 Discharge into the River Trent is through the culverts when the water level in the river is low enough, and through the pumps when it is not.A number of the pumping stations within the Chase are reversible, so that water is pumped from the drainage ditches to the high level carriers when there is a risk of flooding, and from the carriers to the ditches when water is needed for irrigation.The Environment Agency also have pumping stations at Belton Grange, Goodcop and Low Bank, which pump into the Hatfield Waste Drain..