Wet soils in the UK are a common problem and while surface drainage can remove excess surface water, it is the soil profile itself that needs to be drained in many situations. This allows the pastures and crops to reach their potential production and stock damage by treading and compaction to be reduced.
Mole drainage is widely used in heavy soils to improve productivity of pastures and crops. Mole drainage, on the right soil type and when installed correctly, can help reduce waterlogging problems substantially. Mole drains are used in heavy soils where a clay subsoil near moling depth (400 to 600 cm) prevents downward movement of ground water. Mole drains are a more sophisticated drainage system than open drains. Mole drains do not drain groundwater but removes water as it enters from the ground surface.