Proceedings of the International Conference on Civil Engineering and Architecture for Sustainable Infrastructure Development and Environment (CEASIDE 2025)

<Previous Article In Volume
Next Article In Volume>

SWAT-GA-Based Optimization of Best Management Practices for Hydrological Enhancement in the Meenachil River Basin

Authors
B. S. Lekha1, *, K. Smitha Mohan1
1M. Tech. Water resources and Hydro informatics, Department of Civil Engineering, Government engineering college, Thrissur, India
*Corresponding author. Email: lekhabs@gectcr.ac.in
Corresponding Author
B. S. Lekha
Available Online 29 December 2025.
DOI
10.2991/978-94-6463-936-0_3How to use a DOI?
Keywords
Best management practices (BMPs); SWAT; runoff reduction; sediment yield; hydrological enhancement; Genetic Algorithm (GA)
Abstract

The Meenachil river basin faces significant challenges due to rainfall, leading to issues such as soil erosion and flooding. Effective management of runoff is essential for improving watershed health. The main focus of this research is to evaluate and optimize BMPs for Meenachil basin using SWAT and GA, with the goal of reducing runoff and sediment yield in a cost-effective and sustainable manner. The SWAT was used for hydrological modelling, coupled with GA to identify the most cost-effective BMP scenarios. The model calibration and validation were conducted using SWAT-CUP with the SUFI-2 algorithm, with observed discharge data from 2001–2017. This ensured the model’s reliability. After the implementation of BMPs, results proved that the combined application of multiple BMPs outperformed individual practices in reducing runoff and sediment yield. The optimization process highlighted contour farming among the most effective and economical strategies. The findings support the adoption of targeted, cost-efficient practices to enhance water quality and preserve soil health.

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.

Download article (PDF)

<Previous Article In Volume
Next Article In Volume>
Volume Title
Proceedings of the International Conference on Civil Engineering and Architecture for Sustainable Infrastructure Development and Environment (CEASIDE 2025)
Series
Atlantis Highlights in Sustainable Development
Publication Date
29 December 2025
ISBN
978-94-6463-936-0
ISSN
3005-155X
DOI
10.2991/978-94-6463-936-0_3How 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  - B. S. Lekha
AU  - K. Smitha Mohan
PY  - 2025
DA  - 2025/12/29
TI  - SWAT-GA-Based Optimization of Best Management Practices for Hydrological Enhancement in the Meenachil River Basin
BT  - Proceedings of the International Conference on Civil Engineering and Architecture for Sustainable Infrastructure Development and Environment (CEASIDE 2025)
PB  - Atlantis Press
SP  - 22
EP  - 37
SN  - 3005-155X
UR  - https://doi.org/10.2991/978-94-6463-936-0_3
DO  - 10.2991/978-94-6463-936-0_3
ID  - Lekha2025
ER  -