The river is long, and flows in a generally south-westerly direction throughout its course. It rises at Meavy Head, close to
Princetown, and flows across Walkhampton Common, through Norsworthy and adjacent plantations, and into
Burrator Reservoir. It leaves the reservoir at the main dam, and flows past the village of
Meavy before joining the
River Plym at the upper end of
Bickleigh Vale. The entirety of the river is inside Dartmoor National Park. Most of the valley surrounding the river's southern section is wooded, and has been described as a semi-neutral ancient woodland. The north section, beyond Burrator Reservoir, is less covered as it is towards the centre of Dartmoor and features several rock
tors near the river. ==History==