Hi there I am new to using the HEC RAS and the RAS MAPPER function. I would like to how can I export the E.G elevation data from HEC-RAS and/or RAS mapper to Autocad Civil 3D? It looks like only the water surface elevation can be exported from RAS MAPPER. Any help will be appreciated.
You could do it by brute force. You can specify a water surface elevation for each cross-section in the steady flow editor under “set internal changes in WS and EG”. In your case, it would be the EG, rerun the model, and then you could export it out with the energy grade from either the export GIS data or Mapper.