Thirlmere, a lake in Legherthwaite, Cumberland, 5 miles SSE of Keswick. It extends 3 miles from S to N, is rarely more than a quarter of a mile wide, has a maximum depth of 108 feet and a surface elevation above sea-level of 533 feet, contracts near the middle to a strait crossed by a bridge, has an intricated cincture of rocky promontories and picturesque precipices, and is overhung on the E by Helvellyn, Whiteside Fell, and Watson Dodd, and on the W by Armboth Fells and Raven Crag. The water supply of Manchester is derived from this lake. The works were successfully completed and opened in 1894. See MANCHESTER.
Land and Property
The Return of Owners of Land in 1873 for Cumberland is available to browse.
Online maps of Thirlmere are available from a number of sites: