The River Lyne is a river

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

 of Cumbria

Cumbria

Cumbria , is a non-metropolitan county in North West England. The county and Cumbria County Council, its local authority, came into existence in 1974 after the passage of the Local Government Act 1972. Cumbria's largest settlement and county town is Carlisle. It consists of six districts, and in...

 in England

England

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

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The river is formed near the hamlet of Stapleton by the confluence of the Black Lyne (moving from the north) and the White Lyne (from northeast).

Both branches have sources in the remote north east of Cumbria in Kershope Forest close to the borders with Scotland

Scotland

Scotland is a country that is part of the United Kingdom. Occupying the northern third of the island of Great Britain, it shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the...

 and Northumberland

Northumberland

Northumberland is the northernmost ceremonial county and a unitary district in North East England. For Eurostat purposes Northumberland is a NUTS 3 region and is one of three boroughs or unitary districts that comprise the "Northumberland and Tyne and Wear" NUTS 2 region...

, with the Black Lyne having its source at Blacklyne Common and the White Lyne at Whitelyne Common.

After the meeting of the waters, the river continues in a west-by-south-westerly direction to Lynefoot, where it flows into the Border Esk

River Esk, Dumfries and Galloway

The River Esk is a river in Dumfries and Galloway, Scotland, that flows into the Solway Firth. It also flows for a small way through the English county of Cumbria before entering the Solway....

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The river should not be confused with Lyne Water

Lyne Water

The Lyne Water is a tributary of the River Tweed which rises in the Pentland Hills of southern Scotland at Baddinsgill Reservoir. It runs through West Linton and Romannobridge, passes Flemington and Lyne Station and enters the Tweed west of Peebles. It floods regularly in winter and occasionally in...

, often referred to as the River Lyne, a tributary of the River Tweed

River Tweed

The River Tweed, or Tweed Water, is long and flows primarily through the Borders region of Great Britain. It rises on Tweedsmuir at Tweed's Well near where the Clyde, draining northwest, and the Annan draining south also rise. "Annan, Tweed and Clyde rise oot the ae hillside" as the Border saying...

 in the Scottish Borders

Scottish Borders

The Scottish Borders is one of 32 local government council areas of Scotland. It is bordered by Dumfries and Galloway in the west, South Lanarkshire and West Lothian in the north west, City of Edinburgh, East Lothian, Midlothian to the north; and the non-metropolitan counties of Northumberland...

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