Geostudio-Assisted Numerical Investigation of Seepage Mitigation in Earthen Irrigation Canals Using HDPE Geomembrane Liners

Abstract

Water efficiency and overall system performance are greatly impacted by seepage losses in irrigation canals, especially in semi-arid areas where water is a valuable and limited resource. This study uses High-Density Polyethylene (HDPE) geomembranes in conjunction with a thorough numerical analysis using GeoStudio software to examine seepage control in the Chanda Distributary Canal in the Lambhua region of Sultanpur District, Uttar Pradesh. The project\'s objective is to assess how well HDPE geomembrane lining works to lower seepage rates, improve structural integrity, and increase the canal\'s operational efficiency. To describe the subsurface conditions along important Chanda Distributary sections, a thorough geotechnical survey was carried out. To model current seepage conditions and evaluate the effectiveness of various lining designs, field data were integrated into GeoStudio\'s SEEP/W module. Under steady-state flow conditions, the research contrasted scenarios with and without geomembrane liner. The results show that when HDPE geomembranes are erected correctly with protective soil cover, seepage loss is significantly reduced—up to 85%. Additionally, the study emphasizes important design factors such interface shear strength, anchoring methods, and the possibility of geomembrane damage from hydraulic pressure or settlement. According to a cost-benefit analysis, the adoption of geomembrane lining is justified by the long-term water savings and lower maintenance costs, despite the substantial initial expenditure. The importance of combining cutting-edge geosynthetic materials with numerical modeling tools to maximize water-saving techniques in irrigation infrastructure is highlighted by this study. Future canal rehabilitation initiatives in comparable hydrological and geological environments can benefit from the findings.

Introduction

The text discusses the importance of water management, irrigation efficiency, and seepage control for sustainable agriculture, especially in developing countries like India. Canal irrigation plays a major role in food security, but significant water losses occur due to seepage through unlined earthen canals. These losses can reach 30–50% depending on soil and hydraulic conditions, causing reduced irrigation efficiency, groundwater rise, waterlogging, salinity, erosion, and structural instability.

The study focuses on using High-Density Polyethylene (HDPE) geomembranes as an effective seepage control solution. HDPE liners have very low permeability, high strength, durability, chemical resistance, and long service life, making them suitable for canal lining applications. Their use improves water conservation, reduces maintenance requirements, and enhances irrigation performance.

The text explains that numerical modelling using GeoStudio SEEP/W is an effective method for analyzing seepage behaviour. Finite element modelling helps evaluate seepage paths, hydraulic gradients, pore-water pressure, pressure head distribution, and the effectiveness of lining systems.

The literature review shows that previous studies have demonstrated the advantages of HDPE geomembranes over traditional canal lining methods. However, gaps remain, including limited studies on Indian distributary canals, soil–liner interaction, defect analysis, and realistic field-based numerical modelling.

The research aims to investigate seepage reduction in the Chanda Distributary Canal, Sultanpur, Uttar Pradesh, by:

• Analyzing seepage behaviour in unlined canals.
• Evaluating HDPE geomembrane effectiveness.
• Developing GeoStudio SEEP/W finite element models.
• Comparing different lining conditions.
• Assessing the practical use of HDPE liners for sustainable irrigation.

The methodology includes:

1. Study Area Analysis: The canal is located in a semi-arid agricultural region with high irrigation demand.
2. Soil Characterization: The canal bed consists of silty clay loam soil with moderate permeability.
3. HDPE Liner Modelling: A 1.5 mm thick geomembrane with extremely low hydraulic conductivity is used.
4. Numerical Simulation: GeoStudio SEEP/W is used with finite element analysis based on Darcy’s law.
5. Model Setup: Canal geometry, mesh refinement, and hydraulic boundary conditions are defined to evaluate seepage performance.

Conclusion

Our primary objective in this study was to analyse and evaluate the effectiveness of High-Density Polyethylene (HDPE) geosynthetic liners in mitigating seepage losses in the Chanda Distributary Canal using advanced numerical modelling through GeoStudio. The significant water losses from seepage in unlined earthen irrigation canals, which result in ineffective water distribution, subsurface saturation, and long-term stability problems, served as the impetus for the study. Two thorough numerical models were created in order to accomplish the goals: one simulated the canal after an HDPE geomembrane liner was installed, and the other represented the unlined canal. To guarantee consistency and enable a direct comparison, both models were exposed to the same boundary conditions, soil parameters, and hydraulic loads. The flow profile of the unlined canal revealed significant downward and lateral seepage, characterized by dense flow vectors propagating into the foundation and embankments. This active seepage was also reflected in the pressure head contours, which showed steep gradients and hydraulic connectivity between canal water and the surrounding soil for the unlined scenario, the computed seepage flux was 2.877×10^?5 m3/s/m. The specific discharge was found to be 4.11×10?^-6 m3/s/m2 when normalized to the seepage area (7.0 m2), showing a high rate of water loss per unit area. The HDPE-lined canal, on the other hand, displayed a very different seepage behavior. Nearly all of the flow vectors were contained within the water body, and the flow profile showed very little seepage activity beneath the canal bed. In a similar vein, the pressure head contours were widely separated and smooth, indicating that the low permeability of HDPE liners suppressed lateral and vertical seepage. The seepage flux in the lined condition was reduced to (8.26×10^-7 m3/s/m) which corresponds to a specific discharge of 1.18×10^?7 m3/s/m2. From an engineering and operational perspective, the results clearly establish the feasibility and efficiency of using HDPE geosynthetic liners for seepage control in irrigation infrastructure. This intervention not only supports water conservation but also promotes sustainable irrigation practices, particularly in water-scarce regions

