Return to index: [Subject] [Thread] [Date] [Author]

Topographic Information

[Subject Prev][Subject Next][Thread Prev][Thread Next]
Is anyone out there familiar with where Civil firms get the topographic backgrounds for new civil works?  I see a lot of the latest info we get on Civil drawings has a CAD background taken from some form of regional or national database.  Anyone aware of the source for this info?
I have a one time need for background info, and was hoping there is a web based per site service or something similar.
Paul Feather