Kentucky Single Zone 30ft DEM (USGS)

Identification Information:

Citation:

Citation Information:

Originator: Commonwealth of Kentucky Environmental and Public Protection Cabinet Office of Information Services GIS Branch, GIS Branch

Publication Date: 20181205

Publication Time: 120000

Title: Kentucky Single Zone 30ft DEM (USGS)

Geospatial Data Presentation Form: vector digital data

Publication Information:

Publication Place: 669 Chamberlin Ave, Frankfort, KY, 40601, US

Publisher: Kevin Hogue

Online Linkage: https://ky.box.com/v/kymartian-Ky-USGSDEM

Description:

Abstract: A digital elevation model (DEM) contains a series of elevations ordered from south to north with the order of the columns from west to east. The DEM is formatted as one ASCII header record (A-record), followed by a series of profile records (B- records) each of which include a short B-record header followed by a series of ASCII integer elevations per each profile. The last physical record of the DEM is an accuracy record (C-record). The 7.5-minute DEM provides coverage in 7.5- by 7.5-minute blocks. Each product provides the same coverage as a standard USGS 7.5-minute quadrangle. Coverage is available for the contiguous United States, Hawaii, and Puerto Rico but is not complete. This DEM dataset has been reprojected to the Kentucky NAD83 Single Zone Coordinate System using the interpolation method specified by NADCON (NGS). 7.5-minute DEMs have rows and columns that vary in length and are staggered. The bounding coordinates form a quadrilateral (no two sides are parallel to each other), rather than a rectangle. The user will need to pad out the uneven rows and columns with blanks or flagged data values if an application requires a rectangle. Some software vendors have incorporated this function into their software for input of standard formatted USGS DEMs.

Purpose: DEMs can be used as source data for digital orthophotos, and as layers in geographic information systems, for earth science analysis. DEMs can also serve as tools for volumetric analysis, for site location of towers, or for drainage basin delineation. These data were collected as part of the National Mapping Program.

Status:

Progress: Complete

Maintenance and Update Frequency: None planned

Spatial Domain:

Bounding Coordinates:

West Bounding Coordinate: -89.625

East Bounding Coordinate: -81.875

North Bounding Coordinate: 39.250

South Bounding Coordinate: 36.375

Keywords:

Theme:

Theme Keyword Thesaurus: ISO 19115 Topic Categories

Theme Keyword: elevation

Theme:

Theme Keyword Thesaurus: None

Theme Keyword: DEM

Theme Keyword: digital elevation model

Theme Keyword: digital terrain model

Theme Keyword: hypsography

Theme Keyword: altitude

Theme Keyword: height

Theme Keyword: USGS

Access Constraints: None

Use Constraints: None

Data Set Credit: The original DEM dataset was provided by the U.S. Geological Survey in the NAD83 Kentucky North and South state plane coordinate zones.

Native Data Set Environment: Version 6.2 (Build 9200) ; Esri ArcGIS 10.5.1.7333

Spatial Data Organization Information:

Direct Spatial Reference Method: Vector

Point and Vector Object Information:

SDTS Terms Description:

SDTS Point and Vector Object Type: GT-polygon composed of chains

Point and Vector Object Count: 2384214

Spatial Reference Information:

Horizontal Coordinate System Definition:

Geographic:

Latitude Resolution: 8.983152841195215e-009

Longitude Resolution: 8.983152841195215e-009

Geographic Coordinate Units: Decimal Degrees

Geodetic Model:

Horizontal Datum Name: D WGS 1984

Ellipsoid Name: WGS 1984

Semi-major Axis: 6378137.0

Denominator of Flattening Ratio: 298.257223563

Entity and Attribute Information:

Detailed Description:

Entity Type:

Entity Type Label: Kentucky

Attribute:

Attribute Label: OBJECTID

Attribute Definition: Internal feature number.

Attribute Definition Source: Esri

Attribute Domain Values:

Unrepresentable Domain: Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute Label: SHAPE

Attribute Definition: Feature geometry.

Attribute Definition Source: Esri

Attribute Domain Values:

Unrepresentable Domain: Coordinates defining the features.

Attribute:

Attribute Label: SHAPE_Length

Attribute Definition: Length of feature in internal units.

Attribute Definition Source: Esri

Attribute Domain Values:

Unrepresentable Domain: Positive real numbers that are automatically generated.

Attribute:

Attribute Label: SHAPE_Area

Attribute Definition: Area of feature in internal units squared.

Attribute Definition Source: Esri

Attribute Domain Values:

Unrepresentable Domain: Positive real numbers that are automatically generated.

Distribution Information:

Distributor:

Contact Information:

Contact Organization Primary:

Contact Organization: Kentucky Division of Geographic Information

Contact Person: Kevin Hogue

Contact Position: GIS specialist

Contact Address:

Address Type: physical

Address: 669 Chamberlin Ave

City: Frankfort

State or Province: KY

Postal Code: 40601

Country: US

Contact Voice Telephone: 502-782-0703

Contact Electronic Mail Address: kevin.hogue@ky.gov

Hours: 8:00 am -4:30 pm EST M-F

Resource Description: Downloadable Data

Distribution Liability: See access and use constraints information.

Metadata Reference Information:

Metadata Date: 20181205

Metadata Contact:

Contact Information:

Contact Organization Primary:

Contact Organization: Kentucky Division of Geographic Information

Contact Person: Kevin Hogue

Contact Position: GIS specialist

Contact Address:

Address Type: physical

Address: 669 Chamberlin Ave

City: Frankfort

State or Province: KY

Postal Code: 40601

Country: US

Contact Voice Telephone: 502-782-0703

Contact Electronic Mail Address: kevin.hogue@ky.gov

Hours: 8:00 am -4:30 pm EST M-F

Metadata Standard Name: FGDC Content Standard for Digital Geospatial Metadata

Metadata Standard Version: FGDC-STD-001-1998

Metadata Time Convention: local time