://biology.usgs.gov/npsveg/rocr/images/rocrveg.pdf
    Browse_Graphic_File_Description: 218 Kbyte graphic in map composition layout
    Browse_Graphic_File_Type: PDF
  Security_Information:
    Security_Classification_System: None
    Security_Classification: None
    Security_Handling_Description: None
  Native_Data_Set_Environment: UNIX-ARC/INFO
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report:
      Code verification involved running each
      coverage attribute file through a series of ARC/INFO
      commands that checked for invalid codes.  These
      commands produced listings that aided in
      identifying abnormal codes.  The errors were
      checked against the vegetation delineation
      and attribute overlays.  Corrections were made to
      the listings and input into the database.   ESRI
      produced a plot of the converted spatial data and
      sequence numbers (label I.D.s) for the manuscript.
      The plot was checked by AIS for cartographic
      quality of the arcs defining the polygon features
      and the accuracy of the label I.D. assignments.
      The plot was overlaid to the manuscript map to
      verify that the scanned data was not distorted
      beyond .02 map inches.  Other problems were noted
      on the plots, such as overshoots and undershoots,
      missing lines, premature convergence of polygon
      boundary lines that intersected arcs at acute
      angles, and incorrect sequence number assignments.
      ESRI produced code verification plots of the
      community association codes, height and density
      codes, and land use code attributes.  The plots
      were checked for coding errors that may have
      occurred during the polygon attribute encoding
      step.  The plots were overlaid on the manuscript
      map with attached corresponding code attribute
      overlay created in the manual rectification step.
      Code changes were noted on the plot.  The edited
      plots were delivered back to ESRI for correction
      of the attribute files.   Processors conducted
      interactive ARCEDIT sessions to make the necessary
      corrections to the coverages.
  Logical_Consistency_Report:
    All polygon features are checked for topology
    using the ARC/INFO software.  Each polygon begins
    and ends at the same point with the node feature.
    All nodes are checked for error so that there are
    no dangling features.  There are no duplictae
    lines or polygons.  All nodes will snap together
    and close polygons based on a specific tolerance.
    If the node is not within the tolerance, it is
    adjusted manually.  The test for logical
    consistency are performed in ARC/INFO.
  Completeness_Report:
    All data that can be photointerpreted is also
    digitized.  This includes alliance/association
    classes, surface water, and unvegetated/landuse.
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report:
        Unknown.  The positional accuracy of the base
        digital ortho image is not known.  It is assumed
        the map meets National Map Accuracy Standards.
    Vertical_Positional_Accuracy:
      Vertical_Positional_Accuracy_Report:
        Unknown.  The positional accuracy of the base
        digital ortho image is not known.  It is assumed
        the map meets National Map Accuracy Standards.
  Lineage:
    Methodology:
      Methodology_Type: Field
      Methodology_Identifier:
        Methodology_Keyword_Thesaurus: None
        Methodology_Keyword: AIS
      Methodology_Description:
        The normal process in vegetation mapping is to
        conduct an initial field reconnaissance, map the
        vegetation units through photointerpretation, then
        conduct a field verification. The field reconnaissance
        visit serves two major functions. First, the
        photointerpreter keys the signature on the aerial
        photos to the vegetation on the ground at each
        signature site. Second, the photointerpreter becomes
        familiar with the flora, vegetation communities and local
        ecology that occur in the study area. Park and /or
        TNC field biologists that are familiar with the local
        vegetation and ecology of the park are present to help
        the photointerpreter understand these elements and their
        relationship with the geography of the park.

        Upon completion of the field reconnaissance, photo
        interpreters delineate vegetation units on mylar that overlay
        the 9x9 aerial photos. This effort is conducted in
        accordance with the TNC vegetation classification and
        criteria for defining each community or alliance. The initial
        mapping is then followed by a field verification session,
        whose purpose is to verify that the vegetation units were
        mapped correctly. Any PI related questions are also
        addressed during the visit.

