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Elevation Data (Digital Elevation Models)

United States Digital Elevation Models- A digital elevation model (DEM) is a 3D digital representation of ground surface topography or terrain. Digital Data Services, Inc. offers United States Digital Elevation Models in 3, 5, 10, 30, 90, and 300 meter resolutions. With a wide-variety of resolutions and delivered file formats possible, DDS can offer you the right DEM product for your needs.

 

International Digital Elevation Models- DDS offers worldwide coverage of Digital Elevation Models at 5 meter, 30 meter, 90 meter, and 1 kilometer resolutions.


Custom Digital Elevation Models- DDS offers custom DEM creation from topographic maps or from stereo satellite imagery.

 

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United States Digital Elevation Models

 

A digital elevation model (DEM) is a 3D digital representation of ground surface topography or terrain. Digital Data Services, Inc. offers United States Digital Elevation Models in 3, 5, 10, 30, 90, and 300 meter resolutions.

 

With a wide-variety of resolutions and delivered file formats possible, DDS can offer you the right DEM product for your needs. Data can be ordered in a variety of formats and map projections.

 

3 Meter Resolution Digital Elevation Models- DDS offers 3 meter resolution Digital Elevation Models for the United States, primarily in urban areas.

 

5 Meter Resolution Digital Elevation Models- Through our partnership with Intermap Technologies, DDS offers 5 meter Digital Surface Models (DSM) and Digital Terrain Models (DTM) for the United States.



10 Meter Resolution Digital Elevation Models- The 10 meter Digital Elevation Model dataset is a compilation of data from a variety of existing high-precision datasets such as LiDAR data, contour maps, and other sources which were reorganized and combined into a seamless dataset. Coverage is for the majority of the lower 48 states.


30 Meter Resolution Digital Elevation Models- The 30 meter Digital Elevation Model dataset was collected and processed using similar processes and source materials as the 10 meter datasets. Coverage is for the entire United States.



90 Meter Resolution Digital Elevation Models- The 90 meter Digital Elevation Model dataset was collected and processed using similar processes and source materials as the 10 meter datasets. Coverage is for the entire United States.



Custom Digital Elevation Models- DDS offers custom DEM creation from topographic maps or from stereo satellite imagery.

 

DataFinder Get a Quote for GIS Data

 

 

 

Custom Digital Elevation Models (DEMS)

Custom Digital Elevation Models can be created either by digitizing existing contour lines from a topographic map, or by using stereo imagery from DigitalGlobe satellite imagery.

 

DEMs Created from Topographic Maps- Typically, this is the most cost-effective between the two options of generating custom DEMs. DEM creation begins with the scanned, geo-referenced topographic map(s) or raster images. Contour Lines from the raster image are extracted, converted to digital vectors and given elevation values. Once a digital image has been fully vectorized, a surface grid is then generated from contours, with the water bodies added. The resulting resolution can be anywhere between 5-30 meters dependant on the contour intervals on the source document.

 

DEMs Created from Satellite Imagery- Available for nearly anywhere on the Earth, DDS provides a seamless, high-quality and consistent terrain data set. The terrain models are edgematched, cleaned for data anomalies, and seamlessly mosaicked. DEMs are edited within accuracy specifications to terrain height (example: buildings are not necessarily edited to the ground if they are lower than the accuracy specification). In areas where the ground cannot be seen due to dense canopy, elevation will not be edited to ground but rather will remain at canopy height. Drainage may not be monotonic due to accuracy limitations.

International Digital Elevation Models

A digital elevation model (DEM) is a 3D digital representation of ground surface topography or terrain. Digital Data Services, Inc. offers International Digital Elevation Models in 5, 30, 90, and 1 kilometer resolutions. With a wide-variety of resolutions and delivered file formats possible, DDS can offer you the right DEM product for your needs. Data can be ordered in a variety of formats and map projections.

 

5 Meter Resolution Digital Elevation Models (Europe)- Through our partnership with Intermap Technologies, DDS offers 5 meter Digital Surface Models (DSM) and Digital Terrain Models (DTM) for Europe.

30 Meter Resolution Digital Elevation Models- The 30 meter Digital Elevation Model dataset was collected through a remote sensing device, reorganized and combined into a seamless dataset. Coverage is worldwide. 

NEXTMap World 30- NEXTMap World 30 DSM is a combination of 90-meter Shuttle Radar Topographic Mission (SRTM),  30-meter ASTER, and 1-kilometer GTOPO. Coverage is worldwide.

90 Meter Resolution Digital Elevation Models- The 90 meter Digital Elevation Model dataset was collected a specially modified radar system. Coverage is between 60 degrees North and 56 degrees South latitude.

Custom Digital Elevation Models- DDS offers custom DEM creation from topographic maps or from stereo satellite imagery.

3 Meter Resolution United States Digital Elevation Models

A digital elevation model (DEM) is a 3D digital representation of ground surface topography or terrain. Digital Data Services, Inc. offers 3 meter resolution Digital Elevation Models for the United States.

 

The data coverage is primarily in urban areas with a vertical accuracy of approximately 1 meter. Data for custom areas are supplied in user provided format and map projection.