I use the pima county mapguide around our area, but
www.land.state.az.us/images/maps/stateplot.jpg is also a source.. Very
little detail because it shows the entire state in one image, but you
can get a vague idea if you will be close or not with this..
www.land.state.az.us/news/2004/ReformProposal.htm has some PDF files
about proposed changes
http://sco.az.gov/website/Arizona/viewer.htm is a decent map for
Arizona.. you can zoom in and out and toggle the layers.