Gridgen for multi-layer disv

[RyanConway91]

Seems like the way to get a multi layer disv is to pass same refinement feature to every model layer. This seems inefficient, as the whole point of disv is that the lateral connectivity is the same in every layer (right?). Is there a way to run a 1 layer disv model and post process the gridgen connectivity output into n layers?

[christianlangevin]

Hi @RyanConway91, I'm wondering if it isn't straightforward to just call GRIDGEN with 1 layer and then change nlay and botm before before creating the flopy model? As you said, the vertices and cell2d blocks should be the same for any number of layers. Maybe I'm missing something? There shouldn't be a need to get connectivity if you are using DISV, but that would be an issue for a DISU grid.

[RyanConway91]

This approach seems to work and is significantly faster then building all the layers at once. Thanks!