Derwent Reservoir
Derwent Reservoir is a large upland reservoir in the Upper Derwent Valley, nestled within the Peak District National Park in Derbyshire. It sits in a dramatic valley flanked by moorland and conifer plantations, and forms the middle of three reservoirs in the valley, with Howden Reservoir immediately to the north and Ladybower Reservoir to the south. The reservoir was constructed to supply drinking water to the cities of Derby, Leicester, Nottingham, and Sheffield, and it remains an operational water supply reservoir managed by Severn Trent Water. Beyond its functional purpose, it has become one of the most visited and celebrated landscapes in the Peak District, drawing walkers, cyclists, wildlife enthusiasts, and history lovers in large numbers throughout the year.
The history of Derwent Reservoir is bound up with the ambitious water engineering projects of the late Victorian and Edwardian eras. Construction began in 1902 and the reservoir was completed and filled by 1916, a project that required the flooding of the Derwent Valley hamlet of Ashopton and surrounding farmsteads — though the more complete flooding of Ashopton came later with Ladybower. The construction of the reservoir also saw the demolition of Derwent village and its ancient church, which disappeared beneath the rising waters. During periods of extreme drought, the ruins of the submerged village have occasionally re-emerged, drawing visitors eager to glimpse the ghostly remnants of the lost settlement. The associated Derwent Dam was built in the same Gothic style as the Howden Dam, featuring distinctive stone towers at either end that give it a fairy-tale quality reminiscent of a medieval fortress.
Derwent Reservoir holds a special place in military history and national memory. During the Second World War, the reservoir and its twin Howden Reservoir were used as a training ground by the Royal Air Force's 617 Squadron — the famous Dambusters. The squadron, under the command of Wing Commander Guy Gibson, practised their low-level flying and precision bombing runs over the dams here in preparation for Operation Chastise, the 1943 raid on the Ruhr dams in Germany using Barnes Wallis's bouncing bomb. The valley's shape and the geometry of the dams closely resembled the Möhne Dam, making it an ideal training site. The reservoir has commemorated this connection prominently, and a memorial to the Dambusters stands near the western dam tower. On the 50th anniversary of the raids in 1993, Lancaster bombers flew low over the dam in commemoration, a moment that drew enormous crowds.
In physical terms, Derwent Reservoir is an elongated body of water stretching roughly two miles from north to south through a steep-sided valley. The surrounding landscape is a mixture of dark heather moorland on the higher ridges, dense stands of spruce and larch in the valley sides planted by the Forestry Commission in the twentieth century, and patches of open pasture and boulder-strewn hillside near the water's edge. The water itself appears dark and peaty, reflecting the deep greens and purples of the moorland above. On calm days the dam towers are perfectly mirrored in the glassy surface. The sounds of the valley are a medley of wind through conifers, rushing water where the dam releases its flow, birdsong from species such as goshawk, crossbill, and dipper, and the occasional call of red grouse from the heather moors above.
The area around Derwent Reservoir is part of the Dark Peak landscape, characterised by gritstone edges, blanket bogs, and ancient packhorse routes. The Derwent Edge to the east provides one of the most dramatic ridge walks in the northern Peak District, offering sweeping views over the reservoir and the surrounding valley. Nearby landmarks include the imposing rocky outcrops along the edge such as the Salt Cellar, Back Tor, and Wheel Stones. The village of Bamford lies a few miles to the south, and the market town of Hathersage is within easy reach. The area forms part of a wider network of walking and cycling routes including the popular Upper Derwent Valley trail, which runs along the eastern shore of the reservoir.
For practical visitors, the reservoir is accessible via the A57 Snake Pass road and then a minor road through the Derwent Valley from the direction of Bamford or Ladybower. A large pay-and-display car park is located at Fairholmes, at the southern end of the Derwent and Howden reservoir complex, and this serves as the main visitor hub, with a seasonal café, cycle hire, and toilet facilities. The road along the western shore of Derwent Reservoir is closed to private vehicles for much of the year, making it particularly pleasant for walkers and cyclists who enjoy a traffic-free route alongside the water. The site is busiest on summer weekends and bank holidays, so early morning visits are recommended for those seeking quiet. Winter visits offer dramatic light, potential snow on the moors, and an atmosphere of deep solitude that is hard to match anywhere in the English uplands.
One of the more poignant and unusual stories associated with Derwent Reservoir concerns the old Derwent village church whose spire remained visible above the waterline long after the valley was flooded. It became something of a local landmark, visible above the surface on calm days, before eventually being demolished by the water authority in 1947 partly due to concerns about navigation safety. The submerged packhorse bridge known as the Derwent Bridge, which was moved and re-erected at Slippery Stones at the northern end of Howden Reservoir before flooding, can still be visited today and serves as a tangible link to the pre-reservoir valley. The combination of drowned villages, wartime heroism, Victorian engineering, and spectacular wild landscape makes Derwent Reservoir one of the most layered and emotionally resonant places in the entire Peak District.