Field drainage is installed to rapidly remove excess soil water to reduce or eliminate waterlogging and return soils to their natural field capacity. Drains can be used to control a watertable or to facilitate the removal of excess water held in the upper horizons of the soil. A good drainage system will reduce the risk of detrimental waterlogging to acceptable levels. AHDB have produced a cross divisional guide that looks at the principles, installation and maintenance and how it can benefit a business.