River Otter, Devon

River Otter
The tidal estuary of the Otter. The river flows left to right, in front of the distinctive hill. The marsh (foreground) is separated from the sea by a steep pebble bar (right).
Map of the River Otter and its catchment.
Location
CountryEngland
CountiesSomerset, Devon
Physical characteristics
Source 
  locationBlackdown Hills, Somerset, England
  elevation275 m (902 ft)
Mouth 
  location
Budleigh Salterton, Devon, England
  elevation
0 m (0 ft)
Length44 km (27 mi)
Discharge 
  locationDotton
  average3.12 m3/s (110 cu ft/s)
  minimum0.46 m3/s (16 cu ft/s)(24 August 1976)
  maximum346.7 m3/s (12,240 cu ft/s)(11 July 1968)
Discharge 
  locationFenny Bridges
  average2.13 m3/s (75 cu ft/s)
Basin features
Tributaries 
  rightRiver Tale

The River Otter is a river that rises in the Blackdown Hills just inside the county of Somerset, England near Otterford, then flows south through East Devon. It enters the English Channel at the western end of Lyme Bay, part of the Jurassic Coast, a UNESCO World Heritage Site. The Permian and Triassic sandstone aquifer in the Otter Valley is one of Devon's largest groundwater sources, supplying drinking water to 200,000 people.