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

presented in the updated Flood Events Inventory is considered as complete and as correct as
possible in the context of Project objectives.
Analysis of the updated Flood Events Inventory yielded the following comments:
Damages
Of the 650 records in the Flood Events Inventory, 53 records have damage estimates,
abstracted from source documents used to update the inventory, totaling about $252
million (normalized to 2011).
Of the 650 records in the Flood Events Inventory, 11 records have damage estimates,
based on DFAA reporting, totaling about $180 million (normalized to 2011).
Damage estimates range from a few thousand dollars to over $100 million associated
with Hurricane Igor in 2010.
Eighteen (18) flood events in the inventory have documented damages of $1 million or
more (damage estimates based on source literature review).
All DFAA damage estimates are greater than $1 million.
The average annual flood damages are estimated to be about $8.1 million over the
period (1955-2010) represented by data records with damage information sourced from
the background review.
The average annual flood damages are estimated to be about $22.5 million over the
period (2000-2010) represented by data records with damage information sourced DFAA
reporting.
Fall and winter floods generally produce damages with the greatest dollar value.
Annual Flooding
Over the entire inventory period (i.e., 1950 through 2011) a total of 650 flood events are
documented, averaging about 10 flood events per year.
The years 1998 through 2011 are considered complete in terms of documentation of
known storm events and during this period a total of 102 storm events are documented
in the inventory for an average occurrence of about 7 per year.
The Eastern and Western regions have more documented storm events than the Central
region with a total of 148, 91, 29 events documented in the inventory, respectively.
Flooding in Labrador is extremely rare with only one documented flood event in the
current inventory.
Storms by Season and Month
Over the entire inventory period (i.e., 1950 through 2011) a total of 269 storm events are
documented, averaging about 4 storm events per year.
Over the entire inventory, January and February are the months with the highest
occurrence of storm events.
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