        The vegetation mapping at Rock Creek Park in general
        followed the normal mapping procedure as described above.
        However, a TNC vegetation classification did not exist for
        Rock Creek Park at the time the initial delineations commenced.
        The TNC ecologist and AIS photo interpreters worked together
        to develop a temporary signature key which addressed what
        was known at the time. Unlike most parks, no existing plot
        data was available to create an interim classification.
      Methodology_Citation:
        Citation_Information:
          Originator: Aerial Information Systems (AIS)
          Publication_Date: Unpublished Material
          Publication_Time: Unknown
          Title:
            Photo Interpretation Report USGS-NPS Vegetation
            Mapping Program Rock Creek Park
          Edition: Version 1
          Geospatial_Data_Presentation_Form: Report
          Series_Information:
            Series_Name: Unknown
            Issue_Identification: Unknown
          Publication_Information:
            Publication_Place: Unknown
            Publisher: Ed Reyes
          Other_Citation_Details: Unknown
      Methodology_Identifier:
        Methodology_Keyword_Thesaurus: None
        Methodology_Keyword: TNC
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Air Survey Corporation Sterling, Virginia
          Publication_Date: 19961029
          Publication_Time: Unknown
          Title: Rock Creek Park
          Edition: Version 1.0
          Geospatial_Data_Presentation_Form: image
          Series_Information:
            Series_Name: 1.0
            Issue_Identification: Unknown
          Publication_Information:
            Publication_Place: Sterling Virginia
            Publisher: Air Survey Corporation
          Other_Citation_Details: The aerial photography is CIR 1:6,000 scale.
          Online_Linkage: http://biology.usgs.gov/npsveg/rocr/photos.pdf
      Source_Scale_Denominator: 12000
      Type_of_Source_Media: CIR Aerial Photography
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 19961029
            Time_of_Day: Unknown
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: ASC
      Source_Contribution: None
    Process_Step:
      Process_Description: See Methodology Description above.
      Source_Used_Citation_Abbreviation: ASC
      Process_Date: 19981001
    Process_Step:
      Process_Description:
        The following continues to describe the tasks performed and
        methodologies used by Aerial Information Systems (AIS)
        during the vegetation data compilation for Rock Creek Park.
        DATA CONVERSION: Typically, the first step of the data
        conversion process is the Manual rectification was conducted
        by attaching a new mylar overlay to the base. The photo
        signature delineation units were transferred to the overlay
        through local registration of the photos with the attached
        photo signature delineation overlay. Existing orthophotography
        for Rock Creek Park was created from photos flown in leaf off
        conditions. Although this allowed greater ease for viewing
        features such as roads in forest canopies, it proved difficult to
        register vegetation from leaf on photography to the early spring
        leaf off orthophotography. A small area of the photo was
        registered to the base at a time. By matching photo image to
        orthophoto image, the delineations were transferred to the base
        overlay. Because the parallax of the photo differs from that of
        the orthophoto base, care was required in transfer. Inconsistent
        stretching or shortening of the images was common from the photo
        to the base. When one area was completed, the photo was shifted
        to register to another small area. The process continued until the
        manual rectification and transfer of polygons was complete. The
        codes for PI signature type, height, density, and community type
        were transferred from the corresponding photo overlays.
      Process_Date: 19980601
    Process_Step:
      Process_Description:
        FIELD RECONNAISSANCE EFFORT: A three day
        photointerpretation field reconnaissance effort was  conducted
        in May 1997 (see section III) to tie the photo signatures delineated
        on the aerial photographs with units evident on the ground.
        The field crew consisted of Eden Crane and Sue Salmons (park
        biologists), Virginia Crouch (Heritage biologist), Julie Lundgen (TNC
        ecologist) and John Menke (AIS photointerpreter).

        Prior to the field reconnaissance effort, several in-house preparations
        were performed in order to facilitate a more organized trip. Each photo
        was prepared with a separate field overlay. Locational features (roads,
        buildings, etc) were drafted onto the overlays. Each photo was reviewed
        and field transect sites were chosen representing different signatures
        types, geographic variables (% slope, aspect, shape of the slope, elevation),
        and other abiotic variables noted on the photography. These sites were
        drafted onto the field overlays with notations to each site as needed.
        Multiple siteswere chosen to provide alternatives if one or more sites
        proved inaccessible.

