Agriculture in Scotland in the geography of Scotland is the distinction between the Highlands and Islands in the north and west and the Lowlands in the south and east. The Highlands are further divided into the Northwest Highlands and the Grampian Mountains by the fault line of the Great Glen. The Lowlands are divided into the fertile belt of the Central Lowlands and the higher terrain of the Southern Uplands, which included the Cheviot hills, over which the border with England runs. The Central Lowland belt averages about 50 miles in width, and contains most of the good quality agricultural land. Scotland is
Drainage divide Drainage divide A drainage divide, water divide, divide, ridgeline, watershed, or water parting is the line that separates neighbouring drainage basins. On rugged land, the divide lies along topographical ridges, and may be in the form of a single range of hills or mountains, known as a dividing range. On flat terrain, especially where the ground is marshy, the divide may be harder to discern. A valley floor divide is a low drainage divide that runs across a valley, sometimes created by deposition or stream capture. Since ridgelines are relatively easy to see and agree about, drainage divides are often