Area covered from Constantine Bay to Port Isaac and the River from Padstow, Wadebridge, Bodmin and Camelford. The information will be of use to the 90,000 birdwatchers who visit the area each year.

The estuary is considered tidal as far as Polbrock which is about 2 miles upriver from Wadebridge, this was because barges used to navigate their way up the river as far as Polbrock.

The fundus of the river is owned by the Duchy of Cornwall, but the Harbour Commissioners have responsibility for all water activity and together with the Environment Agency, all conservation issues affecting the estuary.