Research Article

Prioritizing Flood Risk Assessment Using the Analytic Hierarchy Process (AHP): A Decision-Support Approach in the Lower Bagmati River Basin

Volume: 12 Number: 1 June 11, 2026

Prioritizing Flood Risk Assessment Using the Analytic Hierarchy Process (AHP): A Decision-Support Approach in the Lower Bagmati River Basin

Abstract

Flood risk mapping is a vital tool for effective flood disaster management, enabling policymakers to identify vulnerable zones and allocate resources efficiently. However, research often prioritizes major rivers, neglecting minor rivers, particularly in India, where frequent floods are poorly managed. Factors include floodplain encroachment, climate change, weak inter-agency coordination, limited use of geospatial technologies, such as Geographic Information System (GIS) and Remote Sensing (RS), and poor enforcement of regulations. An integrated approach combining structural measures (e.g., embankments) and non-structural measures (e.g., floodplain zoning, land use policies, and community awareness programs) is critical to minimize flood damage. This study employs multi-criteria decision-making (MCDM) tools to integrate diverse environmental datasets, including geophysical factors (e.g., slope, elevation, drainage density, rainfall) and socio-economic parameters (e.g., population density, health infrastructure, illiteracy, and land use). Results reveal that 26.94% of the area is at high flood risk, with 6.71% under very high risk, requiring immediate intervention. The flood risk map achieved a high validation accuracy with an Area Under the Curve (AUC) 0.92, confirming its reliability. This research emphasizes the importance of focusing on minor rivers and employing advanced decision-making tools to strengthen flood resilience. The findings further offer implications for forest engineering (e.g., watershed restoration, slope stabilization), land use regulation, and soil–water management, thereby supporting sustainable disaster preparedness and planning in understudied regions.

Keywords

Flood risk mapping, multicriteria decision-making, analytical hierarchy process (AHP), Socio-economic vulnerability, lower Bagmati river basin

Supporting Institution

The authors declared that this study has received no financial support.

Ethical Statement

N/A.

