River Aller

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River Aller
Allerford bridge.jpg
Packhorse Bridge, Allerford
DistrictWest Somerset
Physical characteristics
 ⁃ locationHolnicote, West Somerset, Exmoor, Somerset, England
 ⁃ coordinates51°11′54″N 3°32′52″W / 51.19833°N 3.54778°W / 51.19833; -3.54778
MouthPorlock Bay, Bristol Channel
 ⁃ location
near Hurlestone Point, Somerset, England
 ⁃ 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
 ⁃ elevation
0 m (0 ft)
Basin features
 ⁃ leftRiver Horner

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". 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.