14|
14
Technical Paper Series
ARNDP – Volume II
ENVIRONMENT
PROFILE
MR. ARMANDO VALIENTE
Provincial Environment and Natural Resources Office
Contents
1.
Introduction ........................................................................................................................ 1
2.
Relevant Data and Information .......................................................................................... 2
2.1.
Climate and Rainfall .................................................................................................... 2
2.2.
Significant Sites and Protected Areas ......................................................................... 4
2.3.
Characteristics of the Study Area .............................................................................. 10
2.4.
Disaster Risk Reduction ............................................................................................. 13
2.5.
Flooding ..................................................................................................................... 13
2.6.
Rain-induced Landslide and Ground Movement ...................................................... 15
2.7.
Ground Rupture ........................................................................................................ 19
2.8.
Liquefaction ............................................................................................................... 19
2.9.
Drought ..................................................................................................................... 19
i|Environmental Profile
List of Tables
Table 1: Rainfall in Agusan del Sur from 2006 - 2010 ............................................................... 2
Table 2: List of Watershed Areas ............................................................................................... 6
Table 3: Tree Parks .................................................................................................................... 7
Table 4: Natural Significant Sites for Eco-Tourism.................................................................... 7
Table 5: Ancestral Domain ........................................................................................................ 9
Table 6: Level of Prioritization for Risk Estimate to Life on Flooding ..................................... 13
Table 7: Hazard Levels of Municipalities and Barangays ........................................................ 14
Table 8: Level of Prioritization for Risk Estimate to Life on Rain-Induced Landslide .............. 15
Table 9: Level of Prioritization for Risk Estimate to Life on Rain-Induced Landslides ............. 16
Table 10: Summary of Frequency and Occurrence ................................................................. 19
List of Figures
Figure 1: Climate Map ............................................................................................................... 3
Figure 2: Protection Map .......................................................................................................... 5
Figure 3: Hazard Map .............................................................................................................. 11
Figure 4: Flood Hazard Map .................................................................................................... 12
ii | E n v i r o n m e n t P r o f i l e
1.Introduction
E
nvironment refers to our surroundings – all living and non-living things that exist
surrounded by other things that occur naturally on earth. The components of the
environment are inextricably linked; no component exists in total isolation and
nothing can be changed without affecting something else. Consequently, the environment
cannot be assessed by simply examining its components in isolation. Instead, they must be
considered as parts of the whole. This concept is crucial in understanding the role which
humans play affecting their environment.
Road development project, if undertaken without proper understanding of the relationships
inherent in environmental functions, can cause serious disruptions to the environment from
which it may take a long time to regain equilibrium. In human terms, this may mean that
generations must function in a debilitated environment and suffer many possible associated
socio-economic hardships and financial losses. Thus, the integrity and carrying capacity of
the environment and natural resources are not to be degraded, rather conserved, protected
and enhanced in the process of any development. Environmental protection is viewed as a
shared and indivisible responsibility of all individuals, families, communities, and other
institutions to achieve environmental sustainability.
This paper presents the description of the environment of Agusan del Sur particularly its
topography and land features, soil types, climate and rainfall, identified significant sites,
and protected areas including ancestral domain and the over all characteristics of the
province.
1.2.
Objective
The main objective of this paper is to describe the updated data and information of Agusan
del Sur relative to its climate and rainfall, identified significant sites, and protected areas
including ancestral domain and the overall characteristics as well as Risk Disaster Reduction
data, which can be considered in the selection of road investment programs.
1|Environment Profile
2.Relevant Data and Information
2.1.
Climate and Rainfall
Geographically, the province is situated below the typhoon belt. But it is usually affected by
depressions forming in the typhoon prone regions of Visayas and Surigao del Norte. The
Climate Map of the Philippines is based on modified coronas classification where the
province falls under Type II.
Type II climate has no dry season but with pronounced maximum rain period that occurs
from December to January. The province has not experienced a single dry month. This
climate is generally felt in areas near the eastern coast, which are open to the northeast
monsoon.
Agusan del Sur has an average daily rainfall of 11.00434 mm for the last five years (20062010).
Table 1: Rainfall in Agusan del Sur from 2006 - 2010
Year
Ave. Daily Rainfall (mm)
2010
10.28433
2009
12.42959
2008
10.67426
2007
11.28315
2006
10.35036
Average Daily Rainfall from
2006 t0 2009 ( mm)
11.00434
Source : Patin-ay Agromet Station
2|Environment Profile
Figure 1: Climate Map
125°20'
125°30'
125°40'
125°50'
126°00'
126
126°10'
126°20'
9°20'
9°20'
LUZ ON
LEGEN D :
9°10'
#
Y
Type II (No dry sea son
with prono unced m axim um
rain p eriod )
MIN DANA O
#
Y
E
8°50'
L
DE
NO
8°50'
N
SA
GU
P ROV INCE O F A
T
R
Bayugan
#
Y
Pr osperidad
#
Y
#
Y
D EL
AO
RI G
SU
#
Y
San Luis
San Francisco
#
Y
8°20'
N
DNO
BUK I
E OF
C
IN
P ROV
Rosario
8°20'
SUR
#
Y
Talacogon
8°30'
OF
8°30'
Esperanza
E
INC
OV
PR
MIS. OR.
