Flood Risk and Vulnerability Analysis Project - Atlantic Climate ...

terrestrial flooding of significant extent and frequency might be classified as a 1 (moderate) or 2
(high) Physical Hazard, whereas a watershed that experiences floods resulting from terrestrial
flooding where ice has exacerbated the impacts, and that also experiences storm surge from
Hurricanes, would be classified as 3 (extreme). Guidelines for the classifications are as follows:
Weighting Description
0 Relatively few instances of flooding
1 Moderately lower frequency events from one source
2 Moderately higher frequency events from one or two sources
3 Community exposed to multiple sources of flooding with relatively frequent
recurrence
Table 5-7. Physical Hazard Weighting
5.5.3 Community Vulnerability to Direct Impacts of Flooding
Once the spatial data was accumulated and incorporated into a GIS, the vulnerability of each of
the communities was assessed (Table 5-8).
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