Have used RFA to create a flood analysis for both existing ground and design configuration channel changes. The existing ground analysis works just fine. Changed the file configuration for adding two box culverts to the stream at a road crossing. HEC-RAS runs just fine, the Post processing for Results review and Section views work fine. When I ask RFA to Add Flood Map it whirrs for a bit, then pops out with the following:
Erasing topo map results.
Displaying topo map results.
Unable to generate topo map ground surface:
No data found on elevation layers.
Floodplain mapping results generated.
No floodplain mapping is generated.
Any ideas or thoughts appreciated!
