Liners help protect nearby wetlands during winter runoff events by keeping stored manure or wastewater from escaping when soils are frozen and unable to absorb moisture. During snowmelt, water moves quickly across the surface and can carry nutrients long distances, especially if a lagoon or pit is leaking into the surrounding ground.
A liner creates a dependable barrier that prevents this seepage, reducing the amount of nitrogen and phosphorus that could otherwise wash into sensitive wetland areas. By stabilizing the storage system during freeze-thaw cycles, liners lower the risk of sudden overflows or unnoticed leaks. This containment helps preserve the natural balance of wetlands, which can be easily disrupted by even small increases in nutrient levels during winter runoff.
