Land,
Journal Year:
2024,
Volume and Issue:
13(2), P. 232 - 232
Published: Feb. 13, 2024
Understanding
the
contributions
of
stream
bank
and
bed
erosion
will
allow
us
to
implement
most
effective
management
practices.
The
objective
this
study
was
assess
different
methods
measure
at
scales,
specifically
watershed,
reach
plot.
Innovative
traditional
were
utilized.
At
watershed
scale,
indices
based
on
free
satellite
images
used.
For
used,
but
with
higher
accuracy
purchased
captured
by
unmanned
aerial
vehicles
(UAVs).
plot
pins,
cross-sections
laser
scanning
applied.
scale
analysis
showcased
“hot
spots”.
These
spots”
reaches
vulnerable
deposition.
applied
these
allowed
narrow
length
where
UAV
flights
took
place.
flight
located
deposition
occurred.
Finally,
provided
more
detailed
accurate
data
a
greater
compared
methods.
implementation
allows
find
areas
are
nature-based
solutions
should
be
implemented
effectively
mitigate
problems.
npj natural hazards.,
Journal Year:
2025,
Volume and Issue:
2(1)
Published: Jan. 13, 2025
Abstract
Rivers
are
often
confined
by
structures
and
subjected
to
aggregate
mining.
In
dynamic
rivers,
these
interventions
cause
changes
riverbed
bank
topography
that
potentially
in
hydraulics
flood
risk.
Repeat,
system-scale,
high-resolution
topographic
surveys
of
the
gravel-bed
Bislak
River,
Philippines,
used
quantify
annual
morphological
change
and,
using
two-dimensional
hydraulic
modelling,
simulate
Aggregate
mining
exports
sediment
creates
pitted
topography,
embankments
both
deeper
channels
disconnect
river
from
its
floodplain.
The
consequently
increased
channel
capacity
reduces
risk,
with
up
a
5%
decrease
inundated
areas
for
10-
100-year
return
periods.
Sediment
deprivation
also
increases
bed
shear
stress
can
induce
scour,
infrastructure
damage
impacts.
Rising
global
floodplain
populations
increasing
demand
ensure
sustainably
managing
geomorphologically
rivers
support
development
mitigate
impacts
remains
pertinent
challenge.
Abstract
Our
aim
is
to
recreate
the
distinct
patterns
observed
in
gravel-bed
river
channels
for
studies
involving
physical
modeling
by
designing
a
morphological
configuration
and
investigating
bed
resistance.
We
used
10x0.56x0.4m
experimental
channel
that
scaled-down
natural
at
ratio
of
1:20,
utilizing
sand
as
material.
Employing
both
field
data
measuring
instruments
such
laser
profiler
pitot
tube,
we
conducted
total
12
tests
spanning
27
hours.
In
initial
15-hour
phase,
closely
monitored
deformations
sediment
transport
under
various
flow
rates.
Subsequently,
adjusted
rates
proceeded
with
testing.
The
results
indicated
larger
diameter
movable
led
increased
resistance,
evident
parameters
like
n,
f,
C.
Additionally,
deposition
fines
within
intergrain
voids
noted
an
increase
ks
reduced
discharge
volume,
illustrating
influence
on
dynamics
transport.
Furthermore,
this
preliminary
study
provides
valuable
insights
into
processes
governing
water
transport,
which
are
crucial
considerations
future
simulation
studies.
Journal of Flood Risk Management,
Journal Year:
2025,
Volume and Issue:
18(1)
Published: March 1, 2025
ABSTRACT
Flood
hazards
pose
a
significant
threat
to
communities
and
ecosystems
alike.
Triggered
by
various
factors
such
as
heavy
rainfall,
storm
surges,
or
rapid
snowmelt,
floods
can
wreak
havoc
inundating
low‐lying
areas
overwhelming
infrastructure
systems.
Understanding
the
feedback
between
local
geomorphology
sediment
transport
dynamics
in
terms
of
extent
evolution
flood‐related
damage
is
necessary
build
system‐level
description
flood
hazard.
