Applied geomorphology and arid regions
479
Figure 19.15. The flood hazard map of Suez, Egypt (Halcrow and Partners, Unpub. data; in Cooke
et al., 1982).
the propagation of the flow and, because they are impermeable, prevent the loss of water
(Rantz, 1970).
Perhaps the most important problem in determining the risks associated with these fans
are that they remain dry for long periods of time. In southern California, for example, the