REPUBLIC OF THE PHILIPPINESInternational Centre for Water Hazard and Risk Management (ICHARM)
Public Works Research Institute (PWRI)
And in cooperation with Japan International Cooperation Agency (JICA)“Community Based Flood Warning and Flood Hazard Mapping inCamiguin Island, Philippines”
February 07 to 09, 2007

Presented by:

Grecile Christopher R. Damo
Civil Engineer/Researcher

Department of Public Works and Highways
PROJECT MANAGEMENT OFFICEFLOOD CONTROL AND SABO ENGINEERING CENTER

Source: www.country reports.Org

- Just above the equator- 7,107 islands- Dry and wet season- Average Annual Rainfall 2,360 mm- Tropical Climate- 20 Typhoons- Fault System- Active Volcano- 421 Principal River Basins- 18 Major River Basins

ClimatologicalRegions of thePhilippines

Probable Typhoon Tracks
MAY

FEBRUARY

Northern andCentral Luzon

Very Frequent32%
NOVEMBEROCTOBERSEPTEMBER

Frequent
16%

AUGUST
DECEMBERMARCHFrequent
19%

Southern Luzon

JULY
JUNE

JANUARY

Northern Visayas
APRIL

Less Frequent
7%

Southern Visayas
and Northern
Mindanao

Rare1%

Mindanao Island

Source: Study for the Preparation of Flood Control Manual for DPWH TSG, 2003

Contents• Problems and Issues on the Government of thePhilippines’ Warning and Evacuation• Non-structural measures for future implementation– JICA Study on Nationwide Flood Risk Assessment for
Department of Public Works and Highways (DPWH)• Community Based Flood Hazard Mapping– Camiguin Non-Structural Measure (Ungaged River
Basin and Community Based)Disaster Management:
Disaster Coordinating Council• NDCC – National Disaster Coordinating Council• RDCC – 17 Regional DCC• PDCC – 80 Provincial DCC• CDCC – 113 City DCC• MDCC – 1,496 Municipal DCC• BDCC – 41,956 Barangay DCC

Flood Management
NDCC is the highest policy making,coordinating & supervising body at national
level. All Cabinet Secretaries are members
of NDCC• Office of the Civil Defense - Secretariat

Flow Chart of Data Dissemination
Warning and Evacuation

PAGASA

NDCC

Forecast& Warning

RDCC
PDCC

MDCC

CDCC
MDCC

BDCC

BDCC

BDCC

BDCC

BDCC

BDCC

BDCC
BDCC

BDCC
BDCC

BDCC

BDCC

BDCC

PAGASA

NDCC

TRI-MEDIA

RDCC
PDCC

MDCC

CDCC
MDCC

BDCC

BDCC

BDCC

BDCC

BDCC

BDCC

BDCC
BDCC

BDCC
BDCC

BDCC

BDCC

BDCC

PAGASANDCCPRESIDENT

RDCC

State ofCalamity

PDCCMDCC

CDCC
MDCC

BDCC

BDCC

BDCC

BDCC

BDCC

BDCC

BDCC
BDCC

BDCC
BDCC

BDCC

BDCC

BDCC

Why still many casualties?

Anilao River

Malbasag River

Ormoc, Leyte Flashflood (Nov. 5, 1991)

Lack of Structural and Non-Structural
Measuresand Preparedness

Why still many casualties?

People took refuge ina concrete house

Southern Leyte December 2003

Why still many casualties?
Debris flow/Alluvial Fan
Deposition in Aurora Province(Dec. 3, 2004)

Why still many casualties?

Many people died when they took
Source: Ninfa Z. Bitorefuge here

Quezon Province Flash Floods and Debris (Dec. 3, 2004)

Metro Manila

Topographical Location
Wrong perception of safe evacuation
No clear evacuation area

Why still many casualties?

Southern Leyte in February 2006

Why still many casualties?

Southern Leyte in February 2006

Lack of technical people withknowledge and capability ininvestigating high risk areas(mechanism of disasters)
The community/people always blame
the logging operations for the disasters
and the investigation will stop thereWhy still many casualties?

Bicol Disaster November 29, 2006

Why still many casualties?

Bicol Disaster November 29, 2006

Structural Measures gave a wrong
impression of safety
Residents did not evacuate because
they felt they are safer in theirconcrete houses
Some doesn’t want to leave theirproperties
Budget for the Warning System

Study on Nationwide Flood Risk Assessment
and Flood Mitigation Plan for the Selected
Areas of the Philippines• A technical assistance from the Government ofJapan• Started: September 2006
• Finish: March 2008
• Objectives: - To select prioritized areas based on theflood risk assessment and to prepare flood
mitigation plans for the selected areas and toconduct transfer of technology to DPWH during thecourse of the study

Study on Nationwide Flood Risk Assessment
and Flood Mitigation Plan for the Selected
Areas of the Philippines• Present Progress: Data gathering, site survey,
investigation and confirmation of the actual site
problems• The Government of the Philippines already started
the Multi-hazard Mapping under the fundings ofUNDP – the outputs will be utilized in the future forthe flood hazard mapping and evacuation route in
the high risk areas

