Absolutely, you can, and they should be better quality than any you do with simple floats, lines, compasses, and range finders.I_AM:if you have the bathymetry dataset then you can easily generate any map - including accurate dive maps.
The only reason for not going that route is that I don't think we have that capability at present. I know I personally have everything I need to build a map useful for dive navigation -- I could get away with just a depth gauge, one float, and a range finder, assuming I was content to do it all relative to control points.
Frankly, doing it the "old-fashioned surveyor's way" just seems like a lot of fun to me, and it just so happens that it's fun *and* gives you a decent map when you're done.