Accuracy of data is always important. When it comes to utility mapping, even though 1-2ft are added to markings ( from the actual identified utility location) just for safety reasons, using an adequate GPS unit ( from an accuracy stand point) will make a big difference no matter how digital  data is being used ( CAD or GIS overlays for site plans/ excavation reference/…)  Therefore, using a standard GPS unit that integrates with your locating equipment ( 90% of the time this is what’s being used by locating companies ) will allow you to capture data with a 1-5m accuracy .  We, at Advanced Mapping, believe that such accuracy introduces too much error ( additional 3-15ft added to the initial 2ft locating/marking) and recommend using a dedicated unit for capturing markings. While we started with foot-level GPS units, we are currently using Inch-level units,  for capturing locating markings.

In conclusion, if you want to locate utilities and are in need of digital data  (and why wouldn’t you ? )  we recommend hiring a locating company to do the locating and a mapping company to take care of the mapping task!

Why Advanced Mapping? It’s simple: we specialize in GIS & GPS solutions and we actually enjoy what we are doing!  It’s easy to do a good job when you care and love your job!  Please give us a call.  Quick turnaround, integrity and quality is what all our customers experience!

Please feel free to contact us with any GIS or GPS related questions.