Journal of Water Resources and Ocean Science,
Journal Year:
2024,
Volume and Issue:
13(6), P. 136 - 157
Published: Dec. 30, 2024
The
location,
design,
drilling
and
completion
of
wells
for
potable
groundwater
abstraction
require
exploration
mapping
potential
zones
within
the
geologic
framework
any
region.
In
this
study,
field
data
acquisition
involved
seven
vertical
electrical
sounding
three
horizontal
resistivity
profiling
(HRP)
carried
out.
Field
were
interpreted
using
IPI2win
1-D
software
while
subsurface
lithologic
layering
correlation
was
realized
in
rockworks
v
22.
Modelled
true
geolectric
sections
after
curve
matching
revealed
study
area
to
be
underlain
predominantly
by
clayey
units
followed
coarse
grained
sands
with
silty
fine
minor
fraction.
Total
investigation
depth
range
between
314.0m
510.0m
fresh
water
found
occur
at
a
168m
VES
L2,
430m
L3
154m
L6
locations.
Iron
some
interval
129
m
314
L1
iron
saturated
occurs
73.20
206
L2.
At
L3,
131
430m.
Boreholes
should
drilled
screened
from
131m
L3.
L4,
overlying
50.20
422m.
L6,
sandy
aquifer
114
154m.
Although
provides
most
suitable
prospective
locations
depths
modelling
that
both
are
either
juxtaposed
or
interfingered
shallow,
intermediate
deeper
depths,
hence,
there
is
strong
inter-mixing
during
pumping.
All
twenty
proposed
boreholes
recommended
not
pumped
rates
exceeding
3,500
l/min.
450m
apart
prevent
well
interferences
pumping
schedule
10
14
daily
will
greatly
reduce
stresses
on
as
risk
saline
intrusion.
Three
encroachment
monitoring
sited
1.5km
L2
2.4km
L7
respectively
East,
West
Southern
plant
area.
Water,
Journal Year:
2025,
Volume and Issue:
17(9), P. 1356 - 1356
Published: April 30, 2025
Groundwater
is
a
vital
resource
in
arid
and
semi-arid
regions,
such
as
Ethiopia’s
Jimma
Borena
zones,
where
surface
water
availability
limited.
This
study
employs
Geographic
Information
Systems
(GIS),
Remote
Sensing
(RS),
the
Analytical
Hierarchy
Process
(AHP)
to
delineate
groundwater
potential
zones.
Key
hydrogeological
parameters,
including
lithology,
slope,
land
use/land
cover,
drainage
density,
recharge,
were
analyzed
weighted
using
AHP
generate
suitability
maps.
The
findings
indicate
that
Jimma,
4.6%
of
area
highly
suitable
for
development,
24%
moderately
suitable,
70%
has
low
suitability.
In
Borena,
6.2%
42.6%
51.1%
exhibits
due
topographic
geological
constraints.
Validation
borehole
data
confirms
model’s
reliability,
demonstrating
strong
agreement
with
observed
yields.
These
results
provide
cost-effective
approach
exploration
highlight
necessity
geophysical
surveys
complex
terrains
enhance
mapping
accuracy.
offers
valuable
insights
planners
policymakers,
supporting
sustainable
management
strategies
region.
Water Practice & Technology,
Journal Year:
2024,
Volume and Issue:
19(7), P. 2774 - 2798
Published: July 1, 2024
ABSTRACT
This
study
aims
to
identify
groundwater
potential
zones
(GWPZs)
utilizing
multi-influencing
factor,
geographical
information
system
(GIS)-based
analytical
hierarchy
processes
(AHPs),
and
remote
sensing
in
the
Gorezen
watershed,
Ethiopia.
Weighted
overlay
analysis
was
used
this
integrate
nine
thematic
layers.
The
watershed
is
primarily
covered
by
regions
with
roughly
low
potential,
according
results,
which
were
linked
kinds
of
geology
geomorphological
settings.
Receiver
operating
characteristic
curves
samples
observed
well-yielded
data
validate
GWPZ
map.
Additionally,
field
observations
confirmed
that
a
high
degree
agreement
obtained.
cross-validation
results
show
AHP
lot
more
successful
approach
(accuracy
0.87)
for
obtaining
maps.
Thus,
it
acceptable
GWPZs
integrated
methodologies
combine
two
multi-criteria
decision
techniques
aid
GIS
environment.
Research Square (Research Square),
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 21, 2024
Abstract
Integration
of
remote
sensing
and
geographical
information
systems
(GIS)
is
crucial
in
groundwater
resource
management,
particularly
regions
like
the
Okavango
Delta
Northern
Botswana,
characterized
by
erratic
rainfall
ranging
annually
spatially
from
300
to
600
millimetres.
This
variability,
coupled
with
occasional
droughts,
poses
significant
risks
water
resources,
agriculture,
livelihoods.
To
tackle
these
challenges,
this
study
employed
GIS
techniques
delineate
potential
zones
(GWPZs)
lower
Delta.
The
Analytical
Hierarchy
Process
(AHP)
was
utilized
analyse
eight
thematic
factors—geology,
rainfall,
slope,
lineament
density,
soil,
drainage
density
land
use,
cover—and
integrate
them
into
zone
map.
identified
five
distinct
GWPZs:
very
poor
(2.8%),
(44.5%),
moderate
(45.0%),
good
(7.6%),
(0.1%),
indicating
varying
degrees
availability
suitability
for
sustainable
use.
Integrating
map
broader
management
plans
recommended
promote
practices.
Additionally,
enhancing
climate
resilience
through
cross-sectoral
collaboration
stakeholder
engagement
crucial.
These
efforts
are
necessary
developing
integrated
strategies
address
planning
adapt
change
impacts,
fostering
development
water-stressed
regions.
Journal of Water Resources and Ocean Science,
Journal Year:
2024,
Volume and Issue:
13(6), P. 136 - 157
Published: Dec. 30, 2024
The
location,
design,
drilling
and
completion
of
wells
for
potable
groundwater
abstraction
require
exploration
mapping
potential
zones
within
the
geologic
framework
any
region.
In
this
study,
field
data
acquisition
involved
seven
vertical
electrical
sounding
three
horizontal
resistivity
profiling
(HRP)
carried
out.
Field
were
interpreted
using
IPI2win
1-D
software
while
subsurface
lithologic
layering
correlation
was
realized
in
rockworks
v
22.
Modelled
true
geolectric
sections
after
curve
matching
revealed
study
area
to
be
underlain
predominantly
by
clayey
units
followed
coarse
grained
sands
with
silty
fine
minor
fraction.
Total
investigation
depth
range
between
314.0m
510.0m
fresh
water
found
occur
at
a
168m
VES
L2,
430m
L3
154m
L6
locations.
Iron
some
interval
129
m
314
L1
iron
saturated
occurs
73.20
206
L2.
At
L3,
131
430m.
Boreholes
should
drilled
screened
from
131m
L3.
L4,
overlying
50.20
422m.
L6,
sandy
aquifer
114
154m.
Although
provides
most
suitable
prospective
locations
depths
modelling
that
both
are
either
juxtaposed
or
interfingered
shallow,
intermediate
deeper
depths,
hence,
there
is
strong
inter-mixing
during
pumping.
All
twenty
proposed
boreholes
recommended
not
pumped
rates
exceeding
3,500
l/min.
450m
apart
prevent
well
interferences
pumping
schedule
10
14
daily
will
greatly
reduce
stresses
on
as
risk
saline
intrusion.
Three
encroachment
monitoring
sited
1.5km
L2
2.4km
L7
respectively
East,
West
Southern
plant
area.