NC Office of State Planning, NC Geodetic Survey
20030820
HC_Geodetic_Control_Points
vector digital data
Raleigh, North Carolina
NC Office of State Planning, NC Geodetic Survey
NCCGIA distributes this dataset
withheld
HC_Geodetic_Control_Points
The North Carolina Geodetic
Survey in cooperation with the NC Center for Geographic Information
and Analysis, developed the GIS data set, Geodetic Control Points,
to identify points in North Carolina depicting horizontal and
vertical survey control locations as fixed by the NC Geodetic Survey.
This data was created to assist governmental agencies
and others in making resource management decisions through use
of a Geographic Information System (GIS).
>system filename: gdc file size = 3.2 mb
>
>Revisions and updates to this layer include:
>7.) filename: gdc0803 Layer updated August, 2003. 29939 points.
>
>6.) filename: gdc1299 Layer updated December, 1999. Geodetic control
>points added and attribute z-value added. 28549 points. Data is in
>83, state plane, meters.
>
>5.) filename: gdc1298 The December 1998 update to this layer consisted
>of projecting the data from NAD83 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.
>
>4.) filename: gdc398 March 19, 1998 - Geodetic control points
>added. Number of points is now 28061 and data is in 83, stateplane,
>feet.
>
>3.) filename: gdc594 The May 1994 version has 26353 points and
>is in 83, stateplane, feet. (previously called nc.gdc594)
>
>2.) filename: gdc294 The February 18, 1994 file was in
>83, stateplane, feet. This file was reviewed and no changes
>were made from the 10/93 version. (previously called nc.gdc294)
>
>1.) filename: gdc1093 The October 1993 version was the orginal
>release. File is in 83, state plane, feet. (previously
>called nc.gdc1093)
en
19931016
20030820
REQUIRED: The year (and optionally month, or month and day) for which the data set corresponds to the ground.
Data creation and revision dates
As needed
-82.653658
-82.259022
35.501903
35.159967
912676.570080
1026249.489259
533077.645980
653646.013766
None
Geodetic control
Horizontal control
Vertical control
Geodetic network
ISO 19115 Topic Category
location
William S. Powell, The North Carolina
GAZETTEER, A Dictionary of Tar Heel Places,(Chapel Hill: University of
North Carolina Press, August 1984.
North Carolina
The NC Geodetic Survey is notified monthly by CGIA
of the person/groups requesting this data.
Acknowledgement of products derived form this data set
should cite the following: The source of the Geodetic Control Points
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.
Bart Alligood
physical
512 N. Salisbury Street
Raleigh
North Carolina
27604-1148
U.S.A.
(919) 733-3836
8:00am to 5:00pm
Preferred contact is by mail or telephone
ESRI ArcCatalog 9.3.1.4000
File Geodatabase Feature Class
Point attributes were supplied by the North Carolina Geodetic Survey.
Using ESRI's ARC/INFO GIS software, the dataset was built for
points using the "build" command. Topology has not been edited since the
last build or clean.
Points depicting horizontal and vertical survey control locations as
fixed by the NC Geodetic Survey. Horizontal control markers based on
North American Datum 1983 geodetic network and used as a base
for mapping. Vertical control markers based on National Geodetic Vertical
Datum 1929 geodetic network.
Points meet either the First-Order positional accuracy (not to exceed
1 part in 100,000) or the Second-Order, Class 1 positional accuracy
(not to exceed 1 part in 50,000) for the National network of
horizontal control.
NC Office of State Planning, NC Geodetic Survey
20030820
Geodetic Control Points
Map
Raleigh, North Carolina
NC Office of State Planning, NC Geodetic Survey
Data is updated as needed.
Paper
19931026
20030820
Original release date and revision
date, respectively
None
Geodetic control points
Geodetic control locations were obtained through tower
triangulation surveys, traverse surveys and Global Positioning
System (GPS) Surveys.
19931026
Bart Alligood
NC OSPL, Geodetic Survey
physical
512 N. Salisbury Street
Raleigh
North Carolina
27604-1148
U.S.A.
(919) 733-3836
8:00am to 5:00pm
Phone
The data for all 100 counties was sent to NC CGIA via e-mail.
This included the geodetic monument names with x/y coordinates
and z values in stateplane meters. The 100 textfiles were joined
together, then read into an arc/info INFO file.
