The liner bubbling higher than the pond’s water level can be caused by one or more of the following factors:
Water Accumulation:
- Groundwater may have seeped underneath the liner, creating pressure that pushes it upwards.
Air or Gas Build-Up:
- Trapped air or gases, such as methane or other naturally occurring gases from decomposing organic matter, may accumulate beneath the liner.
Combination of Both:
- A mix of water and gases under the liner could amplify the issue, resulting in the noticeable bubbling effect.
Proper investigation is required to determine the exact cause and implement the appropriate solution.