Nowra Creek is a tributary of the Shoalhaven River that drains the area to the south-west of the central business district and major residential areas of Nowra. It is an ephemeral stream that flows in a northerly direction, joining the Shoalhaven River just upstream of the Princes Highway bridge crossing. Browns Creek joins Nowra Creek near the intersection of the Princes Highway and Hillcrest Avenue. It drains that section of the catchment that extends to the east of the Princes Highway. The catchment of Nowra and Browns Creeks has an area of about 20 square kilometres. The catchment includes the residential areas of western Nowra and the industrial precinct of South Nowra.
The aim of the Flood Study is to produce information on flood flows, velocities, levels and flood extents, for a range of flood events under existing floodplain and catchment conditions. A secondary aim is for the study to highlight those areas where the greatest flood damage is likely to occur.
The objective of this report is to characterise flood behaviour in the Nowra Creek catchment as it affects the urban and industrial areas of Nowra and South Nowra. It includes an analysis of the hydrologic characteristics of the catchments of both Nowra and Browns Creeks and a detailed analysis of the hydraulics of floodwater movement along the creeks and their floodplains.
