Example Flood Risk Report

HAZUS estimated loss data can be
used in many ways to support local
decision making and explaining
flood risk. For mitigation planning
purposes, loss data can be used to
help meet requirements to develop
loss information for the hazard of
flood. Also, the FRM can show
where flood risk varies by
geographic location. For
emergency management, HAZUS
data can help forecast losses
based on predicted events and the
assignment of resources can be
made accordingly. Loss
information can support floodplain
management efforts, including
those to adopt higher regulatory
standards. Also, awareness of
exposed essential facilities and
infrastructure encourages
mitigation actions to protect
citizens from service disruption
should flooding occur.
HAZUS estimated loss data is
summarized in the FRR and on the
FRM, and stored in the FRD.
Allows analysis refinement though updating inventory data, and integrating
data produced using other flood models
Widely available support documents and networks (HAZUS Users Groups or
HUGs)
Files from the FRD can be imported into HAZUS-MH to develop other risk
assessment information including:
Debris generated after a flood event
Dollar exposure of the agricultural products in a study region
Exposure of the utility systems in the region
Exposure of vehicles in the study region
Damages and functionality of lifelines such as highway and rail bridges,
potable water, and wastewater facilities
The FRR primarily uses specific flood risk analysis methods which are
summarized below:
Scenario Loss Estimates: Scenario losses have been generated by HAZUS for
four events: 10%, 2%, 1% and 0.2%. In the FRR, these losses are expressed in
dollar amounts and are provided for the project study area only, even though
results are shown watershed wide and at the local jurisdiction level.
Loss estimates are based on best available data, and the methodologies applied
result in an approximation of risk. These estimates should be used to
understand relative risk from flood and potential losses. Uncertainties are
inherent in any loss estimation methodology, arising in part from
approximations and simplifications that are necessary for a comprehensive
analysis (e.g., incomplete inventories, demographics, or economic parameters).
Flood loss estimates are being provided at the project and at the community
level for multiple flood frequencies including:
Residential Asset Loss – These include direct building losses (estimated costs
to repair or replace the damage caused to the building) for all classes of
residential structures including single family, multi-family, manufactured
housing, group housing, and nursing homes. This value also includes
content losses.
Commercial Asset Loss – These include direct building losses for all classes
of commercial buildings including retail, wholesale, repair, professional
services, banks, hospitals, entertainment, and parking facilities. This value
also includes content and inventory losses.
Other Asset Loss – This includes losses for facilities categorized as industrial,
agricultural, religious, government, and educational . This value also
includes content and inventory losses.
DRAFT – WATERSHED USA FLOOD RISK REPORT 11