system filename: cb100sl approx. filesize = 1.48 mb Revisions and updates to this layer include: 4.) filename: cb100sl0306 The March 2006 update to this layer consisted of correcting the boundaries for Mecklenburg and Iredell counties according to Law 2001-429, Senate Bill 35. 3.) filename: cb100sl1203 The December 2003 update to this layer consisted of correcting the boundaries for Carteret and Jones counties according to DOT county boundary updates. 2.) filename: cb100sl1298 The December 1998 update to this layer consisted of projecting the data from NAD27 datum, State Plane projection, units of measure feet TO: NAD83 DATUM, State Plane PROJECTION, UNITS OF MEASURE METERS. This was done to comply with the NC Geographic Information Coordinating Council's "Statement of Direction for North Carolina Corporate Geographic Database Horizontal Reference, Datum and Unit of Measure". This reprojecting was done in various ways depending on the data type and content. Vector data was projected using the 'project' command in ESRI's Arc software and topology was cleaned and built based on coverage needs. Raster data was projected using ESRI's Grid module and various steps as applicable. 1.) filename: cb100sl298 The February 1998 version was the first archived version of this data. (this file was previously named nc100.cb.sl)A DOT-based county boundaries coverage at approximately 1:126,720 also exists in the Corporate Database. This DOT coverage should be used in conjunction with other data layers that were developed (i.e., clipped) using this coverage. Some of these coverages are: General Geology (1:250,000-scale) General Soils (1:250,000-scale) 1980 Census Boundaries/Population Federal Land Ownership
NC Center for Geographic Information & Analysis, 20060330, onemap_prod.SDEADMIN.cb100sl_poly: NC Center for Geographic Information & Analysis, Raleigh,North Carolina.Online Links:
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 0.001953
Ordinates (y-coordinates) are specified to the nearest 0.001953
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.
| Range of values | |
|---|---|
| Minimum: | 50.175 |
| Maximum: | 2,201,123.000 |
| Units: | meters |
| Resolution: | 0.001 |
| Formal codeset | |
|---|---|
| Codeset Name: | Federal Information Processing Standard Codes |
| Codeset Source: | U.S. Dept. of the Interior, U.S. Geological Survey |
Sequential unique whole numbers that are automatically generated.
Coordinates defining the features.
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 787 |
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 787 |
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 351 |
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 351 |
| Range of values | |
|---|---|
| Minimum: | 0.630 |
| Maximum: | 580,528.000 |
| Units: | meters |
| Resolution: | .001 |
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 1005 |
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 1005 |
| Value | Definition |
|---|---|
| CNTY | County boundary |
| NONE | No particular type (closure line) |
| OCEAN | Ocean Boundary |
| SHORE | Shoreline boundary |
| STATE | State boundary |
CB100.PAT Polygon Attribute Table COL ITEM NAME WDTH OPUT TYP DEC DESCRIPTION 1 AREA 4 19 F 3 Area in coverage units 5 PERIMETER 4 12 F 3 Perimeter in coverage units 9 CB100SL# 4 5 B - Coverage Id 13 CB100SL-ID 4 5 B - User assigned Id 17 FIPS 4 7 B - County FIPS code 21 CO-NAME 15 15 C - County name 36 CO# 4 7 B - County FIPS code 40 CO-ABBR 4 4 C - 4 letter county abbreviation 44 SL-ID 4 5 B - Shoreline type NC100.CB.AAT Arc Attribute Table COL ITEM NAME WIDTH OUTPUT TYPE DEC DESCRIPTION 1 FNODE# 4 5 B - From-node id of linear feature 5 TNODE# 4 5 B - To-node id of linear feature 9 LPOLY# 4 5 B - Left-side polygon id of linear feature 13 RPOLY# 4 5 B - Right-side polygon id of linear feature 17 LENGTH 4 12 F 3 Length of linear feature in meters 21 CB100SL# 4 5 B - Internal id number 25 CB100SL-ID 4 5 B - Internal id number 29 TYPE 4 5 B - Arc type
NCCGIA Director (Acting), Tim Johnson Database Administration, Zsolt Nagy Database Management (Acting), David Giordano North Carolina Center for Geographic Information and Analysis Governor's Office Office of State Planning 301 N. Wilmington Street Suite 700 Raleigh, NC 27601-2825
(919) 733-2090 (voice)
(919)715-0725 (FAX)
dataq@nc.mail.net
This data was created to assist governmental agencies and others in making resource management decisions through use of a Geographic Information System (GIS).
