How is Lake Victoria different from the lakes in the East African Rift System?

Lake Victoria is distinct from the lakes of the East African Rift System primarily due to its geological origin and physical characteristics.12

• Geological Formation: While the rift lakes were formed by tectonic movements that created massive fissures in the Earth's crust, Lake Victoria occupies a shallow downwarp located between the Eastern and Western Rift highlands. Unlike the rift lakes, which are set in tectonic escarpments, Lake Victoria is situated in a region of erosion surfaces.12
• Depth and Shape: Lake Victoria is relatively shallow, with a maximum depth of about 260 feet (80 meters), and possesses a quadrilateral shape. In contrast, many rift lakes, such as Lake Tanganyika, are characterized by extreme depths and elongated forms created by steep, flanking escarpments.1
• Hydrology and Environment: The deeper rift lakes, including Tanganyika and Lake Kivu, often contain permanently deoxygenated deep waters that act as biological deserts, sometimes holding lethal amounts of hydrogen sulfide. Lake Victoria, by comparison, is a large freshwater body that significantly influences the climate of its surrounding margins, maintaining more consistent temperatures and well-distributed precipitation.3