Hillylaid Pool (known colloquially as The Dyke)[1] is a water channel running through the Fylde and Wyre areas of Lancashire in England.

It is 4.55 miles (7.32 km) long,[2] and it is part of the Fleetwood Peninsula Tributary catchment area.

It joins the River Wyre at Stanah, shortly after merging with another watercourse to the northwest of Flint's Caravan Park.

6,000 cubic metres (210,000 cu ft) of water can now be stored there, allowing capacity during periods of heavy rainfall and providing habitats for wildlife.

Hillylaid Pool was straightened in the 1970s, leaving a stagnant paleochannel; this project reconnected the old channel to the existing watercourse.