Community based Non-Structural
Disaster Prevention Measures forProvince of Camiguin,Philippines

Camiguin is an island volcano located at
the Southern part of the Philippines

Camiguin IslandObjectives of Projectz Strengthen disaster prevention

capacities of PDCC/MDCC/BDCCz Increase the local people’s

awareness of disaster prevention
z Establish simple and effective

disaster prevention method

Activities
z Prepare hazard mapz Develop debris flow warning criteria andwarning systemz Increase public awareness on debris flow,

flash flood and flood prevention
measuresCommunity Based Hazard MapFlood
Flash Flood
Debris Flow

Warning System
To establish
Monitoring system
Decision-making system
Communication system

Monitoring
The Standard 8-inch Rain
Gauge non-recording typecomponents:- Measuring Stick 60 cm long
- Overflow Can- Collector Funnel- Measuring Tube
- StandRainfall observation

Since the project cannot provide the standard rain
gauge for all the high risk Barangays

Improvised
rainfallmeasurement

The improvised bucket has been measured and calibrated
so that when water reached a point there will be acorresponding value which is the same of that 8 inch
standard rain fall gauge

Monitoring

Water level monitoring

Communication System
Fax MessagePDCCSpecial Forecast
from PAGASAFax Message
Rainfall Observation

MDCC
VHF Radio Message

Rainfall Observation
Observations of RiverConditions• Color• Force of flow
• Sound• Presence of dislodgedvegetation• Debris movement• Water level

BDCC
Bandillo, house tohouse, megaphonewith siren, churchbells

COMMUNITY

Decision making
Warning Levels
RainfallStage
Intensity

Cumulative
Rainfall

Alert
Monitoring

Warning
Level
1Start rainfall measurement2

Preparatory 20mm/h

60mm

3

Evacuate

100mm

430mm/hPublic Awareness Componentz To enhance and strengthen enforcementof public awareness of disaster prevention
through community and participatory
approaches.

Warning
Church Bell or “Badillo” is being use for alarming theTown folks and nearby Barangays. This will give analert that people should evacuate. Small and hand held
sirens are used by the barangays heads

Training of Trainers

Community Dialogues

Table Top Exercise

Evacuation Drill

Conclusion• Simple countermeasures are effective for asmall community to understand and to sustain•Through participatory approach the end-users
recognized the problems and its benefits• Regular monitoring of the island’s activities
and drills should be carried out

Community based non-structural
measures can save a lot of lives.

Thank You Very Much
Domo Arigato Gusaimashita
Maraming Salamat Po
Department of Public Works and Highways
Project Management Office
Flood Control and Sabo Engineering Center
Napindan Hydraulic Control Structure Compound,Lopez Jaena Street corner E. Santos Avenue
Barangay Sta. Rosa, Pasig City, 1600 Philippines

Email: grecile1974@yahoo.com

Thank You Very Much
Domo Arigato Gusaimashita
Maraming Salamat Po
Department of Public Works and Highways
Project Management Office
Flood Control and Sabo Engineering Center
Napindan Hydraulic Control Structure Compound,Lopez Jaena Street corner E. Santos Avenue
Barangay Sta. Rosa, Pasig City, 1600 Philippines

Email: grecile1974@yahoo.com

Thank You Very Much
Domo Arigato Gusaimashita
Maraming Salamat Po
Department of Public Works and Highways
Project Management Office
Flood Control and Sabo Engineering Center
Napindan Hydraulic Control Structure Compound,
Lopez Jaena Street corner E. Santos Avenue
Barangay Sta. Rosa, Pasig City, 1600 Philippines

Email: grecile1974@yahoo.com

Thank You Very Much
Domo Arigato Gusaimashita
Maraming Salamat Po
Department of Public Works and Highways
Project Management Office
Flood Control and Sabo Engineering Center
Napindan Hydraulic Control Structure Compound,
Lopez Jaena Street corner E. Santos Avenue
Barangay Sta. Rosa, Pasig City, 1600 Philippines

Email: grecile1974@yahoo.com

LILOAN, CATARMAN
Barangay Spot Map

Evacuation
Areas

R2

R1

R3

POBLACION, SAGAY
Barangay Spot Map
TayongSpringPomongloSpringomk fr ane
Cre angw
Bin lsl
FaKay
Kalye

Kalye Peligro

Gym

SOUTH POBLACION, GUINSILIBAN
Barangay Spot Map

South Poblacion, Guinsiliban
Barangay Spot Map

TUPSAN, Mambajao
Barangay Spot Map
R2RR1

TUPSAN, Mambajao
Barangay Hazard Map

Aboitiz
ChapelPutingBalasBAYLAO, MAMBAJAO
Barangay Spot Map

Hubangon,Mahinog
Barangay Hazard Map