ChartTiff offers Clean and Standardized DEMs (Digital Elevation Models)

Complete Coverage of the Continental US in 30 or 60 Meter resolution

Created using the latest elevation (10 / 30 Meter) data available
Created using the latest release level (ODB Version 1 / 2) data available

Have all voided and slivered areas filled
Made as rectangular data sets to be compatible with
our ChartTiff Geo's and GeoLite's
File names compatible with USGS DRG Quad file names
Optional Shaded Elevation Models can be added as an additional
file to your current Elevation Data selections.
Click Here for Additional Information.
In the standard USGS DEM (Digital Elevation Model) file format
See following for USGS DEM standard format definition:
             Click here to download 1DEM0897 standard in PDF format
             Click here to download 2DEM0198 standard in PDF format
             Click here to download 3DEM0897 standard in PDF format
             Click here to download PDEM0198 standard in PDF format
To Request a DEM Quote See Request
To Order Maps On-Line See: MAPS

Sold by Individual Quad

Available via Download and Custom CD
60 Meter resolution only per quad
30 Meter resolution only per quad
Available Projections
UTM - User Selectable Zones - NAD27 / NAD83 / WGS72 / WGS84
State Plane - User Selectable Zones - NAD27 / NAD83
Latitude / Longitude - NAD27 / NAD83 / WGS72 / WGS84
Available Formats
USGS Standard DEM file format

ESRI Grid Float Format

ASCII Text, X,Y,Z format
    XYZ text file format is a simple text format
    where each elevation point is described by x, y, and z coordinates.
    The x value defines the east/west coordinate,
           y defines the north/south coordinate, and
           z defines the elevation.
    User can select Tab, Comma or Space delimited file.
    The XYZ text format does not contain any header information:

           x1,y1,z1
           x2,y2,z2
           x3,y3,z3
           .....
           xn,yn,zn

PLS-CADD ASCII Text, X,Y,Z format
    XYZ text file format specifically for PLS CADD Software

C Tech File Format
    In C-Tech GMF and EFF format which is directly read by C-Tech's software

Sold by Custom Area

Available via Download and Custom CD
Areas available from 3.75 Minutes to 1 Degree Width / Height:
30 Meter and 60Meter resolutions
Available Projections
UTM - User Selectable Zones - NAD27 / NAD83 / WGS72 / WGS84
State Plane - User Selectable Zones - NAD27 / NAD83
Latitude / Longitude - NAD27 / NAD83 / WGS72 / WGS84
Available Formats
USGS Standard DEM file format
ESRI Grid Float Format
ASCII Text, X,Y,Z format
PLS-CADD ASCII Text, X,Y,Z format
C Tech File Format

Sold by State

30 and 60 Meter resolutions available
Standard UTM (Universal Transverse Mercator) projection in Native Zones Only
UTM - Native Zones - NAD27 - Horizontal Resolution (Meters / Feet) - Elevation (Feet/Meters)
UTM - Native Zones - NAD83 - Horizontal Resolution (Meters / Feet) - Elevation (Feet/Meters)
On board Install software allows for State Packages.
for Datum selection of NAD27/NAD83
for Resolution selection of Feet / Meters
for file renaming (quad number or quad name)

Sold by Full Degrees on CD

30 Meter resolution data
Includes the Full Degree Mosaic DEM
Available in USGS Standard DEM Format for per degree
Available Projections
UTM - User Selectable Zones - NAD27 / NAD83 / WGS72 / WGS84
State Plane - User Selectable Zones - NAD27 / NAD83
Latitude / Longitude - NAD27 / NAD83 / WGS72 / WGS84
Lambert, Albers and other projections available. Request Quote.