#
Y
8°40'
8°40'
Type IV (R ain full is more
or less evenly distrib uted
through out the year)
Sibagat
9°00'
9
9°00'
9
LO CA TIO N MA P
#
Y
La Paz
#
Y
Bunawan
#
Y
#
Y
8°00'
8
8°00'
8
Trento
#
Y
Veruela
Loreto
8°10'
8°10'
Municipa l P oints
9°10'
Provincial/ Municipa l B oun dary
VI SAYAS
Sta Josefa
#
Y
P RO VI NC E O F C OM P O ST E L A VA L LE Y
7°50'
7°50'
125°20'
125°30'
125°40'
125°50'
126
126°00'
CLIMATE MAP
10
5
0
Kilom eters
SCALE
126°10'
126°20'
SOURCE : PAGAS A
N
NOTE
10
: This map is subject to validation, users noting errors or ommi ssi on are
urged to inform the P rovi ncial Pl anning & Developm ent Offi ce - GIS Section.
The P PDO is not responsi ble for any errors or liabilities that may arise
from using the map.
Provincial De ve lo pm en t & P hysica l Fra me work P lan
LAYOUT BY :
1 : 750 ,0 00
3|Environment Profile
Provincial P lanning & Development Off ice
GIS S ection
2.2.
Significant Sites and Protected Areas
The Province of Agusan del Sur has wondrous significant sites and protected areas such as
the Agusan marsh, watersheds, tree parks, lakes and waterfalls, caves, Ancestral Domain
areas, flora and fauna resources. The Protection Map of the Province is shown in Figure 2.
4|Environment Profile
Figure 2: Protection Map
125 °1 5'1 5"
125 °2 0'2 0"
125 °2 5'2 5"
125 °3 0'3 0"
125 °3 5'3 5"
125 °4 0'4 0"
125 °4 5'4 5"
125 °5 0'5 0"
125 °5 5'5 5"
126 °1 '00 "
126 °6 '05 "
126 °1 1'1 0"
126 °1 6'1 5"
126 °2 1'2 0"
126
9° 17' 15"
9°17'15"
N
W
E
LEGEND :
MAP OF THE PHILIPPINES
S
9° 12' 10"
9°12'10"
Municipality
Barangay
Sitio
River
Y
#
LUZON
#
S
#
9°7'0 5"
9°7'0 5"
VISAYAS
Mun. Boundary
9°2'0 0"
Roads
Primary Nat'l. Rd.
Secondary Nat'l. Rd.
Provincial Rd.
Municipal Rd.
Barangay Rd.
Nia Rd.
Private Rd.
MINDANAO
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PROTECTION AREAS
Production Agricultural
Protection Buffer
Protection Forest
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S
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Ka hay ag an
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MA HA YA HA Y
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8°26'25"
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8°21'20"
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S
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8°11'10"
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#
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#
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S
S
#
S
Dag a-an
Bian
S
Upp er Lu cad
S
Mah abu
SA W A G A N La T ond ena
#
Sto . N iñ o
Yam at ic on
S
S
KA US W A G A N
#
Ba gon g S ila ng
S
Mag uimo n
#
#
#
S
#
Y
Leo
Luz vim in BIN O NG A N
S
An ton
SAioMP G U ITA
S
O. O
STO D.
. NIÑ
S
BINl UC A Y AN
Migue
#
#
TRENTO
S
S
#
Sa n M ig uel
SA N I S DR O
S
Ka way an
LA FORTU N A
Ba sa g
S
Lim ba s an
#
Mag ading
Can dav a o
Sa n Ro qu e
MA G SA Y SA Y
D un gga#
S
La S u erte
S
S
S
S
TUD E LA
#
#
S
Ila ng - Ilang
Mam pa o
S
BA S A
PA G - A S A
Maa s in
S
#
Y
#
S
#
S
#
Pu dlas an
S
CAI G AN G AN
KA P ATU NG AN
Gu in ob ata n
VERUELA
MA SA Y AN
S
Man s ung ad
Teon
Kina yon g
S
Cab us as
Pa gat pat an
8°6'0 5"
MA NA T
Maic a
S
Maito m
S
Mab uha y
Ve rg ara
S
S
7° 55' 55"
7°55'55"
P R O V I N C E
O F
C O M P O S T E L A
V A L L E Y
SOURCE :
6
0
6
PROTECTION MAP
12
K ilo m e ter s
SCALE 1 : 150,000
NOTE : This map is subject to validation users noting errors or ommission are urged to inform the
Provincial Planning and Development Office - GIS Section.
The PPDO is not responsible for any errors or liabilities that may arise from using this map.
