Prospect Creek, an urban watercourse of the Georges River catchment, is located in the western and Canterbury-Bankstown regions of Sydney, in New South Wales, Australia. As Prospect Reservoir forms a part of the Sydney metropolitan water supply, the flow of the creek is regulated in accordance with the operational requirements of Sydney Water. The creek is 26 kilometres (16 mi) long, starting at the Prospect Reservoir at the top of the catchment and flows to the Georges River at Georges Hall, as its tributary.