--- title: "Case Study: Pond Lining Project in Surat, Gujarat" date: 2026-01-09 author: "Sales Team" url: https://oceangeosynthetics.com/pond-lining-in-surat-with-1000-micron-hdpe-liner-study-india/ --- January 9, 2026 | [Case Studies](https://oceangeosynthetics.com/category/case-studies/), [Pond liner](https://oceangeosynthetics.com/category/pond-liner/) # Case Study: Pond Lining Project in Surat, Gujarat **Product Used:** Ocean [HDPE Liner](https://oceangeosynthetics.com/products/ocean-geomembrane/high-density-polyethylene-sheets-hdpe/) 1000 Micron **Quantity:** 18,000 SQM **Location:** Surat, Gujarat Ocean Non Wovens supplied and installed 18,000 square metres of Ocean HDPE Liner 1000 Micron for a large agricultural and water retention pond in Surat, Gujarat. The pond stores monsoon runoff and irrigation water for use through the dry season, so every litre lost to seepage is water the farm does not have in summer. Clay and concrete linings tend to seep, crack and need regular repair; a welded HDPE liner gives a continuous barrier between the water and the soil and supports [water conservation](https://oceangeosynthetics.com/suitable_sectors/water/) at this scale. ## What the client needed - Reliable water retention with minimal seepage - Long service life - Resistance to sun, heat and weathering - Lower cost than traditional lining materials Ocean Non Wovens recommended an HDPE liner 1000 micron (1 mm) thick. Grades around 1 mm are commonly chosen for larger ponds and reservoirs, where greater water depth means higher hydrostatic pressure on the liner and more load pressing it onto any stone in the subgrade. The extra thickness over 500 micron farm-pond grades buys puncture resistance and a longer life. ## Why HDPE for pond lining - **Impermeability:** HDPE geomembranes have an equivalent hydraulic conductivity of the order of 1×10⁻¹³ cm/s, so seepage through an intact, well-welded sheet is negligible. In practice, losses come from holes and poor seams, not through the sheet. - **Durability:** HDPE is chemically inert to the acids and alkalis found in soil and water, and carbon-black stabilisation protects it from UV and weathering. - **Chemical and biological resistance:** it does not rot or degrade in contact with organic matter, fertiliser residues or agricultural runoff. - **Flexibility:** the sheet conforms to irregular pond contours and tolerates some subgrade movement. Because it cuts seepage losses and needs little maintenance, an HDPE liner usually works out cheaper over the life of a pond than clay or concrete. See our [pond liners](https://oceangeosynthetics.com/products/pond-liner-manufacturers/) page for available grades. ## Ocean HDPE Liner 1000 Micron - **Thickness:** 1000 micron (1 mm), with more puncture resistance and a longer life expectancy than thinner sheets. - **Material:** polyethylene resin with carbon black and additives for UV stability and weather resistance. - **Water retention:** near-complete containment, which is what conserves irrigation water through dry spells. ## Installation The base and slopes of the excavation are trimmed and cleared of sharp objects and debris. On many pond jobs a [non-woven geotextile](https://oceangeosynthetics.com/products/geotextile-manufacturers/) is laid beneath the geomembrane as a cushion against puncture; whether one is needed depends on the subgrade. Watertight seams depend on correct overlaps and thermal fusion welding. Across 18,000 SQM, the panels were overlapped and fusion welded to form one continuous impermeable barrier. On a pond this size, seams are normally checked by air-pressure testing of double-wedge welds, and the liner edges are locked into a perimeter anchor trench. ## Site challenges **Variable soil:** Surat’s alluvial soils vary across a large footprint, with soft spots that can settle unevenly once the pond is full. A 1 mm sheet tolerates local deformation and resists puncture better than a thinner one, and careful subgrade compaction keeps settlement within what the liner can follow. **Water pressure and depth:** thicker liners are recommended where hydrostatic pressure is higher, because thinner sheets are more vulnerable to puncture and stress cracking. The 1000 micron grade reduces that risk. **Sun and runoff:** south Gujarat’s strong sun and the agricultural runoff entering the pond call for UV resistance and chemical inertness, both properties of carbon-black stabilised HDPE. ## Results After installation, the pond held water with negligible seepage, conserving stored water through the dry months. The client reported that water levels stayed stable for weeks after filling. Long-term value on a job like this comes from three things: lower repair and maintenance spend than a traditional lining, UV resistance that holds up in intense sun, and installation quality (panel handling, welding and site preparation), which matters as much as the material itself. More examples are in our [case studies](https://oceangeosynthetics.com/case-studies/), including a 1000 micron liner over geotextile for a [water storage pond in Port Blair](https://oceangeosynthetics.com/hdpe-liner-geotextile-water-storage-pond-port-blair/). ## Work with Ocean Non Wovens Ocean Non Wovens supplies and installs HDPE geomembranes for infrastructure, agriculture and environmental projects. If you are planning a pond or water containment project and need help choosing the liner grade and planning installation, contact the Ocean team. 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