River Avon (Burrator Reservoir)

River Avon (Burrator Reservoir)
Name	River Avon (Burrator Reservoir)
Other name	Avon (Devon)
Country	England
County	Devon
Source	Dartmoor
Mouth	River Plym
Basin countries	United Kingdom
Length	14 km (approx.)

River Avon (Burrator Reservoir) The River Avon rising on Dartmoor and impounded at Burrator Reservoir is a short moorland river in Devon that flows through a landscape shaped by granite tors, peat bogs, and upland commons. The catchment has been shaped by Neolithic activity, medieval tin working, and Victorian water supply projects, linking the Avon to regional infrastructure including Plymouth and the South West Coast Path. The river is notable for upland hydrology, reservoir engineering, riparian ecology, and recreational use within a network of protected areas such as Dartmoor National Park.

Course and Geography

The Avon rises on the high plateaus of Dartmoor near features like Two Bridges, Hameldown and the Dartmoor tors such as Yes Tor and High Willhays, running generally south-westwards into Burrator Reservoir on the western fringe of the moor. Below the dam the watercourse continues toward the confluence with the River Plym and the urban fringe of Plymouth, passing historic sites including Ivybridge and remnants of Wheal mining infrastructure. The valley cuts through metamorphic and granite lithologies and is characterized by peat-forming blanket bogs, wet heath around Burrator and steep wooded banks of oak and ash in lower reaches, linking geomorphology studied by geomorphologists and mapped by the Ordnance Survey.

Hydrology and Water Quality

The Avon’s flow regime is influenced by high annual precipitation typical of Dartmoor, storm runoff from impermeable granite, and regulation by Burrator Reservoir damworks constructed in the late 19th century. Hydrologists reference gauging data collected by the Environment Agency and reservoir operation records held by local water undertakers to model baseflow, peak discharge and catchment response times. Water quality reflects upland inputs: acidic waters from peat leachate, metal traces from historic tin mining and agricultural nutrients from lower valley fields; monitoring aligns with standards set by the European Union Water Framework Directive and national guidance from the Department for Environment, Food and Rural Affairs. Sediment dynamics are important for reservoir capacity and are studied alongside climate projections from the Met Office.

History and Human Use

Human interaction with the Avon catchment spans prehistoric trackways, Bronze Age enclosures on the moor, and medieval tin streaming tied to the Dartmoor tin-mining system, later augmented by Victorian industrial and municipal demands. The construction of Burrator Reservoir (completed 1898) was driven by water supply needs for Plymouth and associated naval bases such as Devonport Dockyard, reflecting imperial-era urbanisation and engineering by firms then collaborating with the Great Western Railway and regional civic bodies. Later 20th-century forestry plantations by agencies like the Forestry Commission altered riparian land use, while conservation designations by Natural England and inclusion within Dartmoor National Park have influenced planning and heritage protection, including archaeological records held by the Dartmoor National Park Authority.

Ecology and Wildlife

The Avon catchment supports upland and riparian assemblages: heather moorland with gorse on bog margins, upland grassland communities, and riparian woodland of alder, willow and hazel. Fauna includes breeding birds such as Dartford warbler relatives, curlew, meadow pipit and birds of prey including merlin and peregrine falcon on adjacent tors; aquatic species include salmon and brown trout where passage is possible, with barriers created by reservoir infrastructure affecting migration studied by fisheries biologists. Invertebrate assemblages include peatland-specialist beetles recorded in surveys by regional groups and volunteers from organisations like the Royal Society for the Protection of Birds and local naturalist societies. Invasive plants and non-native fish management are subjects of ongoing work by the Environment Agency and local conservation trusts.

Recreation and Access

Burrator Reservoir and the Avon valley provide recreational opportunities integrated with regional visitor networks such as the South West Coast Path feeder routes, Dartmoor Way and local walking circuits promoted by Visit Devon and community ramblers groups. Activities include shoreline walking, birdwatching, landscape photography, licensed angling for trout managed by district angling clubs, and cycling on permissive tracks linking to Plymouth and Ivybridge. Access is managed to balance public enjoyment and habitat protection under bylaws enforced by the Dartmoor National Park Authority and landowners including private estates and the Forestry Commission.

Conservation and Management

Management of the Avon catchment involves multi-stakeholder governance: water companies operating Burrator Reservoir, statutory bodies such as the Environment Agency and Natural England, and local authorities including West Devon and South Hams. Conservation priorities include peatland restoration funded through agri-environment schemes, riparian reforestation, fish passage improvements informed by practices from River Restoration Centre, and cultural heritage preservation coordinated with the National Trust where applicable. Catchment partnerships draw on research from institutions like the University of Exeter, policy frameworks from the UK Government, and community stewardship by local volunteer groups to adaptively manage flood risk, water quality, biodiversity and public access in the face of climate change scenarios developed by the Met Office.

Category:Rivers of Devon