Howden Reservoir

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.

Derwent Reservoir is the middle of three reservoirs in the Upper Derwent Valley in the north of Derbyshire, England. It lies approximately 10 mi (16 km) from Glossop and 10 mi (16 km) from Sheffield. The River Derwent flows first through Howden Reservoir, then Derwent Reservoir and finally through Ladybower Reservoir. Between them they provide practically all of Derbyshire's water, as well as to a large part of South Yorkshire and as far afield as Nottingham and Leicester.Derwent Reservoir is around 1.5 mi (2.4 km) in length, running broadly north–south, with Howden Dam at the northern end and Derwent Dam at the south. A small island lies near the Howden Dam. The Abbey Brook flows into the reservoir from the east.At its full capacity the reservoir covers an area of 70.8 ha (175 acres) and at its deepest point is 34.7 m (114 ft) deep.

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.

Margery Hill is a 546-metre (1,791 ft) hill on the Howden Moors in South Yorkshire, England. It lies towards the northern boundary of the Peak District National Park, between Langsett Reservoir to the northeast and Howden Reservoir to the southwest. The area is managed by the National Trust as part of their High Peak Estate. Peat near the summit cairn has been dated to a uniform age of about 3,500 years old, indicating that it was constructed rather than natural; it is believed to have been part of a Bronze Age burial mound. The area has been designated a Scheduled Ancient Monument by English Heritage.Margery Hill is the highest marked point within the boundaries of the City of Sheffield. The land rises slightly to 550 metres (1,800 ft) about 0.9 miles (1.5 km) to the south, near High Stones.

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

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.

Hope Woodlands is an extensive civil parish in the High Peak district of Derbyshire in England. The parish covers the Woodlands Valley, the western Upper Derwent Valley, the northern half of Kinder Scout and much of Bleaklow. The only habitations in the parish are remote farms, forming small clusters at Upper Ashop and Alport. According to the 2001 UK census, the parish had a population of 68 people. Socialist and suffragette Hannah Mitchell was born here in 1872.

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.

The Dark Peak is the higher and wilder part of the Peak District in England, mostly forming the northern section but also extending south into its eastern and western margins. It is mainly in Derbyshire but parts are in Staffordshire, Cheshire, Greater Manchester, West Yorkshire and South Yorkshire. It gets its name because (in contrast to the White Peak), the underlying limestone is covered by a cap of Millstone Grit sandstones with softer shale underneath, meaning that in winter the soil is almost always saturated with water. The land is thus largely uninhabited moorland plateaux where almost any depression is filled with sphagnum bogs and black peat. The High Peak is an alternative name for the Dark Peak, but High Peak is also the name of an administrative district of Derbyshire which includes part of the White Peak. The areas of Millstone Grit form an 'inverted horseshoe' around the lower uncapped limestone areas of the White Peak, enclosing it to the west, north and east. Hence the Dark Peak is said to cover the higher, northern moors between the Hope Valley to the south and the Tame Valley, Standedge and Holme Valley to the north, separating it from the South Pennines, the Western Moors stretching south to near the Churnet Valley, and the Eastern Moors southwards towards Matlock. The Dark Peak is one of 159 National Character Areas defined by Natural England; as defined by Natural England, the Dark Peak NCA covers 86,604 hectares (334 sq mi) and includes the northern block of hills approximately bounded by Marsden, Stocksbridge, Hathersage and Chapel-en-le-Frith, plus the eastern moors between Hathersage and Matlock, but excludes the western moors between Chapel and the Churnet Valley (which it places in NCA 53, the South West Peak), and the area around Glossop (in NCA 54, Manchester Pennine Fringe).An area of 31,852 hectares (123 sq mi) is designated as the Dark Peak Site of Special Scientific Interest (SSSI), which excludes the separately designated Eastern Moors. The SSSI extends over the borders into Greater Manchester and West Yorkshire. A large part of the SSSI is included in the South Pennine Moors Special Area of Conservation.Principal upland areas within the Dark Peak include Kinder Scout, Bleaklow (both of which rise to over 600 m (2,000 ft)), Black Hill, the Roaches, Shining Tor, Mam Tor, Win Hill and Stanage Edge.