River Derwent, Rosthwaite, Borrowdale
More Articles in the Rosthwaite to Grasmere subsection
Sprinkling Tarn, source of River Derwent, on Seathwaite Fell
River Derwent, Rosthwaite, Coast to Coast
Borrowdale’s River Derwent has its origins high on Seathwaite Fell, where the outflow from Sprinkling Tarn gathers beneath the shadow of Great End (910 m). Though Sprinkling Tarn is regarded as the principal source, another major feeder is Ruddy Gill, born on the north-eastern slopes of Great End. As Ruddy Gill descends toward Seathwaite, it absorbs several tributaries — notably Allen Gill and Red Beck — which drain the western cliffs of Hind Side on Glaramara (783 m). Together, these waters form Grains Gill as they sweep beneath Aaron Crags.
The outflow from Sprinkling Tarn tumbles west through Great Slack — unnamed on the Ordnance Survey — before entering Styhead Tarn, a mountain pool at the head of Styhead Valley, beneath Great Gable and Green Gable. From there, Styhead Gill runs north to meet Grains Gill, and their confluence marks the true beginning of the River Derwent: one of the Lake District’s most storied rivers, flowing onward through Seathwaite and Rosthwaite into the heart of Borrowdale.
The newly formed River Derwent rushes north through the Seathwaite Valley, passing Seatoller, running beside Johnny Wood, and by-passing Rosthwaite. Beyond Rosthwaite it subsumes the Stonethwaite Beck, pours through the Jaws of Borrowdale, flows past Grange, and finally wends quietly into Derwent Water at its southern shore — leaving again at the north near Keswick.
Sprinkling Tarn on Seathwaite Fell
Sprinkling Tarn lies high on Seathwaite Fell at around 632 m, on a broad plateau that maintains a near-constant height across its upper slopes. The summit itself reaches 601 m, making this expansive shoulder of fell a natural cradle for the River Derwent’s headwaters.
Sprinkling Tarn from Green Gable
From the summit of Green Gable, Sprinkling Tarn appears as a faint glint of steel-blue far below on Seathwaite Fell. With a modest zoom its outline sharpens, revealing the tarn’s outflow towards Styhead Tarn in the valley beneath. The connecting path to Allen Crags is also clearly visible, tracing the fellside in a graceful arc across the high ground.
Styhead Tarn Seathwaite Fell
Styhead Tarn is a glacial corrie lake cradled at the head of the Styhead Valley, between Great Gable to the west, Seathwaite Fell to the east, and the rising saddle of Sty Head to the south. At 496 m, this mountain crossroads sends paths in every direction — towards Sprinkling Tarn, Great Gable, Wastdale Head, and Scafell Pike. The River Derwent’s journey truly begins here, with the outflowing waters of Styhead Gill.
Sty Head - Mountain Crossroads
Sty Head, forming the steep backwall of Styhead Tarn, is a key meeting point for Lakeland walkers arriving from Seathwaite, Wastwater, Great Gable, Sprinkling Tarn, and Scafell Pike. The towering mass of Lingmell, an 807 m Wainwright, dominates the skyline above this high pass. An emergency medical box is located here — a vital refuge for those caught in Borrowdale’s changeable weather.
Styhead Gill - Birth of the Derwent
Styhead Gill flows north from Styhead Tarn, threading between Green Gable and Seathwaite Fell before plunging over Taylorgill Force in a fine white torrent. Just beyond the fall, it joins with Grains Gill, and together they give birth to the River Derwent — one of Lakeland’s most storied waterways.
Taylorgill Force Seathwaite Fell
Taylorgill Force, a 140-foot cascade on Styhead Gill, ranks among the tallest waterfalls in the Lake District. It plunges through a steep, wooded gorge beneath the 646 m summit of Base Brown, where the ghyll narrows between mossy rock walls and dark conifers.
Ruddy Gill beneath Great End
Ruddy Gill rises on the eastern flanks of Great End, flowing north-north-west into a steep ravine near Sprinkling Tarn. As it gathers the waters of Allen Gill and Red Beck below Hind Side, it becomes Grains Gill — one of the principal headwaters of the River Derwent. The towering cliffs of Great End crown the scene above.
Stockley Bridge over Grains Gill
Grains Gill flows beneath Stockley Bridge, a graceful single-arch stone crossing that links the eastern path of the gill with the route to Styhead Tarn. The bridge marks the meeting of paths from Seathwaite and Base Brown, guiding walkers toward Taylorgill Force and the upper Styhead Valley.
Confluence below Seathwaite Fell
At the northern tip of Seathwaite Fell, Styhead Gill and Grains Gill unite to form the River Derwent. The 601 m Wainwright summit rises above, tiered by the crags of Black Waugh and Aaron Crags, with Greenhow Knott and its conifers marking the lower slopes beside Taylorgill Force. Beyond, the great pyramid of Great End looms spectrally above the valley divide.
The Crook - River Derwent
Just south of High Hows Wood, the River Derwent absorbs the Stonethwaite Beck at a tight, ninety-degree meander long known as The Crook. Here the waters from Greenup Gill and Langstrath Beck join the Derwent, marking a quiet yet momentous union at the heart of Borrowdale.
Stang Dub - River Derwent
Stang Dub is a quiet reach of the River Derwent near New Bridge, just north-west of Rosthwaite. A dub is a deep, still pool beside the riverbank — sometimes called a bog hole. In earlier centuries, such pools were often artificially deepened, with a removable stone or mud barrier placed at the entrance to trap fish.
River Derwent New Bridge
New Bridge spans the River Derwent just north of Rosthwaite. Though called “New,” it is in fact an ancient single-arch packhorse bridge, once used by traders and shepherds crossing between Borrowdale’s farms. Severe flooding in the winter of 2015 caused significant damage to the structure, prompting extensive restoration work in the years that followed.
Gowder Dub - River Derwent
Gowder Dub lies at the northern end of the Jaws of Borrowdale — a broad, looping section of the River Derwent where the current slackens and the water deepens. Favoured by wild swimmers, this tranquil reach sits opposite the Bowder Stone, at the north tip of Low Hows Wood, where the river meanders gently toward Grange.
Derwent Water
from Castle Crag
Derwent Water, one of Lakeland’s largest and most scenic lakes, stretches for roughly three miles south of Keswick — the bustling market town that borders its northern shore. The lake is ringed by graceful fells, including Cat Bells, Maiden Moor, High Seat, Bleaberry Fell, and the towering 931 m Skiddaw. Fed by the River Derwent at its southern inlet, Derwent Water releases the same river from its northern shore, sending it northwards to Bassenthwaite Lake, through Cockermouth, and ultimately to the Irish Sea at Workington.
Hiking the Coast to Coast trail guide
Hiking the Coast to Coast is a digitally enhanced eBook designed to accompany you on your journey along the Coast to Coast path. Available on Apple Books for iPhone, iPad and Mac, the guide includes:
• Mapping with interactive features
• Step-by-step route directions
• Hundreds of colour photographs
• Route conditions in different weather
• Historical and cultural points of interest
Whether you’re planning your trip or already on the trail, it’s a practical and beautifully illustrated resource to carry with you.

