Ten_FootTopo (FeatureServer)

View In: Map Viewer

Service Description: 1/29/2019 To create a 10 foot contour lines from NC One Map 2 foot Contour Lines. Clipped 6/13/2025 and published 6/16/2025

Service ItemId: 829ad2d64ab24f37bb1f5833f84e78b6

Has Versioned Data: false

Max Record Count: 2000

Supported query Formats: JSON

Supports applyEdits with GlobalIds: True

Supports Shared Templates: True

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Layers:

Ten_FootTopo (0)

Description:

After download 1/29/2019 this definition query was used MOD(Z_Feet, 10) = 10.

Below is the Metadata from NC One Map.

This XML file does not appear to have any style information associated with it. The document tree is shown below.

NC Dept. of Information Technology, Government Data Analytics Center, Center for Geographic Information and Analysis, NCDOT GIS Branch, NC Floodplain Mapping Program

</origin>

<title>Statewide Elevation Contours - 2 Foot Interval</title>

<geoform>vector digital data</geoform>

<pubplace>Raleigh, North Carolina</pubplace>

</pubinfo>

<othercit>NCCGIA distributes this dataset</othercit>

<onlink>http://www.nconemap.gov</onlink>

</citeinfo>

</citation>

Statewide elevation contours for all 100 NC counties. Contours are based on 20 foot DEM grid cells generated from LIDAR.

</abstract>

Use is intended for general purpose display of contour data for all counties in North Carolina and to assist governmental agencies and others in making resource management decisions through use of a Geographic Information System (GIS).

</purpose>

Consumers should not expect the contours to be exact and may contain small errors over open water or sound areas. The vertical datum used is NAVD 88. The accuracy of the LIDAR is about 25cm (10 inches), however, using two foot contours may be pushing data beyond the intended accuracy.

</supplinf>

</descript>

</sngdate>

</timeinfo>

<current>publication date</current>

</timeperd>

<progress>Complete</progress>

<update>As Needed</update>

</status>

<spdom>

</bounding>

</spdom>

<theme>

<themekt>ISO 19115 Topic Category</themekt>

<themekey>elevation</themekey>

</theme>

<theme>

<themekey>contour</themekey>

<themekey>contours</themekey>

<themekey>LiDAR</themekey>

<themekey>elevation</themekey>

<themekey>contour line</themekey>

<themekey>contour lines</themekey>

</theme>

<place>

William S. Powell, The North Carolina GAZETTEER, A Dictionary of Tar Heel Places, (Chapel Hill: University of North Carolina Press), August 1984.

</placekt>

<placekey>North Carolina</placekey>

</place>

</keywords>

The source of these statewide elevation contours is NC OneMap. Earlier versions of this dataset may exist. The user must be sure to use the appropriate dataset for the time period of interest. While efforts have been made to ensure that these data are accurate and reliable, CGIA or its partners cannot assume liability for any damages or misrepresentation caused by any inaccuracies in the data or as result of changes to the data caused by system transfers. Neither CGIA nor its partners shall not be held liable for any errors in this data. This includes errors of omission, errors concerning the content of the data, and positional accuracy of the data. This data cannot be construed to be a legal document. Primary sources from which this data was compiled must be consulted for verification of information contained in this data.

</useconst>

<cntper>David Giordano</cntper>

<cntorg>NC Center for Geographic Information and Analysis</cntorg>

</cntperp>

<cntpos>GIS Database Administrator</cntpos>

<addrtype>physical address</addrtype>

<address>3700 Wake Forest Rd.</address>

<city>Raleigh</city>

<state>North Carolina</state>

</cntaddr>

<cntinst>Preferred contact is by email</cntinst>

</cntinfo>

</ptcontac>

LIDAR data is maintained by the Flood Mapping Program. Elevation products generated by NCDOT-GIS Unit. Data made available by the NC Center for Geographic Information and Analysis, through NC OneMap.

</datacred>

Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.2.1.1332

</native>

</idinfo>

Contours are complete statewide. Line generalization occurred to create smoother contour lines.

</complete>

Consumers should not expect the contours to be exact. The vertical datum used is NAVD 88, but the accuracy of the LIDAR is about 25cm or about 10 inches, however, using two foot contours may be pushing data beyond the intended accuracy.

</vertaccr>

</vertacc>

</posacc>

To build contours, Integer grids were used to allow for faster processing. The integer grid is rounded to the nearest 1/10th of a foot. A filter is run to reduce extreme elevation changes. A resample is done to create smoother contour lines. The input grid is also buffered by 1 mile to produce lines that are edgematched and avoid removing valid short lines. In mountainous areas the contours must be done with an 20 foot interval to avoid memory errors. Merge all the contours together to create a complete file.

</procdesc>

<cntper>Bill Miller</cntper>

<cntorg>NCDOT</cntorg>

</cntperp>

<cntpos>Programmer</cntpos>

<addrtype>Mailing</addrtype>

<address>1521 Mail Service Center</address>

<city>Raleigh</city>

<state>North Carolina</state>

</cntaddr>

<cntemail>bmiller@dot.state.nc.us</cntemail>

</cntinfo>

</proccont>

</procstep>

</lineage>

</dataqual>

<direct>Vector</direct>

<sdtstype>String</sdtstype>

</sdtsterm>

</ptvctinf>

</spdoinfo>

<spref>

<mapprojn>Lambert Conformal Conic</mapprojn>

</lambertc>

</mapproj>

<plance>coordinate pair</plance>

</coordrep>

<plandu>survey feet</plandu>

</planci>

</planar>

<horizdn>North American Datum of 1983</horizdn>

<ellips>Geodetic Reference System 80</ellips>

</geodetic>

</horizsys>

</spref>

<enttypl>Contour lines</enttypl>

Contour lines for all of NC. Contour interval is 2 feet.

