Weddin Shire Council issued the Brief for the design of improvements to the stormwater drainage system of the O’Brien Tributary at the Oliver Court residential unit development (No. 26 – 28 Warraderry Street), located on the eastern side of that street about 100 m south of the intersection with Camp Street. The works which were the subject of the Brief comprised Measure 5 of the Emu Creek Floodplain Risk Management Study (FRMS) and involved the collection and piping of flows across the unit development, with provision for safely conveying residual flood flows which exceeded the capacity of the upgraded system as overland flow across the property.

The scheme was intended to solve local drainage problems in the development and initially terminate at Council’s drainage system at the front of the property in Warraderry Street. It comprised the first stage of the upgrade of the O’Brien Tributary drainage system. A future stage would extend northwards along Warraderry Street to the intersection with Camp Street. Ultimately, it was intended that the upgrade would extend downstream of Camp Street to the junction of O’Brien Tributary with Emu Creek.