Lidar-based GIS map of New Hampshire stone walls

20 rob 2 8/4/2025, 2:40:07 PM nhgranit.maps.arcgis.com ↗

Comments (2)

lemonberry · 1h ago
This is neat. I see a few incorrect street names where I live, but also some old stone walls near where I frequently walk.
mauvehaus · 1h ago
I'm across the river from you, and my understanding is that a lot of the incorrect street names on online maps come from data sources with older names. E911 apparently caused a certain amount of upheaval with road names.

Some of the online mapping services seem to have compromised by just listing all possible names for a road, whereas OnX seems to be working off of a different (older?) data set than nearly everyone.