Lake Naivasha is a freshwater lake in Kenya outside the town of Naivasha in Nakuru County which lies north west of Nairobi. It is part of the Great Rift Valley. The name derives from the local Maasai name Nai’posha, meaning “rough water” because of the sudden storms which can arise.
Lake Naivasha is at the highest elevation of the Kenyan Rift valley in a complex geological combination of volcanic rocks and sedimentary deposits from the lake.This lake receives large amounts of inflows from perennial Malewa and Gilgil rivers. There is no visible outlet from this lake but since the lake water is relatively fresh it is assumed to have an underground outflow.
This lake is surrounded by a swamp whose volumes vary largely depending on rainfall.This lake forms the entrance to the Hell’s gate national park in Kenya.
The lake is home to a variety of types of wildlife including different species of birds and a sizeable population of hippos. The fish community in the lake has been highly variable over time, influenced by changes in climate, fishing effort and the introduction of invasive species.
There are two smaller lakes in the vicinity of Lake Naivasaha ie Lake Oloiden and Lake Sonachi . The Crater Lake Game Sanctuary lies nearby, while the lake shore is known for its population of European immigrants and settlers.