Flood Information
Basin Hydrological Forecast
18 MAJOR RIVER BASINS STATUS
Pampanga Non-Flood Watch
Agno Non-Flood Watch
Bicol Non-Flood Watch
Cagayan Non-Flood Watch
Pasig-Marikina (Metro Manila Flood Monitoring) Non-Flood Watch
Abra Under-Construction
Cagayan De Oro Non-Flood Watch
Ilog-Hilabangan Under-Construction
Jalaur Under-Construction
Panay Under-Construction
Tagum-Libuganon Non-Flood Watch
Abulog Under-Construction
DAMS/RESERVOIR (SUB BASIN) STATUS
Angat Sub-basin Non-Flood Watch
Binga-Ambuklao-San Roque Sub-basin Non-Flood Watch
Pantabangan Sub-basin Non-Flood Watch
Magat Sub-basin Non-Flood Watch
General Flood Advisory
Metro Manila Flood Monitoring
Dam Information
Dam Water Level Update   (click dam name to see graph)
December 11,2018 06:00:00 am
Dam Name Observation Time & Date Reservoir Water Level (RWL) (m) Water Level Deviation Normal High Water Level (NHWL) (m) Deviation from NHWL (m) Rule Curve Elevation (m) Deviation from Rule Curve (m) Gate Opening Estimated (cms)
Hr Amount Gates Meters Inflow Outflow
Angat 06:00 AM 203.00 24 -0.05 212.00 -9.00 206.27 -3.27
Dec-11
06:00 am 203.05 -8.95 206.22 -3.17
Dec-10
Ipo 06:00 AM 101.03 24 -0.27 101.00 0.03 0.00 0.00
Dec-11
06:00 am 101.30 0.30 0.00 0.00
Dec-10
La Mesa 06:00 AM 75.58 24 -0.07 80.15 -4.57 0.00 0.00
Dec-11
06:00 am 75.65 -4.50 0.00 0.00
Dec-10
Ambuklao 06:00 AM 749.02 24 -0.05 752.00 -2.98 752.00 -2.98
Dec-11
06:00 am 749.07 -2.93 752.00 -2.93
Dec-10
Binga 06:00 AM 572.89 24 -0.43 575.00 -2.11 574.65 -1.76
Dec-11
06:00 am 573.32 -1.68 574.68 -1.36
Dec-10
San Roque 06:00 AM 282.12 24 -0.11 280.00 2.12 276.26 5.86
Dec-11
06:00 am 282.23 2.23 276.35 5.88
Dec-10
Pantabangan 06:00 AM 218.99 24 -0.12 216.00 2.99 211.92 7.07
Dec-11
06:00 am 219.11 3.11 211.95 7.16
Dec-10
Magat 06:00 AM 184.99 24 -0.47 190.00 -5.01 192.39 -7.40
Dec-11
06:00 am 185.46 -4.54 192.36 -6.90
Dec-10
Caliraya 06:00 AM 287.68 24 -0.08 0.00 0.00 0.00 0.00
Dec-11
06:00 am 287.76 0.00 0.00 0.00
Dec-10
Dam Operation

Recognizing the need for operational flood forecasting and warning system to help mitigate losses of life and property brought about by annual occurrences of flooding, the Government piloted a Flood Forecasting and Warning System (FFWS) for the Pampanga River Basin in 1973. The project was established with the financial assistance from the Government of Japan, the warning system proved effective than it led to the establishment of a similar system covering Agno, Bicol and Cagayan River Basins.

In April 1983, the Flood Forecasting and Warning System for Dam Operation (FFWSDO) project was conceived. The project was meant to prevent the occurrence of similar incident (i.e. Angat Dam) which result to the imprecedented flood heights that caused destruction and deaths downstream of the dam.

Implementation of the project was done stages (Phases I and II). Phase I, for Angat and Pantabangan Dams. Was completed in July 1986, was funded under the 10th Yen Loan Package from Japan Overseas Economic Cooperation Fund (OECF).

For Phase II, implementation was started last January 1990 and was fully completed by the on set of the rainy season in 1992. The major components of Phase II are the establishment of the PAGASA Data Information Center, flood forecasting and warning systems, flood forecasting and warning system at dam offices, hydrological stations, warning posts, repeater stations and monitoring stations.

The project was implemented with the National Power Corporation (NPC) and the National Irrigation Administration (NIA) as cooperating agencies and the Philippine, Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) as the lead agency.

The Flood Forecasting and Warning system for Dam Operation (FFWSDO) aims at the establishment of telemetered flood forecasting warning system that will provide the necessary information for the safe and cost effective operation of the existing five major dams in Luzon and to forewarn the people in the flood plains downstream of these damsites of the impending release of impounded water through spillways during typhoons. Phase I, involves the establishment of a FFWS covering Angat and Pantabangan watershed areas, while Phase II, involves the establishment of a FFWS covering Magat and Binga/Ambuklao watershed areas.

