Environmental Engineering Reference
In-Depth Information
Table 13.1
Essential and desirable data requirements for integrated assessment of flooding
Data type
Description
Purpose
Supplier
Essential
Evidence of current
Data collected from interviews with
ood victims
including details of: causes (sources, pathways) and
impacts (pathways and receptors); nature, extent,
depth, duration and cost of
Establish priorities
WSP/LA/EA/ES/Ins
ooding
Assessment of tangible and intangible costs of
ooding
Verify integrated drainage models.
ooding; number of
deaths; number and ages of occupants affected;
injuries, illness and impacts on personal
circumstances; losses to businesses and employees.
The cost and bene
t of detailed surveying of pathways
and receptors (over and above DEM/DTM data) to be
established.
Permanent autographic
raingauge data
Availability of data. Assessment of cost and bene
tof
Identi
cation of rainfall return periods resulting in
ooding
WSP/EA/MO
obtaining additional autographic data
Validation of integrated drainage models
Sewer system data
review
Assessment of total length of sewer systems
General description of sewerage systems within
catchment
WSP
Assessment of percentage availability of essential data
(function, shape, size, material, cover levels and
depths) for sewer system
Sewer system model
review
Assessment of existence and quality of sewer system
model including level of detail around current
problems and identi
ed future developments
Assessment of availability and
tness for purpose of
sewer system model
WSP
Assessment of potential for and cost of enhancement of
sewer system models as basis for integrated minor/
major system model
Assessment of percentage availability of essential data
(function, shape, size, material, cover levels and depths
for modelled network)
Assessment of percentage availability of data on
structural and service condition in modelled network
Assessment of cost and bene
t of collecting additional
data
DTM/DEM data review
Availability and type of DTM/DEM data. Assessment of
cost and bene
Modelling of surface pathways and receptors. De
ning
WSP/LA/EA
t of collecting additional data
pitched and
at roofs for runoff model
De
ning connected areas for the runoff model
(continued)
