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Lidar-based GIS map of New Hampshire stone walls

Lidar-based GIS map of New Hampshire stone walls

2 comments

·August 4, 2025
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lemonberry

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

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.