Main Dyke is a water channel running through

the Fylde The Fylde () is a coastal plain in western Lancashire, England. It is roughly a square-shaped peninsula, bounded by Morecambe Bay to the north, the Ribble estuary to the south, the Irish Sea to the west, and the foot of the Bowland hills to ...

area of

Lancashire Lancashire ( , ; abbreviated ''Lancs'') is a ceremonial county in North West England. It is bordered by Cumbria to the north, North Yorkshire and West Yorkshire to the east, Greater Manchester and Merseyside to the south, and the Irish Sea to ...

, England. It is an outflow of the largely drained

Marton Mere Marton Mere is a mere (lake) and Local Nature Reserve in Blackpool, Lancashire, England. It is located near to the Blackpool districts of Marton and Mereside and the village of Staining. It is recognised as a Site of Special Scientific Interes ...

Blackpool Blackpool is a seaside town in Lancashire, England. It is located on the Irish Sea coast of the Fylde peninsula, approximately north of Liverpool and west of Preston, Lancashire, Preston. It is the main settlement in the Borough of Blackpool ...

, though Marton Mere originally released its waters via Spen Brook in the opposite direction. The Main Dyke joins the

River Wyre The River Wyre, in Lancashire, England, flows into the Irish Sea at Fleetwood. It is 28 miles (45 km) long and has a sheltered estuary which penetrates deep into the Fylde peninsula. Etymology The name ''Wyre'' is of pre-Roman, likely, ...

at Skippool, appearing to follow the course of an earlier "Skippon River" (named as such on John Speed's map of the county).

References

Rivers of the Borough of Fylde The Fylde 1Main {{England-river-stub