--- title: "Case Study: Ocean HDPE Liner 500 Micron for Water Retention in Chhindwara (18,000 SQM)" date: 2025-07-28 author: "Sales Team" url: https://oceangeosynthetics.com/hdpe-liner-500-micron-chhindwara-project/ --- July 28, 2025 | [Case Studies](https://oceangeosynthetics.com/category/case-studies/) # Case Study: Ocean HDPE Liner 500 Micron for Water Retention in Chhindwara (18,000 SQM) ## Introduction For an agricultural water retention pond in **Chhindwara district, Madhya Pradesh**, **Ocean Non Wovens supplied 18,000 SQM of [HDPE Liner](https://oceangeosynthetics.com/products/ocean-geomembrane/high-density-polyethylene-sheets-hdpe/) 500 Micron**. The pond was commissioned by an agri-development initiative in 2025 to store monsoon water for year-round irrigation. Chhindwara is a major farming district on the Satpura plateau, and its irrigation depends heavily on the monsoon. Seasonal rain is uneven and groundwater levels have been falling, so storing runoff in a lined pond is one of the most direct ways to keep water available through the dry months. ## Why line a farm pond with HDPE? Unlined ponds lose water to seepage, and clay-lined or concrete-lined ponds bring their own erosion, cracking and maintenance problems. An HDPE (high density polyethylene) [geomembrane](https://oceangeosynthetics.com/products/ocean-geomembrane/) stops seepage into the subsoil almost entirely, which is why it is now widely used for farm ponds. **What HDPE offers:** - **Low permeability:** prevents seepage into the subsoil. - **Chemical resistance:** withstands contact with fertilisers and agrochemicals in runoff. - **Durability:** service life depends mainly on how much of the liner is exposed to sunlight; covered liners last far longer than exposed ones. - **UV stabilisation:** carbon black in the sheet protects it against sunlight, slowing the oxidation that eventually ages any exposed polyethylene. - **Flexibility:** conforms to irregular pond shapes. ## Project details **Client objective:** a durable, low-maintenance [water storage pond](https://oceangeosynthetics.com/products/pond-liner-manufacturers/) able to supply a farm area of 100+ acres through all seasons, especially during dry spells. **Product used:** Ocean Non Wovens **HDPE Liner 500 Micron**, supplied as custom-cut, factory-welded panels delivered to site. **Total area covered:** **18,000 SQM**, covering the pond base, side slopes and buffer zone. Factory-welding panels to size reduces the number of field seams, which is where most of the time, and much of the leak risk, sits on a pond of this size. ## Technical specifications of the HDPE liner | **Parameter** | **Specification** | | --- | --- | | Thickness | 500 Micron (0.5 mm) | | Density | ≥ 0.94 g/cm³ | | Elongation at Break | ≥ 600% | | Seam Strength | ≥ 90% of parent material | | UV Resistance | Tested by UV exposure for 1600 hrs (GRI-GM13 method) | | Standards referenced | IS 15351:2008 & GRI-GM13 | Density of 0.94 g/cm³ or more is what defines a geomembrane as HDPE under GRI-GM13. That specification also sets a 1600-hour UV exposure test, after which the sheet must keep a minimum share of its antioxidant content (measured as high-pressure oxidative induction time). ## Installation methodology 1. **Site preparation:** the pond was excavated and the subgrade compacted to a smooth, debris-free surface. 2. **Liner deployment:** pre-welded panels were laid with a 100 mm overlap to ensure seam strength and uniform coverage. 3. **Welding and QA/QC:** panels were joined by dual wedge welding and extrusion welding. All weld seams were checked by vacuum box and air pressure testing. 4. **Protective layer:** a non-woven [geotextile](https://oceangeosynthetics.com/products/geotextile-manufacturers/) cushion was placed in rocky sections to prevent puncture. On a pond, the liner is also anchored in a trench along the crest of the embankment so it cannot slide down the slopes or lift in wind. ## Outcome The project produced a working agricultural pond that now gives: - **Water availability:** year-round water for the farmland it serves, including dry spells. - **Seepage control:** water retention improved substantially, including over the sandy subsoil areas. - **Lower irrigation costs:** less pumping, because stored water no longer drains away. - **Minimal maintenance:** no visible cracks, punctures or algae build-up under full sun exposure (as of July 2025). ## Points engineers should check on farm pond liners ### Slopes A liner protects pond slopes from erosion by rain and wave action. Smooth HDPE has low interface friction, though, so side slopes must be designed for it, with a geotextile under the liner where the ground is rough and a proper anchor trench at the crest. ### Salinity and pH The local water tested high in dissolved salts (EC ~2.1 dS/m). HDPE is unaffected by salts at these levels, and [Ocean’s HDPE liner](https://oceangeosynthetics.com/water-retention-with-hdpe-liner-750-micron/) maintained its structural stability with no signs of chemical degradation. ### Biological resistance HDPE does not rot and is not a food source for microbes, so it does not degrade biologically. Algae in a pond depends on nutrients and sunlight rather than the liner, so water quality still needs managing. ### Temperature swings Daytime temperatures in Chhindwara reach about 45°C in summer and drop below 10°C on winter nights. HDPE expands in the heat and contracts in the cold, so panels are laid with some slack to avoid tension at corners and toes. The Chhindwara liner showed no shrinkage damage or cracking. ## Why Ocean Non Wovens Ocean Non Wovens supplies HDPE liners with engineering support for water retention projects. Its HDPE liners are: - Manufactured in ISO 9001:2015 certified facilities - Tested to ASTM and BIS standards - Supported by a technical team for on-site supervision - Supplied to suit Indian ground conditions and farm requirements Ocean supplies small farm ponds and large industrial water bodies. Contact Ocean Non Wovens or explore the product range at [www.oceangeosynthetics.com](https://oceangeosynthetics.com). ## Frequently asked questions ### Is HDPE liner suitable for the climate in central India? Yes. Ocean’s HDPE liners are designed for high surface temperatures (up to 60°C on an exposed black sheet), UV exposure and repeated expansion and contraction, all common in central India. ### How much area does one roll of Ocean HDPE Liner cover? It depends on the roll dimensions and thickness. A single roll may cover between 300–500 SQM. For large projects like Chhindwara (18,000 SQM), factory-welded custom panels are supplied to cut on-site welding time. Planning a farm pond of your own? Our guide on [sizing and pricing a pond liner](https://oceangeosynthetics.com/the-ultimate-guide-to-pond-liner-price/) explains how to work out the liner area and which details to send a supplier. ### Where can I buy Ocean HDPE Liners for my project? Contact Ocean Non Wovens directly via [www.oceangeosynthetics.com](https://oceangeosynthetics.com) or through a regional distributor. Ocean offers consultation, delivery and after-sales support for projects across India. 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