In
this
research,
we
present
multispectral
imagery‐based
approach
broadly
map
classes
how
their
spatial
relocation
be
monitored.
The
methodology
developed
tested
using
data
collected
Ahr
Valley
Germany
during
post‐disaster
reconnaissance
July
2021
Western
European
flooding.
Using
uncrewed
aerial
vehicle‐borne
imagery
calibrated
with
laboratory‐based
soil
characterization,
illustrate
fine
coarse‐grained
sediments
identified
mapped
interpret
behavior
events
role
regarding
impacts
on
also
applied
from
2022
flooding
Yellowstone
River,
Gardiner,
Montana,
United
States
transferability
across
environments.
Here,
show
distribution
remotely
rapidly,
facilitates
understanding
influence
flow
patterns
induce
bridge
abutment
scour.
limitations
potential
expansions
are
discussed.
Frontiers in Environmental Science,
Journal Year:
2025,
Volume and Issue:
13
Published: March 25, 2025
The
relationship
between
riverbank
erosion
and
land
use
practices
is
a
critical
issue
that
impacting
developing
developed
nations
recognized
as
significant
environmental
challenge,
with
human
activities
exacerbating
it.
In
the
same
way,
floodplain
of
Weyb
River
in
Agarfa
district
villages
southeast
Ethiopia
confronting
challenge
due
to
escalating
erosion,
posing
threat
sustainability
this
ecosystem.
findings
from
study
aim
evaluate
dynamics
inform
policymakers
stakeholders
about
need
for
sustainable
mitigate
enhance
resilience
affected
communities.
employed
mixed-methods
approach,
integrating
quantitative
qualitative
data
collection
techniques
through
field
observations,
community
surveys
land-use
cover
change
analysis,
has
uncovered
key
insights
into
complex
dynamics.
Notably,
research
identified
hotspots
such
Ambentu
villages,
Koloba
Seada,
Harogoda,
where
96.5%
respondents
recognize
drainage
congestion
along
river
necessitating
operation
sluices.
Moreover,
Analysis
reveals
intricate
interplay
revealed
causes
including
excessive
flooding
heavy
rainfall
upstream,
poor
riverbanks.
Respondents
farming
practices,
particularly
removing
vegetation
near
riverbank,
significantly
contribute
erosion.
Additionally,
92%
informants
agreed
agricultural
seedlings
rising
exacerbate
risks.
recommends
development
buffer
zones,
establishment
conservation
associations,
implementation
rehabilitation
measures,
infrastructure
development,
support
empowerment,
deployment
developmental
agents,
strengthening
adaptation
flood
hazards.
Urgent
action
crucial
safeguard
ecosystem
ensure
long-term
amid
ongoing
ecological
changes
interventions.
Hydrology,
Journal Year:
2025,
Volume and Issue:
12(4), P. 79 - 79
Published: April 1, 2025
Flood
frequencies,
along
with
the
associated
loss
of
life
and
property,
have
risen
significantly
due
to
climate
change
increasing
human
activities.
While
prior
research
has
primarily
focused
on
high-intensity
rainfall
events
reservoir
management
in
flood
management,
influence
sediment-starved
water—termed
“hungry
water”—released
from
dams
controlling
dynamics
not
gained
much
attention.
The
present
study
is
aimed
at
exploring
potential
role
water,
or
water
effect”
valley
degradation,
bed
material
changes
inundation
Pamba
River
during
Kerala
Flood,
2018,
through
a
detailed
characterization
materials
their
deposition
channel
bed.
release
Kakki
episodic
precipitation
event
(15
17
August
2018)
resulted
significant
degradation
scouring
slopes,
leading
large
boulders
rock
masses
inundating
approximately
196
km2
floodplains.
This
highlights
need
for
integrated
sediment
strategies
operations
by
providing
essential
insights
into
transport
extreme
weather
events.
Understanding
these
processes
crucial
formulating
effective
mitigation
improving
resilience
riverine
ecosystems,
particularly
as
interaction
between
intense
sediment-depleted
releases
exacerbated
flood’s
severity.
