QGIS Setting Projection
Setting the projection for the project, uses this projection for all input files that do not have a projection associated with them. For example, when results grid files are imported they are assumed to have the projection of the project. It is recommended that you set a projection for projects you are working on.
To set the projection:
- From the menus select Settings >>> Project Properties;
 - Navigate to the Coordinate Reference System tab and set the projection you wish to work in (same as your TUFLOW model); and
 - Select Apply.
 
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