The River Horner, also known as Horner Water, rises near Luccombe on

Exmoor Exmoor () is loosely defined as an area of hilly open moorland in west Somerset and north Devon in South West England. It is named after the River Exe, the source of which is situated in the centre of the area, two miles north-west of Simons ...

Somerset Somerset ( , ), Archaism, archaically Somersetshire ( , , ) is a Ceremonial counties of England, ceremonial county in South West England. It is bordered by the Bristol Channel, Gloucestershire, and Bristol to the north, Wiltshire to the east ...

, and flows past

Porlock Porlock is a coastal village in Somerset, England, west of Minehead. At the 2011 census, the village had a population of 1,440. In 2017, Porlock had the highest percentage of elderly population in England, with over 40% being of pensionable ...

into

Porlock Bay Porlock Bay is on the Bristol Channel, between Hurlstone Point and Porlock Weir in Somerset, England. The coastline includes shingle ridges, salt marshes and a submerged forest. In 1052 the Saxon king, Harold, landed at Porlock Bay from Ireland ...

near

Hurlstone Point Hurlstone point () is a promontory of land between Porlock Weir and Minehead in the Exmoor National Park on the coast of Somerset, England England is a Countries of the United Kingdom, country that is part of the United Kingdom. It is ...

on the

Bristol Channel The Bristol Channel (, literal translation: "Severn Sea") is a major inlet in the island of Great Britain, separating South Wales (from Pembrokeshire to the Vale of Glamorgan) and South West England (from Devon to North Somerset). It extends ...

. The river flows into the sea though a shingle ridge at Bossington beach, where it forms part of the

Porlock Ridge and Saltmarsh Porlock Bay is on the Bristol Channel, between Hurlstone Point and Porlock Weir in Somerset, England. The coastline includes shingle ridges, salt marshes and a submerged forest. In 1052 the Saxon king, Harold, landed at Porlock Bay from Ireland ...

Site of Special Scientific Interest A Site of Special Scientific Interest (SSSI) in Great Britain, or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland, is a conservation designation denoting a protected area in the United Kingdom and Isle ...

. When the river level is very high, flood water builds up behind the ridge, causing it to breach.

History

Evidence that the river was previously diverted to power iron workings has been found. The remains of an iron

hammer mill A hammer mill, hammer forge or hammer works was a workshop in the pre-industrial era that was typically used to manufacture semi-finished, wrought iron products or, sometimes, finished agricultural or mining tools, or military weapons. The featur ...

and 55m long, breached,

embankment dam An embankment dam is a large artificial dam. It is typically created by the placement and compaction of a complex semi-plastic mound of various compositions of soil or rock. It has a semi-pervious waterproof natural covering for its surface ...

were excavated alongside the river in 1996.

References

Rivers of Somerset Exmoor {{England-river-stub