Does anyone know where/if I can buy any version of Hydraflow Hydrograph anyway. It seems to be discontinued but I'm shocked that I can't even find used versions.
As far as I know, it's been absorbed into Civil3d by Softdesk, and they're intentionally not selling it so they can funnel you into buying Civil3d.
Peter's HydroCAD software (heavily pimped around here) is a very capable and very affordable alternate, but I don't think it will run old Hydraflow models straight up.
Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East -
Thanks, that's very unfortunate. We are a very small firm and we had one rather old computer with 2007 hydraflow that recently crashed. We can use our hydrocad 10 however we will certainly need to access old hydraflow files at some point.
If you dig around the internet, I'm sure you can find a copy somewhere. I requested a user manual from them a while back and they sent me the software as well.