1. Natural resources

1.1 Topography and geology

Topography provides precise information on the surface area of the watershed feeding the river, and its altitude, which determines the flow regime. The longitudinal profile of the river is used to locate the dam and diversion structures, so as to optimize the ratio between the length of the diversion structures and the head (L/h) (see the article [C 5 555] on dams).

The topology of the slopes can be used to locate important structures. A dam is located at a rocky bolt at the outlet of a basin,...