The River Aller is a small river 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 Simonsbat ...

Somerset ( en, All The People of Somerset) , locator_map = , coordinates = , region = South West England , established_date = Ancient , established_by = , preceded_by = , origin = , lord_lieutenant_office =Lord Lieutenant of Somerset , lor ...

England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe ...

. It rises as several small streams around Tivington and Huntscott and flows through the

Holnicote Estate Holnicote (pronounced "Hunnicutt") in the parish of Selworthy, West Somerset, England, is a historic estate consisting of 12,420 acres (5,026 hectares) of land, much situated within the Exmoor National Park. There have been several ho ...

passing Holnicote and through

Allerford Allerford is a village in the county of Somerset, England, located within Exmoor National Park, and is part of the parish of Selworthy in the district of Somerset West and Taunton. It appears in Domesday Book as "Alresford – forda Ralph ...

, where it passes under a

packhorse A packhorse, pack horse, or sumpter refers to a horse, mule, donkey, or pony used to carry goods on its back, usually in sidebags or panniers. Typically packhorses are used to cross difficult terrain, where the absence of roads prevents the use of ...

bridge of medieval origin. It then joins the

River Horner The River Horner, also known as Horner Water, rises near Luccombe on Exmoor, Somerset, and flows past Porlock into Porlock Bay near Hurlstone Point on the Bristol Channel. The river flows into the sea though a shingle ridge at Bossington beac ...

, which flows 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 Irelan ...

near Hurlstone Point on the

Bristol Channel The Bristol Channel ( cy, Môr Hafren, literal translation: "Severn Sea") is a major inlet in the island of Great Britain, separating South Wales from Devon and Somerset in South West England. It extends from the lower estuary of the River S ...

. Because of the surrounding geology the area has been at risk of flooding. To help manage this risk telemetry monitoring of flows and a siren warning system have been proposed.

References

{{DEFAULTSORT:Aller, River Rivers of Somerset Exmoor