The river rises to the east of Muramba and flows south to Bubanza, running west past the north of that city.

In May 2006 torrential rains caused the Kajeke River to overflow again, resulting in damaging floods, particularly in the Commune of Gihanga.

[6] In December 2021 the President of the National Platform for Risk Prevention and Disaster Management visited the site where the Kajeke riverbed was being redeveloped in Gihanga Commune by Oxfam with European Union funding.

[7] In May 2022 the Kajeke River, which had been diverted from its main bed by rice farmers, flooded 118 houses in Gihanga.

Traffic was disrupted on the Bujumbura–Cibitoke road, and large areas of rice fields were flooded, with the crops washed away.

[9] In November 2015 Joseph Butore, Second Vice-President of Burundi, visited the dam site with the ministers of Agriculture, Good Governance and Environment.