Upper Derwent Valley - Derbyshire Claimed

Upper Derwent Valley is an area of the Peak District National Park near Buxton, but its north eastern area lies in Sheffield, South Yorkshire.

Its most significant features are the Derwent Dams, Ladybower, Derwent and Howden, which form Ladybower Reservoir, Derwent Reservoir and Howden Reservoir respectively. The reservoirs cover 198.50 square kilometres, and can hold 463,692 million litres. The main beneficiary of the reservoirs' water is Sheffield, less than 15 kilometres (9.3 mi) away, but the reservoirs are also connected to the Severn Trent's water grid that extends to mid-Wales and Gloucestershire.

The area is good for rare birds, including black grouse and goshawk. Much of the surrounding land is administered by the National Trust and is popular as a recreational area for walking and cycling.