Upgrades that improve winter nutrient containment focus on strengthening storage structures so they stay dependable through freeze-thaw cycles and sudden weather swings. High-quality synthetic liners, especially RPE, provide a strong barrier that prevents seepage when soil movement or ice formation would normally create pathways for leaks.
Reinforcing berms, repairing erosion, and reshaping slopes before winter can also help keep runoff from entering or leaving the storage area. Some operations increase freeboard capacity or install overflow protection to handle unexpected rain-on-snow events. Improved drainage around the lagoon reduces pressure on the embankments by directing surface water away from the structure.
