NDHUB.Contours_Wahpeton_1ft_2012

SDE Feature Class

Tags
North Dakota, ND, GIS Hub, NDGIS, NDGISHub, elevation, contours, environment, Wahpeton

Description

This LiDAR-derived 1-foot contour data is the result of private and government entities working together under the guidance of the City of Wahpeton, ND.

Fugro Earthdata, Inc. acquired LiDAR data with Fugro's proprietary LiDAR sensor for of Wahpeton, ND project area March 30,2012. The project encompassed an area of approximately 7.6 square miles.


Summary

These contours will be used for GIS and planning.

Credits

City of Wahpeton, ND GIS Hub

Use limitations

Not for navigation. In no event shall the creators, custodians, or distributors of this information be liable for any damages arising out of its use (or the inability to use it). The State of North Dakota has compiled this data according to conventional cartographic standards, using what is thought to be the most reliable information available. This data is intended to make results of research available at the earliest possible date, but is not intended to constitute final or formal publication. The State of North Dakota makes every effort to provide virus-free files but does not guarantee uncorrupted files. The State of North Dakota does not guarantee this data to be free from errors, inaccuracies, or viruses, and disclaims any responsibility or liability for interpretations or decisions based on this data.

Scale Range

Metadata 

Topics and Keywords 

Themes or categories of the resource  elevation, environment, imageryBaseMapsEarthCover


*Content type  Downloadable Data

Citation 

*Title NDHUB.Contours_Wahpeton_1ft_2012
Publication date 2012-11-30 00:00:00


Presentation formats* digital map


Citation Contacts 

Responsible party
Individual's name Randy Nelson
Organization's name City of Wahpeton
Contact's position Public Works Director


Contact information
Address
Type
Delivery point 1900 4th St. N
City Wahpeton
Administrative area North Dakota
Postal code 58075
e-mail addressRandyN@wahpeton.com



Responsible party
Individual's name Michael Larson
Organization's name Fugro Earthdata Inc.
Contact's position Project Manager
Contact's role  processor


Contact information
Phone
Voice 605-343-0280

Address
Type
Delivery point 3600 Jet Drive
City Rapid City
Administrative area SD
Postal code 57703
e-mail addressmlarson@fugro.com



Resource Details 

Dataset languages* English (UNITED STATES)
Dataset character set  utf8 - 8 bit UCS Transfer Format


Spatial representation type* vector


Supplemental information
*Processing environment Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.1.4959


Credits
City of Wahpeton, ND GIS Hub

*Name NDHUB.Contours_Wahpeton_1ft_2012

Extents 

Extent
Temporal extent
Beginning date 2012-03-30 00:00:00
Ending date 2012-11-30 00:00:00

Vertical extent
*Minimum value 0.000000
*Maximum value 1012.000000


Extent
Geographic extent
Bounding rectangle
Extent type  Extent used for searching
*West longitude -96.637381
*East longitude -96.589692
*North latitude 46.304947
*South latitude 46.235476
*Extent contains the resource Yes

Extent in the item's coordinate system
*West longitude -96.637381
*East longitude -96.589692
*South latitude 46.235476
*North latitude 46.304947
*Extent contains the resource Yes

Resource Constraints 

Constraints
Limitations of use

Not for navigation. In no event shall the creators, custodians, or distributors of this information be liable for any damages arising out of its use (or the inability to use it). The State of North Dakota has compiled this data according to conventional cartographic standards, using what is thought to be the most reliable information available. This data is intended to make results of research available at the earliest possible date, but is not intended to constitute final or formal publication. The State of North Dakota makes every effort to provide virus-free files but does not guarantee uncorrupted files. The State of North Dakota does not guarantee this data to be free from errors, inaccuracies, or viruses, and disclaims any responsibility or liability for interpretations or decisions based on this data.


Spatial Reference 

ArcGIS coordinate system
*Type Geographic
*Geographic coordinate reference GCS_North_American_1983
*Coordinate reference details
Geographic coordinate system
Well-known identifier 4269
X origin -400
Y origin -400
XY scale 999999999.99999988
Z origin -100000
Z scale 10000
M origin -100000
M scale 10000
XY tolerance 8.98315284119521e-009
Z tolerance 0.001
M tolerance 0.001
High precision true
Left longitude -180
Latest well-known identifier 4269
Well-known text GEOGCS["GCS_North_American_1983", DATUM["D_North_American_1983", SPHEROID["GRS_1980", 6378137.0, 298.257222101]], PRIMEM["Greenwich", 0.0], UNIT["Degree", 0.0174532925199433], AUTHORITY["EPSG", 4269]]

Reference system identifier
*Value 4269
*Codespace EPSG
*Version 8.6.2


Spatial Data Properties 

Vector
*Level of topology for this dataset  geometry only


Geometric objects
Feature class name NDHUB.Contours_Wahpeton_1ft_2012
*Object type  composite
*Object count 9405



ArcGIS Feature Class Properties
Feature class name NDHUB.Contours_Wahpeton_1ft_2012
*Feature type Simple
*Geometry type Polyline
*Has topology FALSE
*Feature count 9405
*Spatial index TRUE
*Linear referencing TRUE



