Proceedings of the 8th International Conference on Engineering Research, Innovation, and Education 2025 (ICERIE 2025)

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Potential Rainwater Harvesting Zoning for the Chittagong Hill Tracts

Authors
Md. Abdur Rahaman Fahim1, Aysha Akter1, *
1Department of Civil Engineering, Chittagong University of Engineering & Technology, Chittagong, 4349, Bangladesh
*Corresponding author. Email: aysha_akter@cuet.ac.bd
Corresponding Author
Aysha Akter
Available Online 18 November 2025.
DOI
10.2991/978-94-6463-884-4_30How to use a DOI?
Keywords
RWH; GIS; AHP; MCDA; CHT
Abstract

Water scarcity is a pressing global concern, with hilly regions facing severe challenges. Rainwater Harvesting (RWH) offers a viable solution to mitigate this issue through proper management. The Chittagong Hill Tracts (CHT) in southeastern Bangladesh, experience acute water scarcity during the dry season due to their higher elevation and steep slopes. This study applied a GIS-based approach integrated with Multi-Criteria Decision Analysis to assess the RWH potential of the CHT region. The evaluation focused on three critical criteria: runoff coefficient, drainage density, and slope. The SCS-CN method was employed within the GIS environment to calculate runoff. In contrast, the Analytical Hierarchy Process (AHP) and Eigenvector method were used to assign weights to the criteria and their sub-features. The study found that the runoff potential in the region ranged from 470 to 2,225 mm, with runoff coefficients varying between 0.19 and 0.72. The RWH potential zones were categorized into four groups: poor (771.28 km2), moderate (4,719.41 km2), high (6,726.74 km2), and very high (951.17 km2). Analysis revealed that the southern and southeastern areas are unsuitable for RWH, while the northwestern and northern parts are highly suitable. The findings provide a framework for localized planning and resource management.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 8th International Conference on Engineering Research, Innovation, and Education 2025 (ICERIE 2025)
Series
Advances in Engineering Research
Publication Date
18 November 2025
ISBN
978-94-6463-884-4
ISSN
2352-5401
DOI
10.2991/978-94-6463-884-4_30How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Md. Abdur Rahaman Fahim
AU  - Aysha Akter
PY  - 2025
DA  - 2025/11/18
TI  - Potential Rainwater Harvesting Zoning for the Chittagong Hill Tracts
BT  - Proceedings of the 8th International Conference on Engineering Research, Innovation, and Education 2025 (ICERIE 2025)
PB  - Atlantis Press
SP  - 246
EP  - 254
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-884-4_30
DO  - 10.2991/978-94-6463-884-4_30
ID  - Fahim2025
ER  -