The Dyke is an elongated artificial lake in High Wycombe created by the flooding of an old road within the former grounds of the Wycombe Abbey School. The Dyke and a wooded area next to it was donated to the Chepping Wycombe Corporation (later the council) by the Marquis of Lincolnshire in 1923. The Dyke is fed by streams and has a separate watercourse to the adjacent river Wye.