United States National Atlas Urbanized Areas is a polygon theme representing urban areas in the United States derived from the urban areas layer of the Digital Chart of the World (DCW).
Purpose
United States National Atlas Urbanized Areas provides information about the locations, names, and populations of urbanized areas for conducting geographic analysis on national and large regional scales.
Supplemental Information
Largest scale when displaying the data: 1:1,500,000.
Temporal Extent
Currentness Reference
publication date
Time Instant
200101
Bounding Box
West
-165.447891
East
-66.986388
North
64.856135
South
19.191791
Theme Keyword
polygon
urbanized areas
urban areas
cities
boundaries
Theme Keyword Thesaurus
None
Theme Keyword
boundaries
society
Theme Keyword Thesaurus
ISO 19115 Topic Categories
Place Keyword
United States
Place Keyword Thesaurus
Library of Congress Subject Headings
Temporal Keyword
2001
Temporal Keyword Thesaurus
None
Access Restrictions
For current Columbia affiliates only.
Use Restrictions
For educational, non-commercial use only.
Status
Complete
Maintenance and Update Frequency
Annually
Point of Contact
Contact Organization
Esri
Delivery Point
380 New York Street
City
Redlands
State
California
Postal Code
92373-8100
Country
USA
Contact Telephone
909-793-2853
Contact Facsimile Telephone
909-793-5953
Contact Electronic Mail Address
info@esri.com
Hours of Service
7:00 a.m.-5:30 p.m. Pacific time, Monday-Friday
Native Data Set Environment
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; Esri ArcCatalog 9.2.2.1350
Data Quality Information
Logical Consistency Report
The shapefile is converted to SDC (Smart Data Compression) format using tools in ArcGIS. The SDC data set is then imported into a file geodatabase to verify, validate, and if needed repair the geometry.
Completeness Report
After processing, the data set is checked for drawing display and number of records and file sizes compared with source materials.
Horizontal Positional Accuracy Report
The geospatial part of this data set was originally extracted from the Digital Chart of the World at 1:1,000,000-scale with some geospatial data from a USGS 1:2,000,000-scale hydrography layer. It was updated several times using various sources whose horizontal positional accuracies are unknown.
Lineage
Source
Originator
National Atlas of the United States and the U.S. Geological Survey
Publication Date
200101
Title
Urban Areas of the United States, 2012
Geospatial Data Presentation Form
vector digital data
Publication Information
Publication Place
Reston, Virginia, USA
Publisher
U.S. Geological Survey
Other Citation Details
The data set was downloaded from the website in August 2002.
Online Linkage
http://www.nationalatlas.gov/atlasftp.html
Source Scale Denominator
2000000
Type of Source Media
online
Source Temporal Extent
Time Period Information
Single Date/Time
Calendar Date
200101
Source Currentness Reference
publication date
Contribution
Attribute and geospatial data
Spatial Data Organization Information
Direct Spatial Reference Method
Vector
Point and Vector Object Information
SDTS Terms Description
SDTS Point and Vector Object Type
G-polygon
Point and Vector Object Count
6094
Spatial Reference Information
Horizontal Coordinate System Definition
Geographic
Latitude Resolution
0.000000
Longitude Resolution
0.000000
Geographic Coordinate Units
Decimal degrees
Geodetic Model
Horizontal Datum Name
D_WGS_1984
Ellipsoid Name
WGS_1984
Semi-major Axis
6378137.000000
Denominator of Flattening Ratio
298.257224
Entity and Attribute Information
Entity Type
Entity Type Label
urban_dtl
Entity Type Definition
The polygons represent boundaries for places in the United States where concentrated populations exist.
Entity Type Definition Source
Esri
Attributes
ObjectID
Internal feature number. (Sequential unique whole numbers that are automatically generated.)
Definition Source
Esri
Shape
Feature geometry. (Coordinates defining the features.)
Definition Source
Esri
NAME
The name of the urban area. (Names for the features.)
Definition Source
National Atlas of the United States and the United States Geological Survey
STATE
The two-letter abbreviation for each state in which the urban area is located. (Federal Information Processing Standards 5-2National Institute of Standards and Technology)
Definition Source
Department of Commerce, National Institute of Standards and Technology
FIPS
The FIPS code (two-digit number) for each state in which the urban area is located. (Federal Information Processing StandardsNational Institute of Standards and Technology)
Definition Source
Department of Commerce, National Institute of Standards and Technology
POPULATION
The population of the urban area.
-999 or 0
The population is unknown.
Definition Source
National Atlas of the United States and the United States Geological Survey
Distribution Information
Format Name
SDC
Distributor
Esri; Esri Offices
Online Access
http://www.ArcGIS.com
Name
Metadata Reference Information
Metadata Date
20130205
Metadata Contact
Contact Information
Contact Organization Primary
Contact Organization
Research Data Services (RDS), Columbia University Libraries
Contact Person
GIS/Metadata Librarian
Contact Address
Address
420 W. 118th St. 215 IAB, MC 3301
City
New York
State or Province
NY
Postal Code
10027
Contact Voice Telephone
(212) 854-6012
Contact Electronic Mail Address
data@library.columbia.edu
Metadata Standard Name
FGDC Content Standards for Digital Geospatial Metadata
