HAZARD MAPPING AND MANAGEMENT ON FLOOD-PRONE AREAS IN TAGUM CITY, PHILIPPINES

Ella Mae G. Apale; Catherine C. Almacin; Allan; Jr. L. Amante; Joel S. Pardillo

doi:10.5281/zenodo.21438179

Abstract

This paper examined the risks of floods and vulnerabilities in Tagum City, Philippines through the application of Geographic Information Systems (GIS). Specifically, this paper aimed to identify the areas that are prone to floods, investigate land-use and zoning issues, identify the exposure of critical facilities, quantify population vulnerability to floods, and suggest strategies for the management of flood risks. This study used a descriptive and analytical research methodology utilizing the flood susceptibility map produced by the Mines and Geosciences Bureau (MGB), Comprehensive Land Use Plan (CLUP) maps, barangay boundaries, Philippine Statistics Authority (PSA) population data, and the list of critical facilities as input datasets for GIS overlay analysis. Exposure indices were calculated to rank the barangays based on their level of exposure to floods. From the result obtained, it can be seen that the barangays which have high exposure to flood risk are located in the Hijo River floodplains. These include Busaon, Bincungan, Pagsabangan, Liboganon, and San Miguel. Agricultural and residential zones had the highest exposure level. Also, it was noted that many Schools, health centers and other critical facilities exist in the areas with high and very high levels of flood susceptibility. Further, population exposure analysis indicated that there is vulnerability among people living in the barangays with high risk of floods.

Keywords

Flood Risk Assessment, Flood Susceptibility, Geographic Information System, Spatial Analysis, Land Use Planning, Disaster Risk Reduction Management

References

1) Abdullah, A. Y. M., Dewan, A., Kiselev, G., & Rahman, M. M. (2023). Integrating GIS and remote
sensing for flood risk assessment and sustainable urban planning: A systematic review. Environmental
Science and Policy, 146, 103–118. https://doi.org/10.1016/j.envsci.2023.06.012
2) Cruz, R., Narisma, G., & Villafuerte, Q. (2017). Climate change impacts and adaptation in the Philippines.
Climate, Disaster and Development Journal, 3(2), 45–62. https://climateadaptationplatform.com/climatechange-adaptation-impacts-and-vulnerabilities-in-the-philippines
3) Department of Environment and Natural Resources–Mines and Geosciences Bureau. (2020). Flood
hazard maps. https://www.mgb.gov.ph
4) Department of Human Settlements and Urban Development. (2020). Comprehensive land use planning
guidebook. https://dhsud.gov.ph
5) Department of Environment and Natural Resources–Mines and Geosciences Bureau. (2020). Flood
hazard maps. https://www.mgb.gov.ph
6) Department of Environment and Natural Resources. (2018). Tagum-Libuganon River Basin management
reports.
7) Else, H., Khanna, P., & Hassan, H. (2023). AI-generated research paper fabrication and plagiarism in the
scientific community. Patterns, 4(4), 100706. https://doi.org/10.1016/j.patter.2023.100706
8) Gray, J., Lloyd, S., Healey, S., & Opdyke, A. (2022). Urban and rural patterns of typhoon mortality in the
Philippines. https://www.sciencedirect.com/science/article/pii/S2590061722000217#bb0010
9) Intergovernmental Panel on Climate Change. (2023). Climate change 2023: Synthesis report.
Contribution of Working Groups I, II and III to the Sixth Assessment Report of the Intergovernmental
Panel on Climate Change. IPCC. https://www.ipcc.ch/report/ar6/syr/
10) Jeruss, J. S., & Cunningham, R. M. (2023). Working toward greater transparency to improve the
management of research misconduct. JAMA Network Open, 6(6), e2320799.
https://doi.org/10.1001/jamanetworkopen.2023.20799
11) Koks, E. E., Thissen, M., Alfieri, L., De Moel, H., & Aerts, J. C. J. H. (2023). Integrating spatial flood
risk assessment into climate adaptation and urban planning. Nature Cities, 1(2), 108–117.
https://doi.org/10.1038/s44284-023-00020-8
12) Lasco, R. D., Delfino, R. J. P., & Pulhin, F. B. (2020). Climate change adaptation in the Philippines.
Climate and Development, 12(8), 687–699.
13) Longley, P. A., & Goodchild, M. F. (2019). Geographic information science and systems. In International
Encyclopedia of Human Geography (2nd ed., pp. 29–36). Elsevier. https://doi.org/10.1016/B978-0-08-
102295-5.10557-8
14) Merz, B., Kreibich, H., Vorogushyn, S., & Blöschl, G. (2022). Flood risk assessment at multiple scales:
Recent advances and future perspectives. Natural Hazards and Earth System Sciences, 22(4), 1371–1392.
https://doi.org/10.5194/nhess-22-1371-2022
15) Mines and Geosciences Bureau. (2020). Flood susceptibility maps. Department of Environment and
Natural Resources. https://www.mgb.gov.ph
16) Muthanna, A., Chaaban, Y., & Qadhi, S. (2024). A model of the interrelationship between research ethics
and research integrity. International Journal of Qualitative Studies on Health and Well-being, 19(1),
2295151. https://doi.org/10.1080/17482631.2023.229515
17) Philippine Statistics Authority. (2023). 2020 Census of Population and Housing (2020 CPH).
https://psa.gov.ph
18) Pelone, B., & Arellano, A. J. (2024). Flood preparedness and utilization of early warning systems among
households in selected flood-prone areas in Tagum City, Davao del Norte.
https://ejournals.ph/article.php?id=24157
19) Tellman, B., Sullivan, J. A., & Doyle, C. S. (2021). Global flood observation with multiple satellites:
Applications in Rio Salado (Argentina) and the Eastern Nile Basin. In Global Drought and Flood:
Observation, Modeling, and Prediction (pp. 99–121). Wiley. https://doi.org/10.1002/9781119427339.ch5
20) United Nations Office for Disaster Risk Reduction. (2022). Global Assessment Report on Disaster Risk
Reduction 2022: Our World at Risk—Transforming Governance for a Resilient Future.
https://www.undrr.org/gar2022