The Gina River catchment shows several distinct morphological characteristics (see figure):
- East of the Gina river two large morphological units occur: the northern part has steep slopes up to the divide with incised v-shaped valleys. The southern part (central-east) is more gently sloped.
- West of the Gina river two large units can be distinguished: The north-western part is gently sloped with increasing inclination up to the divide. In the central-western part the catchment area is gently sloped, and steep inclines are found only along the v-shaped valleys of the Gina river and its tributaries.
- The south-eastern part of the catchment area has lower altitudes and is gently sloped (Beck et al. 2004).
Figure Regions of the Gina River catchment in Ethiopia;
adopted from Beck et al. 2004, 28.