[2] Tributaries of the Nyabusyo include the Gashayura, Nyankezi and Tambi / Rusimbuko.

[3] The area is densely populated, with 331 inhabitants per square kilometer as of 2016.

The warmest month is September, when the average temperature is 22 °C (72 °F), and the coldest is April, with 18 °C (64 °F).

[6] There is a 325 hectares (800 acres) unmanaged marsh on the Nyabusyo in the Commune of Tangara, Ngozi Province.

[7] 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.