Bureau of Transportation Statistics, 1997, URBAN: U.S. Urbanized Areas for the Long Island Sound GIS project.: Bureau of the Census Urbanized Area Boundaries, Bureau of Transportation Statistics, Washington, DC.Online Links:
McMullen, K.Y., Poppe, L.J., Paskevich, V.F., Doran, E.F., Moser, M.S., Christman, E.B., and Beaver, A.L, 2005, Surficial Geologic Interpretation and Sidescan Sonar Imagery of the Sea Floor in West-Central Long Island Sound: Open-File Report 2005-1018, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.Online Links:
This is a Vector data set. It contains the following vector data types (SDTS terminology):
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000000. Longitudes are given to the nearest 0.000000. Latitude and longitude values are specified in Decimal degrees.
The horizontal datum used is North American Datum of 1927.
The ellipsoid used is Clarke 1866.
The semi-major axis of the ellipsoid used is 6378206.400000.
The flattening of the ellipsoid used is 1/294.978698.
Sequential unique whole numbers that are automatically generated.
Coordinates defining the features.
Character string
Character string
Acknowledgment of the Bureau of Transportation Statistics National Transportation Atlas Database as the originator of this dataset would be appreciated in products derived from these data.
(508) 548-8700 x2281 (voice)
(508) 457-2310 (FAX)
vpaskevich@usgs.gov
The data provide users with information about the locations, names, urban, census and FIPS Codes, and size of urban areas primarily for national planning applications.
US Bureau of the Census, 1992, Urbanized areas.
Person who carried out this activity:
Data sources produced in this process:
Person who carried out this activity:
(508) 548-8700 x2281 (voice)
(508) 457-2310 (FAX)
vpaskevich@usgs.gov
Data sources produced in this process:
Bureau of Transportation Statistics (comp.), 1997, National Transportation Atlas Databases: National Transportation Atlas Databases, Bureau of Transportation Statistics, Washington, DC.
Attributes were supplied by the Bureau of the Census.
The Bureau of the Census Urbanized Area database was derived from the TIGER data base. It was created from data created at a scale of 1:100,000 or better and as such has a positional accuracy of +/- 80m.
The original data set contained 405 distinct Urbanized Areas are identified database. This is a subset of the original dataset and has been clipped to the extent of the Long Island Sound GIS project extent.
All node-link and polygon topological relationships are created and verified using computer algorithms.
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints:
- The Bureau of the Census Urbanized Area Boundaries files were acquired from the US Bureau of the Census. Please review the cross reference information for the original data set credit.
(508) 548-8700 x2281 (voice)
(508) 457-2310 (FAX)
vpaskevich@usgs.gov
Downloadable Data: urban.shp, U.S. urbanized area for the Long Island Sound GIS project area.
Although this data set has been used by the U.S. Geological Survey, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials.
| Data format: | Five files (urban.shp, urban.dbf, urban.shx, urban.sbx, urban.sbn) comprising the ArcView polygon shapefile components, 'prj' and 'avl' files, metadata text file and browse graphic. in format ArcView (version 3.2) ESRI polygon shapefile Size: 0.409 |
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| Media you can order: |
CD-ROM
(Density 650
Mbytes)
Note: The user must have a computer system with a CD-ROM available. To browse the information contained on this CD-ROM, the user must have a current WWW browser available. The user must also have software installed on their computer to unzip the archived file.
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The data are available in ArcView shapefile format. The user must have ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView, the user may utilize another GIS application package capable of importing data.
(508) 548-8700 x2281 (voice)
(508) 457-2310 (FAX)