I used a Google image search (https://images.google.com/) to figure out that it's a map showing the average occurrence of flood during the year. https://www.wired.co.uk/article/climate-change-floods https://www.courthousenews.com/climate-change-wreaking-havoc-europes-flood-season/ Jason Glatz, Maps Specialist University Libraries (2014 Waldo Library) Western Michigan University 1903 W Michigan Ave Kalamazoo MI 49008-5353 USA From: Maps-L: Map Librarians, etc. <[log in to unmask]> On Behalf Of Kathy Stroud Sent: Thursday, January 3, 2019 3:39 PM To: [log in to unmask] Subject: Trivia Question - What is this a map of??? I know I've seen this map before, but I don't recall what it represents. Obviously I have something taken out of context. https://tinyurl.com/y7qr8erk Kathy Stroud David and Nancy Petrone Map/GIS Librarian Knight Library 1299 University of Oregon Eugene, OR 97403-1299 541-346-3051 "A map is not just a picture-it's also the data behind the map, the methodology used to collect and parse that data, the people doing that work, the choices made in terms of visualization and the software used to make them."