The Rwaba River forms in the northwest of Makamba Province to the north of Murinda and flows south, then southwest to enter Lake Tanganyika just north of Nyanza Lac.[1]
The Rwaba River drains the sedimentary plain of Nyanza-Lac, which is about 16 kilometres (9.9 mi) wide and backed by high ground.[2]
Open forests on the steep slopes around the plain form a natural water catchment system, and prevent sedimentation of the river and damage from landslides.[3]
The river is fed by springs on the slopes or at the foot of the slopes.[4]
Environment
The surroundings of the Rwaba River are a mosaic of agricultural land and natural vegetation.[5]
The area is quite densely populated, with 214 inhabitants per square kilometer as of 2016.[6]
Savannah climate prevails in the area.
The average annual temperature in the area is 21 °C (70 °F).
The warmest month is September, when the average temperature is 25 °C (77 °F), and the coldest is November, with 19 °C (66 °F).[7]
Average annual rainfall is 1,137 millimetres (44.8 in).
The wettest month is December, with an average of 199 millimetres (7.8 in) of precipitation, and the driest is July, with 1 millimetre (0.039 in) of precipitation.[8]
NASA Earth Observations Data Set Index, NASA, archived from the original on 11 May 2020, retrieved 30 January 2016 Temperature data from satellite measurements of the earth's surface temperature within a box that is 0.1 x 0.1 degrees.
