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Re: Topographic Information

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How accurate of mapping do you need?  Autodesk Land Desktop will import Digital Elevation Models (DEM) that you can download from http://www.gisdatadepot.com/dem/demdownload.html
 
I think these models are only as accurate as quad sheets.
 
Chris Towne, P.E.
Manager, Civil Engineering
Chapman Technical Group
200 Sixth Avenue
St. Albans, WV 25177
Phone 304-727-5501
Fax 304-727-5580
----- Original Message -----
Sent: Tuesday, February 19, 2002 8:09 PM
Subject: Re: Topographic Information

I always thought that everything was generated by survey as well, but the speed with which proposal backgrounds can be produced without survey leads me to believe that we have reached the point where regional GIS systems have all the information available as a resource.
 
Paul Feather
----- Original Message -----
Sent: Tuesday, February 19, 2002 4:55 PM
Subject: RE: Topographic Information

Paul,
 
I'm familiar with what you're referring to, but I always thought that that data was provided
from surveys ordered on those properties.  The last firm I worked at did Surveys for
the roadwork that they did.  Here, we generally we subcontract out the surveys.  But
there is always the oddball occasion where you go out and do them yourself.
 
 
-----Original Message-----
From: Paul Feather [mailto:pfeather(--nospam--at)SE-Solutions.net]
Sent: Tuesday, February 19, 2002 7:49 PM
To: SEAOC List
Subject: Topographic Information

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.
 
Thanks,
 
Paul Feather