AGUSAN DEL SUR
7° 50' 50"
3. PDPFPProtection Maps
1. PPDO RoadNetwork Map
2. Caraga RiversandCreeksMap
Layout by:Provincial Planning & Development Office
GIS Section
7°50'50"
ARC '09
126
125 °1 5'1 5"
125 °2 0'2 0"
125 °2 5'2 5"
125 °3 0'3 0"
125 °3 5'3 5"
125 °4 0'4 0"
125 °4 5'4 5"
125 °5 0'5 0"
125 °5 5'5 5"
126 °1 '00 "
5|Environment Profile
126 °6 '05 "
126 °1 1'1 0"
126 °1 6'1 5"
126 °2 1'2 0"
Table 2: List of Watershed Areas
Name of Watershed
Status
Location
Total Area
(Ha)
Andanan Watershed
Proclaimed WFR w/ PP
Bayugan, Esperanza
No. 734 dated
and Sibagat
5/29/1991
Duangan Watershed
Local declaration on
process
Esperanza
Taonaga Watershed
Local declaration on
process
Prosperidad
Maputi Watershed
Local declaration on
process
Rosario
2,760.00
Masabong Watershed
Local declaration on
process
Rosario
31.00
Mt. Magdiwata
Watershed
Local declaration on
process
San Francisco
Pangyan Watershed
Local declaration on
process
Trento
12,784.00
Dumagoo Watershed
Local declaration on
process
Trento
5,313.00
Alfred Watershed
Proclaimed WFR w/ PP
N0. 1236 dated
Bunawan
5/29/1998
El Rio Waterhed
Local declaration on
process
Elrio, Sibagat
Sinobong Watershed
Barangay Declared
Sinobong, Veruela
Source: PENRO-DENR, Forest Management – PENRO-LGU, ADS and PPDO
6|Environment Profile
74,266.00
17.59
607.00
1,658.00
100.00
31.00
264.77
Table 3: Tree Parks
Type of Tree Park
Provincial Tree Parks
Municipal Tree Park
Barangay Tree Parks
Location
Area (Hectares)
Provincial Government Center
2
Poblacion, Sibagat
1
Bentahon, Esperanza
3
Sta. Irene, Prosperidad
1
Mt. Carmel, Bayugan
1
New Visayas, Trento
1
Table 4: Natural Significant Sites for Eco-Tourism
Significant Sites
Location
Waterfalls
1. Camponay Waterfalls
2. Tagubay Waterfalls
3. Hagintam Falls
4. Murahya Falls
5. Lukot Falls
6. Bayugan Falls
7. Haran Falls
8. Motong Lake and Falls
9. Pinagatan Falls
10. Andanan Falls
11. Kago Falls
12. Wadukan Falls
13. Nyholm Falls
14. Bega Falls
15. Tandawan Falls
16. Maghilot Falls
17. Togonon Falls
18. Sinai Falls
19. Wadukan Falls
20. Mt. Diwata Falls # 1
21. Mt. Diwata Falls # 2
22. Mt. Diwata Falls #3
23. Mt. Diwata Falls #4
24. Mt. Diwata Falls #5
25. Mt. Diwata Falls #6
26. Mt. Diwata Falls #7
27. Taonaga Falls
Tabon-tabon, Sibagat
Tagubay, Bayugan
Mt. Carmel, Bayugan
Mt. Ararat, Bayugan
Sto. New Bohol, Calaitan, Bayugan
Hamogamaway, Bayugan
Getsemanie, Bayugan
La Paz
New Tubigon , Sibagat
Km. 11, Calaitan , Bayugan
Andanan, Bayugan
Getsamane, Bayugan
Rosario
Mabuhay, Prosperidad
Bayugan 3, Rosario
Bayugan 3, Rosario
La Purisima, Prosperidad
Sinia, Sibagat
Getsemane, Bayugan
San Francisco
San Francisco
San Francisco
San Francisco
San Francisco
San Francisco
San Franciso
Taonaga, Magsaysay, Prosperidad
7|Environment Profile
Significant Sites
28. Kalingan Falls
29. Masapia Falls
Location
Kaligayan, Consuelo, Bunawan
Consuelo, Bunawan
Lakes
1. Danao Lake
2. Daking Napo Lake
3. Wasian Lake
4. Lake De Oro
5. Lake Mihaba
6. Lake Ticgon
7. Lake Kalobidan
8. Lake Kayawanon
9. Lake Kangno
10. Dinagat Lake
11. Kabasayon Lake
12. Bukogon Lake
13. Kaninbaylan Lake
14. Mambaongon Lake
15. Buod Lake
16. Malingin Lake
17. Kaindayo Lake
18. Kasamuligan Lake
19. Kayanitan Lake
20. Casawanagn Lake
21. Tugno Lake
22. Ginhalinan Lake
23. Lake Himbang
24. Talacogon Lake
25. Motong Lake
26. Binoni Lake
27. Palabuhan Lake
Km. 11, Calitan, Byugan
Piglawigan, Bayugan
Wasian , Rosario
Guadalupe, Esperanza
San Marcos, Bunawan
San Marcos, Bunawan
San Marcos, Bunawan
San Marcos, Bunawan
San Marcos, Bunawan
Panlabuhan, Loreto
Panlabuhan, Loreto
Panlabuhan, Loreto
Panlabuhan, Loreto
Poblacion, La Paz
Poblacion, La Paz
Poblacion, La Paz
Poblacion, La Paz
Poblacion, La Paz
Poblacion, La Paz
La Flora, Talacogon
La Flora, Talacogon
La Flora, Talacogon
Poblacion, Talacogon
Poblacion, Talacogon
Lapaz, Agusan del Sur
Disamparados, Talacogon
Loreto, Agusan del Sur
Caves
1. Latay Cave
2. Kioya Cave
3. Paniki CAVE
4. Breathing
5. Puting Bato Cave
6. Tumuahong Cave
7. New Davao Cave
8. Subterranean Cave
9. Kalingayan Cave
10. New Hinagdanan Cave
11. Pagas Cave
12. Datu Anawa Kalipay
13. Tandawan Cave
Marfil, Rosario
Kioya, Sibagat
Km. 24, San Juan, Bayugan
Pinagalaan, Bayugan
Calaitan, Bayugan
Sta. Cruz, Rosario
San Jose, Prosperidad
Poblacion, Prosperidad
Bayugan 3, Rosario
Makiangkang, Bayugan
Lucac, San Francisco
Lucac, San Francisco
Bayugan 3, Rosario
8|Environment Profile
Significant Sites
14. Bugtong Bukid Cave
15. Pangyan Cave
16. Wasian Cave
17. Sinuropan Cave
18. Sisimon Cave
19. Bitan-agan Cave
20. Pilo Cave
21. Felipe Cave
22. Maximo Cave
23. Jun-Jun Cave
24. Junel Cave
25. Edwin Cave
26. Bobby Cave
PEAT LAND
Caimpugan Peatland
Location
Bayugan 3, Rosario
Pangyan, Trento
Wasian, Rosario
Maica, Trento
Sisimon, Veruela
Bitan-agan, San Francisco
Afga, Sibagat,
Sibagat
Sibagat
Sibagat
Sibagat
Sibagat
Sibagat
Caimpugan, San Francisco
Table 5: Ancestral Domain
Municipality
Talacogon
Rosario
San Luis
Veruela
Loreto
No. of
Date
Surveyed No. of Tribe CADT
Barangay Approved Area
right
No.
