River Glenderamackin

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River Glenderamackin - geograph.org.uk - 777034.jpg
River Glenderamackin from Guardhouse bridge
Country United Kingdom
Part England
 - location Mungrisdale Common
Mouth River Greta
 - location Threlkeld
 - coordinates 54°36′45″N 3°3′45″W / 54.61250°N 3.06250°W / 54.61250; -3.06250Coordinates: 54°36′45″N 3°3′45″W / 54.61250°N 3.06250°W / 54.61250; -3.06250
Location of the mouth within Cumbria

The River Glenderamackin, the Glendermackin or Glendermackin Beck is a watercourse in Cumbria, England. It is a headstream of the Greta.

The river rises on Mungrisdale Common on Saddleback, and drains much of the eastern and southern sides of Blencathra.

The river runs east, then north before sharply turning south at the village of Mungrisdale, skirting almost all around the bottom of Souther Fell.

Latterly, the river turns west at Lowside and is soon swelled by the waters of Mosedale Beck. The Glenderamackin continues past Threlkeld, at which point it conjoins with St. John's Beck to form the River Greta.


The name Glenermakan is recorded from 1278.[1] The spelling Glendermakin is described in 1777.[2] Glendermackin-beck is cited in 1778.[3]


The name "Glenderamackin" is of Brythonic derivation and is cognate with the Welsh glyndwfr y mochyn, meaning 'the river valley (glyndwfr) of the pig (mochyn)'.

This etymology is supported by the etymology of Mungrisdale, through which the river flows, featuring the same meaning from Norse.[4]

The 'glendera' element is also present in the name of Glenderaterra Beck, which joins the River Greta shortly after its source.


  1. ^ Transactions of the Cumberland and Westmorland Antiquarian and Archaeological Society. Kendal. 1866-1900 (first series) xxiii, pages 186 f.
  2. ^ J. Nicholson and R. Burn, The History and Antiquities of the Counties of Westmorland and Cumberland London, 1777. Vol ii, page 93.
  3. ^ Thomas West, A Guide to the Lakes, London, 1778. p. 112.
  4. ^ Names of Rivers in Cumbria Archived 2006-07-18 at the Wayback Machine.. Retrieved 11 September 2006.