Derwent Reservoir (Derbyshire)

The River Westend flows through the Dark Peak of the Derbyshire Peak District in England. Its source is at Bleaklow Stones on Bleaklow, from where it flows south east into a western arm of the Howden Reservoir. Its lower reaches run through a forestry plantation. Tributaries of the river include Ravens Clough, Black Clough, Fagney Clough, Green Clough and Grinah Grain.

The Howden Reservoir is a Y-shaped reservoir, the uppermost of the three in the Upper Derwent Valley, England. The western half of the reservoir lies in Derbyshire and the eastern half is in Sheffield, South Yorkshire; the county border runs through the middle of the reservoir, following the original path of the River Derwent. The longest arm is around 1+1⁄4 mi (2.0 km) in length. The reservoir is bounded at the southern end by Howden Dam; below this, the Derwent flows immediately into Derwent Reservoir and subsequently the Ladybower Reservoir. Other tributaries include the River Westend, Howden Clough and Linch Clough. Work commenced on the dam's construction on 16 July 1901 and completed in July 1912. The chief engineer was Edward Sandeman. He was also in charge of building nearby Derwent dam and was awarded the Telford Medal in 1918 for his work "Derwent Valley Waterworks". The works involved constructing a temporary village at Birchinlee, or "Tin Town", for the workers, a temporary railway line from the main line at Bamford, construction of a link aqueduct to the Derwent Dam. The dam is of solid masonry construction, and 117 ft (36 m) tall, 1,080 ft (330 m) long, and impounds 1,900,000 imp gal (8,600 kl) of water, from a catchment area of 5,155 acres (2,086 ha). The workers who died during the construction of the dam were buried in St John the Baptist's Church, Bamford. To the east of the reservoir stands Featherbed Moss, one of the highest tops in the area at 1,788 ft (545 m), and one of several tops of that name in the area. This is not to be confused with the more well-known Featherbed Moss on the Pennine Way between Kinder Scout and Bleaklow.

Derwent Woodlands War Memorial is a 20th-century grade II listed war memorial near the Ladybower Reservoir, Derbyshire.

Lost Lad is a hill, 518 metres (1,699 ft) high on the Derwent Edge in the Peak District in the county of Derbyshire in England. It is a subpeak of Back Tor (538 metres [1,765 ft]).

Derwent Edge is a Millstone Grit escarpment that lies above the Upper Derwent Valley in the Peak District National Park in the English county of Derbyshire. An Ordnance Survey column marks the highest point of the Edge at Back Tor (538 metres, 1765 feet). North of Back Tor the edge extends into Howden Edge and enters the county of South Yorkshire.

Crook Hill is a small hill in the Peak District National Park in the English county of Derbyshire, 5 kilometres (3.1 mi) northeast of Castleton.

Ladybower Reservoir is a large Y-shaped, artificial reservoir, the lowest of three in the Upper Derwent Valley in Derbyshire, England. The River Ashop flows into the reservoir from the west; the River Derwent flows south, initially through Howden Reservoir, then Derwent Reservoir, and finally through Ladybower Reservoir. The reservoir is owned by Severn Trent.The area is now a tourist attraction, with the Fairholmes visitors' centre located at the northern tip of Ladybower. The east arm of the reservoir, fed by the Ladybower Brook, is overlooked by Hordron Edge stone circle.

Derwent was a village 'drowned' in 1944 when the Ladybower Reservoir in Derbyshire, England was created. The village of Ashopton, Derwent Woodlands church, and Derwent Hall were also 'drowned' in the construction of the reservoir.

Howden Edge (grid reference SK187943) is a peak in the north-east of the Upper Derwent Valley area of the Peak District National Park in England. At 545 m (1,788 ft), it is the second-highest marked point within South Yorkshire, after Margery Hill 546 m (1,791 ft). The highest point itself being High Stones at 548 m (1,798 ft) which is only shown on 1:25,000 scale maps and larger. It is north-east of Howden Reservoir and north of Abbey Brook.

High Stones, at 548 metres (1,798 ft), is the highest point within the boundaries of both the City of Sheffield and South Yorkshire, England.High Stones lies on the Howden Moors towards in the northern Peak District National Park, between Langsett Reservoir to the north-east and Howden Reservoir to the south-west. The area is managed by the National Trust, as part of the Nether Hey area of their High Peak Estate.

The Alport Castles are a landslip feature in the Peak District National Park in Derbyshire. At over half a mile long, it is thought to be the largest landslide in the United Kingdom. The name "castles" comes from the debris from the landslide, which has produced several gritstone mounds that tower over the valley and appear from the distance to look like castles. Viewed from a distance the largest of these, the "Tower", resembles a full-scale motte and bailey castle. The Alport Castles are on the eastern side of the River Alport valley, part of the National Trust's High Peak Estate; they lie north of the Snake Pass and north-west of Ladybower Reservoir.

The River Alport flows for 5.6 miles (9 km) in the Dark Peak of the Peak District in Derbyshire, England. Its source is on Bleaklow, 3 miles (4.8 km) east of Glossop, from which it flows south through the Grains in the Water bog, then over gritstone below the Alport Castles landslide to Alport Bridge on the A57 Snake Pass route from Sheffield to Manchester, where it joins the River Ashop. The Ashop flows into Ladybower Reservoir about 2.5 miles (4.0 km) down the valley, which discharges via the Rivers Derwent and Trent to the North Sea. The source of the Alport is close to the Pennine watershed. The course of the river includes three small waterfalls. At its southern end lie the remains of a tunnel constructed to carry water to a planned but unbuilt cotton mill. A weir was built on the river in about 1922 and a short watercourse added to feed the water into the Ashop weir located upstream of the confluence. The water was then culverted along the valley to the Ashop Siphon near Hagg Farm, where it then crossed over the River Ashop in a 6-foot-diameter (1.8 m) steel pipe 273 yards (250 m) long, passed through a 1,065-yard (974 m) tunnel under the hill and then via another open watercourse of 761 yards (696 m) to discharge into the Derwent Reservoir a few yards north of the dam wall. The outlet is visible from the viewing area.The valley of the Alport contains some farmland, but the banks of the valley are mostly coniferous plantations and heath. The coniferous plantations are being converted to semi-natural deciduous woodland. The small hamlet of Alport lies on the west bank near the southern end of the river.