Lake Volta, created by the Akosombo Dam on the Volta River and filled by 1965, covers roughly 8,500 square kilometers, making it the largest man-made reservoir on Earth by surface area. Guinness World Records recognizes it as the largest reservoir measured this way.
Record no. MRB-2026-005964
World's Largest Reservoir by Surface Area
Reference Record – Not Certified
This record is compiled from publicly available sources for reference. It has not been examined or certified by The Book of World Records.