| Nyabusyo River | |
|---|---|
  Location within Burundi | |
| Native name | Rivière Nyabusyo (French) |
| Location | |
| Country | Burundi |
| Physical characteristics | |
| Mouth | |
• location | Nyakagezi River |
• coordinates | 3°03′33″S 29°56′22″E / 3.059138°S 29.939429°E |
The Nyabusyo River (French: Rivière Nyabusyo) is a river in Burundi, a tributary of the Kinyankuru River.
The Nyabusyo flows southwest along the border between Ngozi Province and Karuzi Province to join the Kinyankuru River from the left. The Kinyankuru is in turn a tributary of the Ruvubu River. Tributaries of the Nyabusyo include the Gashayura, Nyankezi and Tambi / Rusimbuko.
The surroundings of Nyabusyo are a mosaic of farmland and natural vegetation. The area is densely populated, with 331 inhabitants per square kilometer as of 2016. The average annual temperature in the area is 20 °C (68 °F). The warmest month is September, when the average temperature is 22 °C (72 °F), and the coldest is April, with 18 °C (64 °F). Average annual rainfall is 1,149 millimetres (45.2 in). The wettest month is December, with an average of 175 millimetres (6.9 in) of precipitation, and the driest is July, with 1 millimetre (0.039 in) of precipitation.
There is a 325 hectares (800 acres) unmanaged marsh on the Nyabusyo in the Commune of Tangara, Ngozi Province. In Karuzi Province there is a 121 hectares (300 acres) unmanaged marsh on the Nyabusyo in the Commune of Bugenyuzi, and a 60 hectares (150 acres) unmanaged marsh on the Nyabusyo in the Commune of Gitaramuka.