The Kagitumba is a river on the border of Rwanda and Uganda part of the upper headwaters of the Nile. Kagitumba is the name taken by the Muvumba river for its last stretch before it empties in the Akagera River. The river is only 39 km and is located on the North Eastern extremity of Rwanda. For its entire length, it forms the border of Rwanda and Uganda. Despite its short length, this is one of the major rivers of Rwanda. Its drainage basin covers 3500 km2 and spans parts of Gicumbi, Gatsibo and Nyagatare District Districts in Rwanda, and Kabale and Ntungamo Districts in Uganda.