Lineage 

Lineage statement
LiDAR timed reflection data and the IMU SBET flies were processed together using LiDAR processing software. The data set for each flight line was checked for project area coverage, data gaps between overlapping flightlines, and tension/compression areas (areas where data points are more or less dense that the average project specified post spacing). Using an iterative process that involves analyzing raster difference calculations the omega,phi,kappa angle corrections for the LiDAR instrument were determined. Corrections were applied to the LiDAR data set. Extensive comparisons were made of vertical and horizontal positional differences between points common to two or more LiDAR flight lines. An intensity raster for each flight line was generated and verified that intensity was recorded for each LiDAR point. LiDAR ground points were compared to independently surveyed and positioned ground control points at both the airport bore-sight area and the project area. Based on the results of these comparisons, the LiDAR data was vertically biased to the ground. 1) PRE-PROCESSING STAGE LiDAR, GPS and IMU data are processed together using LiDAR processing software. The LiDAR data set for each flight line is checked for project area coverage and LiDAR post spacing is checked to ensure it meets project specifications. The LiDAR collected at the calibration area is used to correct the rotational, atmospheric, and vertical elevation differences that are inherent to LiDAR data. Intensity rasters are generated to verify that intensity was recorded for each LiDAR point. LiDAR data is transformed to the specified project coordinate system. By utilizing the ground survey data collected at the calibration site and project area, the LiDAR data is vertically biased to the ground. Comparisons between the biased LiDAR data and ground survey data within the project area are evaluated and a final RMSE value is generated to ensure the data meets project specifications. The data set is trimmed to the digital project boundary including an additional buffer zone which is typically about 50 meters (buffer zone assures adequate contour generation from the DEM). The resulting data set is referred to as the raw LiDAR data. 2) SURFACING STAGE The raw LIDAR data is processed through a minimum block mean algorithm and points are classified as either bare earth or non-bare earth. User developed "macros" that factor mean terrain angle and height from the ground are used to determine bare earth point classification. The next phase of the surfacing process is a 2D edit procedure that ensures the accuracy of the automated feature classification. Editors use a combination of LiDAR reflection and tin-editing software to assess points. The LiDAR data is filtered, as necessary, using a quadric error metric to remove redundant points. This method leaves points where there is a change in the slope of surfaces (road ditches) and eliminates points from evenly sloped terrain (flat field) where the points do not affect the surface. The resulting data set is referred to as "bare-earth LiDAR" 3) BREAKLINE COLLECTION Breaklines will be collected on hyrdo features in order to properly define the topography. Breaklines were collected utilizing the stereo imgery collected for ortho production. 4) CREATION OF THE DEM The bare-earth LiDAR surface will be triangulated to form an evenly spaced DEM. -No data voids due to system malfunctions or lack of overlap -Dense vegetation data voids minimized by automatic removal process -instrument calibrated for every mission -flight plans are parallel flight lines with at least one cross flight line to assure positional accuracy. -Flight plan considers requirements for point density, terrain, PDOP, and KP index -All data and products associated with contract deliverables will meet or exceed relevant NMAS standards and full comply with FGDC metadata format standard -Standard coordinates, projections and datums available. 

Distribution 

Distributor
Available format
*Name Shapefile


Transfer options
*Transfer size 0.000


Online source
*Location file://\\CIWAHW7PC2\J$\City of Wahpeton Imagery & Lidar Data\Contours\Contours.shp
*Access protocol Local Area Network
*Description  Downloadable Data



Distribution format
*Name SDE Feature Class


Fields 

Details for object NDHUB.Contours_Wahpeton_1ft_2012 
*Type Feature Class
*Row count 9405


Field OBJECTID
 
*Alias OBJECTID
*Data type OID
*Width 4
*Precision 10
*Scale 0
*Field description
Internal feature number.

*Description source
ESRI

*Description of values
Sequential unique whole numbers that are automatically generated.





Field Shape
 
*Alias Shape
*Data type Geometry
*Width 4
*Precision 0
*Scale 0
*Field description
Feature geometry.

*Description source
ESRI

*Description of values
Coordinates defining the features.





Field LINENAME
 
*Alias LINENAME
*Data type String
*Width 20
*Precision 0
*Scale 0




Field ELEVATION
 
*Alias ELEVATION
*Data type Double
*Width 8
*Precision 38
*Scale 8




Field SHAPE.LEN
 
*Alias SHAPE.LEN
*Data type Double
*Width 0
*Precision 0
*Scale 0






Metadata Details 

*Metadata language English (UNITED STATES)
*Metadata character set  utf8 - 8 bit UCS Transfer Format


Scope of the data described by the metadata* dataset
Scope name* dataset


*Last update 2016-02-17


ArcGIS metadata properties
Metadata format ArcGIS 1.0
Standard or profile used to edit metadata FGDC


Created in ArcGIS for the item 2012-10-24 13:52:07
Last modified in ArcGIS for the item 2016-02-17 12:48:51


Automatic updates
Have been performed Yes
Last update 2016-02-17 12:48:51


Metadata Contacts 

Metadata contact
Individual's name Randy Nelson
Organization's name City of Wahpeton
Contact's position Public Works Director
Contact's role  originator


Contact information
Phone
Voice 701-642-6565

Address
Type
Delivery point 1900 4th St. N
City Wahpeton
Administrative area North Dakota
Postal code 58075
e-mail addressRandyN@wahpeton.com