Bala Lake is a wide lake near the town of Bala, in Gwynedd, Wales. It is 6.4 km (4 miles) long, about 1.6 km (1 mile) wide and with a surface of 4.84 square km ( 1.87 square miles). Its maximum depth reaches 42 metres (138 feet). It is run by the River Dee, the water of the lake being famously deep and clear. The Bala Lake Railway runs for a couple of kilometres along the lake's southern side. It is the home for abundant pike, roach, perch, brown trout, eel. A very rare mollusk can be found here - the glutinous snail. Near the lake two sailing clubs can be found.