Table 3. Average values of the Manning number n estimated using the methodology of Arcement and Schneider (1989).

Lagoon, fluvial plain

0.01–0.015

Mediterranean vegetation

0.016–0.025

Farm area

0.026–0.035

Discontinuous dune belts (without vegetation)

0.036–0.040

Dune belts (Altitude = 3 m)

0.041–0.046

Rocky coasts (very karstifyed)

0.047–0.052

Urban area discontinuous

0.053–0.058

Urban area (with buildings very concentrated)

0.059–0.064

Mangrooves

0.065–0.069

Forests, Pinewood, etc.

≥0.07