Covered
holder
(Ha)
9/3/2008
13,969
3,439 Manobo R134
Survey
No.
Remarks
Ads- With LRA,CNO
TAL0908- 13020005- transmital to DAR DENR
077
Gni
for re-projection on
4/29/2009
9/3/2008
22,581.33
3,690 Manobo
9/3/2008
1
(Binucalan)
25,895.05
2,689 Manubo, R13-SLU Ads-1302 CADT registered ta ROD
banwaon 0908-078 0004-Gni 5/07/10
11/7/2008
30,453.77
5,304 Manobo
R13Ads- Transmittal to LRA for
VER1108- 13020007- projaction transmitted
089
Gni
to DAR and DENR for reprojection.
11/7/2008
2
(Poblacion
and
5,020.01
2,841 Manobo
R13Ads- With LRA and CNO
LOR1108- 13020008- transmittal to DAR &
090
Gni
DENR for re-projection
6
18
R13Ads- Transmittal to LRA for
ROS0908- 13020006- re projection and
078
Gni
requuest for the
issuance of certificate of
non -overlap on
9/30/2009
9|Environment Profile
Municipality
No. of
Date
Surveyed No. of Tribe
Barangay Approved Area
right
Covered
holder
(Ha)
Katipunan)
on 04/29/09
R13Ads- For projection to LRA on
SIB1108- 13020011- 11/23/09
093
Gni
5
6/18/2009
67,577.92
3,000 Manobo
R13Ads- With LRA certification
LAP0609- 13020014- TD sent to RO/PO for
117
Gni
publication on 10/12/09
4
9/23/2009
29,830.52
8,436 Manobo
R13Ads- Transmitted to LRA for
BUN0909- 13020012- projection on 11/19/09,
136
Gni
TD endorsed to PO for
publication.
5 Brgy.
12/22/2009
1,971.62
La Paz
Bunawan
2.3.
Remarks
6,435 Manobo
13
Total
Survey
No.
11/13/2008 51,000.00
Sibagat
Rosario
CADT
No.
341
Manobo
R13Ads- Transmitted to LRA
ROS1209- 13020018- for projection on
142
Gni
11/19/09, TD
endorsed to PO for
publication.12/8/2009
TD endorsed to
RO/PO for publication
on 10-16-09
undergone and
second reading on
9/9-10/09. However
no approved WFP no
SPA.
248,299 36,175
Characteristics of the Study Area
Agusan del Sur is prone to several geologic and natural hazards that include earthquakes,
major mass movements (soil erosion) and flood occurrence. The municipalities of La Paz,
Loreto, Talacogon, Esperanza, San Francisco, Bunawan, San Luiz and Veruela are prone to
flood and landslides. The Hazard and Flood Map is shown in Figure 3.
10 | E n v i r o n m e n t P r o f i l e
Figure 3: Hazard Map
125 °20 '
125 °30 '
125 °40 '
125 °50 '
126 °00 '
126 °10 '
126 °20 '
126
LEGEN D :
MAP O F T HE P HILI PP INE S
9°10'
VISAYAS
MINDANAO
LO CA TI ON M AP
N
O
R
TE
9°00'
9
9
9°00'
S oi l E r o si o n
Fa u lt L in e
Flo o d p r on e
9°10'
Mun. Boundary
Y Municipal points
#
Roads
Prim ary Nat'l. Rd.
Sec ondary N at'l. Rd.
Prov incial Rd.
Municipal R d.
Barangay Rd.
Nia R d.
Priv ate Rd.
LUZON
S
L
SIB A G AT
Y
#
N
V I
C
BA YU G AN
O
Y ES P ER ANZ A
#
F
8°40'
M IS . O R IE NTAL
Y
#
E
8°40'
8°50'
OF
U
E
O
CE
VIN
PRO
AG
N
P R
8°50'
D
A
S U
PRO S P ER IDA D
G
R I
Y
#
A
8°30'
Y
#
Y
#
D E
8°30'
O
SA N FR AN CIS CO
SA N L UIS
L
TAL AC O GO N
Y
#
S
U R
RO SA RI O
8°20'
8°20'
Y
#
LA PA Z
Y
#
N ON
PROVIN CE OF BUKID
8°10'
Y
#
Y
#
8°10'
VE RUE L A
Y
#
TRE NTO
Y
#
8
STA . JO S E FA
Y
#
P R O V I N C E
O F
C O M P O S T E L A
V A L L E Y
126
125 °20 '
125 °30 '
125 °40 '
125 °50 '
0
126 °10 '
Source :
N
6
126 °00 '
6
Kilo mete rs
SC ALE 1 : 75 0,0 00
12
HAZARD MAP
Note :
Agusan del Sur
This m ap is subject t o validation, users noting
er rors or ommission are urged to in form t he
PPDO - GIS Section.
