River Otter, Devon River Otter, Devon The River Otter rises in the Blackdown Hills just inside the county of Somerset, England near Otterford, then flows south for some 32 km through East Devon to 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. The river's source is north of Otterford, where a stream feeds the Otterhead Lakes: and then through Churchstanton before entering Devon. The river flows through a
Coastline of the United Kingdom the coastline of the main island, Great Britain, as 11,072.76 miles rounding to 11,073 miles (17,820 km). The British Cartographic Society points out that "The true answer is: it depends!". If the larger islands are added, the coastline as measured by the standard method at Mean High Water Mark rises to about 19,491 miles (31,368 km). According to the "CIA Factbook", the length of the UK coastline is around 12,429 km or 7,723 miles, although no details are provided about how this figure was calculated. On the basis of EU Marine Strategy Framework Directive boundaries, the UK coastline can be