GERD Lake: Africa’s New Inland Sea (74 BCM, 1,874 km², 70 Islands)
Short take: Ethiopia’s Grand Ethiopian Renaissance Dam (GERD) has created GERD Lake—a water body big enough to rank among Africa’s giants, with the power to reshape hydrology, ecology, and livelihoods across the Blue Nile. Here’s what its size really means—and why it’s so interesting. How big is “big”? At full supply level (FSL)—about 640 m