Lake Jipe is an inter-territorial lake straddling the borders of Kenya and Tanzania. On the Kenyan side, it is located south of the village of Nghonji while on the Tanzanian side, it is situated within Mwanga District, in Kilimanjaro Region. The lake is fed mainly by the Lumi River, which descends from Mount Kilimanjaro, as well as streams from the North Pare Mountains, being on the leeward side. The lake's outlet forms the Ruvu River. Kenya's unfenced Tsavo West National Park protects part of the lake's northern shore, while on the Tanzania side Mkomazi Game Reserve is nearby. The lake is known for its endemic fish, as well as water birds, mammals, wetland plants and lake-edge swamps, which can extend 2 kilometres (1.2 mi) from Jipe's shore.