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

River Aller
Packhorse Bridge, Allerford
Location
Country	England
State	Somerset
Region	Exmoor
District	West Somerset
City	Allerford
Physical characteristics
Source
• location	Holnicote, West Somerset, Exmoor, Somerset, England
• coordinates	51°11′54″N 3°32′52″W
Mouth	Porlock Bay, Bristol Channel
• location	near Hurlestone Point, Somerset, England
• coordinates	51°13′31″N 3°35′10″W
• elevation	0 m (0 ft)
Basin features
Tributaries
• left	River 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]

References