district. The main watercourse entering the reserve, Hunts Creek, is a tributary of the Parramatta River. The reserve's boundaries to the west are cut off by suburban development along North Rocks Road, to the north by Hunts Creek, to the east by the private bushland and playing fields of The King's School, and to the south by James Ruse Drive. Geologically, Lake Parramatta is located on the margins of Wianamatta shale and Hawkesbury sandstone formations, with a resulting variation in vegetation communities. Vegetation communities present at the site include sandstone blue-gum forests, iron bark, Cumberland Plain Woodland vegetation communities and some coastal species such as Banksia serrata. Recreational use When the water supply became insufficient for the growing demands, in 1909 Lake Parramatta was entrusted with its surrounds to the City of Parramatta as a recreational area. Between 1920 and 1940, the lake was a popular swimming hole with at one point the largest inland freshwater lifesaving club in Australia. By the late 1980s, the lack of consistently good water quality led to "No Swimming" signs being erected. In 2006, the City of Parramatta reopened Lake Parramatta to limited swimming. After investigating different options the Council decided to allow swimming only on special event days. The first of these, called the Freshwater Festival, was held on 3 December 2006 featuring competitive swimming races from 10am till 12pm and public swimming from 1pm till 3pm, supervised by the Royal Life Saving Society Australia. On Saturday 24 January 2015, Lake Parramatta officially became a designated swimming spot, with an area marked out with buoys for swimming and lifeguards present between 9am and 5pm on weekends and public holidays in the warm season. The reserve surrounding the swimming area includes recreational walking tracks within the scenic bushland, barbecue areas, children's playgrounds and a restaurant. Furthermore, visitors can also hire boats to explore the natural habitat. Access Road access to Lake Parramatta is by a convoluted journey down a number of innocuous suburban streets that means the lake is a feature unknown and elusive to a great many Sydneysiders – tucked away as it is. Visitors would take Bourke Street off Church Street, Parramatta. Then onto Lacey Street then Illawong Drive, passing under James Ruse Drive. Illawong Drive passes into the reserve and follows the eastern edge of the lake. When travelling by bus from the Parramatta Bus Interchange, the Hillsbus route 609 is