Lakes Snowdon

llyn llydaw, largest , deepest lake on snowdon s flanks, crossed causeway @ eastern end.

a number of lakes found in various cwms of snowdon range.

llyn llydaw – 1,430 feet (440 m) high, 110 acres (45 ha) – lies in cwm dyli, snowdon s eastern cwm, , 1 of snowdonia s deepest lakes, @ 190 ft (58 m) deep. various explanations of name have been put forward, including lludw ( ash ), ashen deposits along shore, llydaw ( brittany ). contains evidence of crannog settlement, , location of 10-by-2-foot (3 m × 0.6 m) dugout canoe described in cambrian journal in 1862. lake coloured washings copper mines nearby, , used cwm dyli hydroelectric power station, opened in 1906. lake crossed causeway, built in 1853 , raised in 20th century prevent causeway flooding frequently.
glaslyn – 1,970 feet (600 m) high, 18 acres (7.3 ha) – lies higher cwm dyli llyn llydaw. called llyn y ffynnon glas, , has depth of 127 feet (39 m). long time, believed bottomless, , location various myths.
llyn ffynnon-y-gwas – 1,430 feet (440 m) high, 10 acres (4.0 ha) – lies in cwm treweunydd, snowdon s north-western cwm, , passed snowdon ranger path. enlarged damming use reservoir use slate quarries, level has since been lowered, , lake s volume reduced 24,000 cubic metres (850,000 cu ft).

other lakes include llyn du r arddu below clogwyn du r arddu – 1,901 feet (579 m) high, 5 acres (2.0 ha), llyn teyrn near pen-y-pass – 1,237 feet (377 m) high, 5 acres (2.0 ha), , several smaller pools.