River Noe in the context of Kinder Scout

Castleton is a village and civil parish in the High Peak district of Derbyshire, England, at the western end of the Hope Valley on the Peakshole Water, a tributary of the River Noe, between the Dark Peak to the north and the White Peak to the south. The population was 544 at the 2021 Census.

Peakshole Water is a stream in the Derbyshire Peak District of England, named after its source, Peak Cavern. It flows through the village of Castleton to join the River Noe in nearby Hope. Despite its name, much of its flow actually emerges from the Russet Well, a resurgence in a garden on the east side of the gorge below the main Peak Cavern entrance, described as the "main resurgence of the Castleton area", which drains a series of swallets on the other side of the Pennine watershed below Rushup Edge. The resurgence has been explored by cave divers to a depth of 82 feet (25 m) but further exploration was halted by a constriction.

The River Noe flows into the Derbyshire Derwent, which in turn leads to the River Trent and thence to the Humber estuary and the North Sea.