The PPDO is not responsible for any errors or
liabilities t hat m ay arise f rom using this map.
Layo ut by : PPDO - GIS Section
11 | E n v i r o n m e n t P r o f i l e
126 °20 '
1. PPDO Road N etw ork M ap
2. Caraga Rivers and Creeks M ap
8°00'
8°00'
8
BUN AW A N
LO RE TO
Figure 4: Flood Hazard Map
FLOOD HAZARD MAP
Agusan del Sur
N
LE G EN D :
Padiay
Mu n ic ip a l B o u n d a ry
B ara n g a y B o u nd a r y
P ri ma ry R o a d
S ec o n d ar y R o a d
P ro vi n ci al R oa d
Flo o d h a za rd m a p .sh p
A lm o st fl o od e d t
S ev e re l y flo o d e d
Mo d e r ate l y flo o d e d
S lig h t s ea s o na l
No F lo o d in g O b se rve d
Kulambogan
10
5
0
10
Perez
Kilo me ters
Banagbanag
Tabontabon
Magkalape
New Tubigon
Siba ga t
Afga
El Rio
Del Rosario
lN
n
sa
gu
A
f
Pr ovinc e o
Sto. Niño
Wawa
Tagubay
Sinai
Calaitan
New Gingoog
Langag
New Salem
Ba yugan
Mt. Olive
Gethsemane
Pinagalaan
La Purisima
Sta. Irene
Grace EstateVilla Undayon
MaygatasanTaglatawan
Magkiangkang
Fili Hamogaway
San Agustin Canayugan
Sagmone
Noli
Monte Vista
Verdu
Tag-anahaw
BakingKing
Cagbas
SagumaBocacSta. Teresita
Cubo Mahagkot
Bentahon
Mabuhay
Sta, Irene
San Jose
Hawilian
San Lorezo
Panaytay
Dacutan
Gamo Charito
Piglawigan Crossing Luna
Remedios
Agsabo
San Martin
Pros peridad
Tagabase
Maasin
SO URCE : BS W M
Mt. Carmel
Claro Cortes
Mahayag
Ilihan
Taglibas
Balubo
Kinamaybay
Mt. Ararat
Berseba
Tag-oyango
de
San Juan
Villangit
Kioya
or
te
Anahawan
Mar celina
San Salvador Salimbogaon
La Perian
San Toribio
Sta. Maria Awa New Maug
Sta Fe Labao
Aguinaldo
Kalabuan
Bunaguit
Guibonon
Nato
Milagros
Esperanza
Azpetia
Cebulan
Concordia
San Joaquin
Aos Arcos
Odiong
Duangan
Anolingan
Magsaysay
Mapaga
Aurora
Salug
Oro
Tahina
Dimasalang
Tandang Sora
Segunda
Tagbalili
Anislagan
Wegguam
MahapagCecill a
Santiago
La Union
Las Navas
Lucena
Patin ay
La Caridad
Napo
Sta. Inis
Mur itula
San Rafael
Nuevo Trabajo
Doña Maxima Culiram
Culi
Tagapua
Rizal
Borbon
Doña Flavia
San Luis
San Nicolas Zamora
Don Alijandro
Baylo
Mahayahay
Das-agan
Alegria
Karaos
Ladgadan
San FrancBayug
isanco
Ormaca
2
Batucan
Ebro
Labnig
San Pedro
Mate
Coalicion
i gao
Maligaya
Lapinigan
Binicalan
f Sur
Balit
Sta Rita
Lucac
Bitan-agan
Pisa- an Hubang
Barangay 1
Sta. Ana
Del Monte
Policarpo
Mahagsay
o
i nce
Prov
Sinakungan
San Vicente
La Suerte
Mac Arthur
Guadalope
Causwagan
Buena Gr acia
Pasta
Zil lovia
Buenasuer te
Mar bon
Libuac
Cabantao
Caimpugan
ur
de l S
La F lor a
Ta lac ogon
Desamparados
Mar fil
Tagbayagan
Mahar lika
Cabawan
Sta Cr uz
Novele
Sabang Gibong
Wasian
Lydia
Comota
n
kid no
of Bu
e
c
in
Pro v
Osmeña
Sabang Adgawan
Ros ario
Bayugan III
San Patricio Sagunto
Angeles
La P az
Vill a Paz
Langasian Halapitan
Consuelo
Katipunan
San Marcos
Bataan
Valentina
Magaud
San Andres
Violanta
Poblacion
Waloe
Kasapa II
Bunaw an
Mambalili
San Teodoro
Sto Tomas
Bunawan Brook
Manat
Nueva Era
Imelda
Nueva Gracia
Libertad
Kasapa
Sta Teresa
Johnson
San Mateo San Grabriel
Bacay
Kapatungan
Pag-asa
San Isidr o
Basa
Tudela
Masayan
Loreto
Caigangan
San Mariano
Tapaz
Binongan
La F ortuna Sampaguita
Sawagan
Cebolin
Sta Maria
Pulang_Lupa
Sabod
Veruela
Kauswagan
Sinobong
Limot
Candiis
Angas
Sta Imelia
San Ignacio
Sayon Conception
Anitap
Sisimon
San Roque
Cuevas
Sta Isabel
Binucayan
New VisayasSalvacion
Patrocinio
Langkilaan
Sta.AwaoJosefa
P rovin ce o f C om p o ste l a Va ll ey
12 | E n v i r o n m e n t P r o f i l e
Trento
Pangyan
2.4.
