 The reservoir covers , has a mean depth of 15.3 m, a maximum depth of 17.8 m and holds 4,300 million gallons ( million litres).The height of the embankment walls above ground level is 15 m, and the perimeter is 4,400 m.

Bewick's swans have been spotted on this reservoir.In the winter of 1963 100,000 gulls were counted roosting at the reservoir.