References

  1. Adnan, M. S. G., Abdullah, A. Y. M., Dewan, A., & Hall, J. W. (2020). The effects of changing land use and flood hazard on poverty in coastal Bangladesh. Land Use Policy, 99, 104868. https://doi.org/10.1016/J.LANDUSEPOL.2020.104868
  2. Alam, A., Ahmed, B., & Sammonds, P. (2020). Flash flood susceptibility assessment using the parameters of drainage basin morphometry in SE Bangladesh. Quaternary International. https://doi.org/10.1016/j.quaint.2020.04.047
  3. ANI. (2024, July 14). Muzaffarpur floods: Thousands cut off, schools submerged and homes flooded. The Times of India. (Original article: Bihar floods: Thousands cut off, schools submerged and homes flooded in Times of India) The Times of India
  4. Arnell, N. W., & Gosling, S. N. (2016). The impacts of climate change on river flood risk at the global scale. Climatic Change, 134(3), 387–401. https://doi.org/10.1007/s10584-014-1084-5
  5. Bin, L., Xu, K., Pan, H., Zhuang, Y., & Shen, R. (2023). Urban flood risk assessment characterizing the relationship among hazard, exposure, and vulnerability. Environmental Science and Pollution Research, 30(36), 86463–86477. https://doi.org/10.1007/s11356-023-28578-7
  6. Bouramdane, A.-A. (2023). Enhancing disaster management in smart cities through MCDM-AHP analysis amid 21st century challenges. Original Research Article 1 Information System and Smart City, 3(1), 189. https://doi.org/10.59400/issc.v3i1.189
  7. Brunner, M. I., Slater, L., Tallaksen, L. M., & Clark, M. (2021). Challenges in modeling and predicting floods and droughts: A review. WIREs Water, 8(3). https://doi.org/10.1002/wat2.1520
  8. Costa, J. E. (1978). Holocene stratigraphy in flood frequency analysis. Water Resources Research, 14(4), 626–632. https://doi.org/10.1029/WR014i004p00626
  9. Costache, R. (2019). Flood Susceptibility Assessment by Using Bivariate Statistics and Machine Learning Models - A Useful Tool for Flood Risk Management. Water Resources Management, 33, 3239–3256. https://doi.org/10.1007/s11269-019-02301-z
  10. Costache, R., & Tien, D. (2020). Science of the Total Environment Identi fi cation of areas prone to fl ash- fl ood phenomena using multiple- criteria decision-making , bivariate statistics , machine learning and their ensembles. Science of the Total Environment, 712, 136492. https://doi.org/10.1016/j.scitotenv.2019.136492
APA
Islam, S., Tahir, M., Haque, D. M. S., Parveen, N., & Mohibul, S. (2026). Prioritizing Flood Risk Assessment Using the Analytic Hierarchy Process (AHP): A Decision-Support Approach in the Lower Bagmati River Basin. European Journal of Forest Engineering, 12(1), 36-52. https://doi.org/10.33904/ejfe.1658705
AMA
1.Islam S, Tahir M, Haque DMS, Parveen N, Mohibul S. Prioritizing Flood Risk Assessment Using the Analytic Hierarchy Process (AHP): A Decision-Support Approach in the Lower Bagmati River Basin. Eur J Forest Eng. 2026;12(1):36-52. doi:10.33904/ejfe.1658705
Chicago
Islam, Sohidul, Mary Tahir, Dr Md Senaul Haque, Nasima Parveen, and Sk Mohibul. 2026. “Prioritizing Flood Risk Assessment Using the Analytic Hierarchy Process (AHP): A Decision-Support Approach in the Lower Bagmati River Basin”. European Journal of Forest Engineering 12 (1): 36-52. https://doi.org/10.33904/ejfe.1658705.
EndNote
Islam S, Tahir M, Haque DMS, Parveen N, Mohibul S (June 1, 2026) Prioritizing Flood Risk Assessment Using the Analytic Hierarchy Process (AHP): A Decision-Support Approach in the Lower Bagmati River Basin. European Journal of Forest Engineering 12 1 36–52.
IEEE
[1]S. Islam, M. Tahir, D. M. S. Haque, N. Parveen, and S. Mohibul, “Prioritizing Flood Risk Assessment Using the Analytic Hierarchy Process (AHP): A Decision-Support Approach in the Lower Bagmati River Basin”, Eur J Forest Eng, vol. 12, no. 1, pp. 36–52, June 2026, doi: 10.33904/ejfe.1658705.
ISNAD
Islam, Sohidul - Tahir, Mary - Haque, Dr Md Senaul - Parveen, Nasima - Mohibul, Sk. “Prioritizing Flood Risk Assessment Using the Analytic Hierarchy Process (AHP): A Decision-Support Approach in the Lower Bagmati River Basin”. European Journal of Forest Engineering 12/1 (June 1, 2026): 36-52. https://doi.org/10.33904/ejfe.1658705.
JAMA
1.Islam S, Tahir M, Haque DMS, Parveen N, Mohibul S. Prioritizing Flood Risk Assessment Using the Analytic Hierarchy Process (AHP): A Decision-Support Approach in the Lower Bagmati River Basin. Eur J Forest Eng. 2026;12:36–52.
MLA
Islam, Sohidul, et al. “Prioritizing Flood Risk Assessment Using the Analytic Hierarchy Process (AHP): A Decision-Support Approach in the Lower Bagmati River Basin”. European Journal of Forest Engineering, vol. 12, no. 1, June 2026, pp. 36-52, doi:10.33904/ejfe.1658705.
Vancouver
1.Sohidul Islam, Mary Tahir, Dr Md Senaul Haque, Nasima Parveen, Sk Mohibul. Prioritizing Flood Risk Assessment Using the Analytic Hierarchy Process (AHP): A Decision-Support Approach in the Lower Bagmati River Basin. Eur J Forest Eng. 2026 Jun. 1;12(1):36-52. doi:10.33904/ejfe.1658705