detailed landslide and flood hazard map of buenavista, agusan del

125°25'0"E
DETAILED LANDSLIDE AND FLOOD HAZARD MAP OF
BUENAVISTA, AGUSAN DEL NORTE, PHILIPPINES
4018-I-19 SANGAY QUADRANGLE
ASIPIT
4018-I-13
4018-I-15
4018-I-14
8°50'0"N
4018-I-18
BUENAVISTA
125°26'0"E
125°30'0"E
BUTUAN CITY (Capital)
4018-I-19
4018-I-20
4018-I-24
4018-I-25
125°27'0"E
4018-I-23
8°51'0"N
125°25'0"E
8°51'0"N
125°24'0"E
M A P :
8°50'0"N
I N D E X
Purok VII
(Lower Olave)
#
n
LAS NIEVES
Upper Olave Elementary School
(Lower Olave)
Purok III
(Lower Olave)
Purok IX
(Lower Olave)
#
0
#
μ
125°25'0"E
0.5
1
2
Kilometers
L E G E N D :
POBLACION
Main road
!
P
So. Magaling
(Poblacion)
#
Purok/Sitio location (Barangay)
Track; trail
n
School
River
®
v
Hospital
Municipal boundary
G
Church
Secondary road
Proposed relocation site
Contour (meter)
80
Purok IV
(Lower Olave)
Barangay center location
8°50'0"N
8°50'0"N
#
Landslide
Very high landslide susceptibility
Purok VI
(Lower Olave)
Areas usually with steep to very steep slopes and underlain by
weak materials. Recent landslides, escarpments and tension
cracks are present. Human initiated effects could be an
aggravating factor.
#
High landslide susceptibility
Purok II
(Lower Olave)
#
P
Areas usually with steep to very steep slopes and underlain by
weak materials. Areas with numerous old/inactive landslides.
Purok I
(Lower Olave)
#
Moderate landslide susceptibility
Areas with moderately steep slopes. Soil creep and other
indications of possible landslide occurrence are present.
Low landslide susceptibility
Gently sloping areas with no identified landslide.
Debris flow / Possible accumulation zone
Areas that could be affected by landslide debris.
Active landslide
Purok V
(Lower Olave)
>
>
D
>
Creep
#
Inactive landslide
Tension crack
Landslide area with mitigating measure
8°49'0"N
8°49'0"N
District I
(Simbalan)
District II
#
(Simbalan)P
Simbalan National High School District XIX
#
(Simbalan)
(Simbalan)
n #
/
/
/
H
H
H
Gully
Riverbank erosion
Rock fall/Rock slide prone area
Old landslide deposits
Recent landslide deposits
Areas susceptible to ground subsidence/sinkhole development
Flood
District III
(Simbalan)
#
Very high flood susceptibility
District IV
(Simbalan)
#
Areas likely to experience flood heights of greater than
2 meters and/or flood duration of more than 3 days.
These areas are immediately flooded during heavy rains
of several hours; include landforms of topographic lows
such as active river channels, abandoned river channels
and area along river banks; also prone to flashfloods.
High flood susceptibility
Areas likely to experience flood heights of greater than 1 up to
2 meters and/or flood duration of more than 3 days.
These areas are immediately flooded during heavy rains
of several hours; include landforms of topographic lows
such as active river channels, abandoned river channels
and area along river banks; also prone to flashfloods.
District V
(Simbalan)
#
Moderate flood susceptibility
125°24'0"E
125°25'0"E
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
MINES AND GEOSCIENCES BUREAU
North Avenue, Diliman, Quezon City
ALL RIGHTS RESERVED
PUBLISHED DECEMBER 2015
125°26'0"E
Data Sources :
MGB Geohazard Assessment Team
Lands Geological Survey Division
Geosciences Division MGB Regional Office XIII
National Mapping and Resource Information Authority
GIS Processing :
Lands Geological Survey Division
Low flood susceptibility
Areas likely to experience flood heights of 0.5 meter or less
and/or flood duration of less than 1 day. These areas include
low hills and gentle slopes. They also have sparse to
moderate drainage density.
125°27'0"E
Coordinate System :
Spheroid : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clark 1866
Projection : . . . . . . . . . . . . . . . . . . . . . . . . . . Transverse Mercator
Datum
: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Luzon 1911
Mapping scale 1:10,000
?
Direction of
rising floodwater
?
Direction of
receding floodwater
1.2
Flood depth (meter)
?
!
8°48'0"N
8°48'0"N
Areas likely to experience flood heights of greater than 0.5m up to
1 meter and/or flood duration of 1 to 3 days. These
areas are subject to widespread inundation during prolonged and
extensive heavy rainfall or extreme weather condition. Fluvial terraces,
alluvial fans, and infilled valleys are areas moderately
subjected to flooding.
%
Flashflood exit point