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
Operational Guidelines for the Implementation of the World Heritage Convention the World Heritage List and the way to it is to be found in Chapter 2. Before properties can be proposed for inscription as a World Heritage Site, they must be on the tentative lists of the States Parties. The properties must be of Outstanding Universal Value (OUV) which means "cultural and/or natural significance which is so exceptional as to transcend national boundaries and to be of common importance for present and future generations of all humanity". There are ten criteria for the assessment of OUV. Criteria (i)-(vi) for cultural heritage, (vii)-(x) for natural heritage. Properties nominated under criteria (i)