The Gina River catchment is located in Ethiopia, an East African country (see map). It lies in the southern part of Ethiopia, approximately 500 km south of the capital Addis Ababa.
The Gina River catchment is located in the transition zone between the floor of the Great Rift Valley and the graben shoulders. This graben structure has developed as a result of rifting and uplift processes. Large upland areas occur on the graben shoulders, while on the graben flanks an endorheic drainage system is fed by tributaries from the eaves of the graben shoulders. Between these two upland areas lies the Great Rift Valley, containing several lakes.
The Gina River is one of the tributaries of the Hare River (third order) which drains into Lake Abaya, a lake of the Rift Valley system. Thus, Gina River catchment is a part of the Rift Valley Lake basin (Beck et al. 2004).