The Agencies directly involved in the implementation of the project such as NPC and NIA are dam authorities who operate and manage the Angat and Binga/Ambuklao Dams and Pantabangan and Magat Dams respectively amd the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) through its Flood Forecasting Branch which operates the flood forecasting warning systems. Monitoring agencies are the Department of Public Works and Highways (DPWH), Office of Civil Defense (OCD) and the National Water Resource Board (NWRB).

The complete FFWSDO has the following basic system and components:

  1. Real-time telemetering system consisting of the optimum number of rainfall and water level gauging stations

  2. Real-time processing computer system to forecast flood water inflow to the reservoir based on the telemetered rainfall data;

  3. Flood warning system with warning disseminationfacilities and supervisory control stations in dam offices;

  4. Overall supervisory system for the operation of the above system in the respective Central Offices of NPC, NIA, and PAGASA;

  5. Monitoring system which will allow exchange of necessary information among the participating agencies in flood control and other related activities; and

  6. Telecommunication system which provide the means for continuous information flow for the operation of the above system.

The project will result in the effective use of the hydrological data and information for the efficient operations and management of reservoirs and ensure the optimum use of the impounded water for power generation, irrigation, flood control and domestic water supply, the mitigation of flood damages, particularly loss of human lives, by timely and adequate warnings of impending release of impounded water through the spillways.

The Flood Forecasting and Warning System for Dam Operation consists of a network of telemetered gauging stations, warning stations, supervisory control offices of damsites linked with supervisory centers in Central Offices of NPC, NIA and PAGASA. The project’s major facilities are as follows;

FACILITIES NUMBER
a. Center at PAGASA 1
b. Center at NPC and NIA 2
c. Rainfall gauging station 19
d. Waterlevel gauging station 7
e. Fixed warning station 69
f. Mobile warning station 24
g. Repeater station 13
h. Reflector station 2
i. Monitor station 3

The Flood forecasting and Warning System for Dam Operation is composed of the following four major sub-system, namely;

Each of the sub-system are composed of the following components:

NAME OF DAM AREAS COVERED
PHASE 1
A. ANGAT DAM NORZAGARAY TO PLARIDEL
B. PANTABANGAN DAM RIZAL TO CABANATUAN CITY
PHASE II
A. MAGAT DAM MARIS DAM TO NAGUILIAN
B. BINGA/AMBUKLAO DAM SAN ROQUE TO CARMEN

The telemetering system is composed of rain and water level gauge stations (installed in selected places in dam watersheds) and radio telecommunication system for transmission of data.

In each damsite, at least three raingauge stations are installed in selected locations considered appropriate based on hydrological considerations, radiowave propagation and construction and maintenance accessibility.

THE SUPERVISORY AND CONTROL STATION (FFWS DAM OFFICE) FOR THE SUB-SYSTEM IS LOCATED IN EACH DAM OFFICE. IT SUPERVISES AND CONTROLS THE TELEMETERING SYSTEM AND SERVES AS THE SUPERVISING CONTROL STATION FOR THE WARNING SYSTEMS WITHIN ITS AREA OF COVERAGE. IT ALSO PERFORMS THE FOLLOWING FUNCTIONS:

  1. Disseminates dam discharge warning;

  2. Disseminates flood warnings issued by PAGASA;

  3. Monitors the operating condition of the warning stations;

  4. Prints out the collected data for compilation and utilization in subsequent analysis;

  5. Analyses the collected data to forecast the water inflows in the reservoirs and implements the recommended reservoir operation program.

THE FFWS DAM OFFICE AND RAINFALL/WATERLEVEL GAUGING STATIONS ARE LINKED BY RADIO TELECOM NETWORK.

The FFWSDO’s integrated and warning system includes the following:

  1. Fixed point warning stations categorized as Type-A and Type-B

  2. Mobile warning stations (vehicles) equipped with loud-speakers and portable radio telephones.

A Type-A warning station is equipped with a speaker and radio telephone. Generally, it is installed in the most densely populated area of each municipality with the area covered by each each FFWSDO. The Type-B warning station is equipped with speaker only and is installed in barangays located between the coverage of Type-A stations.

In area not reach by both fixed point warning stations, a warning vehicle equipped with a speaker and radio telephone is provided.

Discharge/Flood warning notices are transmitted from the Dam Offices to the municipal halls which serves as the center for the dissemination of warnings. All flood warning operation are undertaken in close coordination with the FFWS Dam Offices, PAGASA and other government agencies.

