River Culm

River Culm
River Culm at Culmstock
Map of the River Culm and its catchment in Devon and Somerset, UK, with the inset showing the location in Devon.
Location
Country	England
County	Devon
Town	Cullompton
Physical characteristics
Source	Culmhead
• coordinates	50°56′16″N 3°06′35″W / 50.93778°N 3.109821°W / 50.93778; -3.109821
• elevation	800 ft (240 m)
Mouth	River Exe
• coordinates	50°45′45″N 3°30′54″W / 50.7625°N 3.515°W / 50.7625; -3.515
Length	17 mi (27 km)
Discharge
• location	Wood Mill[1]
• average	3.77 m3/s (133 cu ft/s)[1]

The River Culm flows through the Devon Redlands^[2] in Devon, England and is the longest tributary of the River Exe.^[3] It rises in the Blackdown Hills at a spring near RAF Culmhead in Somerset, and flows west through Hemyock, then Culmstock (in the Culm Valley) to Uffculme. The river turns south, through Cullompton (and alongside the M5 motorway), skirting the northern boundary of Killerton Park to join the River Exe on the north-western outskirts of Exeter.^[4] The name of the river is thought to mean 'knot' or 'tie', in reference to the river's twists and loops.^[5]