Water,
Journal Year:
2024,
Volume and Issue:
16(11), P. 1563 - 1563
Published: May 29, 2024
In
the
1D–2D
coupled
simulation
of
urban
waterlogging,
calculation
process
vertical
flow
exchange
is
independent
from
1D
hydraulic
calculation,
resulting
in
a
failure
to
consider
node
head
and
pipe
during
which
may
lead
irrational
results
further
affect
stability
model
calculation.
However,
setting
an
upper
limit
for
introduce
excessive
subjective
factors
into
process.
this
study,
method
based
on
water
balance
nodes
proposed.
When
overloaded
state,
at
integrated
process,
thus
taking
consideration
influence
when
calculating
exchange.
Additionally,
iterative
solution
used
ensures
numerical
harmony
between
exchange,
flow,
ensuring
For
non-overloaded
nodes,
was
conducted
using
variable-head
orifice
discharge
formula,
enabling
changes
surface
depth
backflow.
Using
InfoWorks
ICM
as
benchmark,
comparative
analysis
case
demonstrated
that
improved
able
accurately
stably
simulate
with
method,
gave
closely
matched
those
benchmark
model.
Water Resources Research,
Journal Year:
2025,
Volume and Issue:
61(3)
Published: March 1, 2025
Abstract
The
tidal
jacking
effect
is
a
crucial
factor
exacerbating
waterlogging
in
coastal
cities,
but
its
mechanism
complex
and
difficult
to
quantify.
In
this
study,
comprehensive
framework
established
explore
how
exacerbates
waterlogging.
includes
three
components:
hydrodynamic
simulations
of
urban
combing
rainfall
tide
levels,
analysis
the
drainage
system
reveal
impedes
water
flow
waterlogging,
quantification
changes
flooded
buildings
assess
impact
hazards.
Taking
Liede
River
Basin
Guangzhou,
China,
as
case
results
show
that
levels
intensify
through
series
cascading
processes:
outfalls,
impeded
pipeline
drainage,
pipe
overflow,
eventually
surface
When
encounters
jacking,
number
duration
jacked
outfalls
increase,
extending
full
pipes.
This
leads
9%–43%
increase
overflow
4%–27%
expansion
area.
exceeds
under
jacking.
Tidal
proportion
areas
with
different
risk
concentrating
higher
downstream.
also
causes
differential
losses
among
building
types.
study
provides
essential
insights
into
level
offers
evidence
for
mitigating
Journal of Hydrology,
Journal Year:
2024,
Volume and Issue:
634, P. 131113 - 131113
Published: March 26, 2024
As
floods
are
a
major
and
growing
source
of
risk
in
urban
areas,
there
is
necessity
to
improve
flood
management
frameworks
civil
protection
through
planning
interventions
that
modify
surface
flow
pathways
introduce
storage.
Despite
the
complexity
densely
urbanised
areas
(topography,
buildings,
green
spaces,
roads),
modern
models
can
represent
features
characteristics
order
help
researchers,
local
authorities,
insurance
companies
develop
efficient
achieve
resilience
cities.
A
cost-benefit
driven
'source-receptor'
framework
developed
this
study
identify
(1)
locations
contributing
flooding
(sources),
(2)
buildings
at
high
(receptors),
(3)
nexus
between
'source'
'receptor',
finally
(4)
ways
mitigate
'receptor'
by
adding
Blue-Green
Infrastructure
(BGI)
critical
locations.
The
analysis
based
on
five
steps
area
exposure
damages
arising
from
available
spaces
with
best
potential
add
sustainable
resilient
solutions
reduce
flooding.
was
using
detailed
hydrodynamic
model
CityCAT
case
city
centre
Newcastle
upon
Tyne,
UK.
novelty
firstly,
multiple
storm
magnitudes
(i.e.
small
large
floods)
used
combined
method
locate
prioritized
set
places
upstream
downstream.
Secondly,
decisions
informed
considering
benefit
reduced
properties
cost
construct
BGI
options
rather
than
restricted
hydraulic
only
depths
storages
isolation
real
world
economics.
Water,
Journal Year:
2024,
Volume and Issue:
16(5), P. 693 - 693
Published: Feb. 27, 2024
With
the
acceleration
of
urbanization
and
impact
climate
change,
frequent
occurrence
urban
waterlogging
not
only
leads
to
road
closures
traffic
congestion
but
also
severely
affects
timeliness
emergency
rescue.
To
accurately
assess
enhance
response
capability
rescue
under
storm-induced
scenarios,
a
hydrodynamic
model
was
developed
simulate
conditions
various
design
rainfall
scenarios.
By
identifying
risks
blocked
roads,
as
well
combining
Two-Step
Floating
Catchment
Area
(2SFCA)
method,
accessibility
services
for
points
interest
(POIs)
with
different
vulnerabilities
evaluated.
The
Liwan
District
Guangzhou
City
selected
case
study
assessment
improvement
simulation.
results
indicate
that
increase
in
return
period
rainfall,
both
area
depth
waterlogged
regions
increased
number
roads
affected
by
rose,
leading
an
length
from
11
km
49
km,
over
300%.
Additionally,
POIs
inaccessible
increased,
while
accessible
decreased,
resulting
significant
downward
trend
overall
accessibility.
deploying
mobile
pumping
vehicles,
periods
were
reduced
10%,
decreased
more
than
12%.
findings
highlight
hinders
flow
reduces
services.
Through
strategic
deployment
can
be
effectively
improved,
mitigating
on
functions
public
safety.
Water,
Journal Year:
2025,
Volume and Issue:
17(7), P. 964 - 964
Published: March 26, 2025
Under
the
context
of
global
climate
change,
floods
are
one
major
challenges
facing
urban
development.
Based
on
resilience
theory,
this
study
proposed
an
evaluation
method
to
accurately
assess
flooding
prevention
and
control
systems
(FPCs),
integrating
both
attribute
(AR)
functional
(FR).
First,
organized
FPC
attributes
from
perspective
waterlogging
generation
elimination
processes
using
foundational
data
area,
it
established
a
indicator
system.
The
Entropy
Weight
Method
(EWM)
was
applied
calculate
weights,
Technique
for
Order
Preference
by
Similarity
Ideal
Solution
(TOPSIS)
used
values,
ultimately
deriving
(AR).
Subsequently,
performance
during
actual
operations
evaluated
scenario
simulation
based
hydrodynamic
model
results,
FR
determined.
Finally,
spatial
correlation
analysis
AR
conducted
identify
areas
with
weak
resilience.
This
developed
that
considers
system
central
area
Beijing
as
case
flood
results
indicated
most
influential
factors
affecting
green
space
percentage
(GSP),
average
slope,
drainage
capacity
(DC),
their
weights
calculated
0.17,
0.137,
0.205,
respectively.
Among
resistance,
absorption,
recovery,
absorption
had
greatest
influence,
weight
0.447.
Moran’s
I
indices
were
0.66
0.49,
respectively,
indicating
clustering,
although
clustering
locations
differed.
There
between
FR,
enabling
more
precise
identification
high
low
However,
trends
not
entirely
consistent
across
different
types
sub-districts
due
differences
in
methods
influence
various
indicators.