FLOOD FORECASTING AND WARNING OPERATION INCLUDES A NUMBER OF INTERRELATED ACTIVITIES, EACH OF WHICH FORMS THE FOLLOWING INTEGRAL PART OF THE OPERATION:

  1. Collection of hydrometeorological data on real-time basis.

  2. Assessment of weather conditions affecting or expected to affect the reservoir catchment areas;

  3. Streamflow simulation and flood forecasting;

  4. Preparation and issuance of DICHARGE WARNINGS or FLOOD BULLETINS and FLOOD INFORMATION as the case may be; and

  5. Dissemination of discharge warnings of flood warnings /information to the local, municipal, and provincial government offices, disaster coordinating councils and the general public through the FFWS Center, FFWS Dam Offices, OCD, DPWH, NWRB and other government agencies as well as the print and broadcast media.

The Warning/Information on flood are divided into two n(2) groups, namely; Flood Bulletin and Flood Information.

Flood Bulletin is categorized into four (4) kinds of warning namely: Flood Outlook, Flood Advisory, Flood Warning and Critical Flood Warning. The PAGASA prepares and issues the corresponding Flood Bulletins at the exact time.

In the issuance of Flood Bulletins PAGASA uses three (3) assessment levels as guides, namely:

  1. ALERT W.L. - corresponds to such river discharge which will not cause flooding in the flood warning zone.

  2. ALARM W.L. - corresponds to such river discharge which will not cause substantial flooding in the cultivated land and residential areas.

  3. CRITICAL W.L. - corresponds to such river discharge that causes extensive flooding in cultivated land and residential areas.

Flood Information consists of two (2) types, namely: the Flood Warning Information and Flood Disaster Information.
The Flood Warning Information which is issued by PAGASA is the supplemental and periodical information on Flood Warning to the inhabitants in the flood warning zone.
The Flood Disaster Information is prepared and issued by the Office of Civil Defense (OCD) when a serious disaster due to flood is taking place in the flood warning zone.
The Flood Bulletins, Flood Warning Information and Flood Disaster Information will be disseminated to the government agencies concerned.
Dissemination of all bulletins and information related to flooding in the flood warning zones shall be the joint responsibility of PAGASA and concerned Dam Offices who are equipped with supervisory control of different warning facilities.

Projects
Study/Pilot Area/Basin 13 FFWS Centers
Component Construction of FFWS Centers (Buildings)
Donor Government of The Philippines (GoP)
Duration
PMO PAGASA-HMD
Focal Points Roy A. Badilla and Edgar dela Cruz
Updates

River Basin

Flood Forecasting and Warning Center
(FFWC)

Location Status Target Completion Date
1. Abulog Tuguegarao City Project Completed
2. Abra Vigan City Nursery Project Completed
3. Ilog-Hilabangan Kabankalan City Hall Compound On-going (86.70%) January 2017
4. Jalaur Iloilo RADAR (Co-located)
5. Panay Roxas Synoptic Station Complex Project Suspended August 2017
6. Agusan Prosperidad City On-going (87.15%) February 2017
7. Tagum-Libuganon Tagum City Project Completed
8. Davao Davao Synoptic Station Complex Project Completed
9. Buayan-Malungon GenSan City Synoptic Station Complex Project Completed
10. Mindanao Cotabato City Hall Compound Site Development Plan Submitted August 2017
11. Agus Iligan City Project Suspended August 2017
12 Cagayan de Oro MPRSD Compound, El Salvador City with PR October 2017
13.Tagoloan
Study/Pilot Area/Basin
Component
Donor Korea International Cooperation Agency (KOICA)
Duration 2014-2015
PMO PAGASA-HMD
Focal Points Maximo F. Peralta and Sheila S. Schneider
Updates As of February 2017:
  • Dispatch of Korean experts in the Philippines for the implementation of EWS 3 project
  • Conducted surveys and meetings with the Fact Finding Team for various EWS 3 project components
Study/Pilot Area/Basin Laguna, Rizal, Cavite & Bulacan
Component FEWS, Flood Hazard Mapping (FHM), Vulnerability and Assessment, CBFEWS Storm Surge and Geomorphic Impact Modelling
Donor United Nations Development Programme (UNDP) / Australia Agency for International Developement (AusAID)
Duration 2010-2014
PMO Office of Civil Defense (OCD)
Focal Points Oskar D. Cruz - FHM & VA / Socrates F. Paat, Jr. - CBFEWS
Updates
  • As of February 2017:

    A. CBFEWS
    - Processing of documents for the procurement of various survey instruments.
    - Fieldwork: Inspection, Testing and Commisioning in Bulacan, Cavite, Rizal and Laguna
    - Site inspection for Bulacan, Cavite and Manila
    - Site inspection for the newly installed fences on five (5) gauging staions in selected area in the provinces of Bulacan, Cavite and Laguna
    - Joint Final Inspection of the equipment for Laguna, Rizal, Bulacan and Cavite
    - Training on Operation and Maintenance