References

[1] El-Molla, D. A., & Kilit, M. (2026). Seepage control, detection, and treatment in embankment dams: A state-of-the-art review. Arabian Journal for Science and Engineering, 51, 3823–3849. https://doi.org/10.1007/s13369-025-10185-y [2] Rahimi, J., & Nasimi, M. N. (2025). Numerical analysis of channel seepage using Geo-Studio modeling: A case study in an artificial river, Afghanistan. Journal of The Institution of Engineers (India): Series A, 1–21. https://doi.org/10.1007/s40030-025-00933-6 [3] Chatrabhuj, Meshram, Kundan, & Omar, P. J. (2026). Geo-artificial intelligence for smart irrigation management systems. In Agricultural Insights from Space (pp. 195–212). Academic Press. https://doi.org/10.1016/B978-0-443-34113-7.00007-9 [4] Elshaarawy, M. K., & Elmasry, N. H. (2024). Experimental and numerical modeling of seepage in trapezoidal channels. Knowledge-Based Engineering and Sciences, 5(3), 43–60. https://doi.org/10.51526/kbes.2024.5.3.43-60 [5] Chatrabhuj, Meshram, K. Mishra, U., et al. (2024). Integration of remote sensing data and GIS technologies in river management system. Discover Geoscience, 2, 67. https://doi.org/10.1007/s44288-024-00080-8 [6] Shirodkar, T. K., &Gidde, M. (2022). Study of canal lining and canal seepage HDPE sheet for Nira Deoghar Canal, Bhor. Journal of Emerging Technologies and Innovative Research (JETIR), 9(7). [7] Al-Hadidi, M. T., & Hashim, S. H. (2021). Finite element analysis of seepage for Kongele earth dam using Geo-Studio software. Journal of Physics: Conference Series, 1895(1), 012003. https://doi.org/10.1088/1742-6596/1895/1/012003 [8] El-Gendy, A., & El-Agha, D. (2021). Numerical canal seepage loss evaluation for different lining and crack conditions. Water, 13(21), 3135. https://doi.org/10.3390/w13213135 [9] Al-Nedawi, N. M., & Al-Hadidi, M. T. (2020). Finite element analysis of seepage for Hemrin earth dam using Geo-Studio software. Diyala Journal of Engineering Sciences, 13(3), 66–76. https://doi.org/10.24237/djes.2020.13307 [10] Kheiri, G., Javdanian, H., & Shams, G. (2020). A numerical modeling study on the seepage under embankment dams. Modeling Earth Systems and Environment, 6, 1075–1087. https://doi.org/10.1007/s40808-020-00742-9 [11] Kosichenko, Y. M., &Baev, O. A. (2021). Selection of an effective seepage-control lining for canals made of traditional and geosynthetic materials. Power Technology and Engineering, 54, 819–824. https://doi.org/10.1007/s10749-021-01293-4 [12] Omofunmi, O., Kolo, J., Oladipo, A., Diabana, P., & Ojo, A. (2017). A review on effects and control of seepage through earth-fill dam. Current Journal of Applied Science and Technology, 22, 1–11. https://doi.org/10.9734/CJAST/2017/28538 [13] Jamel, A. (2016). Seepage losses from trapezoidal earth canals with an impervious layer. Water Practice and Technology, 16(2), 530–540. https://doi.org/10.2166/wpt.2021.038 [14] Peng, Y. F., & Hao, D. (2013). Seepage characteristics analysis of geomembrane earth-rock dams. Advanced Materials Research, 739, 278–282. https://doi.org/10.4028 [15] Zhang, L. M. (2013). Study on geosynthetics in canal seepage control project. Applied Mechanics and Materials, 329, 40–44. https://doi.org/10.4028 [16] Fell, R., Wan, C. F., Cyganiewicz, J., & Foster, M. (2003). Time for development of internal erosion and piping in embankment dams. Journal of Geotechnical and Geoenvironmental Engineering, 129(4), 307–314. https://doi.org/10.1061/(ASCE)1090-0241(2003)129:4(307)

Copyright

Copyright © 2026 Vikas Gautam. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.