Firth of Tay
The Firth of Tay (Scottish Gaelic: Linne Tatha) is a firth in Scotland between the council areas of Fife, Perth and Kinross, the City of Dundee and Angus, into which Scotland's largest river in terms of flow, the River Tay empties. The firth has a maximum width of at Invergowrie.
Kayaking and canoeing on the River Thames
The tidal section is used by sea kayakers and experienced tourers. Above Teddington Lock in London the Thames is freshwater, with levels controlled by a series of weirs which are managed by the Environment Agency.