THIS DATA SET HAS BEEN PROJECTED TO THE FOLLOWING PARAMETERS 

Projection:     UTM
Zone:           12
Units:          meters
Datum:          NAD83   (previously NAD27)
Spheroid:       GRS80   (previously Clarke 1866)

 
THIS DOCUMENT WAS CREATED AT ART, UNIVERSITY OF ARIZONA, September 21, 2001

NAME OF DATASET:   SRER_DEM

DATA TYPE:      raster


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

Cell Size =              30.000         Data Type:  Floating Point
Number of Rows    =         606
Number of Columns =         618

FORMAT:
        Arc/Info GRID

DATA SIZE:                              
Approximate Megabytes: 	1.495


HISTORY:
     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.
     
MAINTENANCE:
NONE