The elevation of the land as a whole proceeds gradually from south to north, the highest points being found in the north-west, as the Peak, in which neighbourhood several points exceed a height of 2000 ft., while Axe Edge, south of Buxton, and many other points throughout the district, range from 1500 ft.
After the Trent the most important river is the Derwent, one of its tributaries, which, taking its rise in the lofty ridges of the High Peak, flows southward through a beautiful valley, receiving a number of minor streams in its course, including the Wye, which, rising near Buxton, traverses the fine Millersdale and Monsal Dale.
Limestone is quarried at Buxton, Millersdale and Matlock for lime, fluxing and chemical purposes.
At Buxton, at an elevation of about 1000 ft., the mean temperature in January is 34.9° F., and in July 57.50, the mean annual being 45.4°.
Thus at Woodhead, lying high in the extreme north, it is 52.03 in., at Buxton 49.33 in., at Matlock, in the middle part of the Derwent valley, 35.2 in., and at Derby 24.35 in.