Disaster Risk Reduction
Agusan del Sur identified six hazards that could possibly be experienced by the province, but
the yearly hazards that occurred and incurred damages are floods, rain-induced landslide,
and ground rupture.
Areas within Agusan Marsh and along rivers are the areas prone to flooding but could not
experience flash floods because it is a catch basin of the waters from Compostela Valley,
Bukidnon, and Surigao provinces. It covers a total area of 110,069 hectares, absorbing flood
waters during long rainy seasons that happen from October to February.
Areas within 50o slopes and above which are present in the 13 municipalities are areas
prone to rain-induced landslide as shown in the hazard map and in tables affected by
landslides.
2.5.
Flooding
On flooding and rain-induced landslides, the province aims to manage a fatality of one
person per one hundred thousand populations. As shown in the computation on fatality
(see Table 6), the province will manage to fall on Level 1, (less than l fatality per 100,000
population in a year). On vulnerability level, a number of barangays are considered as highly
vulnerable thus initiatives will be done to mitigate such risk particularly by the Local Disaster
Risk Reduction and Management Office. Table 7 shows the population and barangay at risk
during flooding.
Table 6: Level of Prioritization for Risk Estimate to Life on Flooding
Level
1
2
3
4
5
Value
Description
Less than 1 fatality in 100,000
Population per year
0.00001
to 1 to 10 fatalities in 100,00 Population
0.0001
per year
1 to 10 fatalities in 1,000 Population
0.0001 to 0.001
per year
1 to 10 fatalities in 100 Population per
0.001 to 0.01
year
1 to <max> fatalities in 10 Population
0.01 to <max>
per year
0.0 to 0.00001
13 | E n v i r o n m e n t P r o f i l e
Priority
5 (Very Low)
4 (Low)
3 (Moderate)
2 (High)
1 (Urgent)
Table 7: Hazard Levels of Municipalities and Barangays
Municipality/
Barangay
Popul
ation
Land
Area
sq.km
Pop
Density
Vulnerability
Hazard
Area sq.km
Consequence
Population
At Risk
Priority
Bayugan
Poblacion
16913
2.9
5832
High
2.89303
1.68721510
0.0188200
1 Urgent
Maygatasan
3663
6.33
670
High
6.33363
0.38635149
0.0041700
2 High
Noli
3427
6.12
560
High
6.08924
0.34099778
0.3509900
2 High
Salvacion
5080
11.47
443
High
11.46980
0.33534540
0.0036200
2 High
Taglatawan
12259
2.79
4394
High
0.58250
0.25595314
0.0027600
2 High
Sagmone
Prosperidad
2043
2043
300
Med
6.15021
0.12177430
0.0013100
2 High
Lucena
2209
11.54
287
Med
9.63124
0.18243508
0.0019700
2 High
Patin-ay
7697
21.09
365
Med
4.91508
0.11840440
0.0012780
2 High
La Caridad
San Francisco
1519
5.83
261
Med
5.83357
0.10048915
0.0010850
2 High
Barangay 3
2933
1.19
2465
High
1.01322
0.24976021
0.0026970
2 High
Barangay 5
Rosario
4500
2.08
2163
High
0.45725
0.09890469
0.0010680
2 High
Bayugan
Bunawan
8360
77.07
108
Low
2.62159
0.11539980
0.0012463
2 High
Libertad
6605
17.5
377
Med
17.48330
0.43502000
0.0046982
2 High
San Teodoro
6988
19.97
350
Med
6.62584
0.15305690
0.0016530
2 High
Poblacion
Trento
4108
26.28
156
Low
26.27590
0.13526830
0.0014609
2 High
Kapatungan
3378
26.04
130
Low
25.65380
0.11005520
0.0011886
2 High
17664
27.12
651
High
16.71610
1.08822280
0.0117526
1 Urgent
Sampaguita
5698
17.2
331
Med
8.82947
0.19288850
0.0020830
2 High
Poblacion
Loreto
5237
26
201
Low
24.15270
0.16020530
0.0017302
2 High
Poblacion
La Paz
5912
73.47
80
Low
52.43000
0.13841530
0.0014949
2 High
Poblacion
Talacogon
4391
40.77
108
Low
39.19780
0.13970100
0.0015087
2 High
San Agustin
Labnig
3217
2925
3.93
6.81
819
430
High
Med
3.993080
0.32211950
0.0013265
2 High
2 High
Poblacion
Veruela
14 | E n v i r o n m e n t P r o f i l e
Municipality/
Barangay
Popul
ation
Land
Area
sq.km
Pop
Density
Vulnerability
Hazard
Area sq.km
6.095330
Consequence
0.19101290
Population
At Risk
0.0010521
Priority
Zamora
San Luis
1112
9.63
115
Low
31.143200
0.11818850
0.0012764
2 High
Dona Flavia
Esperanza
2432
4.63
503
High
2.34845
0.12282400
0.0013265
2 High
Poblacion
4129
5.02
823
High
4.94498
0.40697240
0.0043952
2 High
Dacutan
2709
9.74
2.78
Med
9.74007
0.17871090
0.0019300
2 High
Catmonton
1426
3.21
444
Med
3.21039
0.09407730
0.0010160
2 High
Santa Fe
1411
5.29
267
Med
5.28699
0.09316730
0.0010062
2 High
2.6.
