Swale is less familiar to British readers than its American usage might suggest, since the word has retained more currency in North American English than in British. Students studying British poetry should understand swale primarily as a minor topographical feature — the moist, low-lying hollow in otherwise dry ground — whose
significance lies in its difference from the surrounding landscape. In American landscape poetry and nature writing (Thoreau,
Whitman, later twentieth-century poets), swale is a more prominent term describing the natural drainage channels of the eastern and midwestern landscapes. Students reading British poems should be alert to the specific qualities associated with swale: the cool microclimate of the hollow, the different plant communities supported by wetter conditions, the tendency to hold
frost later in spring and to provide refuge from
summer heat.
These qualities give the swale a specific ecological and poetic character distinct from the more visible features of the landscape — the valley, the hill, the river. Students interested in microhabitats and the biodiversity of traditional farming landscapes will find swale a useful term for the small-scale landscape features that support distinctive plant and animal communities. Related terms: dene, holm, meadow, sedge, bulrush.