Survey, US Geological , 1984-1986, 30 x 60 Series quadrangles: US Geological Survey, Reston, Virginia.
Person who carried out this activity:
(919) 733-2090 (voice)
(919)715-0725 (FAX)
dataq@nc.mail.net
Person who carried out this activity:
(919) 733-2090 (voice)
(919)715-0725 (FAX)
dataq@nc.mail.net
Person who carried out this activity:
252-728-8490 (voice)
252-222-6124 (FAX)
barryb@carteretcountygov.org
Person who carried out this activity:
704-336-8199 (voice)
704-336-7333 (FAX)
kempmk@co.mecklenburg.nc.us
Data sources used in this process:
Data sources used in this process:
NC CGIA digitized the county boundaries from USGS Digital Line Graphs on mylar basemaps. The polygons were attributed with county name, county FIPS number, county abbreviation, and total acres per county. Arcs were assigned an arc type and name. The digital files were plotted and overlayed to the originals and linework and label corrections were made.
County boundaries were digitized from 30 x 60 Series USGS mylar basemaps, which meet National Map Accuracy Standards. The digital files were plotted and overlayed to the originals and needed line corrections were made to within one linewidth.
This data layer represents the jurisdictional boundaries of all counties in North Carolina, as mapped by the US Geological Survey-Digital Line Graph Program, 1:100,000-scale, with shoreline included.
Using ESRI's ARC/INFO GIS software, the data set was built for arc and polygon topology using the "build" command. Topology has not been edited since the last build or clean.
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints:
- Acknowledgement of products derived form this data set should cite the following: The source of the Boundaries - County with Shoreline (1:100,000) data is the North Carolina Corporate Geographic Database. Earlier versions of this data set may exist. The user must be sure to use the appropriate data set for the time period of interest. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, CGIA cannot assume liability for any damages or misrepresentation caused by any inaccuracies in the data or as a result of changes to the data caused by system transfers.
(919) 733-2090 (voice)
(919) 715-0725 (FAX)
dataq@nc.mail.net
Boundaries - County with Shoreline (1:100,000)
NCCGIA is charged with the development and maintenance of the State's corporate geographic database and, in cooperation with other mapping organizations, is committed to offering its users 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 corporate database may be reflected in the data supplied. The client must be aware of data 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 data. The use of trade names or commercial products does not constitute their endorsement by the NCCGIA or North Carolina State Government.
FOR DIGITAL OR NON-DIGITAL DATA, Contact NC CGIA, Data Distribution to order data, Phone 919.733.2090 ... Email dataq@nc.mail.net ... Web Page order form <http://www.cgia.state.nc.us/cgdb/index.html>
For current FORMAT/MEDIA INFORMATION, use a web browser: <http://www.cgia.state.nc.us/cost.html> or phone NC CGIA Data Distribution 919.733.2090
Data creation and large data analysis jobs contact Database Administration P:(919)733-2090. All data is available through standard ordering procedures on a cost recovery basis.
All formats supplied are created using ARC/INFO GIS software on Unix workstations. Other formats are available. Format compatibility is the user's responsibility. For current FORMAT/MEDIA INFORMATION, use a web browser: <http://www.cgia.state.nc.us/cost.html>
(919) 733-2090 (voice)
(919) 715-0725 (FAX)
dataq@nc.mail.net