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Kai Johnson

Mapper since:
January 27, 2014
Last map edit:
June 11, 2026

Latest Diaries

Diary Entry Qloverleaf - An Overpass QL interpreter using the QLever database

I’ve been working recently on a personal project to investigate how much of the Overpass query language could be implemented using a different back...

1 comment June 08, 2026

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...

1 comment April 27, 2026

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...

3 comments July 24, 2025

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...

1 comment June 05, 2024