Data Warehouse files? What do they contain?
I'm pretty sure in vanilla AutoCAD you can't read them without additional tools.
@VimaLDP ,
Take note of the requirements:
Select the "Mark as Solution" if my post solves your issue or answers your question.
Seleccione "Marcar como solución" si mi publicación resuelve o responde a su pregunta.
Emilio Valentin
Ah, now it is more clear.
You can connect AutoCAD to WaterGEMS as described here:
And save the data to a DWG directly. It seems not possible to load such files in AutoCAD.