River Aller

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

River Aller
Packhorse Bridge, Allerford
DistrictWest Somerset
Physical characteristics
  locationHolnicote, West Somerset, Exmoor, Somerset, England
  coordinates51°11′54″N 3°32′52″W
MouthPorlock Bay, Bristol Channel
near Hurlestone Point, Somerset, England
51°13′31″N 3°35′10″W
0 m (0 ft)
Basin features
  leftRiver Horner

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". historicengland.org.uk. 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. Archived from the original (PDF) on 17 December 2012. Retrieved 23 September 2012.
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