journey to the ocean at Bondi. Externally, it has a rectangular conduit with an internal U shape approx. wide by approx. deep, and is carried by eight main brick arches, each of centre to centre, and a number of minor arches. The total length of the span is 15 chains. The boundary of the structure forms a triangle giving a maximum of clearance form the external edges of the structure. This channel drains an area of lying to the south of Rozelle Bay and is located approximately between Balmain Road, Leichhardt and Johnston Street, Annandale. The catchment area of the channel is comprised within the Municipalities of Leichhardt and Marrickville. From the outlet in Rozelle Bay the drain proceeds in a meandering course in a southerly direction crossing Brennan, Piper, Booth, Styles and Albion Streets before terminating at Parramatta Road. The channel is in length and is predominantly brick (56%) and concrete (42%) in fabric. The channel cross section is composed of the following; circular (38%), covered (30%) and open channel (27%). The main channel has the following Branches stemming from it; Piper Street, Moore Street Styles Street and Parramatta Road. The size of the channel outlet is . Part of the stormwater drain runs through Whites Creek Valley Park, a picturesque recreational area. Various bridges are built over the channel and they add to the historic and aesthetic values of the drain. In addition the highly significant Whites Creek Aqueduct (Bondi sewer) passes overhead. Heritage listing The Whites Creek sewage aqueduct was completed in 1897 and is a major and highly visible component of the Northern Main Sewer extension of the Bondi Ocean Outfall Sewer. The arches and carrier of the aqueduct are one of the first major constructions undertaken using reinforced concrete in NSW and one of the first in Australia. The slender proportions of the supporting arches and sewage carrier along with its historical technology value are a major landmark for Sydney. The aqueduct is a major element of the historic built environment of the local area, and a long held part of the recreational reserve. Elements of significance are the past and ongoing use, technology of construction and setting (inclusive of views) within the park reserve. White's Creek Aqueduct was listed on the New South Wales State Heritage Register on 18 November 1999 having satisfied the following criteria. The place is important in demonstrating the course,