List of rivers of Scotland
Listing by length
Various measurements are provided for the lengths of Scottish rivers. The table below distinguishes between the river alone and the river plus tidal waters, which many sources use.

List of rivers of Scotland

Section Title: Listing by length
Table Section Text: Various measurements are provided for the lengths of Scottish rivers. The table below distinguishes between the river alone and the river plus tidal waters, which many sources use.

River	River Length	River + Estuary Length	Notes

River Tay	155 kilometres (96 mi)	185 kilometres (115 mi)	The Tay-Tummel-Gaur from its source, Coirean Lochan by Stob Ghabhar, to a line from Budden Ness to Tentsmuir Point.

River Spey	168.6 kilometres (104.8 mi)	168.6 kilometres (104.8 mi)	The Spey is the longest stretch of river in Scotland bearing the same name throughout, though that does include Loch Insh.

River Clyde	158 kilometres (98 mi)	168.4 kilometres (104.6 mi)	The river length is measured to Dumbarton Rock, the estuary to the Firth of Clyde at Ardmore Point.

River Tweed	162 kilometres (101 mi)	162 kilometres (101 mi)	The lower reaches of the Tweed are in England.

River Dee, Aberdeenshire	143 kilometres (89 mi)	143 kilometres (89 mi)

River Forth	113 kilometres (70 mi)	136 kilometres (85 mi)	The river is measured to the Kincardine Bridge, the estuary to easternmost point of Inchgarvie by the Forth Bridge.

River Don	135 kilometres (84 mi)	135 kilometres (84 mi)

River Ness	109 kilometres (68 mi)	109 kilometres (68 mi)	The Ness-Oich-Garry. No account is taken of the Inverness Firth.

River Findhorn	103 kilometres (64 mi)	103 kilometres (64 mi)

River Nith	101 kilometres (63 mi)	101 kilometres (63 mi)	At low tide, the sea recedes to such an extent that the length of the river is extended by 13 kilometres (8.1 mi).

River Deveron	100 kilometres (62 mi)	100 kilometres (62 mi)

River Beauly	82 kilometres (51 mi)	94 kilometres (58 mi)	The Beauly-Glass-Affric with the estuary measured to the Kessock Bridge.

River Dee, Galloway	88 kilometres (55 mi)	88 kilometres (55 mi)	The Dee-Ken-Water of Deuch. At low tide, the length is extended by 2.9km.

River Conon	70 kilometres (43 mi)	88 kilometres (55 mi)	The estuary is measured to Invergordon Harbour/ Newhall Point.

River Lochy	87 kilometres (54 mi)	87 kilometres (54 mi)	The Lochy-Spean to Loch Linnhe at mouth of the River Nevis.

River South Esk, Angus	85 kilometres (53 mi)	85 kilometres (53 mi)

River Annan	78 kilometres (48 mi)	78 kilometres (48 mi)

Sentence(s)

The River Tay is the longest river in Scotland.

final_sentence: The River Tay is the longest river in Scotland.