TWENTIETH CONGRESS OF THE 
REPUBLIC OF THE PHILIPPINES 
First Regular Session
of \
25 AUG-5 P3 :45
SENATE
S. No. 924
RHChi'/L J &;
Introduced by Senator Jinggoy Ejercito Estrada
AN ACT
PROVIDING FOR THE ISSUANCE OF A LIST OF LOW-LYING AREAS OF THE 
PHILIPPINE TERRITORY VULNERABLE TO RISING SEA LEVELS AS A RESULT 
OF CLIMATE CHANGE, AND AREAS AT HIGH RISK FOR NATURAL 
DISASTERS, MANDATING THE DEPARTMENT OF ENVIRONMENT AND 
NATURAL RESOURCES, DEPARTMENT OF SCIENCE AND TECHNOLOGY, 
PHILIPPINE SPACE AGENCY, CLIMATE CHANGE COMMISSION AND OTHER 
CONCERNED GOVERNMENT AGENCIES FOR ITS REGULAR UPDATING AND 
APPROPRIATING FUNDS THEREFOR AND FOR OTHER PURPOSES
EXPLANATORY NOTE
The Philippines, being one of the most disaster-prone countries in the world, 
faces multiple hazards that pose significant threats to lives, properties, and livelihoods. 
Our geographical location makes us particularly vulnerable to various natural disasters, 
including typhoons, earthquakes, volcanic eruptions, and the growing challenges 
posed by climate change.
The devastating impact of natural disasters in recent years underscores the 
urgent need for a more systematic and scientific approach to disaster risk reduction 
and management. In November 2024, the Philippines witnessed an unprecedented 
occurrence when four tropical cyclones were simultaneously active in the Western 
Pacific - a phenomenon not seen since 1951. The combined effects of Tropical Storm 
Trami (Kristine) and Typhoon Kong-rey (Leon) alone resulted in damages exceeding 
P14 billion in agriculture and infrastructure.
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Beyond the immediate threats of extreme weather events, our nation faces the 
long-term challenges of climate change. The Intergovernmental Panel on Climate 
Change (IPCC) reports that sea levels in our region are rising faster than the global 
average. This poses a direct threat to our coastal communities, where millions of 
Filipino fisherfolk reside and depend on maritime resources for their livelihood.
The proposed National Hazard Mapping Act seeks to address these challenges 
by mandating the creation and regular updating of a comprehensive National Disaster 
Map. This initiative will identify low-lying areas vulnerable to rising sea levels and 
regions at high risk for natural disasters. The map will serve as a crucial tool for 
disaster preparedness, providing proper identification of lands bordering sea levels, 
areas exposed to volcanic eruption, and regions lying on earthquake faults.
Notably, this legislation emphasizes a holistic approach by incorporating both 
scientific data and indigenous knowledge in hazard mapping. It also ensures the 
accessibility of these maps to local government units and communities through 
comprehensive training programs and information campaigns.
The creation of this national disaster map will enable our local government units 
and communities to better prepare for and respond to natural disasters. By providing 
clear identification of high-risk areas and established evacuation routes, we can 
significantly reduce the loss of lives and properties during calamities.
In view of the foregoing, immediate passage of this bill is earnestly sought.
EJERCITO ESTRADA


i i 11; -1.
TWENTIETH CONGRESS OF THE 
)
REPUBLIC OF THE PHILIPPINES 
)
F/rst Regular Session 
)
SENATE
S. No. 924
... affliT
25 AUG-5 P3:45
Introduced by Senator Jinggoy Ejercito Estrada
AN ACT
PROVIDING FOR THE ISSUANCE OF A LIST OF LOW-LYING AREAS OF THE 
PHILIPPINE TERRITORY VULNERABLE TO RISING SEA LEVELS AS A RESULT 
OF CLIMATE CHANGE, AND AREAS AT HIGH RISK FOR NATURAL 
DISASTERS, MANDATING THE DEPARTMENT OF ENVIRONMENT AND 
NATURAL RESOURCES, DEPARTMENT OF SCIENCE AND TECHNOLOGY, 
PHILIPPINE SPACE AGENCY, CLIMATE CHANGE COMMISSION AND OTHER 
CONCERNED GOVERNMENT AGENCIES FOR ITS REGULAR UPDATING AND 
APPROPRIATING FUNDS THEREFOR AND FOR OTHER PURPOSES
Be it enacted by the Senate and the House of Representatives of the Philippines 
in Congress assembled:
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Section 1. Short Title. - This Act shall be known as the "National Hazard
2 
Mapping Act".
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Sec. 2. Declaration Policy. - It is the policy of the State to promote the public
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health, safety and general welfare. Towards this end, the State shall endeavor to
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formulate an orderly layout of the national land mass with identification of low-lying
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areas vulnerable to rising sea levels as a result of climate change, and areas at high
7 
risk for natural disasters.
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Sec. 3. National Disasters Map. - Within one (1) year after the effectivity of this
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Act, the Department of Environment and Natural Resources (DENR), through the
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National Mapping and Resources Information Authority (NAMRIA) and the Mines and
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Geosciences Bureau (MGB), together with the Department of Science and Technology
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(DOST), Philippine Space Agency (PhilSA), Climate Change Commission (CCC) and
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National Disaster Risk Reduction and Management Council (NDRRMC) are directed to
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provide and issue a national disaster map of the Philippines, identifying the low-lying


1 
areas vulnerable to rising sea levels as a result of climate change and areas at high
2 
risk for natural disasters. It shall contain proper identification of lands bordering sea
3 
levels, exposed to volcanic eruption and lying on earthquake faults, with the criteria
4 
for evacuation and illustration of recommended evacuation sites and routes.
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Sec. 4. Accessibility and Implementation of the National Hazard Map. - S To
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ensure the effective use of the national disaster map, the DENR, in coordination with
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NAMRIA, MGB, DOST, PhilSA, CCC, NDRRMC, and other relevant agencies, shall
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develop and implement a comprehensive plan to ensure its accessibility and proper
9 
use across the country. This plan shall include, but not be limited to a nationwide
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information drive, training programs for local officials, disaster response teams, and
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community leaders, and other similar efforts.
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Priority shall be accorded to identified vulnerable and high-risk communities in
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the dissemination and implementation of the national disaster maps.
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Sec. 5. Appropriations. - The amount necessary for the implementation of this
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Act shall be charged to the appropriations of the implementing agencies under the
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General Appropriations Act. Thereafter, such sums as may be necessary for its
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continued implementation shall be included in the annual General Appropriations Act.
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Sec. 6. Separability Clause. - In the event that any provision of this Act is
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declared unconstitutional, the validity of the other provisions shall not be affected by
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such declaration.
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Sec. 7. Repealing Clause. - All laws, decrees, orders, rules and regulations and
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other issuances or parts thereof which are inconsistent with the provisions of this Act
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are hereby repealed or modified accordingly.
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Sec. 8. Effectivity. - This Act shall take effect 15 days following its publication
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in the Official Gazette or in at least two newspapers of general circulation.
Approved,