Variable Ranking of Coastal Vulnerability Very Low Low Moderate High Very High 1 2 3 4 5 a. Geology Stabilized dunes Sand dunes Recent coastal deposits Nile silt Sabkha b. Elevation >4m 2m to 3m 0 m to 1m -1m to -2m <-3m c. Coastal slope >9 degree 8 degree 6-7 degree 1–5 degree <1 degree d. Geomorphology Stabilized dunes Reclaimed dunes Sand gravels Nile silt Marsh silt and sabkha e. Shoreline change Almost null <6 m/yr. 6 to 10 m/yr. > 10 m/yr. f. Coastal protection Natural protection Constructional Unprotected g. sea-level rise Moderate values along the study area (1.8 to 3.1 mm/yr.) h. Land subsidence <1 mm/yr. 1 mm/yr. 2 mm/yr. 2–3 mm/yr. >4 mm/yr. i. Population density <5 × 104 1× 105–3× 105 4× 105–5× 105 6× 105–9× 105 >1× 106 j. Socioeconomic status Professional Technical Production Craftsmen Farmers and Fishermen

Table 1: Ranking of coastal vulnerability of different variable.