The Dyke in High Wycombe is an artificial lake 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.
Now the Dyke is a haven for nature and also used by pleasure boaters and people enjoying a walk!