 The administrative center for this woreda is Harbu; other towns in Kalu include Ancharo, Gerba and Degan.A highway linking Kombolcha and Afar bisects Kalu to two parts.The altitude of this woreda ranges from 800 metres above sea level in the lowlands bordering the Oromia Zone to 1,750 metres at the foot of the mountains north of Kombolcha; the climate of Kalu varies from dry sub-humid to semi-arid.