An ARC/INFO points coverage was generated in arcview using
add event theme.
20030820
David Giordano
NCCGIA
Database Administrator
Physical
333 E. Six Forks Rd.
Raleigh
North Carolina
27609
U.S.A.
Mailing
20322 Mail Service Center
Raleigh
North Carolina
27699
U.S.A.
919-754-6580
919-715-8551
dataq@its.nc.gov
8am to 5pm
Phone and electronic mail preferred
Metadata imported.
withheld
20110624
12015600
Vector
Entity point
303
Simple
Point
FALSE
303
TRUE
FALSE
coordinate pair
0.000328
0.000328
survey feet
Lambert Conformal Conic
34.333333
36.166667
-79.000000
33.750000
2000000.002617
0.000000
North American Datum of 1983
Geodetic Reference System 80
6378137.000000
298.257222
GCS_North_American_1983
NAD_1983_StatePlane_North_Carolina_FIPS_3200_Feet
National Geodetic Vertical Datum of 1929
0.000100
Meters
Explicit elevation coordinate included with horizontal coordinates
HC_Geodetic_Control_Points
Horizontal and vertical survey control locations
as fixed by the NC Geodetic Survey
NC OSPL, Geodetic Survey
Feature Class
303
OBJECTID_1
OBJECTID_1
OID
4
0
0
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
OBJECTID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
OBJECTID
Double
8
0
0
SHAPE
Feature geometry.
ESRI
Coordinates defining the features.
Shape
Geometry
0
0
0
AREA
AREA
Double
8
0
0
PERIMETER
Total perimeter in coverage units
Software computed
0.000
0.000
meters
0.001
None planned
PERIMETER
Double
8
0
0
GDC_
GDC_
Double
8
0
0
GDC_ID
GDC_ID
Double
8
0
0
X_COORD
X coordinate
NC OSPL, Geodetic Survey
121862.148
946743.312
Meters
0.001
None planned
X_COORD
Double
8
0
0
Z_VALUE
Z value
NC OSPL, Geodetic Survey
Geodetic name varies in combination of numbers and letters
(N/A indicates values that were missing from OSPL database)
None planned
Z_VALUE
String
7
0
0
Y_COORD
Y coordinate
NC OSPL, Geodetic Survey
7991.229
327185.613
Meters
0.001
None planned
Y_COORD
Double
8
0
0
GEOD_NAME
Name of geodetic point
NC Geodetic Survey
values differ
GEOD_NAME
String
40
0
0
POLYGONID
POLYGONID
Double
8
0
0
SCALE
SCALE
Double
8
0
0
ANGLE
ANGLE
Double
8
0
0
Description
Description
String
50
0
0
NC Center for Geographic Information and Analysis
Database Administration
Physical
333 E. Six Forks Rd.
Raleigh
North Carolina
27609
U.S.A.
Mailing
20322 Mail Service Center
Raleigh
North Carolina
27699
U.S.A.
919-754-6580
919-715-8551
dataq@its.nc.gov
8:30AM - 5:30PM
Phone and electronic mail preferred
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.
ESRI shapefile (*.shp)
withheld
None. Download from www.nconemap.com is free of charge.
Data can be customized on a cost-recovery basis. Contact dataq@its.nc.gov or 919-754-6580 for more information.
This data is provided as an 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.
Downloadable Data
20110624
North Carolina Center for Geographic Information and Analysis
David Giordano
Database Administration
Physical
333 E. Six Forks Rd.
Raleigh
North Carolina
27609
U.S.A.
Mailing
20322 Mail Service Center
Raleigh
North Carolina
27699
U.S.A.
919-754-6580
919-715-8551
dataq@its.nc.gov
8am to 5pm
Phone and electronic mail preferred
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time
None
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.
en
http://www.esri.com/metadata/esriprof80.html
ESRI Metadata Profile
20211108
11072000
FALSE
20110624
14553500
20110624
14553500
1.0
ESRI ArcCatalog 9.3.1.4000
HC_Geodetic_Control_Points
912676.57008
1026249.489259
653646.013766
533077.64598
1
-82.653658
-82.259022
35.501903
35.159967
1
ISO 19115 Geographic Information - Metadata
DIS_ESRI1.0
dataset
002
withheld
Local Area Network
File Geodatabase Feature Class
NAD_1983_StatePlane_North_Carolina_FIPS_3200_Feet
303
20110624