This week’s chart is a visualization of usage for “Water Fountain” vs. Drinking Fountainvs. “Bubbler”. Water fountain predominates in the south and northeast, while drinking fountain in the west. “Bubble” is regional in the upper Midwest.
The interactive application is available from Joshua Katz a PhD candidate in statistics at NC State. There are a variety of usage cases which can be visualized with this tool (pop vs. soda, milk shake vs. frappé). Similar types of linguistic geography were done by Hans Kurath in Linguistic Geography of the United States, described in this blog post which shows “bucket vs. pail”.