In 2012, a team of researchers at Portland State University published the online Atlas of Oregon Lakes. The team included limnologists, cartographers, GIS specialists, and web map developers. This article describes the process from the print Atlas of Oregon Lakes, published by Oregon State University Press in 1985, to web mapping and digital publication of the online atlas in 2012. It also discusses the library-like issues of cataloging lakes, keeping on track with standards for scientific water data, and cooperating with other organizations.