I've been mapping a small section of National Forest, which straddles two counties; Boone and Callaway.
On every map I can find - Boone Countys GIS dept., census.gov, US Forest Service - the county border strictly follows a river, Cedar Creek. However, on OSM, the boundary is shaped exactly like the river, but is shifted about a quarter mile north-east of it. Here's a small section to show what I mean: https://www.openstreetmap.org/#map=14/38.8117/-92.1427 Now, I'm pretty sure this is a mistake - rivers move, but they don't shift in perfectly synchronized 40-mile segments like this. I'd like to find out how that boundary is actually legally defined, but my google-fu is not strong enough, it seems. US mappers - do any of you know what government body is the keeper of truth for Missouri county boundaries? Best, Jacob
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