Panoramic view of Windermere taken from Bowness-on-Windermere.
Windermere is the largest natural lake in England. It is a ribbon lake formed in a glacial trough after the retreat of ice at the start of the current interglacial.
Windermere is 10½ miles (17 km) long and varies from a quarter of a mile to one mile wide (400 m to 1500 m). It reaches a depth of about 220 feet (65 m) near its northern end and has an elevation above sea level of 130 feet (40 m). The lake is drained from its southernmost point by the River Leven. It is replenished by the rivers Brathay, Rothay, Trout Beck, Cunsey Beck and several other lesser streams.