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

communities ( Gillams, Hughes Brook, etc.) designation as a Riverine Hazard community, its
coastal/riverine status, and its elevation. All of these 12 individual Location Priority Factors were
then averaged to yield 0.67, the Location Priority Factor for the entire Sub-region.
Sub-region
Location
Priority Factor
Watershed Characteristics
Soil Group
Priority Factor
Average Slope
Priority Factor
Drainage
Density
Priority Factor
West-CB 0.67 1.50 2.00 0.00
West-1 0.46 0.93 0.51 0.55
West-2 0.81 1.10 1.71 0.10
West-3 0.58 0.58 1.45 0.00
West-4 0.31 1.00 1.38 0.15
Central-1 0.33 0.53 0.92 0.69
Central-2 2.00 0.92 0.42 0.92
Central-3 0.36 1.00 0.93 0.93
East-1 0.45 0.95 1.24 0.38
East-2 0.68 0.28 0.88 0.78
East-SJ 0.57 0.00 0.50 1.00
Table 6-1. Sub-region Watershed Characteristics
The above table indicates that those Sub-regions consisting of inland communities (West-2,
Central-2) have a higher Location Priority Factor than Sub-regions comprised of coastal
communities, which is likely due to the general siting of communities within those Sub-region in
relatively close proximity to stream and river networks. Communities within Sub-regions in the
western part of the island tend to have a higher soil group priority factor, due to the higher
presence of runoff producing soil types. See Figure 6-3, soil map of Newfoundland interpreted
as hydrological soil groups. Communities within western Sub-regions have the highest average
slope priority factor, due to steeper terrain, as compared to the rest of the island. Communities
in the Central Sub-regions, with the exception of East-SJ, tend to have the highest drainage
density priority factor, due to the relative abundance of surface water systems.
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