The main north-south ridge of Kusum Kanguru forms the border between the Dudh Khosi to the west and the Hinku Valley to the east. The mountain is the main source of the Kusum Khola (or Thado Koshi Khola) which flows westward to merge into the Dudh Khosi at the village of Thado Koshi. Kusum Kanguru is one of the first high snowy mountains that is seen when trekking from Jiri to Mount Everest base camp.