Kai Johnson
- Mapper since:
- January 27, 2014
- Last map edit:
- April 30, 2026
Latest Diaries
Diary Entry A New Container Image for Overpass
I’d like to announce the release of a new Docker container instance for Overpass. I’ve been running Overpass locally for a couple of years and hav...
Diary Entry Some Thoughts on Phantom Fords
Many OSM validators will report an error if a waterway crosses a highway without some additional tags or structure at the intersection, such as a b...
Diary Entry The State of GNIS Imports into OSM
This diary entry is also available as a personal page on the OSM wiki. Some History of GNIS Imports GNIS is a database developed by USGS that con...
Diary Entry A Glossary of Tags for Landforms
In the course of working with GNIS data from the US Geological Survey, I’ve sometimes been frustrated with the limited range of expression in OSM t...