Abstract
The aim of this study is the hypsometrical characterization of hillside reservoir catchments in the semiarid region of Tunisia. In this study 24 small hillside catchments were chosen. Their digital elevation models and stream networks were prepared. The hypsometric curves were obtained for all the catchments and hypsometric integrals were computed to compare the watersheds morphology.
Findings have shown that hypsometric curves of those watersheds can be classified into five groups. The most eroded watersheds have concave hypsometric curves with small hypsometric integral. At the contrary, the second group of catchments has convex hypsometric curves and higher hypsometric integrals. The third, fourth and fifth group are S-Shaped. However they differ by the shape of their toes.
