Table 1: Ranges for Vulnerability Ranking of Variables on the Gulf of Mexico Coast.

   Variables Very Low
1
Low
2
Moderate
3
High
4
Very High
5
GEOMORPHOLOGY Rocky cliffed coasts, Fjords Medium cliffs, Indented coasts Low cliffs, Glacial drift, Alluvial plains Cobble Beaches, Estuary, Lagoon Barrier beaches, Sand beaches, Salt marsh, Mud flats, Deltas, Mangrove, Coral reefs
SHORELINE EROSION/ACCRETION (m/yr) > 2.0 1.0 - 2.0
-1.0 - 1.0
-2.0 - -1.0
< -2.0
COASTAL SLOPE (%) > 1.20 1.20 - 0.90
0.90 - 0.60
0.60 - 0.30
< 0.30
RELATIVE SEA-LEVEL CHANGE (mm/yr) < 1.8
1.8 - 2.5
2.5 - 3.0
3.0 - 3.4
> 3.4
MEAN WAVE HEIGHT (m) < 0.55
0.55 - 0.85
0.85 - 1.05
1.05 - 1.25
> 1.25
MEAN TIDE RANGE (m) > 6.0
4.0 - 6.0
2.0 - 4.0
1.0 - 2.0
< 1.0