</enttypd>

</enttyp>

<attr>

<attrdef>Identifies elevation in feet.</attrdef>

<udom>Elevations differ by contour line.</udom>

</attrdomv>

</attr>

<attr>

Federal Information Processing Standard county code.

</attrdef>

<udom>Codes differ by county.</udom>

</attrdomv>

</attr>

<attr>

<attrlabl>LocGroup</attrlabl>

<attrdef>Block identifier used during processing.</attrdef>

<udom>Codes differ by contour line.</udom>

</attrdomv>

</attr>

<attr>

<attrlabl>LocXY</attrlabl>

<attrdef>Block identifier used during processing.</attrdef>

<udom>Codes differ by contour line.</udom>

</attrdomv>

</attr>

<attr>

<attrlabl>BaseContou</attrlabl>

<attrdef>Base contour line in feet.</attrdef>

<edom>

The 2 foot base contour. To display 2 foot contour interval BaseContou values 4, 20, and 100 must also be displayed.

</edomvd>

</edom>

</attrdomv>

<edom>

The 4 foot base contour. To display 4 foot contour interval BaseContou equal to 20 and 100 must also be displayed.

</edomvd>

</edom>

</attrdomv>

<edom>

The 20 foot contour. To display 20 foot contour interval BaseContou equal to 100 must also be displayed.

</edomvd>

</edom>

</attrdomv>

<edom>

The 100 foot base contour. Display only this BaseContou value to display 100 foot contour interval.

</edomvd>

</edom>

</attrdomv>

<attrmfrq>As needed</attrmfrq>

</attr>

<attr>

<attrlabl>Shape_Leng</attrlabl>

<attrdef>Length of contour line in feet.</attrdef>

<udom>Lines differ in length.</udom>

</attrdomv>

</attr>

</detailed>

Contour lines for North Carolina. 2 foot contour interval.

</eaover>

</overview>

</eainfo>

</cntorgp>

<addrtype>Physical</addrtype>

<address>3700 Wake Forest Road</address>

<city>Raleigh</city>

<state>North Carolina</state>

</cntaddr>

<addrtype>Mailing</addrtype>

<address>20322 Mail Service Center</address>

<city>Raleigh</city>

<state>North Carolina</state>

</cntaddr>

<cntemail>dataq@its.nc.gov</cntemail>

<cntinst>Phone and electronic mail preferred</cntinst>

</cntinfo>

</distrib>

<resdesc>Downloadable Data</resdesc>

NCCGIA is charged with the development and maintenance of NC OneMap and, in cooperation with other mapping organizations, is committed to offering its users accurate, useful, and current information. Although every effort has been made to ensure the accuracy of information, errors and conditions originating from physical sources used to develop this dataset may be reflected in the data supplied. The user must be aware of possible conditions and bear 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. NCCGIA does not support secondary distribution of this dataset without its current, compliant metadata record. The use of trade names or commercial products does not constitute their endorsement by NCCGIA or North Carolina State Government.

</distliab>

<formname>ESRI shapefile (*.shp)</formname>

</digtinfo>

http://data.nconemap.gov/downloads/vector/elevation/contours

</networkr>

</networka>

</computer>

</onlinopt>

</digtopt>

</digform>

<fees>

None. Download from http://www.nconemap.gov is free of charge.

</fees>

</stdorder>

Data can be customized on a cost-recovery basis. Contact dataq@its.nc.gov or 919-754-6580 for more information.

</custom>

All formats available from http://www.nconemap.gov are in ESRI shapefile. Other formats are available on a cost-recovery basis - contact dataq@its.nc.gov or 919-754-6580 for more information. Format compatibility is the user's responsibility.

</techpreq>

<enddate>Present</enddate>

</rngdates>

</timeinfo>

</availabl>

</distinfo>

<metc>

</cntorgp>

<addrtype>Physical</addrtype>

<address>3700 Wake Forest Rd.</address>

<city>Raleigh</city>

<state>North Carolina</state>

</cntaddr>

<cntemail>nconemap@its.nc.gov</cntemail>

<cntinst>electronic mail preferred</cntinst>

</cntinfo>

</metc>

FGDC Content Standards for Digital Geospatial Metadata

</metstdn>

<mettc>local time</mettc>

<metuc>

This metadata file is to accompany the dataset. NCCGIA does not support secondary distribution of this dataset without its current, compliant metadata record. If the dataset described in this metadata record was received from anyone besides NCCGIA, this metadata and the dataset it describes may contain discrepancies.

</metuc>

</metainfo>

</metadata>

Copyright Text: ASU GIS

Spatial Reference: 102719 (2264)

Initial Extent:

Full Extent:

Units: esriFeet

Child Resources: Info SharedTemplates

Supported Operations: Query ConvertFormat Get Estimates