Caldew near to Welton
|- right||Roe Beck|
|- location||high up on Skiddaw, between its summit and Sale How|
|- location||confluence with River Eden|
|Discharge||for Holm Hill|
|- average||4.5 m3/s (159 cu ft/s)|
At Hutton Roof, the river emerges from the dale and turns sharply northwards, a course taking it through the settlements of Hesket Newmarket, Sebergham, Buckabank and Dalston. At Buckabank the river flows over a weir that provides a mill stream to the cotton mill and there is a salmon ladder. Flowing under Hawksdale Bridge at Bridge End and Dalston's two other bridges (Jubilee Bridge and the White Bridge) the river then flows towards Cummersdale where another weir used to exist above the now modernised textile mill.
In 2016 the floodwaters of the swollen river Caldew washed away the eighteenth-century Bell Bridge at Sebergham.
The river enters the suburbs of Carlisle north of Cummersdale flowing over a weir in Denton Holme at the site of a large Victorian mill. The river flows through the city from Denton Holme beneath west walls and then the Caldew skirts around the castle before emptying into the River Eden opposite Stanwix.
" Probably 'the cold river', from OE 'cald' and OE 'éa' 'river', influenced by OFr 'ewe' 'water'....However, the possibility that this is a Brit.[ish] name meaning 'swift river' from the same root as 'Calder' cannot be ruled out altogether." (OE=Old English, OFr=Old French, Brit.=British language).
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