Rain-induced Landslide and Ground Movement
Almost all the barangays of the municipality of Sibagat are prone to landslide. It could be
observed that portion of the National Highway located in the municipality have been under
repair due to landslide and ground movement. Other landslide prone municipalities are
Bayugan, Esperanza, San Francisco, La Paz, Loreto, Bunawan, and Prosperidad.
To reduce risk, hazard prone areas should not be used for settlement; but as shown in the
hazard maps, these are regular barangays that are within the landslide prone areas. On
areas like these, preparedness plan should be effected to avoid fatality, loss of crops and
properties. All the 314 barangays of Agusan del Sur are within levels 3, 4 and 5.
Table 8: Level of Prioritization for Risk Estimate to Life on Rain-Induced Landslide
Level
1
2
3
4
5
Value
Description
0.0 to 0.00001
0.00001 to
0.0001
0.0001 to 0.001
0.001 to 0.01
0.01 to <max>
Less than 1 fatality in 100,000
Population per year
1 to 10 fatalities in 100,00 Population
per year
1 to 10 fatalities in 1,000 Population
per year
1 to 10 fatalities in 100 Population per
year
1 to <max> fatalities in 10 Population
per year
15 | E n v i r o n m e n t P r o f i l e
Priority
5 (Very Low)
4 (Low)
3 (Moderate)
2 (High)
1 (Urgent)
Table 9: Level of Prioritization for Risk Estimate to Life on Rain-Induced Landslides
MUNICIPALITY/
BARANGAY
POPULATION
LAND
AREA
(Sq Km)
POPULA
TION
DENSITY
VULNE
RABILI
TY
LEVEL
HAZAR
D AREA
(Sq Km)
CONSEQUENCE
POPULATION
RISK
PRIORITY
0.0494874
5
0.0401364
0
0.0269511
4
0.0211474
1
0.0203614
9
0.0178724
5
0.0170186
2
0.0124793
2
0.0083135
2
0.0081354
9
0.0075819
3
0.0073768
0
0.0072882
6
0.0033392
5
0.0029055
8
0.0024076
3
0.0011058
6
0.0009674
2
0.000534
46
0.000433
47
0.000291
07
0.000228
39
0.000219
90
0.000193
02
0.000183
80
0.000134
78
0.000089
79
0.000087
86
0.000081
88
0.000079
67
0.000078
71
0.000036
06
0.000031
38
0.000026
00
0.000011
94
0.000010
45
3 (Moderate)
0.3235064
5
0.0747062
5
0.0437775
9
0.0394373
3
0.0384283
7
0.003493
87
0.000806
83
0.000472
80
0.000425
92
0.000415
03
2 (High)
Sibagat
1
Tabontabon
2741
13.33
206
Low
5.60
2
Kolambugan
1695
64.33
26
Low
35.98
3
Padiay
1731
141.01
12
Low
52.35
4
San Isidro
922
30.51
30
Low
16.43
5
New Tubigon
1332
73.43
18
Low
26.37
6
Magsaysay
1046
7.10
147
Low
2.83
7
Sta Maria
600
16.09
37
Low
10.72
8
Villangit
945
17.65
54
Low
5.39
9
Sta Cruz
472
20.15
23
Low
8.43
10
Kioya
680
6.60
103
Low
1.84
11
Perez
933
31.67
29
Low
6.09
12
Magkalape
190
6.90
28
Low
6.14
13
El Rio
1287
7.65
168
Low
1.01
14
Afga
3160
19.54
162
Low
0.48
15
Banagbanag
739
41.00
18
Low
3.76
16
Del Rosario
318
7.45
43
Low
1.31
17
Mahayahay
1407
8.94
157
Low
0.16
18
Tag-oyango
626
4.27
147
Low
0.15
3 (Moderate)
3 (Moderate)
3 (Moderate)
3 (Moderate)
3 (Moderate)
3 (Moderate)
3 (Moderate)
4 (Low)
4 (Low)
4 (Low)
4 (Low)
4 (Low)
4 (Low)
4 (Low)
4 (Low)
4 (Low)
5 (Very Low)
Bayugan
1
Taglatawan
12259
2.79
4394
High
0.57
2
Calaitan
2280
10.90
209
Low
8.33
3
San Juan
3344
24.59
136
Low
7.50
4
Sto. Ni±o
1865
43.10
43
Low
21.38
5
Sta. Irene
2508
12.46
201
Low
4.46
16 | E n v i r o n m e n t P r o f i l e
3 (Moderate)
3 (Moderate)
3 (Moderate)
3 (Moderate)
MUNICIPALITY/
BARANGAY
POPULATION
LAND
AREA
(Sq Km)
POPULA
TION
DENSITY
VULNE
RABILI
TY
LEVEL
HAZAR
D AREA
(Sq Km)
CONSEQUENCE
POPULATION
RISK
PRIORITY
0.0378993
0
0.0365564
8
0.0324369
4
0.0268693
2
0.0220124
5
0.0129549
5
0.0115577
2
0.0078656
1
0.0076277
5
0.0071995
8
0.0071885
8
0.0063579
1
0.0062055
5
0.0022566
3
0.0004951
8
0.0000100
0
0.000409
31
0.000394
81
0.000350
32
0.000290
19
0.000237
73
0.000139
91
0.000124
82
0.000084
95
0.000082
38
0.000077
76
0.000077
64
0.000068
67
0.000067
02
0.000024
37
0.000005
35
0.000000
11
3 (Moderate)
0.0137157
2
0.0126849
4
0.000148
