[Talk-us] US Bureau of Land Management Boundaries

[Mark Wagner]

On Sat, 5 Jan 2019 21:19:10 -0600
Ian Dees <ian.dees at gmail.com> wrote:

> Hi Brad, thanks for proposing this import and posting it here.
> 
> I would strongly prefer that we not import boundaries like this into
> OSM. Boundaries of all sorts are almost impossible to verify with
> OSM's "on the ground" rule, but BLM boundaries in particular are such
> an edge case (they have no other analog in the world, really) and
> almost never have apparent markings on the ground to check. Since
> these boundaries aren't visible, this data can never be improved by
> an OpenStreetMap contributor. The boundaries are defined by the
> government, and any sort of change to them would make them diverge
> from the official source.

I don't know about BLM land in general, but I was able to verify a
large portion of Fishtrap Recreation Area
(https://www.openstreetmap.org/relation/6154436) by tracing fence lines
and looking for "No Trespassing" signs.  I suspect most of the other
BLM rangeland can be mapped this way as well.

-- 
Mark