Ladybower

Derwent Reservoir is the middle of three reservoirs in the Upper Derwent Valley in the northeast of Derbyshire, England. It lies approximately 10 miles (16 km) from Glossop and 10 miles (16 km) from Sheffield. The River Derwent flows first through Howden Reservoir, then Derwent Reservoir and finally through Ladybower Reservoir.

The Howden Reservoir is a Y-shaped reservoir, top one of the three in the Upper Derwent Valley, England. The western half of the reservoir lies in Derbyshire, whereas 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 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 the Ravens Clough, the Black Clough, the Fagney Clough, the Green Clough and the Grinah Grain.