Lake Lyell is situated on the outskirts of Lithgow approximately 2 and a half hours from Sydney. It was originally built in 1982 by Delta Electricity for the Mount Piper and Wallerawang Power Stations. The dams capacity is 34500ML with an approximate surface area of 238ha and a maximum water depth of 38m. 

Lake Lyell is a popular area utilised for fishing, water skiiing, 4WDing, swimming, canoeing…..the list goes on! The Lake has plenty of fish for the angler in the family, Rainbow Trout, Brown Trout, Australian Bass, Macquarie Perch, Goldfish and Redfin.  

The park also has a number of picnic tables, catering for overnight visitors and day visitors. 
Lake Lyell provides cooling water for both Wallerawang and Mount Piper Power Stations. The Lake is connected to Wallerawang Lake by pipeline and hence to Wallerawang and Mount Piper Stations. Water is pumped from Lake Lyell Dam on the Cox’s River, about 20 kilometres from the power station to the Thompson’s Creek Dam, close to Mount Piper, which provides an additional 27,000 mega litres of cooling water.