Topography - Differs from Survey and Google Maps

[Gustavo_ColmenaresNJ5F7]

I am working on a study and using forma as we don't have a full survey. When I compare the survey to google earth it is close in spot elevation with a grade change of around 40' +/-. 

The same grade change in forma is around 200' +/-.

Has anyone encountered such a large discrepancy? 

Is there a way to revise the topography wihin Forma? 

[guillaume_lassiat]

Hello, Forma sources terrain data from multiple providers, and the quality and accuracy can vary significantly depending on the region. Some providers offer highly detailed and reliable elevation data, while others may be more generalized.

You can check the data providers we do have following this link: https://app.autodeskforma.com/data-provider-map

Unfortunately, Forma currently does not support full terrain topography editing. The only available tool for modifying terrain is the terrain pad, which allows for localized flattening or adjustment but not large-scale topographic corrections. 

To better understand the issue, may I ask roughly where your project is located within Forma?