        The field crew conducted on-site investigations over the three-day period.
        During the field visit, the photointerpreter worked with the field biologists to
        identify the plant species, preliminary vegetation communities, and their
        associated photo signatures throughout the park. Field site numbers were
        annotated directly onto the photo field overlay, thereby correlating the field
        site to a specific location and photo signature. A field notebook was used to
        record pertinent information (canopy dominance, understory species present,
        abiotic features, disturbance history) for each site visited. Several ground
        photos were taken at selected locations that were later tied back to the aerial
        photographs and the field sites. Sites not previously identified on the photos
        were also visited. These sites included areas between initially selected sites,
        areas of noteworthy or unusual significance as determined by park personnel,
        and areas the photointerpreter deemed important in transit from site to site.
      Process_Date: 19981001
Spatial_Data_Organization_Information:
  Indirect_Spatial_Reference:
    The ecology field sites were digitized to indicate
    the area for which a TNC ecologist conducted an
    ecological field sampling.
  Direct_Spatial_Reference_Method: Point
  Point_and_Vector_Object_Information:
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: Point
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:
            Longitude_of_Central_Meridian: -180
            Latitude_of_Projection_Origin: -90
            False_Easting: 50000
            False_Northing: 0
            Scale_Factor_at_Central_Meridian: 0.9996
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: coordinate pair
        Coordinate_Representation:
          Abscissa_Resolution: 1
          Ordinate_Resolution: 1
        Planar_Distance_Units: Meters
    Geodetic_Model:
      Horizontal_Datum_Name: North American Datum of 1983
      Ellipsoid_Name: Geodedic Reference System 80
      Semi-major_Axis: 6378137
      Denominator_of_Flattening_Ratio: 298.257
  Vertical_Coordinate_System_Definition:
    Altitude_System_Definition:
      Altitude_Datum_Name: North American Vertical Datum of 1988
      Altitude_Resolution: 1
      Altitude_Distance_Units: Feet
      Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
  Overview_Description:
    Entity_and_Attribute_Overview:
      The system is organized hierarchically to support
      conservation and resource stewardship applications
      across multiple scales.  The upper levels of the
      hierarchicy are based on the physical form or
      structure of the vegetation (physiognomy) and have
      been refined from the international standards
      developed by the United Nations Educational,
      Scientific, and Cultural Organization (UNESCO).
      The two most detailed levels of the hierearchy are
      based on the species composition of the existing
      vegetation (floristics) and reflect the
      phyto-sociological standards that were originally
      developed by European ecologists.  The vegetation
      classification is continually advanced through the
      collection and analysis of new field data and will
      be greatly strengthened during the course of the
      USGS-NPS mapping efforts.  National Park
      Service/Biological Resources Division Vegetation
      Inventory and Mapping Program for Rock Creek
      Park,Washington DC, Final Community Association
      Classification, March, 1998.  DATA DICTIONARY -
      ROCK CREEK PARK  Data Format Outline:  Variable
      Coverage related variables: Area818F Perimeter818F
      Veg#45B Veg-id45B Defined variables: Seqno33I
      Mod44C PI 22I Height11I Density11I TNC 33C
      Landuse44C Pattern11I  Data Dictionary:  MOD
      (Defines the modules corresponding to the DOQQ
      file name. 6 total - roughly corresponding to the
      six individual plots)  WE4 WW1 WW2 WW3 WW3E WW4
      Defines Photointerpretation Signature Type (PI)
      Non Forest Types:  01=Code not Used 02=Managed
      grass/lawns 03=Meadow grasslands  (native
      component) 04=Shrub areas  (forest edges)
      05=Canopy openings  (shrubs, vines, some trees)
      06=Water 99=Urban/disturbed  (see detailed Urban
      codes in Land Use field)  Forest Types:
      10=Floodplain areas 11=Ash swamps 12=Oak/beech
      13=Mesic oak 14=Dry mesic oak 15=Tulip/oak
      16=Tulip 17=Pine/oak 18=Tulip/oak/beech 19=Tulip
      floodplain 20=Exotic/planted trees with managed
      grass/lawn  Defines Height (HEIGHT)  1=< 0.5
      meters 2=0.5-2 meters 3=2-5 meters 4=5-15 meters
      5=15-35 meters 6=35-50 meters 7=> 50 meters 9=Not
      Applicable  Defines Density (DENSITY)
      1=Closed/Continuous>60% 2=Discontinuous40%-60%
      3=Dispersed25%-40% 4=Sparse10%-25% 5=Rare2%-10%
      9=Not Applicable  Defines Mapping Classification
      Communities and Variants (TNC) 01=Forest canopy
      gap 02=Loblolly pine - mixed oak forest Pinus
      taeda - Quercus (alba, falcata, stellata) Forest
      [Provisional] 03=Virginia pine - oak forest Pinus
      virginiana - Quercus (alba, stellata, falcata,
      velutina) Forest Association 04=Sycamore - green
      ash forest (floodplain forest) Platanus
      occidentalis - Fraxinus pennsylvanica Forest
      05=Tulip poplar forest Liriodendron tulipifera
      Forest [Provisional] 06=Chestnut oak forest
      Quercus (prinus, velutina) / Gaylussacia baccata
      Forest 07=code not used 08=MIXED OAK/BEECH VARIANT
      of Beech - white oak / mayapple forest Fagus
      grandifolia - Quercus alba / Podophyllum peltatum
      Forest 09=code not used 10=Beech - white oak /
      mayapple forest (CLASSIC TYPE) Fagus grandifolia -
      Quercus alba / Podophyllum peltatum Forest
      10B=Beech - white oak / mayapple forest (CLASSIC
      TYPE) beech/tulip component Fagus grandifolia -
      Quercus alba / Podophyllum peltatum Forest
      11=Shrub areas 12=Managed grass/lawns 13=Meadow
      grasslands 14=Managed grass/lawns with trees
      98=Water  Defines Land Use (LANDUSE)  1000=Urban
      1900=Residential 1910=Commercial and Services
      1911=Nature center and planetarium 1912=Horse
      center; maintenance yard 1913=Park headquarters
      1914=Park police 1915=Amphitheater 1916=Mixed park
      facilities 1917=Center for Urban Ecology 1918=Fort
      Stevens 1919=Fort Reno Park 1920=Industrial
      1930=Transportation, Communications, and Utilities
      1931=Road 1932=Parking Area 1940=Industrial and
      Commercial Complexes 1950=Mixed Urban or Built-up
      Land 1960=Other Urban or Built-up Land
      1961=Community gardens 1962=Golf course 1963=Ball
      fields 1964=Tennis stadium and/or courts
      1965=Tennis courts and gardens 1966=Swim center
      1967=Area Under Construction 1968=Cemetery
      2000=Agriculture 3000=Natural Vegetation
      8000=Water  Defines Pattern (PATTERN) 1 = Evenly
      Dispersed 2 = Clumped / Bunched 3 = Gradational /
      Transitional 4 = Alternating 9 = Not Applicable
      FILE SPECIFICATIONS: Coordinate system: NAD83 -
      Maryland State Plane (zone 4126)
    Entity_and_Attribute_Detail_Citation:
      Grossman, D. Et al. 1994.  National Park Service
      Vegetation Mapping Project, Standardized National
      Vegetation Classificatrion System 209 pp.

Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: USGS-NPS Vegetation Mapping Program Coordinator
        Contact_Organization: U.S. Geological Survey, Center for Biological Informatics
      Contact_Address:
        Address_Type: mailing and physical address
        Address:
          U.S. Geological Survey, Center for Biological
          Informatics, MS 302, Room 8000, Building 810,
          Denver Federal Center
        City: Denver
        State_or_Province: Colorado
        Postal_Code: 80225
      Contact_Voice_Telephone: (303) 202-4220
      Contact_Facsimile_Telephone: 303-202-4229
      Contact_Facsimile_Telephone: 303-202-4219 (org)
      Contact_Electronic_Mail_Address: gs-b-npsveg@usgs.gov
  Resource_Description: ROCR Veg Map
  Distribution_Liability:
    The U.S. Geological Survey and the National Park Service shall not be held liable for improper or incorrect use of the data described and/or contained herein.  These data and related graphics (if available) are not legal documents and are not intended to be used as such.

    The information contained in these data is dynamic and may change over time.  The data are not better than the original sources from which they were derived.  It is the responsibility of the data user to use the data appropriately and consistent within the limitations of geospatial data in general and these data in particular.  Any related graphics (if available) are intended to aid the data user in acquiring relevant data; it is not approriate to use the related graphics as data.

    The U.S. Geological Survey and the National Park Service gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data.  It is strongly recommended that these data are directly acquired from an U.S. Geological Survey and National Park Service servers and not indirectly through other sources which may have changed the data in some way.  Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the utility of the data on another system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. Mention of trade names or commercial products in this metadata report does not constitute endorsement or recommendation for use by the U. S. Department of the Interior, U. S. Geological Survey and National Park Service.
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: HTML
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: http://biology.usgs.gov/npsveg/rocr/index.html
    Fees: None
Metadata_Reference_Information:
  Metadata_Date: 200102
  Metadata_Review_Date: 20080507
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: USGS-NPS Vegetation Mapping Program Coordinator
      Contact_Address:
        Address_Type: mailing and physical address
        Address:
          U.S. Geological Survey, Center for Biological Informatics, MS 302,
          Room 8000, Building 810, Denver Federal Center
        City: Denver
        State_or_Province: Colorado
        Postal_Code: 80225
        Country: USA
      Contact_Voice_Telephone: (303) 202-4220
      Contact_Facsimile_Telephone: (303) 202-4219
      Contact_Electronic_Mail_Address: gs-b-npsveg@usgs.gov
  Metadata_Standard_Name: FGDC-STD-001.1-1999 Content Standard for Digital Geospatial Metadata, 1998 Part 1: Biological Data Profile, 1999
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Extensions:
    Online_Linkage: http://metadata.nbii.gov/portal/community/Communities/Toolkit/Metadata/FGDC_Metadata/
    Profile_Name: Biological Data Profile FGDC-STD-001.1-1999