The hydrosphere of the Gina River catchment shows some basic characteristics which are listed briefly: 

• The Gina River drains the catchment area.
• It is a third order tributary of the Hare River which drains into Lake Abaya, a lake of the Rift Valley system.
• Several streams feed the Gina River catchment (Beck et al. 2004).
• Since 1955 the surface water distribution per capita has been declining continuously in Ethiopia (Bekele 2001).