NDHUB.Contours_Statewide_24k

SDE Feature Class

Tags
contours, elevation, 24k, USGS, topo

Description

Please note that these are preliminary contour data downloaded from http://topotools.cr.usgs.gov/contour_data.php.

This contour dataset was generated from the National Elevation Dataset (NED) and the National Hydrography Dataset (NHD) in a fully automated process. The input raster data source was the 1/3 arc-second version of the NED. The NED data were modified by the NHD flow lines, areas, and water bodies to facilitate improved integration between the hypsography and hydrography. These contour datasets were generated from the National Elevation Dataset (NED) and the National Hydrography Dataset (NHD) in a fully automated process. The input raster data source was the 1/3 arc-second version of the NED. The NED data were modified by the NHD flow lines, areas, and water bodies to facilitate improved integration between the hypsography and hydrography. These datasets are not the ones that appear on the U.S. Geological Survey's USTopo GeoPDFs.


Summary

Preliminary contours that match the 10m National Elevation Dataset (NED) and are used in the U.S. Geological Survey's USTopo products.

Credits

U.S. Geological Survey

Use limitations

There is no guarantee or warranty concerning the accuracy of the data. Users should be aware that temporal changes may have occurred since these data were collected generated and that some parts of these data may no longer represent actual surface conditions. Hydro-enforcement and generalization can also significantly alter the spatial characteristics of the contours. Users should not use these data for critical applications without a full awareness of its limitations. Acknowledgement of the originating agencies would be appreciated in products derived from these data. Any user who modifies the data is obligated to describe the types of modifications they perform. User specifically agrees not to misrepresent the data, nor to imply that changes made were approved or endorsed by the USGS. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Please refer to http://www.usgs.gov/privacy.html for the USGS disclaimer.

Scale Range

Metadata 

Topics and Keywords 

*Content type  Downloadable Data

Citation 

*Title NDHUB.Contours_Statewide_24k
Publication date 2012-07-12 00:00:00


Presentation formats* digital map


Citation Contacts 

Responsible party
Individual's name Dean Tyler
Organization's name USGS Center for Earth Resources Observation and Science
Contact's role  resource provider


Contact information
Phone
Voice 605-594-2624

Address
Type
City Sioux Falls
Administrative area SD
Postal code 57198
e-mail addressdtyler@usgs.gov



Resource Details 

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


Spatial representation type* vector


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


Credits
*Name NDHUB.Contours_Statewide_24k

Extents 

Extent
Geographic extent
Bounding rectangle
Extent type  Extent used for searching
*West longitude -104.000000
*East longitude -96.625000
*North latitude 49.000000
*South latitude 46.000000
*Extent contains the resource Yes

Extent in the item's coordinate system
*West longitude -104.000000
*East longitude -96.625000
*South latitude 46.000000
*North latitude 49.000000
*Extent contains the resource Yes

Resource Points of Contact 

Point of contact
Individual's name Dean Tyler
Organization's name USGS Center for Earth Resources Observation and Science


Contact information
Phone
Voice 605-594-2624

Address
Type
City Sioux Falls
Administrative area SD
Postal code 57198
e-mail addressdtyler@usgs.gov



Resource Constraints 

Constraints
Limitations of use

There is no guarantee or warranty concerning the accuracy of the data. Users should be aware that temporal changes may have occurred since these data were collected generated and that some parts of these data may no longer represent actual surface conditions. Hydro-enforcement and generalization can also significantly alter the spatial characteristics of the contours. Users should not use these data for critical applications without a full awareness of its limitations. Acknowledgement of the originating agencies would be appreciated in products derived from these data. Any user who modifies the data is obligated to describe the types of modifications they perform. User specifically agrees not to misrepresent the data, nor to imply that changes made were approved or endorsed by the USGS. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Please refer to http://www.usgs.gov/privacy.html for the USGS disclaimer.


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 0
Z scale 1
M origin 0
M scale 1
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_Statewide_24k
*Object type  composite
*Object count 1144569



ArcGIS Feature Class Properties
Feature class name NDHUB.Contours_Statewide_24k
*Feature type Simple
*Geometry type Polyline
*Has topology FALSE
*Feature count 1144569
*Spatial index TRUE
*Linear referencing FALSE



Lineage 

Lineage statement
The contours were processed in 7.5' x 7.5' units, and are provided in state-based Zip files containing ESRI File Geodatabases.  The coordinate system is Geographic, and the data are referenced to the NAD83 horizontal datum and the NAVD88 vertical datum.  The 1/3 arc-second NED contains resampled data from the 1/9 arc-second layer of NED.  Secondary input datasets include the high resolution flow lines, water bodies, and areas from the National Hydrography Dataset (NHD).  The NHD layers are used to hydro-enforce the DEM prior to contour generation.  The goals of the hydro-enforcement are to prevent contour lines from extending over the surface of water bodies, to align the contour reentrants with the NHD single-line streams, and to cross NHD rivers appropriately.  These contour data are the result of scientific research aimed at developing nationwide contour data that are consistent, repeatable, fully automatic, GIS-ready, and follow cartographic rules.  The complete methodology is contained in Tyler, D.J. and Greenlee, S.K., 2012 (pending review) Creation of Digital Contours that Approach the Characteristics of Cartographic Contours.  The data for the states in this section have not been reviewed to detect and address errors.

