River Aller

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For the main tributary of the Weser in North Germany, see Aller. For the river in Asturias, see Aller (Asturian river).
River Aller
Allerford bridge.jpg
Packhorse Bridge, Allerford
Country England
State Somerset
Region Exmoor
District West Somerset
 - left River Horner
City Allerford
 - location Holnicote, West Somerset, Exmoor, Somerset, England
 - coordinates 51°11′54″N 3°32′52″W / 51.19833°N 3.54778°W / 51.19833; -3.54778
Mouth Porlock Bay, Bristol Channel
 - location near Hurlestone Point, Somerset, England
 - elevation 0 m (0 ft)
 - coordinates 51°13′31″N 3°35′10″W / 51.22528°N 3.58611°W / 51.22528; -3.58611Coordinates: 51°13′31″N 3°35′10″W / 51.22528°N 3.58611°W / 51.22528; -3.58611

The River Aller is a small river on Exmoor in Somerset, England.

It rises as several small streams around Tivington and Huntscott and flows through the Holnicote Estate passing Holnicote and through Allerford, where it passes under a packhorse bridge of medieval origin.[1] It then joins the River Horner, which flows into Porlock Bay near Hurlstone Point on the Bristol Channel.[2]

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.[3]


  1. ^ "Packhorse Bridge". Images of England. Retrieved 2008-01-05. 
  2. ^ "River Aller". Somerset Rivers. Retrieved 23 September 2012. 
  3. ^ "West Somerset Catchment Flood Management Plan" (PDF). Environment Agency. p. 12. Retrieved 23 September 2012.