Evaluating the flood risk to a development site within a large 2D Zone (domain). Several mesh zones and mesh level zones have been created for the development scenario. Including the representation of river reaches to represent swale structures. The problem encountered, is the 2D zone elements change once re-meshed and a direct comparison between baseline and development scenarios for the 2D zone elements outside the area of interest cannot be made. Element sizes have changed.
Any idea’s how to keep the 2D zone the same, so a comparative analysis of results can be made in wider 2D domain i.e. outside the area of interest.

Hope this is self-explanatory?

Thanking you in advance.