Distribution 

Distribution format
*Name SDE Feature Class


Fields 

Details for object NDHUB.Contours_Statewide_24k 
*Type Feature Class
*Row count 1144569


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 ContourElevation
 
*Alias CONTOURELEVATION
*Data type Double
*Width 8
*Precision 38
*Scale 8
Field description
Elevation of each feature, expressed in ContourUnits



Field ContourUnits
 
*Alias CONTOURUNITS
*Data type Integer
*Width 4
*Precision 10
*Scale 0
Field description
1 = Feet 2 = Meters (none in this dataset)



Field FCODE
 
*Alias FCODE
*Data type Integer
*Width 4
*Precision 10
*Scale 0
Field description
10101 - Normal contour
10102 - Normal index contour
10104 - Depression contour
10105 - Depression index contour



Field ContourInterval
 
*Alias CONTOURINTERVAL
*Data type Double
*Width 8
*Precision 38
*Scale 8
Field description
Interval of contours



Field Depression
 
*Alias DEPRESSION
*Data type SmallInteger
*Width 2
*Precision 5
*Scale 0
Field description
Provides more information on the contour classification, intended to help identify additional features as being depressions.
0 = Depression status is indeterminate
1 = Feature is a depression contour
2 = Feature is a normal contour



Field IndexFlag
 
*Alias INDEXFLAG
*Data type SmallInteger
*Width 2
*Precision 5
*Scale 0
Field description
0 = Normal contour.  Independent of depression status 
1 = Index contour.  Independent of depression status
Typically every 5th contour is flagged as an index



Field CELL_ID
 
*Alias CELL_ID
*Data type Integer
*Width 4
*Precision 10
*Scale 0
Field description
An integer representing a unique USGS catalog item.  Replaces MapID



Field ProcessDate
 
*Alias PROCESSDATE
*Data type Date
*Width 36
*Precision 0
*Scale 0
Field description
The date the contours were generated



Field MapID
 
*Alias MAPID
*Data type String
*Width 8
*Precision 0
*Scale 0
Field description
Old USGS catalog number on topographic quadrangles (for example 38097e1)



Field NEDResolution
 
*Alias NEDRESOLUTION
*Data type SmallInteger
*Width 2
*Precision 5
*Scale 0
Field description
For future use



Field NEDDate
 
*Alias NEDDATE
*Data type Integer
*Width 4
*Precision 10
*Scale 0
Field description
The most recent date of DEM source data in a quad



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






Overview Description
Entity and Attribute Overview
ContourElevation Elevation of each feature, expressed in ContourUnits.
ContourUnits  1 = Feet 2 = Meters (none in this dataset).
FCODE         10101 - Normal contour.
   10102 - Normal index contour.
   10104 - Depression contour.
   10105 - Depression index contour.
ContourInterval  Interval of contours.
Depression Provides more information on the contour classification, intended to help identify additional features as being depressions.
   0 = Depression status is indeterminate.
   1 = Feature is a depression contour.
   2 = Feature is a normal contour.
IndexFlag  0 = Normal contour.  Independent of depression status.  
1 = Index contour.  Independent of depression status.  
Typically every 5th contour is flagged as an index.
CELL_ID   An integer representing a unique USGS catalog item.  Replaces MapID.
ProcessDate  The date the contours were generated.
MapID   Old USGS catalog number on topographic quadrangles (for example 38097e1)
NEDResolution  For future use. 
NEDDate  The most recent date of DEM source data in a quad.





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 2016-02-26


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


Created in ArcGIS for the item 2011-01-28 06:48:53
Last modified in ArcGIS for the item 2016-02-26 13:19:27


Automatic updates
Have been performed Yes
Last update 2016-02-26 13:19:27


Metadata Contacts 

Metadata contact
Individual's name Bob Nutsch
Organization's name State of North Dakota
Contact's position GIS Coordinator
Contact's role  resource provider


Contact information
Phone
Voice 701-328-3212

Address
Type
Delivery point 600 East Boulevard Ave., Dept. 112
City Bismarck
Administrative area ND
Postal code 58505
e-mail addressbnutsch@nd.gov