Sinclair Knight Merz was commissioned by Shoalhaven City Council to carry out an audit of Terara Levee. The study was required to cover the following areas:

• Survey of the top of the levee in order to identify any low areas and allow an assessment of the size of flood that the levee could withstand before overtopping
• Cross section survey of the levee
• Geotechnical investigation to identify soil types and their soil parameters
• assessment of the stability of the levee under all conditions
• Assessment of the causes of erosion of the river bank and the magnitude of the effects
• Identification of appropriate cost effective environmentally friendly protection measures and the cost of the works
• Costing of recommended works for bank protection and to bring the levee to a uniform height