The county has an area of 2,625km2 (1,014sqmi) and a population of 1,053,316. The east of the county is more densely populated than the west, and contains the county's largest settlements: Derby (261,400), Chesterfield (88,483), and Swadlincote (45,000). For local government purposes Derbyshire comprises a non-metropolitan county, with eight districts, and the Derby unitary authority area. The East Midlands Combined County Authority includes Derbyshire County Council and Derby City Council.
The north of Derbyshire is hilly and contains the southern end of the Pennines, most of which are part of the Peak DistrictNational Park. They include Kinder Scout, at 636m (2,087ft) the highest point in the county. The River Derwent is the longest in the county, at 66mi (106km), and flows south until it meets the River Trent just south of Derby. Church Flatts Farm at Coton in the Elms, near Swadlincote, is the furthest point from the sea in the UK. (Full article...)
From Cromford it ran south following the 300-foot (91m) contour line along the east side of the valley of the Derwent to Ambergate, where it turned eastwards along the Amber valley. It turned sharply to cross the valley, crossing the river and the Ambergate to Nottingham road, by means of an aqueduct at Bullbridge, before turning towards Ripley. From there the Butterley Tunnel took it through to the Erewash Valley.
Image 19At the Rhodeswood reservoir dam, we see the outflow canal from the Torside Reservoir dam, alongside the Rhodeswood Reservoir. The Torside dam can be seen in the distance. To the right is Shining Clough Moss and Bleaklow. To the left Bareholm Moss and Black Hill (from Longdendale Chain)
Image 231 High Peak 2 Derbyshire Dales 3 South Derbyshire 4 Erewash 5 Amber Valley 6 North East Derbyshire 7 Chesterfield 8 Bolsover 9 Derby (from History of Derbyshire)