Map Librarian's Toolbox
Global
Natural Earth is a public domain map dataset available at 1:10m, 1:50m, and 1:110 million scales. “Free for use in any type of project.” Cultural and natural layers suitable for global- and continental- scale mapping and analysis.
Dams
- Global Dam Watch
This organization curates three datasets of current and future dams and reservoirs globally. Originally created by Columbia University’s CIESIN, v1.01 of this dataset is dated 2011.