    B. Flood Hazard Mapping
    - Terminal Report submitted (selected municipalities of Laguna, Rizal, Bulacan and Cavite

    C. Vulnerability and Assessment
    - Terminal Report submitted (Pasig, San Juan and Marikina)

    D. CBFEWS Storm Surge
    - Installed 4 early warning signages (ManilaCity, Bulacan, Cavite)
    - Terminal Report submitted

    E. Geomorphic Impact Modelling
    - Terminal Report Submitted (selected cities and municipalities in Mtero Manila, Cavite and Bulacan
Study/Pilot Area/Basin Principal River Basins
Component FFWS
Donor DOST
Duration 2015-2017
PMO PAGASA-HMD
Focal Points Roy A. Badilla/ Oskar D. Cruz
Updates
As of February 2017:
  • Hydrographic Survey (all Regions completed except IVA-B &VI)
  • DGPS Training
  • Site Validation and Assessment of Hydromet Stations (all Regions completed - Year 1)
  • Information, Education and Communication Campaign (IEC) and Flood Drill (Region III -Bataan and Region VIII - Samar and Leyte)
  • Hydrographic Survey Training for representatives of DOST Regions
Study/Pilot Area/Basin Jalaur and Allied Rivers
Component FFWS and Modelling
Donor Regional Integrated Multi-Hazard Early Warning System for Africa and Asia (RIMES)
Duration 2014-2017
PMO PAGASA-HMD
Focal Points Roy A. Badilla
Updates As of October 2018:
  • Commissioning and Testing
  • Evaluation of Decision Support System (DSS)
Study/Pilot Area/Basin Bicol River Basin
Component
Donor Government of Japan (GoJ)/ DoF/ Crown Agent
Duration 2010-2015
PMO PAGASA-HMD
Focal Points Rosalie C. Pagulayan
Updates As of February 2017:
  • Site survey coordination for Agdangan Tower
  • Securing of Permit to Purchase for VHF Radios and Microwave
  • Securing of Radio Frequency Radiation Evaluation for the telecommunication towers and telepole for gauging stations
  • Securing of services of Geodetic Engineer, etc. for the titling of Agdanagn Tower site
  • Coordination with the concerned LGUs were all undertaken.
  • Updating of all Contract of Lease for sites are almost done.
  • MOA for the DepEd sites in ALbay still under review as per info from Albay School Division.
  • Still waiting for the CAAP Height Clearance for the new tower for Agdangan
  • Signing of MOA between Department of Finance (DOF) and Department of Science and Technology (Secretary level) is on process
Study/Pilot Area/Basin Leyte and Samar
Component
Donor United Nations Developement Programme (UNDP) / Climate Change Commission (CCC)
Duration 2013-2015
PMO Climate Change Commission (CCC
Focal Points Sheila Schneider
Updates As of February 2017:
  • Installation of hydrometeorological instruments and establishment of vertical and horizontal control points to the nearby waterlevel stations (January 8-21, 2017)
  • Training for the installation and data retrieval of data loggers of raingauge and water level sensors
  • Sensitivity testing and analysis of results of various models
  • Revision of Terms of Reference of hydromet instruments
  • Printing out of initial flood maps (20m resolution) using HEC RAS
  • Signing of MOA
  • Site scoping and reconnaissance survey (Tacloban, Javier, ABuyog, Tanuan and Tolosa for Leyte Province and Municipalities of Bsey, Lawaan, Marabut and Balangiga for Samar Province
  • Submission of Inception Repor
  • Presentation of site scoping result to CCC Project Management Unit for the proposal of additional site coverage
  • Preparation and approval of Annual Procurement Plan
Study/Pilot Area/Basin Cagayan De Oro / Tagoloan
Component
Donor Japan International Cooperation Agency (JICA) / TCP
Duration 2016-2019
PMO PAGASA-HMD
Focal Points Rosalie C. Pagulayan
Updates As of February 2017:
  • Joint Coordination Committee (JCC) meetings
  • Project Launching cum Press Briefing (Media Briefing)
As of June 2014:
Meeting was held last April 14-15 focusing on the following issues:
  • Identify the current situation in the data management of FFWS, particularly the system and data format
  • Areas that will be covered by the new TCP
  • The Japanese Consultants to map-out activities for the detailed design phase of the project by August 2014
Study/Pilot Area/Basin Mindanao (Davao, Tagoloan and Buayan-Malungon River Basins)
Component FFWS - Enhancement of Network, Modeling
Donor Government of Japan (GoJ) / Japan International Cooperation System (JICS)
Duration 2013-2014
PMO PAGASA-HMD
Focal Points Rhonalyn Macalalad
Updates As of October 2018:
  • Installation of monitoring stations