13
0.000137
00
3 (Moderate)
6
Mt. Carmel
2255
35.04
64
Low
13.80
7
Berseba
1951
18.96
103
Low
8.27
8
Mt. Olive
1547
9.93
156
Low
4.85
9
Pinagalaan
1187
17.49
68
Low
9.21
10
Tagubay
735
10.47
70
Low
7.33
11
New Salem
590
26.74
22
Low
13.73
12
Claro Cortes
575
8.88
65
Low
4.14
13
Grace Estate
529
4.69
113
Low
1.62
14
Mahayag
660
9.89
67
Low
2.65
15
Hamogaway
1346
5.98
225
Low
0.75
16
1227
5.95
206
Low
0.81
17
Villa
Undayon
Wawa
971
5.82
167
Low
0.89
18
Getsemane
372
10.22
36
Low
4.02
19
1693
6.91
245
Low
0.21
20
Magkiangkan
g
Fili
2441
6.20
394
0.01
21
Mt. Ararat
619
25.86
24
Mediu
m
Low
0.01
3 (Moderate)
3 (Moderate)
3 (Moderate)
3 (Moderate)
3 (Moderate)
3 (Moderate)
4 (Low)
4 (Low)
4 (Low)
4 (Low)
4 (Low)
4 (Low)
4 (Low)
5 (Very Low)
5 (Very Low)
Prosperidad
1
La Purisima
2286
59.18
39
Low
8.20
2
Sta Irene
5832
30.81
189
Low
1.56
3 (Moderate)
San Francisco
1
San Isidro
2933
11.02
266
Mediu
m
2.06
0.0470441
5
0.000508
08
3 (Moderate)
2
Alegria
5209
19.48
267
1.88
Bayugan 2
4166
13.91
299
4
Karaos
2625
2.59
1014
5
Ormaca
697
12.74
55
Low
0.25
0.0431226
1
0.0090803
8
0.0073132
4
0.0005794
3
0.000465
72
0.000098
07
0.000078
98
0.000006
26
3 (Moderate)
3
Mediu
m
Mediu
m
High
0.35
0.06
17 | E n v i r o n m e n t P r o f i l e
4 (Low)
4 (Low)
5 (Very Low)
MUNICIPALITY/
BARANGAY
POPULATION
LAND
AREA
(Sq Km)
POPULA
TION
DENSITY
VULNE
RABILI
TY
LEVEL
HAZAR
D AREA
(Sq Km)
CONSEQUENCE
POPULATION
RISK
PRIORITY
0.0431226
1
0.0241496
9
0.0081354
9
0.0000044
8
0.000465
72
0.000260
82
0.000087
86
0.000000
05
3 (Moderate)
0.0070070
2
0.0022383
0
0.000075
68
0.000024
17
4 (Low)
0.0011058
6
0.0009674
2
0.000011
94
0.000010
45
4 (Low)
0.0257141
5
0.0106360
6
0.0002729
0
0.000277
71
0.000114
87
0.000002
95
3 (Moderate)
0.027756
69
0.022842
28
0.015381
28
0.000299
77
0.000246
70
0.000166
12
3 (Moderate)
0.015628
07
0.010401
94
0.000168
78
0.000112
34
3 (Moderate)
Rosario
1
Bayugan 3
8,360
77.07
108
Low
2.29
2
Sta Cruz
5146
57.22
90
Low
6.25
3
Marfil
1,850
39.47
47
Low
3.68
4
Wasian
3239
48.81
66
Low
0.00
4795
54.40
88
Low
1.86
1395
74.40
19
Low
2.75
3 (Moderate)
5 (Very Low)
Bunawan
1
2
Bunawan
Brook
Imelda
4 (Low)
Trento
1
Pangyan
667.00
44.66
14.94
Low
4.3300
2
Salvacion
1831.00
36.06
50.78
Low
2.8200
5 (Very Low)
Loreto
1
Kasapa
2768
495.48
6
Low
99.90
2
Sabod
961
441.99
2
Low
123.96
3
San Mariano
1833
70.56
26
Low
0.24
3 (Moderate)
5 (Very Low)
La Paz
1
Valentina
2082
17.63
118
Low
5.48
2
Angeles
999
643.53
2
Low
266.23
3
Kasapa II
825
352.51
2
Low
179.27
3 (Moderate)
3 (Moderate)
Esperanza
1
San Vicente
586
55.58
11
Low
33.12
2
Guibonon
659
69.71
9
Low
26.94
18 | E n v i r o n m e n t P r o f i l e
3 (Moderate)
2.7.
Ground Rupture
On underground rupture, the river municipalities are within the major fault lines. These are
the municipalities of Esperanza, San Luis, Talacogon, La Paz, Loreto, and Veruela.
Sibagat, San Francisco, Prosperidad are also affected by ground rupture due to geological
contacts, which are observed in the National Highways. Lianga fault connects Bayugan
passing through Prosperidad to the municipality of Lianga.
On risk management, settlements and infrastructure projects should not be constructed
near fault lines.
2.8.
Liquefaction
On liquefaction, the Talacogon Lake is identified to be prone to liquefaction with the major
fault line traversing the lake.
2.9.
Drought
The province seldom experienced drought due to its geographical location, climate and
rainfall pattern.
Table 10: Summary of Frequency and Occurrence
Main Causal Agent
Hazard
Meteorological/hydrological
Geological (earthquake)
Flood
Rain induced landslide
Ground rapture
Landslide
Liquefaction
Frequency
1 per year & 1 every 10 years
1 per year
1 per 5 years
1 per 20 years
1 every 5 years
19 | E n v i r o n m e n t P r o f i l e