Rises in Black Fell Moss, Mallerstang, on the high ground between High Seat, Yorkshire Dales and Hugh Seat. Here it forms the boundary between the counties of Cumbria and North Yorkshire. Two other great rivers arise in the same peat bogs here, within a kilometre of each other: the River Swale and River Ure.
The steep-sided dale of Mallerstang later opens out to become the Vale of Eden. The river flows through Kirkby Stephen and Appleby-in-Westmorland, and receives the water of many becks flowing off the Pennines to the east, and longer rivers from the Lakes off to the west, including the River Lyvennet, River Leith and River Eamont, which arrives via Ullswater and Penrith.
Continuing north, it passes close to the ancient stone circle known as Long Meg and Her Daughters and through the vale of Cumbria on the Solway Plain.
River Eden at Armthwaite.
Is a river in the Lake District of the county of Cumbria The name Derwent is derived from a Celtic word for "oak trees".
The river rises at Styhead Tarn underneath Scafell Pike and flows in a northerly direction through the valley of Borrowdale, before continuing through Derwentwater, giving the lake its name.
The Derwent then continues into Bassenthwaite Lake, picking up the waters of the River Greta just outside Keswick.
Beyond Bassenthwaite Lake the river flows westwards through the Isel Valley, before leaving the Lake District National Park just before reaching Cockermouth.
Another tributary is the River Cocker, which joins the Derwent at Cockermouth, through which the Derwent flows after exiting the Lake District on its now westerly course. After leaving Cockermouth, the river flows by Papcastle where a Roman fort bears the name of the river.
The river flows into the Irish Sea at Workington
River Stephen at Kirby stephen
There are numerous other rivers and becks in Cumbria of which we will describe in time, such as Ure, Swale, Egremont.