Data format: Raster Dataset

File or table name: srer_dem

Coordinate system: Universal Transverse Mercator

Theme keywords: SRER mosaic DEM

Abstract: This is a mosaic of four USGS 30 meter DEMs that has been clipped to the SRER boundary.

FGDC and ESRI Metadata:

Metadata elements shown with blue text are defined in the Federal Geographic Data Committee's (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM). Elements shown with green text are defined in the ESRI Profile of the CSDGM. Elements shown with a green asterisk (*) will be automatically updated by ArcCatalog. ArcCatalog adds hints indicating which FGDC elements are mandatory; these are shown with gray text.

Identification Information:

Citation information:
Originators: U.S. Geological Survey

*File or table name: srer_dem

Publication date: 2001
*Geospatial data presentation form: raster digital data

*Online linkage: \\Vasallus\vasdata\buffel_srer\SRER_shp_files\srer_dem

This is a mosaic of four USGS 30 meter DEMs that has been clipped to the SRER boundary.

This data was orignally obtained from the ALRIS program in the USGS DEM data format.  It was read into the ARC/INFO GRID format at the Advanced Resource Technology Group at The University of Arizona.  These data have been projected into the NAD83 datum.  This GRID file is a concatenation of the following USGS 7.5 minute quadrangles: Corona de Tucson, Green Valley, Helvetia, and Sahuarita that have been subset to the SRER boundary.

*Language of dataset: en

Time period of content:
Time period information:
Single date/time:
Calendar date: 2001

Currentness reference:
publication date

Progress: Complete
Maintenance and update frequency: None planned

Spatial domain:
Bounding coordinates:
*West bounding coordinate: -110.976612
*East bounding coordinate: -110.780462
*North bounding coordinate: 31.917983
*South bounding coordinate: 31.753776

Local bounding coordinates:
*Left bounding coordinate: 502215.000000
*Right bounding coordinate: 520755.000000
*Top bounding coordinate: 3531345.000000
*Bottom bounding coordinate: 3513165.000000

Theme keywords: SRER mosaic DEM

Use constraints:
USGS-authored or produced data and information are considered to be in the U.S. public domain. While the content of most USGS Web pages is in the U.S. public domain, not all information, illustrations, or photographs on our site are. Some photographs, images, and/or graphics that appear on USGS Web sites are used by the USGS with permission from the copyright holder. These materials are generally marked as being copyrighted. To use these copyrighted materials, you must obtain permission from the copyright holder under the copyright law.

When using information from USGS information products, publications, or Web sites, we ask that proper credit be given. Credit can be provided by including a citation such as the following: 
Credit: U.S. Geological Survey 
Department of the Interior/USGS
U.S. Geological Survey/photo by Jane Doe (if the photographer/artist is known)

Additional information on copyrights and trademarks is available at

Point of contact:
Contact information:
Contact organization primary:
Contact organization: U.S. Geological Survey

*Native dataset format: Raster Dataset
*Native data set environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog

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Data Quality Information:

Process step:
Process description:
Dataset copied.

Source used citation abbreviation:

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Spatial Data Organization Information:

*Direct spatial reference method: Raster

Raster object information:
*Image format:
*Number of bands: 1

*Row count: 606
*Column count: 618
*Vertical count: 1

*Cell size X direction: 30.000000
*Cell size Y direction: 30.000000

*Bits per pixel: 32
*Pyramid layers: FALSE
*Image colormap: FALSE
*Compression type: Default

*Raster object type: Grid Cell
*Raster display type: matrix values
*Raster origin: Upper Left

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Spatial Reference Information:

Horizontal coordinate system definition:
Coordinate system name:
*Projected coordinate system name: NAD_1983_UTM_Zone_12N
*Geographic coordinate system name: GCS_North_American_1983

Grid coordinate system:
*Grid coordinate system name: Universal Transverse Mercator
Universal Transverse Mercator:
*UTM zone number: 12
Transverse mercator:
*Scale factor at central meridian: 0.999600
*Longitude of central meridian: -111.000000
*Latitude of projection origin: 0.000000
*False easting: 500000.000000
*False northing: 0.000000

Planar coordinate information:
*Planar coordinate encoding method: row and column
Coordinate representation:
*Abscissa resolution: 30.000000
*Ordinate resolution: 30.000000
*Planar distance units: meters

Geodetic model:
*Horizontal datum name: North American Datum of 1983
*Ellipsoid name: Geodetic Reference System 80
*Semi-major axis: 6378137.000000
*Denominator of flattening ratio: 298.257222

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Distribution Information:

Resource description: Downloadable Data

Standard order process:
Digital form:
Digital transfer information:
*Transfer size: 1.453
*Dataset size: 1.453

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Metadata Reference Information:

*Metadata date: 20080623

*Language of metadata: en

Metadata contact:
Contact information:
Contact organization primary:
Contact organization: U.S. Geological Survey

Contact address:
Address type: mailing address
Mail Stop 807 National Center USGS
City: Reston
State or province: VA
Postal code: 20192

*Metadata standard name: FGDC Content Standards for Digital Geospatial Metadata
*Metadata standard version: FGDC-STD-001-1998
*Metadata time convention: local time

Metadata extensions:
*Online linkage:
*Profile name: ESRI Metadata Profile

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